United Fire (UFCS) 10-K 26 Feb 21 2020 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2020	Feb. 24, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-34257
Entity Registrant Name	UNITED FIRE GROUP, INC
Entity Incorporation, State or Country Code	IA
Entity Tax Identification Number	45-2302834
Entity Address, Address Line One	118 Second Avenue SE
Entity Address, City or Town	Cedar Rapids
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52401
City Area Code	319
Local Phone Number	399-5700
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	UFCS
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 0.7
Entity Common Stock, Shares Outstanding		25,087,310
Documents Incorporated by Reference	Part III of this Form 10-K incorporates by reference certain information from the registrant's definitive proxy statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A of the Securities Exchange Act of 1934, as amended, for its annual shareholder meeting to be held on May 19, 2021.
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Central Index Key	0000101199

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fixed maturities
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	$ 1,825,438	$ 1,719,607
Trading securities, at fair value (amortized cost $— in 2020 and $11,941 in 2019)	0	15,256
Equity securities, at fair value (cost $49,085 in 2020 and $67,529 in 2019)	206,685	299,203
Mortgage loans	47,690	42,520
Less: allowance for mortgage loan losses	76	72
Mortgage loans, net	47,614	42,448
Other long-term investments	69,305	78,410
Short-term investments	175	175
Total Investments	2,149,217	2,155,099
Cash and cash equivalents	87,948	120,722
Accrued investment income	14,615	15,182
Premiums receivable (net of allowance for doubtful accounts of $687 in 2020 and $1,239 in 2019)	317,292	357,632
Deferred policy acquisition costs	87,094	94,292
Property and equipment (primarily land and buildings, at cost, less accumulated depreciation of $55,141 in 2020 and $50,183 in 2019)	129,874	116,989
Reinsurance receivables and recoverables (net of allowance for credit losses of $190 in 2020 and $— in 2019)	160,540	72,369
Prepaid reinsurance premiums	12,965	9,550
Income taxes receivable	66,194	19,190
Goodwill and net intangible assets	6,743	22,542
Other assets	37,196	29,905
Total assets	3,069,678	3,013,472
Liabilities
Losses and loss settlement expenses	1,578,131	1,421,754
Unearned premiums	464,845	505,162
Accrued expenses and other liabilities	126,624	155,498
Deferred tax liability	24,929	20,586
Long term debt	50,000	0
Total liabilities	2,244,529	2,103,000
Stockholders' equity
Common stock, $0.001 par value; authorized 75,000,000 shares; 25,055,479 and 25,015,963 shares issued and outstanding in 2020 and 2019, respectively	25	25
Additional paid-in capital	202,359	200,179
Retained earnings	555,854	697,116
Accumulated other comprehensive income, net of tax	66,911	13,152
Total stockholders' equity	825,149	910,472
Total liabilities and stockholders' equity	$ 3,069,678	$ 3,013,472

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Cost or Amortized Cost	$ 1,720,291	$ 1,659,760
Available-for-sale securities, allowance for credit losses	5	0
Trading securities, amortized cost	0	11,941
Equity securities, cost	49,085	67,529
Allowance for doubtful accounts	687	1,239
Property and equipment, accumulated depreciation	55,141	50,183
Reinsurance receivables, allowance for credit losses	$ 190	$ 0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	25,055,479	25,015,963
Common stock, shares outstanding (in shares)	25,055,479	25,015,963

Consolidated Statements of Inco

Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Net premiums earned	$ 1,055,082	$ 1,086,972	$ 1,037,451
Investment income, net of investment expenses	39,670	60,414	52,894
Net realized investment gains (losses) (includes reclassifications for net unrealized gains on available-for-sale securities of $1,750 in 2020; $(1,521) in 2019; and $(784) in 2018 previously included in accumulated other comprehensive income)	(32,395)	53,779	(20,179)
Other income	6,270	0	0
Total revenues	1,068,627	1,201,165	1,070,166
Benefits, losses and expenses
Losses and loss settlement expenses	869,467	830,172	731,611
Amortization of deferred policy acquisition costs	210,252	216,699	206,232
Other underwriting expenses (includes reclassifications for employee benefit costs of $(4,289) in 2020; $(4,497) in 2019; and $(6,642) in 2018 previously included in accumulated other comprehensive income)	143,332	137,415	141,473
Goodwill impairment	15,091	0	0
Total benefits, losses and expenses	1,238,142	1,184,286	1,079,316
Income (loss) from continuing operations before income taxes	(169,515)	16,879	(9,150)
Federal income tax expense (benefit) (includes reclassifications of $534 in 2020; $1,263 in 2019; and $1,559 in 2018 previously included in accumulated other comprehensive income)	(56,809)	2,059	(11,405)
Net income (loss) from continuing operations	(112,706)	14,820	2,255
Income (loss) from discontinued operations, net of taxes	0	0	(1,912)
Gain on sale of discontinued operations, net of taxes	0	0	27,307
Net income (loss)	(112,706)	14,820	27,650
Other comprehensive income (loss)
Change in net unrealized appreciation on investments	47,054	70,127	(50,985)
Change in liability for underfunded employee benefit plans	18,456	(20,924)	25,513
Other comprehensive income (loss), before tax and reclassification adjustments	65,510	49,203	(25,472)
Income tax effect	(13,757)	(10,334)	5,349
Other comprehensive income (loss), after tax, before reclassification adjustments	51,753	38,869	(20,123)
Reclassification adjustment for net realized (gains) losses included in income	(1,750)	1,521	784
Reclassification adjustment for employee benefit costs included in expense	(4,289)	(4,497)	(6,642)
Total reclassification adjustments, before tax	2,539	6,018	7,426
Income tax effect	534	1,263	1,559
Total reclassification adjustments, after tax	2,005	4,755	5,867
Comprehensive income (loss)	$ (58,948)	$ 58,444	$ 13,394
Weighted average common shares outstanding (in shares)	25,027,358	25,138,039	25,006,211
Earnings (loss) per common share from continuing operations:
Basic (in dollars per share)	$ (4.50)	$ 0.59	$ 0.09
Diluted (in dollars per share)	(4.50)	0.58	0.09
Earnings (loss) per common share:
Basic (in dollars per share)	(4.50)	0.59	1.11
Diluted (in dollars per share)	$ (4.50)	$ 0.58	$ 1.08

Consolidated Statements of In_2

Consolidated Statements of Income and Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Reclassification adjustment for net realized (gains) losses included in income	$ 1,750	$ (1,521)	$ (784)
Reclassification adjustment for employee benefit costs included in expense	4,289	4,497	6,642
Reclassifications for federal income tax expense (benefit)	$ (534)	$ (1,263)	$ (1,559)

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands		Total		Cumulative effect of change in accounting principle	Common Stock	Additional paid-in capital	Retaining earnings	Retaining earningsCumulative effect of change in accounting principle	Accumulated other comprehensive income	Accumulated other comprehensive incomeCumulative effect of change in accounting principle
Balance, beginning of year (in shares) at Dec. 31, 2017					24,916,806
Balance, beginning of year at Dec. 31, 2017		$ 973,373		$ 0	$ 25	$ 196,334	$ 608,700	$ 191,244	$ 168,314	$ (191,244)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		27,650					27,650
Shares repurchased (in shares)					(120,372)
Shares repurchased		(5,404)				(5,404)
Stock based compensation (in shares)					300,974
Stock based compensation		7,171				7,171
Dividends on common stock		(105,408)					(105,408)
Change in net unrealized investment appreciation	[1]	(32,944)							(32,944)
Net unrealized investment depreciation of discontinued operations, sold		(6,714)					(6,714)
Change in liability for underfunded employee benefit plans	[2]	25,402							25,402
Compensation expense and related tax benefit for stock-based award grants		5,249				5,249
Balance, ending of year (in shares) at Dec. 31, 2018					25,097,408
Balance, end of year at Dec. 31, 2018		888,375		(514)	$ 25	203,350	715,472	(514)	(30,472)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		14,820					14,820
Shares repurchased (in shares)					(258,756)
Shares repurchased		(11,700)				(11,700)
Stock based compensation (in shares)					177,311
Stock based compensation		2,377				2,377
Dividends on common stock		(32,662)					(32,662)
Change in net unrealized investment appreciation	[1]	56,602							56,602
Change in liability for underfunded employee benefit plans	[2]	(12,978)							(12,978)
Compensation expense and related tax benefit for stock-based award grants		$ 6,152				6,152
Balance, ending of year (in shares) at Dec. 31, 2019		25,015,963			25,015,963
Balance, end of year at Dec. 31, 2019		$ 910,472		$ (30)	$ 25	200,179	697,116	$ (30)	13,152
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		(112,706)					(112,706)
Shares repurchased (in shares)					(70,467)
Shares repurchased		(2,741)				(2,741)
Stock based compensation (in shares)					109,983
Stock based compensation		(71)				(71)
Dividends on common stock		(28,526)					(28,526)
Change in net unrealized investment appreciation		35,791	[1]						35,791
Change in liability for underfunded employee benefit plans		17,968	[2]						17,968
Compensation expense and related tax benefit for stock-based award grants		$ 4,992				4,992
Balance, ending of year (in shares) at Dec. 31, 2020		25,055,479			25,055,479
Balance, end of year at Dec. 31, 2020		$ 825,149			$ 25	$ 202,359	$ 555,854		$ 66,911
[1]	The change in net unrealized appreciation is net of reclassification adjustments and income taxes.
[2]	The change in liability for underfunded employee benefit plans is net of income taxes.

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends on common stock (in dollars per share)	$ 1.14	$ 1.30	$ 4.21

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash Flows From Operating Activities
Net income (loss)	$ (112,706)	$ 14,820	$ 27,650
Less net income (loss) from discontinued operations, net of taxes	0	0	(1,912)
Adjustments to reconcile net income to net cash provided by operating activities
Net accretion of bond premium	10,444	9,372	8,788
Depreciation and amortization	6,656	11,191	5,174
Goodwill impairment	15,091	0	0
Stock-based compensation expense	4,992	6,152	5,249
Net realized investment (gains) losses	32,395	(53,779)	20,179
Net cash flows from trading investments	72,753	1,415	22,514
Deferred income tax benefit	(17,468)	10,148	(16,220)
Changes in:
Accrued investment income	567	592	(1,933)
Premiums receivable	40,340	(10,807)	(18,312)
Deferred policy acquisition costs	7,198	(1,496)	(4,694)
Reinsurance receivables	(88,171)	(11,032)	1,857
Prepaid reinsurance premiums	(3,415)	(2,487)	(3,314)
Income taxes receivable	(47,004)	(4,155)	(9,004)
Other assets	(7,291)	(11,972)	(1,524)
Losses, claims and loss settlement expenses	156,377	109,271	88,300
Unearned premiums	(40,317)	12,244	27,527
Accrued expenses and other liabilities	(6,129)	15,659	(12,319)
Deferred income taxes	7,521	(110)	(10,746)
Other, net	9,602	(1,274)	9,847
Cash from operating activities - continuing operations	154,141	78,932	111,369
Cash from operating activities - discontinued operations	0	0	4,024
Cash from operating activities - gain on sale of discontinued operations	0	0	(34,851)
Total adjustments	154,141	78,932	80,542
Net cash provided by operating activities	41,435	93,752	110,104
Cash Flows From Investing Activities
Proceeds from sale of available-for-sale investments	50,744	41,760	132,250
Proceeds from call and maturity of available-for-sale investments	318,981	265,515	122,250
Proceeds from short-term and other investments	6,494	4,397	9,303
Proceeds from sale of discontinued operations	0	0	276,055
Purchase of available-for-sale investments	(438,035)	(213,437)	(507,380)
Purchase of mortgage loans	(5,564)	(16,933)	(25,853)
Purchase of short-term and other investments	(6,629)	(44,375)	(7,119)
Net purchases and sales of property and equipment	(18,862)	(32,426)	(33,053)
Cash from investing activities - continuing operations	(92,871)	4,501	(33,547)
Cash from investing activities - discontinued operations	0	0	14,343
Net cash provided by (used in) investing activities	(92,871)	4,501	(19,204)
Cash Flows From Financing Activities
Borrowings of long-term debt	50,000	0	0
Payment of cash dividends	(28,526)	(32,662)	(105,408)
Repurchase of common stock	(2,741)	(11,700)	(5,404)
Issuance of common stock	(71)	2,377	7,171
Cash from financing activities - continued operations	18,662	(41,985)	(103,641)
Cash from financing activities - discontinued operations	0	0	(11,547)
Net cash provided by (used in) financing activities	18,662	(41,985)	(115,188)
Net Change in Cash and Cash Equivalents	(32,774)	56,268	(24,288)
Less: decrease in cash and cash equivalents - discontinued operations	0	0	(6,820)
Net increase (decrease) in cash and cash equivalents - continuing operations	(32,774)	56,268	(31,108)
Cash and Cash Equivalents at Beginning of Year - Continuing Operations	120,722	64,454	95,562
Cash and Cash Equivalents at End of Year - Continuing Operations	$ 87,948	$ 120,722	$ 64,454

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Business United Fire Group, Inc. ("UFG", "United Fire", the "Registrant", the "Company", "we", "us", or "our") and its consolidated subsidiaries and affiliates are engaged in the business of writing property and casualty insurance through a network of independent agencies. Our insurance company subsidiaries are licensed as a property and casualty insurer in 49 states, plus the District of Columbia. Discontinued Operations On September 18, 2017, the Company signed a definitive agreement to sell its subsidiary, United Life Insurance Company ("United Life"), to Kuvare US Holdings, Inc. ("Kuvare") and on March 30, 2018, the sale closed. As a result, our life insurance business, previously a separate segment, has been reported as discontinued operations in the Consolidated Statements of Income and Comprehensive Income and Consolidated Statements of Cash Flows for the twelve month period ended December 31, 2018 in this Form 10-K. Subsequent to the announcement of this sale, our continuing operations were reported as one business segment. All current and prior periods reflected in this Form 10-K have been presented as continuing and discontinued operations, unless otherwise noted. For more information, refer to Note 17 "Discontinued Operations." Principles of Consolidation The accompanying Consolidated Financial Statements include United Fire and its wholly owned subsidiaries: United Fire & Casualty Company, United Real Estate Holdings, LLC, Addison Insurance Company, Lafayette Insurance Company, United Fire & Indemnity Company, United Fire Lloyds, UFG Specialty Insurance Company, Financial Pacific Insurance Company, Franklin Insurance Company, Mercer Insurance Company, Mercer Insurance Company of New Jersey, Inc, McIntyre Cedar UK Limited. Mercer Insurance Company and McIntyre Cedar Corporate Member LLP. United Fire Lloyds, an affiliate of United Fire & Indemnity Company, is organized as a Texas Lloyds plan, which is an aggregation of underwriters who, under a common name, engage in the business of insurance through a corporate attorney-in-fact. United Fire Lloyds is financially and operationally controlled by United Fire & Indemnity Company, its corporate attorney-in-fact, pursuant to three types of agreements: trust agreements between United Fire & Indemnity Company and certain individuals who agree to serve as trustees; articles of agreement among the trustees who agree to act as underwriters to establish how the Lloyds plan will be operated; and powers of attorney from each of the underwriters appointing a corporate attorney-in-fact, who is authorized to operate the Lloyds plan. Because United Fire & Indemnity Company can name the trustees, the Lloyds plan is perpetual, subject only to United Fire & Indemnity Company's desire to terminate it. United Fire & Indemnity Company provides all of the statutory capital necessary for the formation of the Lloyds plan by contributing capital to each of the trustees. The trust agreements require the trustees to become underwriters of the Lloyds plan, to contribute the capital to the Lloyds plan, to sign the articles of agreement and to appoint the attorney-in-fact. The trust agreements also require the trustees to pay to United Fire & Indemnity Company all of the profits and benefits received by the trustees as underwriters of the Lloyds plan, which means that United Fire & Indemnity Company has the right to receive 100 percent of the gains and profits from the Lloyds plan. The trustees serve at the pleasure of United Fire & Indemnity Company, which may remove a trustee and replace that trustee at any time. Termination of a trustee must be accompanied by the resignation of the trustee as an underwriter, so that the trustee can obtain the capital contribution from the Lloyds plan to reimburse United Fire & Indemnity Company. By retaining the ability to terminate trustees, United Fire & Indemnity Company possesses the ability to name and remove the underwriters. United Real Estate Holdings, LLC, formed in 2013, is a wholly owned subsidiary of United Fire & Casualty Company and is organized as an Iowa limited liability corporation, an unincorporated association formed for the purpose of holding United Fire & Casualty Company's ownership in commercial real estate. Basis of Presentation The accompanying Consolidated Financial Statements have been prepared on the basis of U.S. generally accepted accounting principles ("GAAP"), which differ in some respects from those followed in preparing our statutory reports to insurance regulatory authorities. Our stand-alone subsidiary financial statements submitted to insurance regulatory authorities are presented on the basis of accounting practices prescribed or permitted by the insurance departments of the states in which we are domiciled ("statutory accounting principles"). Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The financial statement categories that are most dependent on management estimates and assumptions include: investments; deferred policy acquisition costs; reinsurance receivables and recoverables; goodwill impairment; losses and loss settlement expenses; and pension and post-retirement benefit obligations. Continuing Operations - Property and Casualty Insurance Business Premiums written are deferred and recorded as earned premium on a daily pro rata basis over the terms of the respective policies. Unearned premium reserves are established for the portion of premiums written applicable to the unexpired term of insurance policies in force. Premiums receivable are presented net of an estimated allowance for doubtful accounts, which is based on a periodic evaluation of the aging and collectability of amounts due from agents and policyholders. To establish loss and loss settlement expense reserves, we make estimates and assumptions about the future development of claims. Actual results could differ materially from those estimates, which are subjective, complex and inherently uncertain. When we establish and adjust reserves, we do so given our knowledge at the time of the circumstances and facts of known claims. To the extent that we have overestimated or underestimated our loss and loss settlement expense reserves, we adjust the reserves in the period in which such adjustment is determined. We record our best estimate of reserves for claim litigation that arises in the ordinary course of business. We consider all of our pending litigation as of December 31, 2020 to be ordinary, routine and incidental to our business. Discontinued Operations - Life Insurance Business Our whole life and term insurance (i.e., traditional business) premiums are reported as earned when due and benefits and expenses are associated with premium income in order to result in the recognition of profits over the lives of the related contracts. Income annuities with life contingencies (single premium immediate annuities and supplementary contracts) have premium recorded and any related expense charge fees recorded as income and expense when the contract is issued. On universal life and deferred annuity policies (i.e., non-traditional business), income and expenses are reported when charged and credited to policyholder account balances in order to result in recognition of profits over the lives of the related contracts. We accomplish this by means of a provision for future policy benefits and the deferral and subsequent amortization of policy acquisition costs. Reinsurance Premiums earned and losses and loss settlement expenses incurred are reported net of reinsurance ceded. Ceded insurance business is accounted for on a basis consistent with the original policies issued and the terms of the reinsurance contracts. Refer to Note 4 "Reinsurance" for a discussion of our reinsurance activities. Investments Investments in fixed maturities include bonds and redeemable preferred stocks. Our investments in available-for-sale fixed maturities and trading securities are recorded at fair value. Investments in equity securities, which include common and non-redeemable preferred stocks are recorded at fair value with changes in value recorded as a component of income. Changes in unrealized appreciation and depreciation, with respect to available-for-sale fixed maturities are reported as a component of accumulated other comprehensive income, net of applicable deferred income taxes, in stockholders' equity. Changes in unrealized appreciation and depreciation, with respect to trading securities, are reported as a component of income. Other long-term investments consist primarily of our interests in limited liability partnerships that are recorded on the equity method of accounting. Included in investments at December 31, 2020 and 2019, are securities on deposit with, or available to, various regulatory authorities as required by law, with fair values of $21,628 and $20,816 respectively. We review all of our investment holdings for appropriate valuation on an ongoing basis. Refer to Note 2 "Summary of Investments" for a discussion of our accounting policy for impairment recognition. Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents include cash, money market accounts, and non-negotiable certificates of deposit with original maturities of three months or less. In 2020, 2019, and 2018, we made cash payments for income taxes of $138, $1,575 and $29,071, respectively. In 2020, we did not receive a federal tax refund. We received federal tax refunds of $5,401 and $1,503 in 2019 and 2018, respectively, which resulted from the utilization of our net operating losses and net capital loss carryforwards and carrybacks. We made no interest payments in 2020, 2019 and 2018 . These payments exclude interest credited to policyholders' accounts. Deferred Policy Acquisition Costs ("DAC") Certain costs associated with underwriting new business (primarily commissions, premium taxes and variable underwriting and policy issue expenses associated with successful acquisition efforts) are deferred. The following table is a summary of the components of DAC that are reported in the accompanying Consolidated Financial Statements. Continuing Operations - Property and Casualty Insurance 2020 2019 2018 Recorded asset at beginning of year $ 94,292 $ 92,796 $ 88,102 Underwriting costs deferred 203,054 218,195 210,926 Amortization of deferred policy acquisition costs (210,252) (216,699) (206,232) Recorded asset at end of year $ 87,094 $ 94,292 $ 92,796 Discontinued Operations - Life Insurance Recorded asset at beginning of year $ — $ — $ 71,151 Underwriting costs deferred — — 1,376 Amortization of deferred policy acquisition costs — — (1,895) $ — $ — $ 70,632 Change in "shadow" deferred policy acquisition costs — — 7,274 Sale of discontinued operations — — (77,906) Recorded asset at end of year $ — $ — $ — Total Recorded asset at beginning of year $ 94,292 $ 92,796 $ 159,253 Underwriting costs deferred 203,054 218,195 212,302 Amortization of deferred policy acquisition costs (210,252) (216,699) (208,127) $ 87,094 $ 94,292 $ 163,428 Change in "shadow" deferred policy acquisition costs — — 7,274 Sale of discontinued operations — — (77,906) Recorded asset at end of year $ 87,094 $ 94,292 $ 92,796 Our continuing operations property and casualty insurance DAC is amortized as premium revenue is recognized. The method followed in computing DAC limits the amount of such deferred costs to their estimated realizable value. This takes into account the premium to be earned, losses and loss settlement expenses expected to be incurred and certain other costs expected to be incurred as the premium is earned. This calculation is performed by line of business in a manner consistent with how the policies are currently being marketed and managed. For the discontinued operations traditional life insurance policies, DAC was amortized to income over the premium-paying period in proportion to the ratio of the expected annual premium revenue to the expected total premium revenue. Expected premium revenue and gross profits are based on the same mortality and withdrawal assumptions used in determining future policy benefits. These assumptions are not revised after policy issuance unless the recorded DAC asset is deemed to be unrecoverable from future expected profits. For the discontinued operations non-traditional life insurance policies, DAC is amortized over the anticipated terms in proportion to the ratio of the expected annual gross profits to the total expected gross profits. Changes in the amount or timing of expected gross profits result in adjustments to the cumulative amortization of these costs. The effect on amortization of DAC for revisions to estimated gross profits is reported in earnings in the period the estimated gross profits are revised. Property, Equipment and Depreciation Property and equipment is presented at cost less accumulated depreciation. The following table is a summary of the components of the property and equipment that are reported in the accompanying Consolidated Financial Statements. 2020 2019 Real estate: Land $ 2,974 $ 2,982 Buildings 85,776 83,360 Furniture and fixtures 6,058 7,253 Computer equipment and software 35,066 23,394 Airplane — — Total property and equipment $ 129,874 $ 116,989 Expenditures for maintenance and repairs on property and equipment are generally expensed as incurred. We periodically review these assets for impairment whenever events or changes in business circumstances indicate that the carrying value of the underlying asset may not be recoverable. A loss would be recognized if the estimated fair value of the asset were less than its carrying value. Depreciation is computed primarily by the straight-line method over the following estimated useful lives: Useful Life Computer equipment and software Three years Furniture and fixtures Seven years Leasehold improvements Shorter of the lease term or useful life of the asset Real estate Seven years to thirty-nine years Airplane Five years Depreciation expense totaled $5,947, $10,482 and $4,455 for 2020, 2019 and 2018, respectively. Goodwill and Other Intangible Assets Goodwill assets arise as a result of business combinations and consist of the excess of the fair value of consideration paid over the tangible and intangible assets acquired and liabilities assumed. All of our goodwill assets relate to the acquisition of Mercer Insurance Group, Inc. on March 28, 2011. We evaluate goodwill assets for impairment at least on an annual basis or whenever events or changes in circumstances indicate that it is more likely than not that the carrying amount of goodwill assets may exceed their implied fair value. Any impairment is recognized in the period that the impairment is identified. During the third quarter of 2020, we completed our annual quantitative analysis of goodwill. As a result of the quantitative analysis, we impaired the remaining balance of our goodwill of $15,091 as of September 30, 2020, based on the following factors: (i) disruptions in the equity markets, specifically for property and casualty insurance companies, as a result of the COVID-19 pandemic and due to recent weather related catastrophes; (ii) recent elevated commercial auto loss ratios and (iii) the fair value of our stock trading significantly below book value. The Company used a weighting of the income and market approaches to determine the fair value of the reporting unit. Our other intangible assets, which consist primarily of agency relationships, trade names, state insurance licenses, and software, are being amortized by the straight-line method over periods ranging from 2 years to 15 years, with the exception of state insurance licenses, which are indefinite-lived and not amortized. In 2020, 2019 and 2018 we performed a qualitative impairment assessment of our indefinite lived intangible assets. As a result of these assessments, we did not recognize an impairment charge on our intangible assets in 2020, 2019 and 2018. Amortization expense totaled $709 , $709 and $719 in 2020, 2019 and 2018, respectively. Long term debt The Company executed a private placement debt transaction on December 15, 2020 between United Fire & Casualty Company ("UF&C"), and Federated Mutual Insurance Company, a mutual insurance company domiciled in Minnesota ("Federated Mutual"), and Federated Life Insurance Company, an insurance company domiciled in Minnesota ("Federated Life” and, together with Federated Mutual, the "Note Purchasers"). UFG sold an aggregate $50,000 of notes due 2040 to the Note Purchasers. One note with a principal amount of $35,000 was issued to Federated Mutual and one note with a principal amount of $15,000 was issued to Federated Life subject to the terms of their respective notes. The notes are presented as a Long term debt liability in the Consolidated Balance Sheets and as a financing activity in the Consolidated Statement of Cash Flows. The Company incurred $24 in debt issuance costs associated with this debt transaction in 2020 which are included in other underwriting expenses in the Consolidated Statements of Income and Comprehensive Income. Interest payments under the surplus notes will be paid quarterly on March 15, June 15, September 15 and December 15 of each year (each such date, an "Interest Payment Date"). The interest rate will equal the rate that corresponds to the A.M. Best Co. (or its successor’s) financial strength rating for members of the United Fire & Casualty Pooled Group as of the applicable Interest Payment Date. As of December 31, 2020, interest totaled $133 and is included in accrued expenses and other liabilities in the Consolidated Balance Sheets and as an expense in other underwriting expenses in the Consolidated Statements of Income and Comprehensive Income. Payment of interest is subject to approval by the Iowa Insurance Division. Income Taxes The Tax Cuts and Jobs Act of 2017 (the "Tax Act") was enacted on December 22, 2017. The Tax Act significantly revised the U.S. corporate income tax laws including lowering the U.S. federal corporate tax rate from 35 percent to 21 percent, effective January 1, 2018. In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, which addresses how a company recognizes provisional amounts when a company does not have the necessary information available, prepared or analyzed in reasonable detail to complete its accounting for the effect of the changes in the Tax Act. The measurement period ends when a company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. As of December 31, 2018 we had completed accounting for the tax effects of enactment of the Tax Act and no adjustments were made during the measurement period. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") was enacted in response to the COVID-19 pandemic. The CARES Act, among other things, permits net operating loss ("NOL") carryovers and carrybacks to offset 100 percent of taxable income for taxable years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2020, 2019 and 2018 to be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes. The Company has considered the implications of the CARES Act on its tax provision and has included an income tax benefit of $18.6 million as the result of this Act. Deferred tax assets and liabilities are established based on differences between the financial statement bases of assets and liabilities and the tax bases of those same assets and liabilities, using the currently enacted statutory tax rates. Deferred income tax expense is measured by the year-to-year change in the net deferred tax asset or liability, except for certain changes in deferred tax amounts that affect stockholders' equity and do not impact federal income tax expense. The Company performs a quarterly review of its tax positions and makes a determination whether it is more likely than not that the tax position will be sustained upon examination. If, based on this review, it appears not more likely than not that the position will be sustained, the Company will calculate any unrecognized tax benefits and calculate any interest and penalties. At December 31, 2020, 2019, and 2018 the Company did not recognize any liability for unrecognized tax benefits. In addition, we have not accrued for interest and penalties related to unrecognized tax benefits. However, if interest and penalties would need to be accrued related to unrecognized tax benefits, such amounts would be recognized as a component of federal income tax expense. We file a consolidated federal income tax return. We also file income tax returns in various state jurisdictions. We are no longer subject to federal or state income tax examination for years before 2017. Leases The Company determines if a contract contains a lease at inception of the contract. The Company's inventory of leases consists of operating leases which are recorded as a lease obligation liability disclosed in the "Accrued expenses and other liabilities" line on the Consolidated Balance Sheets and as a lease right-of-use asset disclosed in the "Other assets" line on the Consolidated Balance Sheets. The Company's operating leases consist of office space, vehicles, computer equipment and office equipment. The lease right-of-use asset represents the Company's right to use each underlying asset for the lease term and the lease obligation liability represents the Company's obligation over the lease term. The Company's lease obligation is recorded at the present value of the lease payments based on the term of the applied lease. Short-term leases of 12 months or less are recorded on the Consolidated Balance Sheets and lease payments are recognized on the Consolidated Statements of Income and Comprehensive Income. For more information on leases refer to Note 13 "Lease Commitments." Variable Interest Entities The Company and certain related parties are equity investors in one investment in which the Company determined is a variable interest entity ("VIE") as a result of participation in the risks and rewards of the VIE based on the objectives and strategies of the VIE. The VIE is a limited liability company that primarily invests in commercial real estate. The Company and certain related parties are not the primary beneficiary largely due to their inability to influence management or direct the activities that most significantly impact the VIE's economic performance. Based on these facts and circumstances, the Company has a variable interest in the VIE, but has not consolidated the VIE's financial results as it is not the primary beneficiary. The Company's investment is reported in other long-term investments in the Consolidated Balance Sheets and accounted for under the equity method of accounting. The fair value of the VIE at December 31, 2020 wa s $3.3 million a nd there are no future funding commitments. Stock-Based Compensation We currently have two equity compensation plans. One plan allows us to grant restricted and unrestricted stock, stock appreciation rights, incentive stock options, and non-qualified stock options to employees. The other plan allows us to grant restricted and non-qualified stock options to non-employee directors. We utilize the Black-Scholes option pricing method to establish the fair value of non-qualified stock options granted under our equity compensation plans. Our determination of the fair value of stock options on the date of grant using this option-pricing model is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables, which include the expected volatility in our stock price, the expected term of the award, the expected dividends to be paid over the term of the award and the expected risk-free interest rate. Any changes in these assumptions may materially affect the estimated fair value of the award. For our restricted and unrestricted stock awards, we utilize the fair value of our common stock on the date of grant to establish the fair value of the award. Refer to Note 9 "Stock-Based Compensation" for further discussion. Credit Losses The Company recognizes credit losses for its available-for-sale fixed-maturity portfolio, reinsurance receivables, mortgage loans and premium receivables by setting up allowances which are remeasured each reporting period and recorded in the Consolidated Statements of Income and Comprehensive Income. For our available-for-sale fixed-maturity portfolio an allowance for credit losses is recorded net of available-for-sale fixed maturities in the Consolidated Balance Sheets and a corresponding credit loss recognized as a realized loss or gain in the Consolidated Statements of Income and Comprehensive Income. The Company determines if an allowance for credit losses is recorded based on a number of factors including the current economic conditions, management's expectations of future economic conditions and performance indicators, such as market value vs. amortized cost, investment spreads widening or contracting, rating actions, payment and default history. The Company does not recognize an allowance for credit losses for accrued interest receivable for available-for-sale fixed-maturity securities, which is recorded in "Accrued investment income" in the Consolidated Balance Sheets and "Investment income, net of investment expenses" in the Consolidated Statements of Income and Comprehensive Income. The Company considers collections of accrued investment income within six months to be timely and therefore not requiring a write- off. If a write-off is required for accrued investment income outstanding greater than six months, the Company writes off accrued interest by reversing net investment income. For more information on credit losses and the allowance for credit losses for available-for-sale fixed-maturity portfolio, see Note 2 "Summary of Investments." An allowance for mortgage loan losses is established based on historical loss information of the collective pool of the Company's commercial mortgage loan investments which have similar risk characteristics. To calculate the allowance for mortgage loan losses, the Company starts with historical loan experience to predict the future expected losses and then layers on a market-linked adjustment. On a quarterly basis, quantitative credit risk metrics, including for example, cash- flows, rent rolls and financial statements are reviewed for each loan to determine if it is performing in line with its expectations. This allowance is presented as a separate line in the Consolidated Balance Sheets beneath the asset value as well as presented net and recorded through "Net realized investment gains (losses)" in the Consolidated Statements of Income and Comprehensive Income. For more information on credit losses and the allowance for credit losses for our investment in mortgage loans see Note 3 "Fair Value of Financial Instruments." For reinsurance receivables, the Company's model estimates expected credit loss by multiplying the exposure at default by both the probability of default and loss given default ("LGD"). The LGD is estimated by the rating of the Company, historical relationship with UFG, existence of letters of credit and known regulation the Company may be held accountable for. The ultimate LGD percentage is estimated after considering Moody’s experience with unsecured year 1 bond recovery rates from 1983-2017. The allowance calculated as of December 31, 2020 is recorded through the line "Reinsurance receivables and recoverables" in the Consolidated Balance Sheets and through the line "Other underwriting expenses" in the Consolidated Statements of Income and Other Comprehensive Income. As of December 31, 2020, the Company had a credit loss allowance for reinsurance receivables of $190. Rollforward of Credit Loss Allowance for Reinsurance Receivable As of December 31, 2020 Beginning balance, January 1, 2020 $ 38 Current-period provision for expected credit losses 152 Write-off charged against the allowance, if any — Recoveries of amounts previously written off, if any — Ending balance of the allowance for reinsurance receivable, December 31, 2020 $ 190 With respect to premiums receivable, the Company utilizes an aging method to estimate credit losses. An allowance for doubtful accounts is based on a periodic evaluation of the aging and collectability of amounts due from agents and policyholders. "Premiums receivable" are presented in the Consolidated Balance Sheets net of an estimated allowance for doubtful accounts and recorded through "Other underwriting expenses" in the Consolidated Statements of Income and Comprehensive Income. Comprehensive Income Comprehensive income includes all changes in stockholders' equity during a period except those resulting from investments by and dividends to stockholders. Subsequent Events In the preparation of the accompanying financial statements, the Company has evaluated all material subsequent events or transactions that occurred after the balance sheet date through the date on which the financial statements were issued for potential recognition or disclosure in the Company's financial statements. Subsequent to the completion of the financial statements as of December 31, 2020, the Company made the decision to change the post-retirement benefit plan to a voluntary plan funded exclusively by participants, commencing at the start of 2023. The impact of this decision will be reflected in the financial statements subsequent to December 31, 2020. As of December 31, 2020, the post-retirement benefit obligation was $31,666. This benefit obligation, along with the unrecognized prior service costs, will be released into the Consolidated Statement of Income and Other Comprehensive Income over the next two years. See Note 8 "Employee Benefits" for more information. COVID-19 Pandemic The COVID-19 pandemic caused significant financial market volatility, economic uncertainty and interruptions to normal business activities in 2020. As of the date of this report, we expect the effect of COVID-19 on claims currently under our coverages to be manageable, based on the information presently available. However, the effects of the COVID-19 pandemic continue to evolve and we cannot predict the extent to which our business, results of operations, financial condition, liquidity, capital position, the value of investments we hold in our investment portfolio, premiums and the demand for our products and our ability to collect premiums or requirement to return premiums to our policyholders, will ultimately be impacted. Additionally, if established written contract policy exclusions of business interruption coverage for losses attributable to the COVID-19 pandemic are voided or changed through legislation, regulations or interpretations by the courts, such changes have the potential to materially increase claims, losses and legal expenses which may impact our business, financial condition, results of operations or liquidity. Recently Issued Accounting Standards Accounting Standards Adopted in 2020 Intangibles - Other Internal Use Software In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a cloud computing hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The guidance requires the Company to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The new guidance was effective for annual and interim periods beginning after December 15, 2019. The Company adopted the new guidance as of January 1, 2020. The adoption did not have a significant impact on the Company's financial position or results of operations. Financial Instruments - Credit Losses In June 2016, the FASB issued new guidance on the measurement of credit losses for most financial instruments. The new guidance replaces the incurred loss model for recognizing credit losses with an expected loss model for instrume

SUMMARY OF INVESTMENTS

SUMMARY OF INVESTMENTS	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
SUMMARY OF INVESTMENTS	SUMMARY OF INVESTMENTS Fair Value of Investments The table that follows is a reconciliation of the amortized cost (cost for equity securities) to fair value of investments in available-for-sale fixed maturity securities, presented on a consolidated basis as of December 31, 2020 and 2019. December 31, 2020 Type of Investment Cost or Amortized Cost Gross Unrealized Appreciation Gross Unrealized Depreciation Fair Value Allowance for Credit Losses Carrying Value AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 149,481 $ 482 $ 25 $ 149,938 $ — $ 149,938 U.S. government agency 60,502 4,016 — 64,518 — 64,518 States, municipalities and political subdivisions General obligations: Midwest 77,933 4,047 — 81,980 — 81,980 Northeast 29,071 1,379 — 30,450 — 30,450 South 104,522 5,448 — 109,970 — 109,970 West 102,590 7,431 — 110,021 — 110,021 Special revenue: Midwest 115,956 9,142 — 125,098 — 125,098 Northeast 56,317 4,759 — 61,076 — 61,076 South 208,739 17,967 — 226,706 — 226,706 West 129,417 9,982 — 139,399 — 139,399 Foreign bonds 27,799 1,805 2 29,602 — 29,602 Public utilities 76,114 7,388 — 83,502 — 83,502 Corporate bonds Energy 22,441 2,895 — 25,336 — 25,336 Industrials 39,513 3,744 — 43,257 — 43,257 Consumer goods and services 46,521 4,046 — 50,567 — 50,567 Health care 6,678 898 — 7,576 — 7,576 Technology, media and telecommunications 37,270 4,381 15 41,636 — 41,636 Financial services 93,736 7,564 269 101,031 5 101,026 Mortgage-backed securities 20,305 326 54 20,577 — 20,577 Collateralized mortgage obligations Government national mortgage association 81,758 4,439 45 86,152 — 86,152 Federal home loan mortgage corporation 151,362 2,239 758 152,843 — 152,843 Federal national mortgage association 81,952 2,013 683 83,282 — 83,282 Asset-backed securities 314 612 — 926 — 926 Total Available-For-Sale Fixed Maturities $ 1,720,291 $ 107,003 $ 1,851 $ 1,825,443 $ 5 $ 1,825,438 December 31, 2019 Type of Investment Cost or Amortized Cost Gross Unrealized Appreciation Gross Unrealized Depreciation Fair Value AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 69,300 $ 203 $ 12 $ 69,491 U.S. government agency 97,962 2,344 104 100,202 States, municipalities and political subdivisions General obligations: Midwest 85,607 2,987 — 88,594 Northeast 30,120 1,150 — 31,270 South 111,688 3,515 — 115,203 West 105,569 4,748 — 110,317 Special revenue: Midwest 133,717 6,175 — 139,892 Northeast 58,665 2,878 — 61,543 South 224,214 10,452 — 234,666 West 138,557 6,287 — 144,844 Foreign bonds 4,936 181 — 5,117 Public utilities 60,950 2,701 — 63,651 Corporate bonds Energy 28,695 1,429 — 30,124 Industrials 52,249 1,766 — 54,015 Consumer goods and services 47,131 2,335 — 49,466 Health care 8,998 482 — 9,480 Technology, media and telecommunications 25,931 1,739 — 27,670 Financial services 96,613 3,870 230 100,253 Mortgage-backed securities 6,250 127 21 6,356 Collateralized mortgage obligations Government national mortgage association 78,400 2,053 97 80,356 Federal home loan mortgage corporation 123,572 1,150 220 124,502 Federal national mortgage association 70,322 1,631 108 71,845 Asset-backed securities 314 436 — 750 Total Available-For-Sale Fixed Maturities $ 1,659,760 $ 60,639 $ 792 $ 1,719,607 Maturities The amortized cost and fair value of available-for-sale fixed maturity securities at December 31, 2020, by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Asset-backed securities, mortgage-backed securities and collateralized mortgage obligations may be subject to prepayment risk and are therefore not categorized by contractual maturity. Maturities Available-For-Sale December 31, 2020 Amortized Cost Fair Value Due in one year or less $ 32,214 $ 32,467 Due after one year through five years 476,667 502,699 Due after five years through 10 years 400,277 431,271 Due after 10 years 475,442 515,226 Asset-backed securities 314 926 Mortgage-backed securities 20,305 20,577 Collateralized mortgage obligations 315,072 322,277 $ 1,720,291 $ 1,825,443 Net Realized Investment Gains and Losses Net realized gains (losses) on disposition of investments are computed using the specific identification method and are included in the computation of net income. A summary of net realized investment gains (losses) for 2020, 2019 and 2018, is as follows: 2020 2019 2018 Net realized investment gains (losses) from continuing operations Fixed maturities: Available-for-sale $ 1,787 $ 655 $ (254) Allowance for credit losses (5) — — Trading securities Change in fair value (3,314) 1,351 (296) Sales 2,950 1,993 1,226 Equity securities Change in fair value (6,875) 51,231 (21,994) Sales (26,906) 725 1,702 Mortgage loans (4) (26) (46) Real estate (28) (2,150) (517) Total net realized investment gains (losses) from continuing operations $ (32,395) $ 53,779 $ (20,179) Total net realized investment gains (losses) from discontinued operations — — (1,057) Total net realized investment gains (losses) $ (32,395) $ 53,779 $ (21,236) The proceeds and gross realized gains (losses) on the sale of available-for-sale fixed maturity securities from continuing operations for 2020, 2019 and 2018, are as follows: 2020 2019 2018 Proceeds from sales $ 50,744 $ 41,760 $ 132,250 Gross realized gains 1,400 302 140 Gross realized losses (495) (13) (517) There were no proceeds and gross realized gains (losses) on the sale of available-for-sale fixed maturity securities from discontinued operations for 2020, 2019 and 2018. Our investment portfolio includes trading securities with embedded derivatives. These securities are primarily convertible securities which are recorded at fair value. Income or loss, including the change in the fair value of these trading securities, is recognized currently in earnings as a component of net realized investment gains and losses. Our portfolio of trading securities had a fair value of $0 and $15,256 at December 31, 2020 and 2019, respectively. Net investment income for the years ended December 31, 2020, 2019 and 2018, is comprised of the following: Years Ended December 31, 2020 2019 2018 Investment income from continuing operations: Interest on fixed maturities $ 46,478 $ 50,274 $ 51,356 Dividends on equity securities 6,368 7,842 7,731 Income on other long-term investments Investment income 1,890 3,115 8,383 Change in value (1) (9,633) 1,114 (10,116) Interest on mortgage loans 1,949 1,595 412 Interest on short-term investments 107 522 606 Interest on cash and cash equivalents 763 2,681 1,875 Other 205 252 307 Total investment income from continuing operations $ 48,127 $ 67,395 $ 60,554 Less investment expenses 8,457 6,981 7,660 Net investment income from continuing operations $ 39,670 $ 60,414 $ 52,894 Net investment income from discontinued operations $ — $ — $ 12,663 Net investment income $ 39,670 $ 60,414 $ 65,557 (1) Represents the change in value of our interests in limited liability partnerships that are recorded on the equity method of accounting. Funding Commitment Pursuant to agreements with our limited liability partnership investments, we are contractually committed through July 10, 2030 to make capital contributions upon request of the partnerships. Our remaining potential contractual obligation was $8,484 at December 31, 2020. In addition, the Company invested $25,000 in December 2019 in a limited liability partnership investment fund which is subject to a 3-year lockup with a 60 day minimum notice, with 4 possible repurchase dates per year, after the 3-year lockup period is met. The fair value of the investment at December 31, 2020 was $24,867 and there are no remaining capital contributions with this investment. Credit Risk An allowance for credit losses is recorded based on a number of factors including the current economic conditions, management's expectations of future economic conditions and performance indicators, such as market value vs. amortized cost, investment spreads widening or contracting, rating actions, payment and default history. The following table contains a rollforward of the allowance for credit losses for available-for-sale fixed maturity securities at December 31, 2020: Rollforward of allowance for credit losses for available-for-sale fixed maturity securities: As of December 31, 2020 Beginning balance, January 1, 2020 $ — Additions to the allowance for credit losses for which credit losses were not previously recorded 5 Reductions for securities sold during the period (realized) — Writeoffs charged against the allowance — Recoveries of amounts previously written off — Ending balance, December 31, 2020 $ 5 Unrealized Appreciation and Depreciation A summary of changes in net unrealized investment appreciation for 2020, 2019 and 2018, is as follows for continuing operations and discontinued operations: 2020 2019 2018 Change in net unrealized investment appreciation Available-for-sale fixed maturities $ 45,305 $ 71,648 $ (57,475) Deferred policy acquisition costs — — 7,274 Income tax effect (9,514) (15,046) 10,543 Cumulative change in accounting principles — — (191,244) Net unrealized investment depreciation of discontinued operations, sold — — 6,714 Total change in net unrealized investment appreciation (depreciation), net of tax $ 35,791 $ 56,602 $ (224,188) The following tables summarize our fixed maturity securities that were in an unrealized loss position reported on a consolidated basis at December 31, 2020 and 2019. The securities are presented by the length of time they have been continuously in an unrealized loss position. Non-credit related unrealized losses are recognized as a component of other comprehensive income and represent other market movements that are not credit related, for example interest rate changes. We have no intent to sell, and it is more likely than not that we will not be required to sell, these securities until the fair value recovers to at least equal our cost basis or the securities mature. December 31, 2020 Less than 12 months 12 months or longer Total Type of Investment Number Fair Gross Unrealized Number Fair Gross Unrealized Depreciation Fair Gross Unrealized Depreciation AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury 5 $ 86,371 $ 25 — $ — $ — $ 86,371 $ 25 Foreign bonds 1 2,000 2 — — — 2,000 2 Corporate bonds Technology, media and telecommunications 1 2,020 15 — — — 2,020 15 Financial services 1 2,995 5 1 3,000 7 5,995 12 Mortgage-backed securities 2 8,099 53 5 118 1 8,217 54 Collateralized mortgage obligations Government national mortgage association 2 12,394 45 1 24 — 12,418 45 Federal home loan mortgage corporation 24 97,691 758 1 26 — 97,717 758 Federal national mortgage association 10 44,677 683 — — — 44,677 683 Total Available-for-Sale Fixed Maturities 46 $ 256,247 $ 1,586 8 $ 3,168 $ 8 $ 259,415 $ 1,594 The unrealized losses on our investments in available-for-sale fixed maturities were the result of interest rate movements. We have no intent to sell, and it is more likely than not that we will not be required to sell, these securities until the fair value recovers to at least equal our cost basis or the securities mature. December 31, 2019 Less than 12 months 12 months or longer Total Type of Investment Number Fair Gross Unrealized Depreciation Number Fair Gross Unrealized Depreciation Fair Gross Unrealized Depreciation AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury — $ — $ — 2 $ 4,733 $ 12 $ 4,733 $ 12 U.S. government agency 3 13,846 104 — — — 13,846 104 Corporate bonds - financial services 3 10,906 142 1 4,913 88 15,819 230 Mortgage-backed securities — — — 13 1,585 21 1,585 21 Collateralized mortgage obligations Government national mortgage association 2 8,444 38 5 3,053 59 11,497 97 Federal home loan mortgage corporation 12 50,829 183 3 4,844 37 55,673 220 Federal national mortgage association 4 23,515 90 3 1,102 18 24,617 108 Total Available-for-Sale Fixed Maturities 24 $ 107,540 $ 557 27 $ 20,230 $ 235 $ 127,770 $ 792

FAIR VALUE OF FINANCIAL INSTRUM

FAIR VALUE OF FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE OF FINANCIAL INSTRUMENTS	FAIR VALUE OF FINANCIAL INSTRUMENTS Current accounting guidance on fair value measurements includes the application of a fair value hierarchy that requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Our financial instruments that are recorded at fair value are categorized into a three-level hierarchy, which is based upon the priority of the inputs to the valuation technique. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets (i.e., Level 1) and the lowest priority to unobservable inputs (i.e., Level 3). If the inputs used to measure fair value fall within different levels of the hierarchy, the category level is based on the lowest priority level input that is significant to the fair value measurement of the financial instrument. Financial instruments recorded at fair value are categorized in the fair value hierarchy as follows: • Level 1 : Valuations are based on unadjusted quoted prices in active markets for identical financial instruments that we have the ability to access. • Level 2 : Valuations are based on quoted prices for similar financial instruments, other than quoted prices included in Level 1, in markets that are not active or on inputs that are observable either directly or indirectly for the full term of the financial instrument. • Level 3 : Valuations are based on pricing or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement of the financial instrument. Such inputs may reflect management's own assumptions about the assumptions a market participant would use in pricing the financial instrument. We review our fair value hierarchy categorizations on a quarterly basis at which time the classification of certain financial instruments may change if the input observations have changed. Transfers between levels, if any, are recorded as of the beginning of the reporting period. To determine the fair value of the majority of our investments, we utilize prices obtained from independent, nationally recognized pricing services. We obtain one price for each security. When the pricing services cannot provide a determination of fair value for a specific security, we obtain non-binding price quotes from broker-dealers with whom we have had several years of experience and who have demonstrated knowledge of the subject security. We request and utilize one broker quote per security. In order to determine the proper classification in the fair value hierarchy for each security where the price is obtained from an independent pricing service, we obtain and evaluate the vendors' pricing procedures and inputs used to price the security, which include unadjusted quoted market prices for identical securities, such as a New York Stock Exchange closing price, and quoted prices for identical securities in markets that are not active. For fixed maturity securities, an evaluation of interest rates and yield curves observable at commonly quoted intervals, volatility, prepayment speeds, credit risks and default rates may also be performed. We have determined that these processes and inputs result in fair values and classifications consistent with the applicable accounting guidance on fair value measurements. When possible, we use quoted market prices to determine the fair value of fixed maturities, equity securities, trading securities and short-term investments. When quoted market prices do not exist, we base estimates of fair value on market information obtained from independent pricing services and brokers or on valuation techniques that are both unobservable and significant to the overall fair value measurement of the financial instrument. Such inputs may reflect management's own assumptions about the assumptions a market participant would use in pricing the financial instrument. Our valuation techniques are discussed in more detail throughout this section. The mortgage loan portfolio consists entirely of commercial mortgage loans. The fair value of our mortgage loans is determined by modeling performed by our third party fund manager based on the stated principal and coupon payments provided for in the loan agreements. These cash flows are then discounted using an appropriate risk-adjusted discount rate to determine the security's fair value. Our other long-term investments consist primarily of our interests in limited liability partnerships that are recorded on the equity method of accounting. The fair value of the partnerships is obtained from the fund managers, which is based on the fair value of the underlying investments held in the partnerships. In management's opinion, these values represent a reasonable estimate of fair value. We have not adjusted the net asset value provided by the fund managers. For cash and cash equivalents and accrued investment income, carrying value is a reasonable estimate of fair value due to the short-term nature of these financial instruments. The Company formed a rabbi trust in 2014 to fund obligations under the United Fire & Casualty Company Non-qualified Deferred Compensation Plan and United Fire Group Supplemental Executive Retirement and Deferral Plan (collectively the "Executive Retirement Plans"). Within the rabbi trust, corporate-owned life insurance ("COLI") policies are utilized as an investment vehicle and source of funding for the Company's Executive Retirement Plans. The COLI policies invest in mutual funds, which are priced daily by independent sources. As of December 31, 2020, the cash surrender value of the COLI policies was $8,557, which is equal to the fair value measured using Level 2 inputs, based on the underlying assets of the COLI policies, and is included in other assets in the Consolidated Balance Sheets. A summary of the carrying value and estimated fair value of our financial instruments from at December 31, 2020 and 2019 is as follows: December 31, 2020 December 31, 2019 Fair Value Carrying Value Fair Value Carrying Value Assets Investments Fixed maturities: Available-for-sale securities $ 1,825,443 $ 1,825,438 $ 1,719,607 $ 1,719,607 Trading securities — — 15,256 15,256 Equity securities 206,685 206,685 299,203 299,203 Mortgage loans 48,932 47,614 43,992 42,448 Other long-term investments 69,305 69,305 78,410 78,410 Short-term investments 175 175 175 175 Cash and cash equivalents 87,948 87,948 120,722 120,722 Corporate-owned life insurance 8,557 8,557 6,777 6,777 Liabilities Long term debt 50,000 50,000 — — The following tables present the categorization for our financial instruments measured at fair value on a recurring basis. The tables include financial instruments at December 31, 2020 and 2019: Fair Value Measurements Description December 31, 2020 Level 1 Level 2 Level 3 AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 149,938 $ — $ 149,938 $ — U.S. government agency 64,518 — 64,518 — States, municipalities and political subdivisions General obligations Midwest 81,980 — 81,980 — Northeast 30,450 — 30,450 — South 109,970 — 109,970 — West 110,021 — 110,021 — Special revenue Midwest 125,098 — 125,098 — Northeast 61,076 — 61,076 — South 226,706 — 226,706 — West 139,399 — 139,399 — Foreign bonds 29,602 — 29,602 — Public utilities 83,502 — 83,502 — Corporate bonds Energy 25,336 — 25,336 — Industrials 43,257 — 43,257 — Consumer goods and services 50,567 — 50,567 — Health care 7,576 — 7,576 — Technology, media and telecommunications 41,636 — 41,636 — Financial services 101,031 — 100,781 250 Mortgage-backed securities 20,577 — 20,577 — Collateralized mortgage obligations Government national mortgage association 86,152 — 86,152 — Federal home loan mortgage corporation 152,843 — 152,843 — Federal national mortgage association 83,282 — 83,282 — Asset-backed securities 926 — 926 Total Available-For-Sale Fixed Maturities $ 1,825,443 $ — $ 1,824,267 $ 1,176 Equity securities Public utilities 16,320 16,320 — — Energy 9,918 9,918 — — Industrials 36,556 36,556 — — Consumer goods and services 32,061 32,061 — — Health care 24,549 24,549 — — Technology, Media & Telecommunications 17,109 17,109 — — Financial Services 69,577 69,577 — — Nonredeemable preferred stocks 595 — 595 Total Equity Securities $ 206,685 $ 206,090 $ — $ 595 Short-Term Investments $ 175 $ 175 $ — $ — Money Market Accounts $ 24,790 $ 24,790 $ — $ — Corporate-Owned Life Insurance $ 8,557 $ 8,557 $ — Total Assets Measured at Fair Value $ 2,065,650 $ 239,612 $ 1,824,267 $ 1,771 Fair Value Measurements Description December 31, 2019 Level 1 Level 2 Level 3 AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 69,491 $ — $ 69,491 $ — U.S. government agency 100,202 — 100,202 — States, municipalities and political subdivisions General obligations Midwest 88,594 — 88,594 — Northeast 31,270 — 31,270 — South 115,203 — 115,203 — West 110,317 — 110,317 — Special revenue Midwest 139,892 — 139,892 — Northeast 61,543 — 61,543 — South 234,666 — 234,666 — West 144,844 — 144,844 — Foreign bonds 5,117 — 5,117 — Public utilities 63,651 — 63,651 — Corporate bonds Energy 30,124 — 30,124 — Industrials 54,015 — 54,015 — Consumer goods and services 49,466 — 49,466 — Health care 9,480 — 9,480 — Technology, media and telecommunications 27,670 — 27,670 — Financial services 100,253 — 100,003 250 Mortgage-backed securities 6,356 — 6,356 — Collateralized mortgage obligations Government national mortgage association 80,356 — 80,356 — Federal home loan mortgage corporation 124,502 — 124,502 — Federal national mortgage association 71,845 — 71,845 — Asset-backed securities 750 — — 750 Total Available-For-Sale Fixed Maturities $ 1,719,607 $ — $ 1,718,607 $ 1,000 TRADING Fixed maturities Bonds Corporate bonds Consumer goods and services $ 2,276 $ — $ 2,276 $ — Health care 4,701 — 4,701 — Technology, media and telecommunications 1,732 — 1,732 — Financial services 2,460 — 2,460 — Redeemable preferred stocks 4,087 4,087 — — Total Trading Securities $ 15,256 $ 4,087 $ 11,169 $ — Equity securities Public utilities $ 16,295 $ 16,295 $ — $ — Energy 14,639 14,639 — — Industrials 57,330 57,330 — — Consumer goods and services 29,935 29,935 — — Health care 27,285 27,285 — — Financial Services 19,265 19,265 — — Technology, media and telecommunications 127,780 127,780 — — Nonredeemable preferred stocks 6,674 6,079 — 595 Total Equity Securities $ 299,203 $ 298,608 $ — $ 595 Short-Term Investments $ 175 $ 175 $ — $ — Money Market Accounts $ 9,334 $ 9,334 $ — $ — Corporate-Owned Life Insurance $ 6,777 $ — $ 6,777 $ — Total Assets Measured at Fair Value $ 2,050,352 $ 312,204 $ 1,736,553 $ 1,595 The fair value of securities that are categorized as Level 1 is based on quoted market prices that are readily and regularly available. We use a market-based approach for valuing all of our Level 2 securities and submit them primarily to a third-party valuation service provider. Any of these securities not valued by this service provider are submitted to another third-party valuation service provider. Both service providers use a market approach to find pricing of similar financial instruments. The market inputs our service providers normally seek to value our securities include the following, listed in approximate order of priority: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including market research publications. The method and inputs for these securities classified as Level 2 are the same regardless of industry category, credit quality, duration, geographical concentration or economic characteristics. For our mortgage-backed securities, collateralized mortgage obligations and asset-backed securities, our service providers use additional market inputs to value these securities, including the following: new issue data, periodic payment information, monthly payment information, collateral performance and real estate analysis from third parties. Our service providers prioritize inputs based on market conditions, and not all inputs listed are available for use in the valuation process for each security on any given day. At least annually, we review the methodologies and assumptions used by our valuation service providers and verify that they are reasonable and representative of the fair value of the underlying securities held in the investment portfolio. We validate the prices obtained from independent pricing services and brokers prior to their use for reporting purposes by evaluating their reasonableness on a monthly basis. In addition, on a quarterly basis, we also test all securities in the portfolio and independently corroborate the valuations obtained from our third-party valuation service providers. Quarterly, we also perform deep dive analysis of the pricing method used by our third-party valuation service provider by selecting a random sample of securities by asset class and reviewing methodologies. In our opinion, the pricing obtained at December 31, 2020 and 2019 was reasonable. For the year ended December 31, 2020, the change in our available-for-sale securities categorized as Level 1 and Level 2 is the result of investment purchases that were made using funds held in our money market accounts, disposals and the change in unrealized gains on both fixed maturities and equity securities. Securities categorized as Level 3 include holdings in certain private placement fixed maturity and equity securities for which an active market does not currently exist. The fair value of our Level 3 private placement securities is determined by management relying on pricing received from our independent pricing services and brokers consistent with the process to estimate fair value for Level 2 securities. However, securities are categorized as Level 3 if these quotes cannot be corroborated by other market observable data due to the unobservable nature of the brokers’ valuation processes. The following table provides a quantitative information about our Level 3 securities at December 31, 2020. Quantitative Information about Level 3 Fair Value Measurements Fair Value at Valuation Technique(s) Unobservable inputs Range of weighted average significant unobservable inputs December 31, 2020 Corporate bonds - financial services $ 250 Fair value equals cost NA NA Fixed Maturities asset-backed securities 926 Discounted cash flow Probability of default 4% - 6% Nonredeemable preferred stocks 595 Discounted cash flow Multiplier 3x - 4x During the twelve month period ended December 31, 2020 and 2019, there were no securities transferred in or out of Level 3. The following table provides a summary of the changes in fair value of our Level 3 securities for 2020: Corporate bonds Asset-backed securities Equities Total Balance at January 1, 2020 $ 250 $ 750 $ 595 $ 1,595 Unrealized gains (1) — 176 — 176 Balance at December 31, 2020 $ 250 $ 926 $ 595 $ 1,771 (1) Unrealized gains are recorded as a component of comprehensive income. The following table provides a summary of the changes in fair value of our Level 3 securities for 2019: Corporate bonds Asset-backed securities Equities Total Balance at January 1, 2019 $ 250 $ 666 $ 595 $ 1,511 Unrealized gains (losses) (1) — 84 — 84 Purchases 100 — — 100 Disposals (100) — — (100) Balance at December 31, 2019 $ 250 $ 750 $ 595 $ 1,595 (1) Unrealized gains (losses) are recorded as a component of comprehensive income. The fixed maturities reported as disposals relate to the receipt of principal on calls or sinking fund bonds, in accordance with the indentures. Commercial Mortgage Loans The following tables present the carrying value of our commercial mortgage loans and additional information at December 31, 2020 and 2019: Commercial Mortgage Loans Loan-to-value December 31, 2020 December 31, 2019 Less than 65% $ 30,361 34,024 65%-75% 17,329 8,496 Total amortized cost $ 47,690 $ 42,520 Valuation allowance (76) (72) Total mortgage loans $ 47,614 $ 42,448 Mortgage Loans by Region December 31, 2020 December 31, 2019 Carrying Value Percent of Total Carrying Value Percent of Total East North Central $ 3,245 6.8 % $ 3,245 7.6 % Southern Atlantic 9,752 20.5 7,026 16.5 East South Central 8,197 17.2 8,358 19.7 New England 6,588 13.8 6,588 15.5 Middle Atlantic 14,936 31.2 15,076 35.5 Mountain 2,227 4.7 2,227 5.2 Other 2,745 5.8 — — Total mortgage loans at amortized cost $ 47,690 100.0 % $ 42,520 100.0 % Mortgage Loans by Property Type December 31, 2020 December 31, 2019 Carrying Value Percent of Total Carrying Value Percent of Total Commercial Multifamily $ 17,038 35.7 % $ 11,741 27.6 % Office 11,861 24.9 11,848 27.9 Industrial 10,124 21.2 10,124 23.8 Retail 2,227 4.7 2,227 5.2 Mixed use/Other 6,440 13.5 6,580 15.5 Total mortgage loans at amortized cost $ 47,690 100.0 % $ 42,520 100.0 % Amortized Cost Basis by Year of Origination and Credit Quality Indicator 2020 2019 2018 Total Commercial mortgage loans: Risk Rating: 1-2 internal grade $ 5,537 $ 8,393 $ 18,676 $ 32,606 3-4 internal grade — 8,496 6,588 15,084 5 internal grade — — — — 6 internal grade — — — — 7 internal grade — — — — Total commercial mortgage loans $ 5,537 $ 16,889 $ 25,264 $ 47,690 Current-period write-offs — — — — Current-period recoveries — — — — Current-period net write-offs $ — $ — $ — $ — Commercial mortgage loans carrying value excludes accrued interest of $168. As of December 31, 2020, all loan receivables were current, with no delinquencies. The commercial mortgage loans originate with an initial loan-to-value ratio to provide sufficient collateral to absorb losses should a loan be required to foreclose. Mortgage loans are evaluated on a quarterly basis for impairment on an individual basis through a monitoring process and review of key credit indicators, such as economic trends, delinquency rates, property valuations, occupancy and rental rates and loan-to-value ratios. A loan is considered impaired when the Company believes it will not collect the contractual principal and interest set forth in the contractual terms of the loan. An internal grade is assigned to each mortgage loan, with a grade of 1 being the highest and least likely for an impairment and the lowest rating of 7 being the most likely for an impairment. An allowance for mortgage loan losses is established on each loan recognizing a loss for amounts which we believe will not be collected according to the contractual terms of the respective loan agreement. As of December 31, 2020, the Company had an allowance for mortgage loan losses of $76, summarized in the following rollforward: Rollforward of allowance for mortgage loan losses: As of December 31, 2020 Beginning balance, January 1, 2020 $ 72 Current-period provision for expected credit losses 4 Write-off charged against the allowance, if any — Recoveries of amounts previously written off, if any — Ending balance of the allowance for mortgage loan losses, December 31, 2020 $ 76

REINSURANCE

REINSURANCE	12 Months Ended
	Dec. 31, 2020
Reinsurance Disclosures [Abstract]
REINSURANCE	REINSURANCE Continuing Operations - Property and Casualty Insurance Business Ceded and Assumed Reinsurance Reinsurance is a contract by which one insurer, called the reinsurer, agrees to cover, under certain defined circumstances, a portion of the losses incurred by a primary insurer if a claim is made under a policy issued by the primary insurer. Our property and casualty insurance companies follow the industry practice of reinsuring a portion of their exposure by ceding to reinsurers a portion of the premium received and a portion of the risk under the policies written. We purchase reinsurance to reduce the net liability on individual risks to predetermined limits and to protect us against catastrophic losses, such as a hurricane or tornado. We do not engage in any reinsurance transactions classified as finite risk reinsurance. We account for premiums, written and earned, and losses incurred net of reinsurance ceded. The ceding of insurance does not legally discharge us from primary liability under our policies, and we must pay the loss if the reinsurer fails to meet its obligation. We periodically monitor the financial condition of our reinsurers to confirm that they are financially stable. We believe that all of our reinsurers are in an acceptable financial condition and there were no reinsurance balances at December 31, 2020 for which collection is at risk that would result in a material impact on our Consolidated Financial Statements. The amount of reinsurance recoverable on paid losses totaled $28,887 and $3,883 at December 31, 2020 and 2019, respectively. We also assume both property and casualty insurance from other insurance or reinsurance companies. Most of the business we have assumed is property insurance, with an emphasis on catastrophe coverage. Premiums and losses and loss settlement expenses related to our ceded and assumed business are as follows: Years Ended December 31, 2020 2019 2018 Ceded Business Ceded premiums written $ 88,339 $ 74,511 $ 66,800 Ceded premiums earned 84,924 72,023 63,487 Loss and loss settlement expenses ceded 185,653 28,447 22,317 Assumed Business Assumed premiums written $ 34,371 $ 27,869 $ 16,761 Assumed premiums earned 33,679 25,412 16,957 Loss and loss settlement expenses assumed 29,141 14,813 (3,954) In 2020, we renewed our participation in all of our assumed programs. Loss and loss settlement expenses ceded increased in 2020 as compared to 2019, primarily due to the August Midwest derecho, the recovery of the all lines aggregate program and increase in severity of commercial property and workers' compensation losses. In 2019 we added two additional assumed programs and did not renew one program from 2018. Loss and loss settlement expenses ceded increased in 2019 as compared to 2018, primarily due to an increase in severity of commercial auto losses, assumed reinsurance losses, extra contractual obligations and catastrophe losses. In 2018, we renewed our participation in all of our assumed programs. Refer to Note 5 "Reserves for Losses and Loss Settlement Expenses" for an analysis of changes in our overall property and casualty insurance reserves. Reinsurance Programs and Retentions We have several programs that provide reinsurance coverage. This reinsurance coverage limits the risk of loss that we retain by reinsuring direct risks in excess of our retention limits. The following table provides a summary of our primary reinsurance programs. Retention amounts reflect the accumulated retentions and co-participation of all layers within a program. For 2020, there was an all lines annual aggregate excess of loss program with variable retention of 6.37 percent of gross net earned premium with a minimum retention of $58.5 million and a maximum of $71.5 million. Our all lines aggregate recovery is also limited to $30.0 million and 75.0 percent of the program was placed. For 2020, the Company recovered the maximum of $22.5 million from the all lines annual aggregate excess of loss program. For 2019, there was an all lines annual aggregate excess of loss program with a variable retention of 6.66 percent of gross net earned premium with a minimum retention of $58.5 million and a maximum of $71.5 million. Our all lines aggregate recovery is also limited to a maximum of $30.0 million. For 2018, there was an all lines annual aggregate excess of loss program with a variable retention of 6.78 percent of gross net earned premium with a minimum retention of $58.5 million and a maximum of $71.5 million. Our all lines aggregate recovery is also limited to a maximum of $30.0 million. For 2019 and 2018, the Company did not have any recoveries from the all lines annual aggregate loss program. 2020 Reinsurance Programs Type of Reinsurance Stated Retention Limits Coverage Casualty excess of loss $ 2,500 $ 60,000 100 % of $ 57,500 Property excess of loss 2,500 25,000 100 % of $ 22,500 Surety excess of loss 1,500 45,000 100 % of $ 43,500 Property catastrophe, excess 20,000 250,000 100 % of $ 230,000 Boiler and machinery N/A 50,000 100 % of $ 50,000 2019 Reinsurance Programs Type of Reinsurance Stated Retention Limits Coverage Casualty excess of loss $ 2,500 $ 60,000 100 % of $ 57,500 Property excess of loss 2,500 25,000 100 % of $ 22,500 Surety excess of loss 1,500 45,000 100 % of $ 43,500 Property catastrophe, excess 20,000 250,000 100 % of $ 230,000 Boiler and machinery N/A 50,000 100 % of $ 50,000 2018 Reinsurance Programs Type of Reinsurance Stated Retention Limits Coverage Casualty excess of loss $ 2,500 $ 60,000 100 % of $ 57,500 Property excess of loss 2,500 25,000 100 % of $ 22,500 Surety excess of loss 1,500 45,000 100 % of $ 43,500 Property catastrophe, excess 20,000 250,000 100 % of $ 230,000 Boiler and machinery N/A 50,000 100 % of $ 50,000 If we incur catastrophe losses and loss settlement expenses that exceed the coverage limits of our reinsurance program, our property catastrophe program provides one guaranteed reinstatement. In such an instance, we are required to pay the reinsurers a reinstatement premium equal to the full amount of the original premium, which will reinstate the full amount of reinsurance available under the property catastrophe program. Discontinued Operations - Life Insurance Business Premiums and losses and loss settlement expenses related to our ceded business are as follows: Years Ended December 31, 2020 2019 2018 Ceded Business Ceded insurance in-force $ — $ — $ — Ceded premiums earned — — 716 Loss and loss settlement expenses ceded — — 1,473 The ceding of insurance did not legally discharge United Life from primary liability under its policies. United Life must pay the loss if the reinsurer fails to meet its obligations. United Life periodically monitored the financial condition of their reinsurers to confirm that they were financially stable and had strong credit ratings. We believe that all of the reinsurers were in an acceptable financial condition.

RESERVES FOR LOSSES AND LOSS SE

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES	12 Months Ended
	Dec. 31, 2020
Insurance Loss Reserves [Abstract]
RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES	RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES Property insurance indemnifies an insured with an interest in physical property for loss of, or damage to, such property or the loss of its income-producing abilities. Casualty insurance primarily covers liability for damage to property of, or injury to, a person or entity other than the insured. In most cases, casualty insurance also obligates the insurance company to provide a defense for the insured in litigation, arising out of events covered by the policy. Liabilities for losses and loss settlement expenses reflect management's best estimates at a given point in time of what we expect to pay for claims that have been reported and those that have been incurred but not reported ("IBNR"), based on known facts, circumstances, and historical trends. Because property and casualty insurance reserves are estimates of the unpaid portions of incurred losses that have been reported to us, as well as losses that have been incurred but not reported, the establishment of appropriate reserves, including reserves for catastrophes, is an inherently uncertain and complex process. The ultimate cost of losses and related loss settlement expenses may vary materially from recorded amounts. We regularly update our reserve estimates as new information becomes available and as events unfold that may affect the resolution of unsettled claims. Changes in prior year reserve estimates, which may be material, are reported as a component of losses and loss settlement expenses incurred in the period such changes are determined. The determination of reserves (particularly those relating to liability lines of insurance that have relatively longer lag in claim reporting) requires significant work to reasonably project expected future claim reporting and payment patterns. If, during the course of our regular monitoring of reserves, we determine that coverages previously written are incurring higher than expected losses, we will take action that may include, among other things, increasing the related reserves. Any adjustments we make to reserves are reflected in operating results in the year in which we make those adjustments. We engage an independent actuary, Regnier Consulting Group, Inc. ("Regnier"), to render an opinion as to the reasonableness of our statutory reserves annually. The actuarial opinion is filed in those states where we are licensed. On a quarterly basis, United Fire's team of internal actuaries performs a detailed actuarial review of IBNR reserves. This review includes a comparison of results from the most recent analysis of reserves completed by both our internal and external actuaries. Senior management meets with our internal actuary to review, on a regular and quarterly basis, the adequacy of carried reserves based on results from this actuarial analysis. There are two fundamental types or sources of IBNR reserves. We record IBNR reserves for "normal" types of claims and also specific IBNR reserves related to unique circumstances or events. A major hurricane is an example of an event that might necessitate establishing specific IBNR reserves because an analysis of existing historical data would not provide an appropriate estimate. Our IBNR methodologies and assumptions are reviewed periodically, but changes are infrequent. In response to an increase in severity of losses and an increase in distracted driving claims, we revised our commercial automobile assumptions, resulting in an increase to our carried loss IBNR. We also reviewed our methodology and assumptions in our product liability line, associated with our construction defects business, and assumptions due to improvement in development patterns related to the statute of limitations on accident years that have matured 13 to 15 years which haven't developed to the extent we initially expected. Besides the changes to our assumptions used for our commercial automobile line and product liability line, we continually review and revise items affecting our projections of required reserves for unpaid loss and loss adjustment expense ("LAE"). Items reviewed and revised include development factors for paid and reported loss, paid development factors for allocated LAE, and the ratios of paid unallocated LAE to paid loss. We do not discount loss reserves based on the time value of money. The following table provides an analysis of changes in our property and casualty losses and loss settlement expense reserves for 2020, 2019 and 2018 (net of reinsurance amounts): Years Ended December 31, 2020 2019 2018 Gross liability for losses and loss settlement expenses $ 1,421,754 $ 1,312,483 $ 1,224,183 Ceded losses and loss settlement expenses (68,536) (57,094) (59,871) Net liability for losses and loss settlement expenses $ 1,353,218 $ 1,255,389 $ 1,164,312 Losses and loss settlement expenses incurred Current year $ 887,119 $ 835,507 $ 785,778 Prior years (17,652) (5,335) (54,167) Total incurred $ 869,467 $ 830,172 $ 731,611 Losses and loss settlement expense payments Current year $ 354,635 $ 333,975 $ 306,032 Prior years 421,762 398,368 334,502 Total paid $ 776,397 $ 732,343 $ 640,534 Net liability for losses and loss settlement expenses $ 1,446,288 $ 1,353,218 $ 1,255,389 Ceded loss and loss settlement expenses 131,843 68,536 57,094 Gross liability for losses and loss settlement expenses $ 1,578,131 $ 1,421,754 $ 1,312,483 There are a multitude of factors that can impact loss reserve development. Those factors include, but are not limited to: historical data, the potential impact of various loss reserve development factors and trends including historical loss experience, legislative enactments, judicial decisions, legal developments in imposition of damages, experience with alternative dispute resolution, results of our medical bill review process, the potential impact of salvage and subrogation and changes and trends in general economic conditions, including the effects of inflation. All of these factors influence our estimates of required reserves and for long tail lines these factors can change over the course of the settlement of the claim. However, there is no precise method for evaluating the specific monetary impact of any individual factor on the development of reserves. Generally, we base reserves for each claim on the estimated ultimate exposure for that claim. We believe that it is appropriate and reasonable to establish a best estimate for reserves within a range of reasonable estimates, especially when we are reserving for claims for bodily injury, disabilities and similar claims, for which settlements and verdicts can vary widely. Our reserving philosophy may result in favorable reserve development in future years that will decrease losses and loss settlement expenses for prior year claims in the year of adjustment. We realize that this philosophy, coupled with what we believe to be aggressive and successful claims management and loss settlement practices, has resulted in year-to-year redundancies in reserves. We believe our approach produces recorded reserves that are reasonably consistent as to their relative position within a range of reasonable reserves from year-to-year. However, conditions and trends that have affected the reserve development for a given year do change. Therefore, such development cannot be used to project future reserve redundancies or deficiencies. We are not aware of any significant contingent liabilities related to environmental issues. Because of the type of property coverage we write, we have potential exposure to environmental pollution, mold and asbestos claims. Our underwriters are aware of these exposures and use riders or endorsements to limit exposure. Reserve Development The significant drivers of the favorable reserve development in 2020 were workers' compensation which had $25,428 favorable development followed by commercial fire and allied lines which had $10,655 favorable development, fidelity and surety with $2,068 favorable development and personal automobile with $1,851 favorable development. The favorable development for workers' compensation was primarily from reductions in reserves for reported claims which were more than sufficient to offset paid loss. Reductions in reserves for IBNR claims also contributed favorable development in addition to LAE where reductions in reserves more than sufficient to offset payments. Commercial fire and allied lines developed favorably because reductions in reserves for reported claims combined with reductions in reserves for IBNR claims were more than sufficient to offset paid loss. LAE also contributed favorable development with reductions in reserves more than sufficient to offset payments. Fidelity and surety loss developed favorably because a reduction in reserves for IBNR claims was more than sufficient to offset both paid loss and increases in reserves for reported claims. The personal automobile line of business developed favorably because reductions of reserves for reported claims combined with reductions of reserves for IBNR claims were more than sufficient to offset paid loss. LAE also contributed favorable development with reductions in reserves more than sufficient to offset payments. Much of the favorable development was offset by unfavorable development from three lines with the largest contribution coming from commercial liability with $12,845, reinsurance assumed with $5,972 and commercial automobile with $4,024. The commercial liability line of business experienced unfavorable development due to paid loss which was greater than reductions in reserves for unpaid loss. LAE developed favorably and partially offset the unfavorable loss development. The unfavorable development for reinsurance assumed was due to paid loss which was greater than reductions in reserves for unpaid loss. The commercial automobile line of business experienced unfavorable development because paid loss was greater than reductions in reserves for unpaid loss, but a portion of the unfavorable loss development was offset by favorable development from LAE where payments were more than offset by reductions of reserves for unpaid loss adjustment expense. On an all lines combined basis, favorable development is attributable to LAE which continues to benefit from additional litigation management efforts. The significant drivers of the favorable reserve development in 2019 were our workers' compensation partially offset by unfavorable development primarily for commercial liability and commercial automobile. Workers' compensation favorable development was primarily from reserve reductions for both reported claims and loss IBNR which were more than sufficient to offset paid loss with additional favorable development coming from LAE, where the reduction in LAE reserves was more than sufficient to offset paid LAE. The other lines with relatively small contributions to development, either favorable or unfavorable, generally experienced favorable development for LAE. Commercial liability unfavorable development was primarily from paid loss which exceeded reserve reductions for both reported claims and loss IBNR; additional unfavorable development came from LAE where paid LAE exceeded reductions of LAE reserves. Commercial liability and commercial automobile continue to be adversely affected by reserve strengthening for both reported claims and loss IBNR in response to an increase in severity of claims. Commercial liability continues to receive umbrella claims which flow in from commercial automobile. The significant drivers of the favorable reserve development in 2018 were our workers' compensation, reinsurance assumed, commercial automobile and fidelity and surety. During 2018 the only individual line with unfavorable development was commercial liability. Workers' compensation favorable development was primarily from reserve reductions for both reported claims and loss IBNR which were more than sufficient to offset paid loss with The following tables provide information about incurred and paid losses and loss settlement expense development as of December 31, 2020, net of reinsurance, as well as cumulative development, cumulative claim frequency and IBNR liabilities. Claim data for Mercer Insurance Group, Inc., which was acquired on March 28, 2011, is presented retrospectively. The cumulative number of reported claims, for calendar year 2020, 2019 and 2018, are counted for all lines of business on a per claimant per coverage basis and a single event may result in multiple claims due to the involvement of multiple individual claimants and / or multiple independent coverages. Claim counts for calendar years 2016 and prior are counted on a per claim and per coverage basis. Claim counts include open claims, claims that have been paid and closed, and reported claims that have been closed without the need for any payment. Line of business: Commercial other liability Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 81,522 $ 64,738 $ 88,371 $ 88,200 $ 79,591 $ 80,801 $ 81,463 $ 80,338 $ 81,694 $ 81,394 $ 11,202 (128) 5,634 2012 100,389 96,158 94,195 91,980 92,537 91,346 89,731 91,571 89,900 12,862 (10,489) 5,841 2013 104,982 91,460 90,502 86,119 85,399 88,816 86,082 85,999 3,498 (18,983) 6,406 2014 118,928 117,958 106,486 97,809 102,487 105,507 107,417 4,907 (11,511) 6,570 2015 137,386 125,307 120,005 127,091 129,945 131,325 10,405 (6,061) 7,732 2016 139,144 130,041 136,275 142,397 140,784 15,698 1,640 8,882 2017 139,602 139,032 152,547 156,369 24,426 16,767 8,883 2018 163,059 172,894 176,496 34,486 13,437 8,590 2019 149,173 169,344 46,518 20,171 7,537 2020 171,013 83,792 4,478 Total $ 1,310,041 Line of business: Commercial other liability Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 6,236 $ 13,670 $ 26,260 $ 40,595 $ 50,146 $ 56,150 $ 62,165 $ 64,541 $ 66,500 $ 68,052 2012 6,875 24,620 39,948 55,316 64,574 69,800 71,773 73,819 74,644 2013 9,835 25,228 39,953 54,559 65,773 72,115 75,961 78,448 2014 10,207 29,679 50,211 70,363 83,109 93,060 96,509 2015 11,185 27,182 53,901 74,292 96,339 104,472 2016 13,782 38,184 63,526 88,885 102,757 2017 17,716 43,172 70,500 91,984 2018 16,200 44,772 79,168 2019 18,221 46,986 2020 17,011 Total $ 760,031 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 35,801 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 585,811 Line of business: Commercial fire and allied Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 148,220 $ 142,330 $ 117,082 $ 120,492 $ 119,820 $ 120,219 $ 121,434 $ 121,319 $ 121,749 $ 121,982 $ 285 (26,238) 16,079 2012 138,602 110,448 108,774 108,047 107,958 108,623 109,687 109,480 110,245 634 (28,357) 6,466 2013 91,521 88,550 91,498 92,212 93,826 93,858 92,988 92,855 61 1,334 6,662 2014 126,216 131,198 128,762 128,185 128,503 126,811 127,068 108 852 7,935 2015 103,177 108,293 110,633 108,235 105,218 104,646 144 1,469 7,579 2016 147,473 144,208 143,721 143,724 143,108 667 (4,365) 9,849 2017 155,139 160,240 160,946 161,693 1,536 6,554 13,445 2018 143,280 146,951 146,378 2,610 3,098 10,683 2019 164,030 155,482 4,271 (8,548) 10,992 2020 207,207 29,773 13,368 Total $ 1,370,664 Line of business: Commercial fire and allied Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 85,585 $ 104,800 $ 109,429 $ 112,497 $ 116,614 $ 118,183 $ 120,178 $ 120,731 $ 121,063 $ 121,157 2012 71,008 94,380 100,078 103,197 105,250 106,521 106,740 107,992 108,123 2013 59,331 78,226 82,853 86,115 89,200 91,493 92,012 92,472 2014 84,456 113,663 116,750 122,370 123,697 125,745 126,307 2015 67,217 90,454 95,515 101,367 104,115 103,975 2016 92,895 125,962 132,429 137,909 139,353 2017 99,484 137,058 145,900 152,219 2018 92,770 123,559 133,703 2019 100,980 136,084 2020 128,704 Total $ 1,242,097 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 723 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 129,290 Line of business: Commercial automobile Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 84,887 $ 87,299 $ 90,750 $ 92,519 $ 92,379 $ 91,336 $ 90,766 $ 90,838 $ 90,643 $ 90,972 $ 32 6,085 15,262 2012 100,039 90,848 94,755 95,321 96,594 96,389 96,305 96,059 96,176 — (3,863) 14,365 2013 104,356 98,037 102,943 103,726 104,980 105,248 104,886 106,140 356 1,784 15,528 2014 107,723 106,076 113,720 118,869 120,385 121,077 120,599 457 12,876 17,320 2015 125,506 129,816 132,206 138,987 137,395 137,335 500 11,829 20,079 2016 174,018 175,357 174,337 175,657 173,823 1,449 (195) 27,288 2017 227,919 224,553 235,110 233,159 5,553 5,240 32,838 2018 236,629 245,173 253,045 14,134 16,416 34,380 2019 279,229 291,139 38,451 11,910 34,393 2020 243,360 71,185 22,331 Total $ 1,745,748 Line of business: Commercial automobile Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 34,332 $ 50,931 $ 65,021 $ 79,383 $ 85,348 $ 87,475 $ 88,609 $ 89,459 $ 90,515 $ 90,677 2012 39,247 57,201 71,469 82,944 90,292 93,179 94,747 94,983 96,176 2013 43,592 67,630 79,663 90,780 96,375 100,058 101,580 103,037 2014 45,704 68,033 87,590 99,922 109,682 113,751 116,843 2015 50,782 78,225 99,201 118,395 129,317 134,100 2016 66,013 103,528 128,157 148,224 164,341 2017 81,311 126,644 166,170 197,893 2018 81,572 138,092 187,405 2019 91,919 153,244 2020 67,660 Total $ 1,311,376 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance (80) Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 434,293 Line of business: Workers' compensation Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 39,967 $ 38,481 $ 35,352 $ 34,309 $ 33,585 $ 33,314 $ 33,352 $ 32,707 $ 32,384 $ 31,621 $ 159 (8,346) 3,965 2012 48,848 46,279 42,158 38,423 38,553 39,015 39,182 39,063 38,290 229 (10,558) 3,992 2013 64,048 62,579 56,369 54,584 52,761 51,753 50,984 50,349 307 (13,699) 4,255 2014 64,051 60,729 58,284 56,630 54,636 53,023 52,889 699 (11,162) 4,801 2015 53,788 55,578 51,003 46,682 46,019 44,706 578 (9,082) 5,666 2016 70,419 66,575 61,648 55,168 53,964 815 (16,455) 7,927 2017 76,184 69,528 55,982 51,874 1,182 (24,310) 8,173 2018 71,972 67,883 59,192 1,802 (12,780) 7,947 2019 52,136 49,189 2,335 (2,947) 7,113 2020 45,365 4,289 3,909 Total $ 477,439 Line of business: Workers' compensation Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 10,322 $ 21,678 $ 26,033 $ 27,497 $ 28,247 $ 29,022 $ 29,453 $ 29,700 $ 29,890 $ 30,573 2012 11,802 23,023 28,397 30,933 33,063 34,330 35,388 36,060 36,520 2013 14,136 30,209 38,023 42,941 45,078 47,071 47,572 48,093 2014 13,965 30,289 38,441 42,964 45,193 45,825 46,299 2015 12,063 27,304 35,229 38,424 39,305 40,034 2016 14,413 32,345 40,680 45,743 47,082 2017 14,647 31,309 38,083 41,672 2018 16,949 35,369 43,189 2019 13,582 29,668 2020 17,603 Total $ 380,733 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 19,345 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 116,050 Line of business: Personal Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 50,014 $ 48,534 $ 47,090 $ 47,035 $ 46,968 $ 47,013 $ 46,733 $ 46,761 $ 46,752 $ 46,751 $ — (3,263) 14,848 2012 47,924 46,199 46,403 46,150 44,715 44,352 44,165 44,158 44,160 1 (3,764) 10,790 2013 39,232 38,525 37,262 37,086 36,729 36,661 36,486 36,467 1 (2,765) 9,250 2014 53,910 52,661 52,944 52,782 52,615 52,702 52,810 12 (1,100) 10,959 2015 42,848 41,088 40,336 40,368 40,220 40,194 22 (2,654) 9,548 2016 48,072 45,840 45,379 45,961 45,113 58 (2,959) 11,896 2017 60,330 59,342 58,695 58,544 119 (1,786) 14,691 2018 51,639 51,721 52,715 365 1,076 13,658 2019 59,547 58,378 581 (1,169) 13,466 2020 81,206 6,588 15,585 Total $ 516,338 Line of business: Personal Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 36,489 $ 43,801 $ 45,306 $ 45,949 $ 46,487 $ 46,573 $ 46,575 $ 46,650 $ 46,752 $ 46,751 2012 30,415 41,979 43,375 44,448 43,569 44,139 44,158 44,158 44,159 2013 25,505 32,788 34,297 35,306 36,155 36,323 36,397 36,466 2014 37,055 47,912 49,710 51,837 52,018 52,543 52,519 2015 29,551 37,431 39,027 39,428 39,865 40,029 2016 32,999 40,910 42,660 44,046 44,618 2017 42,135 53,111 55,982 57,169 2018 37,410 47,433 49,464 2019 40,544 52,390 2020 54,181 Total $ 477,746 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 620 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 39,210 The reconciliation of the net incurred and loss development tables to the liability for unpaid losses and loss settlement expenses in the consolidated statement of financial position is as follows. December 31, 2020 Net outstanding liabilities for unpaid losses and allocated loss settlement expenses: Commercial other liability $ 585,811 Commercial fire and allied 129,290 Commercial automobile 434,293 Commercial workers' compensation 116,050 Personal 39,210 All other lines 43,045 Net outstanding liabilities for unpaid losses and allocated loss settlement expenses 1,347,699 Net outstanding liabilities for unpaid unallocated loss settlement expenses 97,379 Fair value adjustment (purchase accounting adjustment for Mercer acquisition) 1,210 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance 1,446,288 Reinsurance recoverable on unpaid losses and allocated loss settlement expenses: Commercial other liability 29,497 Commercial fire and allied 42,481 Commercial automobile 3,334 Commercial workers' compensation 47,130 Personal 8,867 All other lines 1,692 Reinsurance recoverable on unpaid losses and allocated loss settlement expenses 133,001 Reinsurance fair value amortization (purchase accounting adjustment for Mercer acquisition) (1,158) Total reinsurance recoverable on unpaid losses and loss settlement expenses 131,843 Total gross liability for unpaid losses and loss settlement expenses $ 1,578,131 The following is supplementary information about average historical claims duration as of December 31, 2020. Average annual percentage payout of incurred claims by age, net of reinsurance Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 Year 10 (Unaudited) Commercial other liability 9.6 % 16.0 % 18.0 % 16.8 % 12.3 % 7.2 % 4.3 % 2.7 % 1.7 % 1.9 % Commercial fire and allied 64.6 % 21.4 % 4.8 % 3.8 % 2.2 % 1.3 % 0.7 % 0.7 % 0.2 % 0.1 % Commercial automobile 35.9 % 20.3 % 15.5 % 12.5 % 7.5 % 3.1 % 1.7 % 0.9 % 1.2 % 0.2 % Commercial workers' compensation 29.5 % 32.4 % 14.8 % 7.6 % 3.5 % 2.5 % 1.5 % 1.2 % 0.9 % 2.2 % Personal 71.3 % 19.7 % 3.8 % 2.4 % 0.7 % 0.7 % 0.1 % 0.1 % 0.1 % — %

STATUTORY REPORTING, CAPITAL RE

STATUTORY REPORTING, CAPITAL REQUIREMENTS AND DIVIDENDS AND RETAINED EARNINGS RESTRICTIONS	12 Months Ended
	Dec. 31, 2020
Statutory Insurance Financial Information [Abstract]
STATUTORY REPORTING, CAPITAL REQUIREMENTS AND DIVIDENDS AND RETAINED EARNINGS RESTRICTIONS	STATUTORY REPORTING, CAPITAL REQUIREMENTS AND DIVIDENDS AND RETAINED EARNINGS RESTRICTIONS Statutory capital and surplus in regards to policyholders at December 31, 2020, 2019 and 2018 and statutory net income (loss) for the years then ended are as follows: Statutory Capital and Surplus Statutory Net Income (Loss) 2020 Property and casualty business $ 671,599 $ (17,705) 2019 Property and casualty business $ 707,571 $ (22,393) 2018 Property and casualty business $ 774,257 $ 219,065 Life, accident and health business (1) — 3,548 (1) The 2018 Life, accident and health business only includes results prior to the closing of the sale of United Life Insurance Company, which closed on March 30, 2018. Prior to the closing of the sale, United Fire & Casualty Company owned United Life Insurance Company, accordingly, the property and casualty statutory capital and surplus includes life, accident and health statutory capital and surplus, and therefore represents our total consolidated statutory capital and surplus. State insurance holding company laws and regulations generally require approval from the insurer's domicile state insurance Commissioner for any material transaction or extraordinary dividend. For property and casualty insurers, a material transaction is defined as any sale, loan, exchange, transfer or guarantee with an affiliate where the aggregate value of the transaction exceeds 25 percent of the insurer's policyholders' surplus or three percent of its admitted assets (measured at December 31 of the preceding year), whichever is less. For life insurers, a material transaction with an affiliate is defined as a transaction with an aggregate value exceeding three percent of the life insurer's admitted assets (measured at December 31 of the preceding year). The Company executed a $50,000 surplus note private placement transaction on December 15, 2020 among UF&C and Federated Mutual and Federated Life. See additional details in Note 14 "Debt." State laws and regulations generally limit the amount of funds that an insurance company may distribute to a parent as a dividend without Commissioner approval. As a holding company with no independent operations of its own, United Fire Group, Inc. relies on dividends received from its insurance company subsidiaries in order to pay dividends to its common shareholders. Dividends payable by our insurance subsidiaries are governed by the laws in the states in which they are domiciled. In all cases, these state laws permit the payment of dividends only from earned surplus arising from business operations. For example, under Iowa law, the maximum dividend or distribution that may be paid within a 12-month period without prior approval of the Iowa Insurance Commissioner is generally restricted to the greater of 10 percent of statutory surplus as of the preceding December 31, or net income of the preceding calendar year on a statutory basis, not greater than earned statutory surplus. Other states in which our insurance company subsidiaries are domiciled may impose similar restrictions on dividends and distributions. Based on these restrictions, at December 31, 2020, our insurance company subsidiary, United Fire & Casualty, is able to make a minimum of $66.8 million in dividend payments without prior regulatory approval. At December 31, 2020, we were in compliance with applicable state laws and regulations. We paid dividends to our common shareholders of $28,526, $32,662 and $105,408 in 2020, 2019 and 2018, respectively. Payments of any future dividends and the amounts of such dividends, however, will depend upon factors such as net income, financial condition, capital requirements, and general business conditions. We will only pay dividends if declared by our Board of Directors, out of funds legally available, and subject to any other restrictions that may be applicable to us. In 2020, 2019 and 2018, United Fire & Casualty Company received dividends from its wholly owned subsidiaries of $62,400, $6,300 and $8,500, respectively. In 2020, 2019 and 2018, United Fire & Casualty Company paid dividends to United Fire Group, Inc. totaling $4,000 , $57,000 and $105,000, respectively. These intercompany dividend payments are eliminated for reporting in our Consolidated Financial Statements. Our property and casualty subsidiaries are required to prepare and file statutory-basis financial statements in conformity with the National Association of Insurance Commissioners ("NAIC") Accounting Practices and Procedures Manual, subject to any deviations prescribed or permitted by the applicable insurance commissioner and/or director. The accounting principles used to prepare these statutory-basis financial statements follow prescribed or permitted accounting practices that differ from GAAP. Prescribed statutory accounting principles include state laws, regulations and general administrative rules issued by the state of domicile, as well as a variety of publications and manuals of the NAIC. Permitted accounting practices encompass all accounting practices not prescribed, but allowed by the state of domicile. No material permitted accounting practices were used to prepare our statutory-basis financial statements during 2020, 2019 and 2018. Statutory accounting principles primarily differ from GAAP in that policy acquisition and certain sales inducement costs are charged to expense as incurred, goodwill is amortized, life insurance reserves are established based on different actuarial assumptions and the values reported for investments, pension obligations and deferred taxes are established on a different basis. We are directed by the state insurance departments' solvency regulations to calculate a required minimum level of statutory capital and surplus based on insurance risk factors. The risk-based capital results are used by the NAIC and state insurance departments to identify companies that merit regulatory attention or the initiation of regulatory action. United Fire & Casualty Company and its property and casualty insurance subsidiaries and affiliates had statutory capital and surplus in regards to policyholders well in excess of their required levels at December 31, 2020.

FEDERAL INCOME TAX

FEDERAL INCOME TAX	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
FEDERAL INCOME TAX	FEDERAL INCOME TAX The Tax Act was enacted on December 22, 2017. The Tax Act significantly revised the U.S. corporate income tax laws including lowering the U.S. federal corporate tax rate from 35 percent to 21 percent, effective January 1, 2018. In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, which addresses how a company recognizes provisional amounts when a company does not have the necessary information available, prepared or analyzed in reasonable detail to complete its accounting for the effect of the changes in the Tax Act. The measurement period ends when a company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. As of December 31, 2018 we have completed accounting for the tax effects of enactment of the Tax Act and no adjustments were made during the measurement period. On March 27, 2020, the CARES Act was enacted in response to the COVID-19 pandemic. The CARES Act, among other things, permits NOL carryovers and carrybacks to offset 100 percent of taxable income for taxable years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2018, 2019, and 2020 to be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes. The Company has considered the implications of the CARES Act on its tax provision and has included an income tax benefit o f $18.6 million as the result of this Act. Federal income tax expense (benefit) from both continuing and discontinued operations is composed of the following: Years Ended December 31, 2020 2019 2018 Current $ (46,861) $ (7,843) $ 18,493 Deferred (9,948) 9,902 (21,791) Total $ (56,809) $ 2,059 $ (3,298) A reconciliation of income tax expense (benefit) computed at the applicable federal tax rate of 21.0 percent in 2020, 2019 and 2018 to the amount recorded in the accompanying Consolidated Statements of Income and Comprehensive Income is as follows: Years Ended December 31, 2020 2019 2018 Computed expected income tax expense (benefit) $ (35,598) $ 3,544 $ 5,114 The CARES Act (18,562) — — Tax-exempt municipal bond interest income (3,669) (3,961) (4,235) Nontaxable dividend income (517) (594) (591) Goodwill impairment 3,169 — — Valuation allowance reduction — — (329) Compensation 695 1,638 (497) Reinsurance — 998 — Research and development credit (2,045) — — Other, net (282) 434 (2,760) Consolidated federal income tax expense (benefit) $ (56,809) $ 2,059 $ (3,298) Reconciliation of consolidated federal income tax expense (benefit) from: Continuing operations $ (56,809) $ 2,059 $ (11,405) Gain on sale of discontinued operations — — 7,544 Discontinued operations — — 563 Consolidated federal income tax expense (benefit) $ (56,809) $ 2,059 $ (3,298) We measure certain deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which is 21.0 percent. The significant components of our net deferred tax liability at December 31, 2020 and 2019 are as follows: December 31, 2020 2019 Deferred tax liabilities Net unrealized appreciation on investment securities: Equity securities $ 33,096 $ 48,652 All other securities 22,082 12,568 Deferred policy acquisition costs 18,289 19,801 Investments in partnerships 964 2,156 Prepaid pension cost 4,553 4,441 Net bond discount accretion 383 357 Depreciation 4,187 1,908 Revaluation of investment basis (1) 325 377 Identifiable intangible assets (1) 1,391 1,540 Capitalized Software 4,891 — Other 1,568 1,416 Gross deferred tax liability 91,729 $ 93,216 Deferred tax assets Financial statement reserves in excess of income tax reserves $ 23,851 $ 20,845 Unearned premium adjustment 18,979 20,816 Net operating loss carryforwards — 1,708 Underfunded benefit plan obligation 4,295 9,072 Post-retirement benefits other than pensions 9,533 10,785 Other-than-temporary impairment of investments 1,974 2,094 Compensation expense related to stock options 2,307 2,394 Nonqualified deferred compensation 2,066 1,623 Other 3,795 3,293 Deferred tax asset $ 66,800 $ 72,630 Net deferred tax liability $ 24,929 $ 20,586 (1) Related to our acquisition of Mercer Insurance Group, Inc.

EMPLOYEE BENEFITS

EMPLOYEE BENEFITS	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
EMPLOYEE BENEFITS	EMPLOYEE BENEFITS We offer various benefits to our employees including a noncontributory defined benefit pension plan, an employee/retiree health and dental benefit plan. Pension and Post-Retirement Benefit Plans We offer a noncontributory defined benefit pension plan in which all of our employees are eligible to participate after they have completed one year of service, attained 21 years of age and have met the hourly service requirements. Retirement benefits under our pension plan are based on the number of years of service and level of compensation. Our policy to fund the pension plan on a current basis to not less than the minimum amounts required by the Employee Retirement Income Security Act of 1974, as amended, and the Internal Revenue Code of 1986, as amended, is to assure that plan assets will be adequate to provide retirement benefits. We estimate that we will contribute approximately $10,000 to the pension plan in 2021. In December 2020, the Company made the decision to amend the noncontributory defined benefit pension plan. The Company plans to amend the pension plan by discontinuing the noncontributory defined benefit pension plan and put in place a noncontributory cash balance pension plan effective July 1, 2021. All benefits under the noncontributory defined benefit pension plan will stop accruing on June 30, 2021. We also offer a health and dental benefit plan to all of our eligible employees and retirees that consists of two programs: (1) the self-funded employee health and dental benefit plan and (2) the self-funded (pre-65) and fully-funded (post-65) retiree health and dental benefit plan (the "post-retirement benefit plan"). Effective January 1, 2017, there was a plan amendment, which included the following changes: eliminated the pre-65 retirement plan with a $500 hundred dollar deductible; for retirements after January 1, 2017, the retiree will pay 50 percent of the lower cost supplemental plan if they are 65 or older and 100 percent of the premium if less than 65; and removed spousal coverage after the death of the participant. The financial impact of the changes were reflected in accumulated other comprehensive income at December 31, 2016. Effective January 1, 2019, there was a plan amendment, which requires spouses to pay 100 percent of the medical, dental & vision premiums and the subsidy for the post-65 retirees, which is based off the lowest cost Medicare Supplement Plan (Plan 1). The financial impact of the changes were reflected in accumulated other comprehensive income at December 31, 2019. Subsequent to the completion of the financial statements as of December 31, 2020, the Company made the decision to change the post-retirement benefit plan to a voluntary plan funded exclusively by participants, commencing at the start of 2023. The impact of this decision will be reflected in the financial statements subsequent to December 31, 2020. As of December 31, 2020, the post-retirement benefit obligation was $31,666. This benefit obligation, along with the unrecognized prior service costs, will be released into the Consolidated Statement of Income and Other Comprehensive Income over the next two years. The post-retirement benefit plan provides health and dental benefits to our retirees (and covered dependents) who have met the service and participation requirements stipulated by the post-retirement benefit plan. The third party administrators for the post-retirement benefit plan are responsible for making medical and dental care benefit payments. Participants are required to submit claims for reimbursement or payment to the claims administrator within twelve months after the end of the calendar year in which the charges were incurred. An unfunded benefit obligation is reported for the post-retirement benefit plan in the accompanying Consolidated Balance Sheets. Investment Policies and Strategies Our investment policy and objective for the pension plan is to generate long-term capital growth and income by way of a diversified investment portfolio along with appropriate employer contributions, which will allow us to provide for the pension plan's benefit obligation. The investments held by the pension plan at December 31, 2020 include the following asset categories: • Fixed income securities, which may include bonds, and convertible securities; • Equity securities, which may include various types of stock, such as large-cap, mid-cap, small-cap, and international stocks; • Pooled separate accounts, which includes two separate funds, a core plus bond separate account and a real estate separate account; • An arbitrage fund, which is a fund that takes advantage of price discrepancies, primarily equity securities, for the same asset in different markets; • A group annuity contract that is administered by United Life, a former subsidiary of United Fire; and • Cash and cash equivalents, which include money market funds. We have an internal investment/retirement committee, which includes our Chief Executive Officer, Chief Investment Officer, and Chief Operating Officer, all of whom receive monthly information on the value of the pension plan assets and their performance. Quarterly, the committee meets to review and discuss the performance of the pension plan assets as well as the allocation of investments within the pension plan. As of December 31, 2020, we had six external investment managers that are allowed to exercise investment discretion, subject to limitations, if any, established by the investment/retirement committee. We utilize multiple investment managers in order to maximize the pension plan's investment return while mitigating risk. None of our investment managers uses leverage in managing the pension plan. Annually, the investment/retirement committee meets with each investment manager to review the investment manager's goals, objectives and the performance of the assets they manage. The decision to establish or terminate a relationship with an investment manager is at the discretion of our investment/retirement committee. We consider historical experience for comparable investments and the target allocations we have established for the various asset categories of the pension plan to determine the expected long-term rate of return, which is an assumption as to the average rate of earnings expected on the pension plan funds invested, or to be invested, by the pension plan, to provide for the settlement of benefits included in the projected pension benefit obligation. Investment securities, in general, are exposed to various risks, such as fluctuating interest rates, credit standing of the issuer of the security and overall market volatility. Annually, we perform an analysis of expected long-term rates of return based on the composition and allocation of our pension plan assets and recent economic conditions. The following is a summary of the pension plan's actual and target asset allocations at December 31, 2020 and 2019 by asset category: Target Pension Plan Assets 2020 % of Total 2019 % of Total Allocation Fixed maturity securities - corporate bonds $ 21,718 8.7 % $ 13,250 6.7 % 0 % - 15 % Redeemable preferred stock 3,534 1.4 2,929 1.5 0 % - 10 % Equity securities 149,413 60.0 117,117 58.7 50 % - 70 % Pooled separate accounts Core plus bond separate account fund 26,266 10.6 20,505 10.3 0 % - 40 % U.S. property separate account fund 22,269 9.0 22,114 11.1 0 % - 25 % Arbitrage fund 9,873 4.0 9,245 4.6 0 % - 10 % United Life annuity 11,398 4.6 10,855 5.4 0 % - 10 % Cash and cash equivalents 4,264 1.7 3,451 1.7 0 % - 10 % Total plan assets $ 248,735 100.0 % $ 199,466 100.0 % The investment return expectations for the pension plan are used to develop the asset allocation based on the specific needs of the pension plan. Accordingly, equity securities comprise the largest portion of our pension plan assets, as they yield the highest rate of return. The United Life annuity, which is the fifth largest asset category and was originally written by our former life insurance subsidiary in 1976, provides a guaranteed rate of return. The interest rate on the group annuity contract is determined annually. The availability of assets held in cash and cash equivalents enables the pension plan to mitigate market risk that is associated with other types of investments and allows the pension plan to maintain liquidity both for the purpose of making future benefit payments to participants and their beneficiaries and for future investment opportunities. Valuation of Investments Fixed Maturity and Equity Securities Investments in equity securities are stated at fair value based upon quoted market prices reported on recognized securities exchanges on the last business day of the year. Purchases and sales of securities are recorded as of the trade date. The fair value of fixed maturity securities categorized as Level 2 is determined by management based on fair value information reported in the custodial statements received from Plan’s investment managers, which is derived from recent trading activity of the underlying security in the financial markets. These securities represent various taxable bonds held by the pension plan. These securities categorized as Level 2 are valued in the same manner as described in Note 3 "Fair Value of Financial Instruments" and have the same controls in place. Pooled Separate Accounts The pension plan invests in two pooled separate account funds, a core plus bond separate account fund and a U.S. property separate account fund. Investments in the core plus bond separate account fund are stated at fair value as provided by the administrator of the fund based on the fair value of the underlying assets owned by the fund. The fair value measurement is classified within Level 2 of the fair value hierarchy. The fair value of the investments in the U.S. property separate account fund is provided by the administrator of the fund based on the net asset value of the fund. The net asset value is based on the fair value of the underlying properties included in the fund. The fair value of the underlying properties are based on property appraisals conducted by an independent third party. The fair value measurement is classified within Level 3 of the fair value hierarchy. We have not adjusted the net asset value provided by the custodian for either fund. Arbitrage Fund The fair value of the arbitrage fund is determined based on its net asset value, which is obtained from the custodian and determined monthly with issuances and redemptions of units of the fund made, based on the net asset value per unit as determined on the valuation date. We have not adjusted the net asset value provided by the custodian. United Life Annuity The United Life group annuity contract, which is a deposit administration contract, is stated at contract value as determined by United Life. Under the group annuity contract, the plan's investment account is credited with compound interest on the average account balance for the year. The interest rate is equivalent to the ratio of net investment income to mean assets of United Life, net of investment expenses. Cash and Cash Equivalents Cash and cash equivalents primarily consist of insured cash and money market funds held with various financial institutions. Interest is earned on a daily basis. The fair value of these funds approximates their cost basis due to their short-term nature. Fair Value Measurement The following tables present the categorization of the pension plan's assets measured at fair value on a recurring basis at December 31, 2020 and 2019: Fair Value Measurements Description December 31, 2020 Level 1 Level 2 Level 3 Fixed maturity securities - corporate bonds $ 21,718 $ — $ 21,718 $ — Redeemable preferred stock 3,534 3,534 — — Equity securities 149,413 149,413 — — Pooled separate accounts Core plus bond separate account fund 26,266 — 26,266 — U.S. property separate account fund 22,269 — — 22,269 Arbitrage fund 9,873 — 9,873 — Money market funds 4,260 4,260 — — Total assets measured at fair value $ 237,333 $ 157,207 $ 57,857 $ 22,269 Fair Value Measurements Description December 31, 2019 Level 1 Level 2 Level 3 Fixed maturity securities - corporate bonds $ 13,250 $ — $ 13,250 $ — Redeemable preferred stock 2,929 2,929 — — Equity securities 117,117 117,117 — — Pooled separate accounts Core plus bond separate account fund 20,505 — 20,505 — U.S. property separate account fund 22,114 — — 22,114 Arbitrage fund 9,245 — 9,245 — Money market funds 3,448 3,448 — — Total assets measured at fair value $ 188,608 $ 123,494 $ 43,000 $ 22,114 There were no transfers of assets in or out of Level 1 or Level 2 during the period. The fair value of investments categorized as Level 1 is based on quoted market prices that are readily and regularly available. The fair value of fixed maturity securities categorized as Level 2 is determined by management based on fair value information reported in the custodial statements, which is derived from recent trading activity of the underlying security in the financial markets. These securities represent various taxable bonds held by the pension plan. These securities categorized as Level 2 are valued in the same manner as described in Part II, Item 8, Note 3 "Fair Value of Financial Instruments" and have the same controls in place. The fair value of the arbitrage fund and bond and mortgage pooled separate account fund are categorized as Level 2 since there are no restrictions as to the pension plan's ability to redeem its investment at the net asset value of the fund as of the reporting date. The following tables provide a summary of the changes in fair value of the pension plan's Level 3 securities: U.S. property separate account fund Balance at January 1, 2020 $ 22,114 Unrealized gains 155 Balance at December 31, 2020 $ 22,269 U.S. property separate account fund Balance at January 1, 2019 $ 20,841 Unrealized gains 1,273 Balance at December 31, 2019 $ 22,114 Estimates and Assumptions The preparation of financial statements in conformity with GAAP requires us to make various estimates and assumptions that affect the reporting of net periodic benefit cost, plan assets and plan obligations for each plan at the date of the financial statements. Actual results could differ from these estimates. One significant estimate relates to the calculation of the benefit obligation for each plan. We annually establish the discount rate, which is an estimate of the interest rate at which these benefits could be effectively settled, that is used to determine the present value of the respective plan's benefit obligations as of December 31. In estimating the discount rate, we look to rates of return on high-quality, fixed-income investments currently available and expected to be available during the period to maturity of the respective plan's benefit obligations. The Society of Actuaries ("SOA") is an actuarial organization that periodically reviews mortality data and publishes mortality tables and improvement scales. In October 2019, the SOA released the Pri-2012 mortality tables for private sector retirement plans in the United States. The mortality assumptions are based on the Pri-2012 white collar base rate mortality projected generationally using the Principal Mortality Improvement Scale ("Principal 2016-10"). The Principal 2016-10 scale is based on latest mortality improvement scale, the MP-2020 model issued by the SOA with a few user-selected assumptions: 10- year convergence period on age and cohort and long-term rate assumptions using sex-distinct and age based rated developed from Social Security Trustee Reports. We have reviewed these updated tables and have updated the mortality assumptions based on this information and also based on research provided by our external actuaries. We will continue to monitor mortality assumptions and make changes as appropriate to reflect additional research and our resulting best estimate of future mortality rates. Assumptions Used to Determine Benefit Obligations The following actuarial assumptions were used to determine the reported plan benefit obligations at December 31: Weighted-average assumptions as of Pension Benefits Post-retirement Benefits December 31, 2020 2019 2020 2019 Discount rate 2.58 % 3.32 % 2.58 % 3.32 % Rate of compensation increase 2.75 3.00 N/A N/A Declining interest rates resulted in a decrease in the discount rates we use to value our respective plan's benefit obligations at December 31, 2020 compared to December 31, 2019. Assumptions Used to Determine Net Periodic Benefit Cost The following actuarial assumptions were used at January 1 to determine our reported net periodic benefit costs for the year ended December 31: Weighted-average assumptions as of Pension Benefits Post-retirement Benefits January 1, 2020 2019 2018 2020 2019 2018 Discount rate 3.32 % 4.18 % 3.65 % 3.32 % 4.18 % 3.65 % Expected long-term rate of return on plan assets 6.70 6.70 6.70 N/A N/A N/A Rate of compensation increase 3.00 3.00 3.00 N/A N/A N/A Assumed Health Care Cost Trend Rates Health Care Benefits Dental Claims Years Ended December 31, 2020 2019 2020 2019 Health care cost trend rates assumed for next year 7.00 % 6.75 % 3.00 % 4.00 % Rate to which the health care trend rate is assumed to decline (ultimate trend rate) 4.50 % 4.50 % N/A N/A Year that the rate reaches the ultimate trend rate 2031 2030 N/A N/A Assumed health care cost trend rates have a significant effect on the amounts reported for the post-retirement benefit plan. A 1.0 percent change in assumed health care cost trend rates would have the following effects: 1% Increase 1% Decrease Effect on the net periodic post-retirement health care benefit cost $ 643 $ (494) Effect on the accumulated post-retirement benefit obligation 5,520 (4,451) Benefit Obligation and Funded Status The following table provides a reconciliation of benefit obligations, plan assets and funded status of our plans: Pension Benefits Post-retirement Benefits Years Ended December 31, 2020 2019 2020 2019 Reconciliation of benefit obligation Benefit obligation at beginning of year $ 252,374 $ 202,156 $ 31,001 $ 30,973 Service cost 10,829 7,989 1,728 1,823 Interest cost 8,266 8,320 1,014 1,274 Actuarial loss (gain) 38,920 39,598 (1,084) (1,806) Adjustment for plan amendment (32,175) — — — Benefit payments (6,470) (5,689) (993) (1,263) Benefit obligation at end of year (1) $ 271,744 $ 252,374 $ 31,666 $ 31,001 Reconciliation of fair value of plan assets Fair value of plan assets at beginning of year $ 199,466 $ 164,819 $ — $ — Actual return on plan assets 45,739 36,336 — — Employer contributions 10,000 4,000 993 1,263 Benefit payments (6,470) (5,689) (993) (1,263) Fair value of plan assets at end of year $ 248,735 $ 199,466 $ — $ — Funded status at end of year $ (23,009) $ (52,908) $ (31,666) $ (31,001) (1) For the pension plan, the benefit obligation is the projected benefit obligation. For the post-retirement benefit plan, the benefit obligation is the accumulated post-retirement benefit obligation. Our accumulated pension benefit obligation was $271,515 and $226,196 at December 31, 2020 and 2019, respectively. The following table displays the effect that the unrecognized prior service cost and unrecognized actuarial loss of our plans had on accumulated other comprehensive income ("AOCI"), as reported in the accompanying Consolidated Balance Sheets: Pension Benefits Post-retirement Benefits Years Ended December 31 2020 2019 2020 2019 Amounts recognized in AOCI Unrecognized prior service cost $ (32,175) $ — $ (20,863) $ (28,947) Unrecognized actuarial (gain) loss 66,864 64,059 6,627 8,086 Total amounts recognized in AOCI $ 34,689 $ 64,059 $ (14,236) $ (20,861) We anticipate amortization of the net actuarial losses for our pension plan in 2021 to be $3,995. We anticipate amortization of the net actuarial losses for our post-retirement benefit plan in 2021 to be $260 Net Periodic Benefit Cost The components of the net periodic benefit cost for our pension and post-retirement benefit plans are as follows: Pension Plan Post-retirement Benefit Plan Years Ended December 31, 2020 2019 2018 2020 2019 2018 Net periodic benefit cost Service cost $ 10,829 $ 7,989 $ 8,701 $ 1,728 $ 1,823 $ 2,998 Interest cost 8,266 8,320 7,500 1,014 1,274 2,009 Expected return on plan assets (13,539) (10,784) (10,502) — — — Amortization of prior service cost — — — (8,084) (8,684) (5,409) Amortization of net loss 3,914 3,603 4,287 375 894 2,355 Net periodic benefit cost $ 9,470 $ 9,128 $ 9,986 $ (4,967) $ (4,693) $ 1,953 A portion of the service cost component of net periodic pension and postretirement benefit costs are capitalized and amortized as part of deferred acquisition costs and is included in the income statement line titled "amortization of deferred policy acquisition costs." The portion not related to the compensation and the other components of net periodic pension and postretirement benefit costs are included in the income statement line titled "other underwriting expenses." Projected Benefit Payments The following table summarizes the expected benefits to be paid from our plans over the next 10 years: 2021 2022 2023 2024 2025 2026 - 2030 Pension benefits $ 7,330 $ 7,920 $ 8,860 $ 9,850 $ 10,970 $ 67,280 Post-retirement benefits $ 940 $ 990 $ 1,010 $ 1,050 $ 1,090 $ 6,520 Profit-Sharing Plan We have a profit-sharing plan in which employees who meet service requirements are eligible to participate. The amount of our contribution is discretionary and is determined annually, but cannot exceed the amount deductible for federal income tax purposes. Our contribution to the profit-sharing plan for 2020, 2019 and 2018, was $4,637, $4,096, and $7,607, respectively.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION Non-Qualified Employee Stock Award Plan The United Fire Group, Inc. 2008 Stock Plan (the "2008 Stock Plan") authorized the issuance of restricted and unrestricted stock awards, stock appreciation rights, incentive stock options, and non-qualified stock options for up to 1,900,000 shares of United Fire common stock to employees. In May 2014, the Registrant's shareholders approved an additional 1,500,000 shares of United Fire common stock issuable at any time and from time to time pursuant to the 2008 Stock Plan, among other amendments, and renamed such plan as the United Fire Group, Inc. Stock Plan (as amended, the "Stock Plan"). At December 31, 2020, there were 700,680 authorized shares remaining available for future issuance. The Stock Plan is administered by the Board of Directors, which determines those employees who will receive awards, when awards will be granted, and the terms and conditions of the awards. The Board of Directors may also take any action it deems necessary and appropriate for the administration of the Stock Plan. Pursuant to the Stock Plan, the Board of Directors may, at its sole discretion, grant awards to our employees who are in positions of substantial responsibility with United Fire. Options granted pursuant to the Stock Plan are granted to buy shares of United Fire's common stock at the market value of the stock on the date of grant. Options granted prior to March 2017 vest and are exercisable in installments of 20.0 percent of the number of shares covered by the option award each year from the grant date, unless the Board of Directors authorizes the acceleration of vesting. Options granted after March 2017 vest and are exercisable in installments of 33.3 percent of the number of shares covered by the option award each year from the grant date, unless the Board of Directors authorizes the acceleration of vesting. To the extent not exercised, vested option awards accumulate and are exercisable by the awardee, in whole or in part, in any subsequent year included in the option period, but not later than 10 years from the grant date. Restricted and unrestricted stock awards granted pursuant to the Stock Plan are granted at the market value of our common stock on the date of the grant. Restricted stock awards fully vest after 3 years or 5 years from the date of issuance, unless accelerated upon the approval of the Board of Directors, at which time United Fire common stock will be issued to the awardee. All awards are generally granted free of charge to the eligible employees of United Fire as designated by the Board of Directors. The activity in the Stock Plan is displayed in the following table: Authorized Shares Available for Future Award Grants Year Ended December 31, 2020 From Inception to December 31, 2020 Beginning balance 834,910 1,900,000 Additional shares authorized — 1,500,000 Number of awards granted (172,478) (3,288,899) Number of awards forfeited or expired 38,248 589,579 Ending balance 700,680 700,680 Number of option awards exercised 30,900 1,474,089 Number of unrestricted stock awards granted — 10,090 Number of restricted stock awards vested 63,600 164,378 Non-Qualified Non-Employee Director Stock Option and Restricted Stock Plan The United Fire Group, Inc. Non-Employee Director Stock Plan (formerly known as the 2005 Non-Qualified Non- Employee Director Stock Option and Restricted Stock Plan) (the "Director Stock Plan") authorizes the issuance of restricted stock awards and non-qualified stock options to purchase shares of UFG's common stock to non-employee directors. On May 20, 2020, the Company’s shareholders approved amendments to the Director Stock Plan, previously approved by the Company’s Board of Directors, to (i) increase the number of shares available for future awards under the Director Stock Plan from 300,000 to 450,000, (ii) extend the expiration date of the Director Stock Plan from December 31, 2020 to December 31, 2029, (iii) allow for the grant of awards of restricted stock units, and (iv) rename the Director Stock Plan as the "United Fire Group, Inc. Non-Employee Director Stock Plan." At December 31, 2020, we had 160,135 authorized shares available for future issuance. The Board of Directors has the authority to determine which non-employee directors receive awards, when options and restricted stock shall be granted, the option price, the option expiration date, the date of grant, the vesting schedule of options or whether the options shall be immediately vested, the terms and conditions of options and restricted stock (other than those terms and conditions set forth in the plan) and the number of shares of common stock to be issued pursuant to an option agreement or restricted stock agreement (subject to limits set forth in the plan). The Board of Directors may also take any action it deems necessary and appropriate for the administration of the Director Stock Plan. The activity in the Director Stock Plan is displayed in the following table: Authorized Shares Available for Future Award Grants Year Ended December 31, 2020 From Inception to December 31, 2020 Beginning balance 34,863 300,000 Additional authorization 150,000 150,000 Number of awards granted (24,728) (313,868) Number of awards forfeited or expired — 24,003 Ending balance 160,135 160,135 Number of option awards exercised 14,728 133,820 Number of restricted stock awards vested 14,300 98,491 Stock-Based Compensation Expense In 2020, 2019 and 2018, we recognized stock-based compensation expense of $4,991, $6,152 and $5,249, respectively. Stock-based compensation expense is recognized over the vesting period of the stock options. As of December 31, 2020, we had $4,095 in stock-based compensation expense that has yet to be recognized through our results of operations. We expect this compensation to be recognized in subsequent years according to the following table, except with respect to awards that are accelerated by the Board of Directors, in which case we will recognize any remaining compensation expense in the period in which the awards are accelerated. 2021 $ 2,624 2022 1,107 2023 269 2024 83 2025 12 Total $ 4,095 Analysis of Award Activity The analysis below details the option award activity for 2020 and the awards outstanding at December 31, 2020, for both of our plans and ad hoc options, which were granted prior to the adoption of the other plans: Options Shares Weighted-Average Exercise Price Weighted-Average Remaining Life (in years) Aggregate Intrinsic Value Outstanding at January 1, 2020 829,714 $ 35.39 Granted 110,470 44.08 Exercised (45,628) 21.93 Cancelled/Forfeited (1,300) 29.20 Outstanding at December 31, 2020 893,256 $ 37.16 5.16 $ 179 Exercisable at December 31, 2020 663,788 $ 34.46 4.21 $ 179 Intrinsic value is the difference between our share price on the last day of trading (i.e., December 31, 2020) and the price of the options when granted and represents the value that would have been received by option holders had they exercised their options on that date. These values change based on the fair market value of our shares. The intrinsic value of options exercised totaled $299, $2,055 and $5,850 in 2020, 2019 and 2018, respectively. The analysis below details the award activity for the restricted stock and restricted stock unit awards outstanding at December 31, 2020: Restricted stock awards Shares Weighted-Average Grant Date Fair Value Non-vested at January 1, 2020 246,750 $ 43.31 Granted 101,130 37.87 Vested (77,900) 39.93 Forfeited (52,097) 41.40 Non-vested at December 31, 2020 217,883 $ 42.45 In 2020, 2019 and 2018 we recognized $3,734, $4,659 and $3,877, respectively, in compensation expense related to the restricted stock and restricted stock unit awards. At December 31, 2020, we had $3,074 in compensation expense that has yet to be recognized through our results of operations related to the restricted stock and restricted stock unit awards. The intrinsic value of the non-vested restricted stock and restricted stock unit awards outstanding totale d $5,469 and $10,165 at December 31, 2020 and 2019, respectively. Assumptions The weighted-average grant-date fair value of the options granted under our plans has been estimated using the Black-Scholes option pricing model with the following weighted-average assumptions: December 31, 2020 2019 2018 Risk-free interest rate 1.4 % 2.57 % 2.79 % Expected volatility 22.26 % 26.40 % 21.79 % Expected option life (in years) 7 7 7 Expected dividends (in dollars) $ 1.32 $ 1.24 $ 1.12 Weighted-average grant-date fair value of options granted during the year (in dollars) $ 6.96 $ 12.97 $ 8.90 The following table summarizes information regarding the stock options outstanding and exercisable at December 31, 2020: Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding (in shares) Weighted-Average Remaining Contractual Life (in years) Weighted-Average Exercise Price Number Exercisable (in shares) Weighted-Average Exercise Price $ 20.40 - 29.02 92,415 2.14 $ 23.81 87,070 $ 23.63 29.03 - 29.37 182,462 3.93 29.12 182,462 29.12 29.38 - 40.61 239,097 4.04 35.47 210,663 34.87 40.62 - 44.88 210,260 6.08 42.87 158,190 42.86 44.89 - 54.26 169,022 8.56 48.44 25,403 54.11 $ 20.40 - 54.26 893,256 5.16 $ 37.16 663,788 $ 34.46

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION On September 19, 2017, the Company announced that it had agreed to sell its subsidiary, United Life, to Kuvare. The sale closed on March 30, 2018. As a result, our life insurance business was considered held for sale and reported as discontinued operations in the Consolidated Financial Statements and all comparable prior periods have been presented to conform to the current year presentation. For more information, refer to Note 17 "Discontinued Operations." Prior to the announcement to sell United Life, we had two reportable business segments in our operations: property and casualty insurance and life insurance. The property and casualty insurance business has six domestic locations from which it conducts its business. The life insurance business operated from our home office. Because all of our insurance is sold domestically, we have no revenues allocable to foreign operations. After the announcement of the sale of United Life, our continuing operations, the property and casualty insurance business, is reported as one reportable segment. The property and casualty insurance business profit or loss is consistent with consolidated reporting as disclosed on the Consolidated Statements of Income and Comprehensive Income. We analyze the property and casualty insurance business results based on profitability (i.e., loss ratios), expenses and return on equity. The Company's property and casualty insurance business was determined using a management approach to make decisions on operating matters, including allocating resources, assessing performance, determining which products to market and sell, determining distribution networks with insurance agents and monitoring the regulatory environment. The property and casualty insurance business products have similar economic characteristics and use a similar marketing and distribution strategy with our independent agents. The property and casualty insurance business geographic concentration did not change after the announcement of the sale of the life insurance business. We will continue to evaluate our continuing operations on the basis of both statutory accounting principles prescribed or permitted by our states of domicile and GAAP. The accounting policies of our businesses are the same as those described in Note 1 "Summary of Significant Accounting Policies" to our Consolidated Financial Statements. We analyze results based on profitability (i.e., loss ratios), expenses and return on equity. Property and Casualty Insurance Business We write both commercial and personal lines of property and casualty insurance. We focus on our commercial lines, which represented 94.2 percent of our property and casualty insurance premiums earned for 2020. Our personal lines represented 5.8 percent of our property and casualty insurance premiums earned for 2020. Commercial Lines Business Our primary commercial policies are tailored business packages that include the following coverages: fire and allied lines, other liability, automobile, workers' compensation and surety. Personal Lines Business Our personal lines consist primarily of automobile and fire and allied lines coverage, including homeowners. In May 2020, the Company entered into a renewal rights agreement for our personal lines business, providing our independent insurance agents with the opportunity to transfer their personal lines policies to Nationwide Mutual Insurance Company beginning in the third quarter of 2020, subject to the receipt of applicable regulatory approvals. As part of this agreement, Nationwide will offer contracts to all of our personal lines agents across the country, with the exception of agents in Louisiana and Florida. We are continuing to evaluate our strategic plan for the personal lines business in Louisiana and Florida. Pricing Pricing levels for our property and casualty insurance products are influenced by many factors, including an estimation of expected losses, the expenses of producing, issuing and servicing business and managing claims, the time value of money associated with such loss and expense cash flows, and a reasonable allowance for profit. We have a disciplined approach to underwriting and risk management that emphasizes profitable growth rather than premium volume or market share. Our insurance company subsidiaries are subject to state laws and regulations regarding rate and policy form approvals. The applicable state laws and regulations establish standards in certain lines of business to ensure that rates are not excessive, inadequate, unfairly discriminatory, or used to engage in unfair price competition. Our ability to increase rates and the relative timing of the process are dependent upon each respective state's requirements, as well as the competitive market environment. Seasonality Our property and casualty insurance business experiences some seasonality with regard to premiums written, which are generally highest in January and July and lowest during the fourth quarter. Although we experience some seasonality in our premiums written, premiums are earned ratably over the period of coverage. Losses and loss settlement expenses incurred tend to remain consistent throughout the year, with the exception of catastrophe losses which generally are highest in the second and third quarters. Catastrophes inherently are unpredictable and can occur at any time during the year from man-made or natural disaster events that include, but are not limited to, hail, tornadoes, hurricanes and windstorms. Premiums Earned The following table sets forth our net premiums earned: Years Ended December 31, 2020 2019 2018 Continuing Operations - Property and casualty insurance business Net premiums earned Other liability $ 316,098 $ 318,412 $ 311,931 Fire and allied lines 277,515 285,205 276,193 Automobile 324,420 345,637 313,521 Workers' compensation 75,953 87,376 95,203 Fidelity and surety 28,001 25,539 24,437 Reinsurance assumed 30,417 21,861 13,228 Other 2,678 2,942 2,938 Total net premiums earned from continuing operations $ 1,055,082 $ 1,086,972 $ 1,037,451 Discontinued Operations - Life insurance business Net premiums earned Ordinary life (excluding universal life) $ — $ — $ 7,068 Universal life policy fees — — 3,363 Immediate annuities with life contingencies — — 2,515 Accident and health — — 45 Other — — 12 Total net premiums earned from discontinued operations $ — $ — $ 13,003

QUARTERLY SUPPLEMENTARY FINANCI

QUARTERLY SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Data [Abstract]
QUARTERLY SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED)	QUARTERLY SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) The following table sets forth our selected unaudited quarterly financial information: (In Thousands Except Share Data) Quarters First Second Third Fourth Total Year Ended December 31, 2020 Total revenues $ 177,805 $ 297,803 $ 282,121 $ 310,898 $ 1,068,627 Income (loss) before income taxes (104,999) 4,236 (55,228) (13,524) (169,515) Net income (loss) $ (72,534) $ 5,960 $ (37,241) $ (8,891) $ (112,706) Basic earnings (loss) per share (1) $ (2.90) $ 0.24 $ (1.49) $ (0.36) $ (4.50) Diluted earnings (loss) per share (1) (2.90) 0.24 (1.49) (0.36) (4.50) Year Ended December 31, 2019 Total revenues $ 305,539 $ 304,197 $ 298,055 $ 293,374 $ 1,201,165 Income (loss) before income taxes 54,677 (4,571) (4,528) (28,699) 16,879 Net income (loss) $ 44,521 $ (4,196) $ (2,342) $ (23,163) $ 14,820 Basic earnings (loss) per share (1) $ 1.77 $ (0.17) $ (0.09) $ (0.93) $ 0.59 Diluted earnings (loss) per share (1) 1.74 (0.17) (0.09) (0.93) 0.58 (1) The sum of the quarterly reported amounts may not equal the full year, as each is computed independently.

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
EARNINGS PER COMMON SHARE	EARNINGS PER COMMON SHARE Basic earnings per share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted earnings per share gives effect to all dilutive common shares outstanding during the reporting period. The dilutive shares we consider in our diluted earnings per share calculation relate to our outstanding stock options and restricted stock awards. We determine the dilutive effect of our outstanding stock options using the "treasury stock" method. Under this method, we assume the exercise of all of the outstanding stock options whose exercise price is less than the weighted-average market value of our common stock during the reporting period. This method also assumes that the proceeds from the hypothetical stock option exercises are used to repurchase shares of our common stock at the weighted-average market value of the stock during the reporting period. The net of the assumed stock options exercised and assumed common shares repurchased represents the number of dilutive common shares, which we add to the denominator of the earnings per share calculation. The components of basic and diluted earnings per share were as follows: Years Ended December 31, 2020 2019 2018 (In Thousands Except Share and Per Share Data) Basic Diluted Basic Diluted Basic Diluted Net income (loss) from continuing operations $ (112,706) $ (112,706) $ 14,820 $ 14,820 $ 2,255 $ 2,255 Weighted-average common shares outstanding 25,027,358 25,027,358 25,138,039 25,138,039 25,006,211 25,006,211 Add dilutive effect of restricted stock awards — — — 232,450 — 273,544 Add dilutive effect of stock options — — — 212,038 — 343,057 Weighted-average common shares 25,027,358 25,027,358 25,138,039 25,582,527 25,006,211 25,622,812 Earnings (loss) per common share from continuing operations $ (4.50) $ (4.50) $ 0.59 $ 0.58 $ 0.09 $ 0.09 Earnings (loss) per common share from discontinued operations — — — — (0.08) (0.07) Gain on sale of discontinued operations, net of taxes $ — $ — $ — $ — $ 1.10 $ 1.07 Earnings (loss) per common share $ (4.50) $ (4.50) $ 0.59 $ 0.58 $ 1.11 $ 1.08 Awards excluded from diluted calculation (1) — 618,379 — 63,897 — 2,681 (1) Outstanding awards that are not "in-the-money" are excluded from the diluted earnings per share calculation because the effect of including them would have been anti-dilutive.

LEASE COMMITMENTS

LEASE COMMITMENTS	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
LEASE COMMITMENTS	LEASE COMMITMENTS The Company determines if a contract contains a lease at inception of the contract by reviewing the facts and circumstances of the contract to determine if a lease is present. The Company has operating leases relating to office space, vehicles, computer equipment, and office equipment, which are recorded as a lease obligation liability disclosed in the "Accrued expenses and other liabilities" line on the Consolidated Balance Sheets and as a lease right-of-use asset disclosed in the "Other assets" line on the Consolidated Balance Sheets. The lease right-of-use asset represents the Company's right to use each underlying asset for the lease term and the lease obligation liability represents the Company's obligation over the lease term. As an accounting policy election, we have elected the practical expedient on not separating lease components from non-lease components to each major asset class. The Company's lease obligation is recorded at the present value of the lease payments based on the term of the applied lease. The Company has elected to categorize its leases into four categories based on length of lease terms and applies an incremental borrowing rate of interest as of the effective date of adoption or the lease effective date equivalent to a collateralized rate with similar terms. The four categories are as follows: less than three years, three to five years, five to ten years and greater than ten years. The collateralized discount rate used to calculate the present value of future minimum lease payments is based, where appropriate, on the Company's incremental borrowing rate of its credit facility, described in Note 14 "Debt". For leases that existed prior to the adoption of the new accounting guidance on January 1, 2019 or those with terms not similar to the credit facility, the Company has elected to use the remaining lease term based on the four categories noted above as of the date of initial application to measure its incremental borrowing rate. In this case, the incremental borrowing rate is a collateralized rate based on current industry borrowing rates for similar companies with similar ratings. Lease terms and options vary in the Company's operating leases dependent upon the underlying leased asset. We exclude options to extend or terminate a lease from our recognition as part of our right-of-use assets and lease liabilities until those options are known and/or executed, as we typically do not exercise options to purchase the underlying leased asset. As of December 31, 2020, we have leases with remaining terms of 1 year to 6 years, some of which may include no options for renewal and others with options to extend the lease terms from 6 months to 5 years. The components of our operating leases were as follows: As of December 31, 2020 As of December 31, 2019 Components of lease expense: Operating lease expense $ 7,611 $ 7,655 Less sublease income 292 493 Net lease expense 7,319 7,162 Cash flows information related to leases: Operating cash outflow from operating leases 7,053 7,249 Balance sheet information for operating leases: As of December 31, 2020 As of December 31, 2019 Operating lease right-of-use assets (Other assets on Consolidated Balance Sheets) $ 18,619 $ 15,410 Operating lease liabilities (Accrued expenses and other liabilities on Consolidated Balance Sheets) 19,244 15,851 Right-of-use assets obtained in exchange for new operating lease liabilities 7,264 651 Weighted average remaining lease term 4.36 years 2.75 years Weighted average discount rate 3.72 % 4.74 % Maturities of lease liabilities: As of December 31, 2020 As of December 31, 2019 2021 $ 6,889 $ 7,517 2022 4,610 5,311 2023 3,627 2,417 2024 1,763 1,318 2025 1,270 259 Thereafter 2,460 39 Total lease payments 20,619 16,861 Less imputed interest (1,375) (1,010) Lease liability $ 19,244 $ 15,851

DEBT

DEBT	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
DEBT	DEBT Long Term Debt The Company executed a private placement debt transaction on December 15, 2020 between UF&C, and Federated Mutual and Federated Life. UFG sold an aggregate $50,000 of notes due 2040 to the Note Purchasers. One note with a principal amount of $35,000 was issued to Federated Mutual and one note with a principal amount of $15,000 was issued to Federated Life subject to the terms of their respective notes. The Company incurred $24 in debt issuance costs associated with this debt transaction in 2020. Interest payments under the surplus notes will be paid quarterly on March 15, June 15, September 15 and December 15 of each year (each such date, an "Interest Payment Date"). The interest rate will equal the rate that corresponds to the A.M. Best Co. (or its successor’s) financial strength rating for members of the United Fire & Casualty Pooled Group as of the applicable Interest Payment Date, as set forth in the table below. As of December 31, 2020, interest expense totaled $133. Payment of interest is subject to approval by the Iowa Insurance Division. A.M. Best Co. Financial Strength Rating Applicable Interest Rate A+ 5.875% A 6.375% A- 6.875% B++ (or lower) 7.375% Credit Facilities On March 31, 2020, UF&C a wholly owned subsidiary of the Company, entered into a credit agreement (the "Credit Agreement") with Wells Fargo Bank, National Association ("Wells Fargo"), as administrative agent (the "Administrative Agent"), issuing lender, swing-line lender and lender, and the other lenders from time to time party thereto (collectively with Wells Fargo, the "Lenders"), providing for a $50,000 revolving credit facility, which includes a $20,000 letter of credit sub-facility and a $5,000 swing-line loan for working capital and other general corporate purposes. The Credit Agreement is provided by the Lenders on an unsecured basis, and the UF&C has the option to increase the Credit Agreement by $100,000 if agreed to by the Lenders providing such incremental facility. The Credit Agreement includes customary events of default, including default in payments of principals, default in payment of other indebtedness, change of control and voluntary and involuntary insolvency proceedings, the occurrence of which would allow the Lenders to accelerate payment of all amounts outstanding thereunder and terminate any further commitments to lend. The entry into the Credit Agreement was completed as part of the Company’s regular course of financial planning and was not initiated as a result of market conditions resulting from the COVID-19 pandemic. Prior to February 2, 2020, the Company had a credit agreement (the "Previous Credit Agreement") which it entered into on February 2, 2016. The Company, as borrower, entered into the Previous Credit Agreement with the lenders from time to time party thereto and KeyBank National Association ("Key Bank"), as administrative agent, swingline lender and letter of credit issuer. The Previous Credit Agreement provided for a $50,000 four There was no outstanding balance on either the Credit Agreement or the Previous Credit Agreement at December 31, 2020 or 2019, respectively. As of December 31, 2020, we were in compliance with two of three financial covenants of the Credit Agreement. We have received a waiver from the Lenders on the third financial covenant. We have the ability to draw on our credit facility if needed. We did not incur any interest expense related to the Credit Agreement in 2020 or under our Previous Credit Agreement in 2019 and 2018.

INTANGIBLE ASSETS

INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
INTANGIBLE ASSETS	INTANGIBLE ASSETS The carrying value of our goodwill was zero at December 31, 2020 and $15,091 at December 31, 2019, respectively. During the third quarter of 2020, we completed our annual quantitative analysis of goodwill. As a result of the quantitative analysis, we impaired the remaining balance of our goodwill of $15,091 as of September 30, 2020 based on the following factors: (i) disruptions in the equity markets, specifically for property and casualty insurance companies, as a result of the COVID-19 pandemic and due to recent weather related catastrophes; (ii) recent elevated commercial auto loss ratios; and (iii) the fair value of our stock trading significantly below book value. The Company used a weighting of the income and market approaches to determine the fair value of the reporting unit. Our major classes of intangible assets are presented in the following table: Year Ended December 31, 2020 2019 Agency relationships $ 10,338 $ 10,338 Accumulated amortization - agency relationships (7,307) (6,731) $ 3,031 $ 3,607 Software $ 3,260 $ 3,260 Accumulated amortization - software (3,260) (3,260) $ — $ — Trade names $ 1,978 $ 1,978 Accumulated amortization - trade names (1,286) (1,154) $ 692 $ 824 Favorable contract $ 286 $ 286 Accumulated amortization - favorable contract (286) (286) $ — $ — State insurance licenses (1) $ 3,020 $ 3,020 Net intangible assets $ 6,743 $ 7,451 (1) The intangible asset for licenses has an indefinite life and therefore is not amortized. The estimated useful lives assigned to our major classes of amortizable intangible assets are as follows: Useful Life Agency relationships Fifteen years Software Two years Trade names Fifteen years Favorable contract Two years Our estimated aggregate amortization expense for each of the next five years is as follows: 2021 $ 709 2022 709 2023 709 2024 709 2025 709

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME	ACCUMULATED OTHER COMPREHENSIVE INCOME The following table shows the changes in the components of our accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2020, 2019 and 2018: Liability for Net unrealized underfunded appreciation employee on investments benefit costs Total Balance as of January 1, 2018 $ 214,865 $ (46,551) $ 168,314 Cumulative effect of change in accounting principle (191,244) — (191,244) Change in accumulated other comprehensive income before reclassifications (33,564) 20,155 (13,409) Reclassification adjustments from accumulated other comprehensive income 620 5,247 5,867 Balance as of December 31, 2018 $ (9,323) $ (21,149) $ (30,472) Change in accumulated other comprehensive income before reclassifications 55,399 (16,530) 38,869 Reclassification adjustments from accumulated other comprehensive income 1,203 3,552 4,755 Balance as of December 31, 2019 $ 47,279 $ (34,127) $ 13,152 Change in accumulated other comprehensive income before reclassifications 37,173 14,580 51,753 Reclassification adjustments from accumulated other comprehensive income (1,382) 3,388 2,006 Balance as of December 31, 2020 $ 83,070 $ (16,159) $ 66,911

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	12 Months Ended
	Dec. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS On September 18, 2017, we signed a definitive agreement to sell our subsidiary, United Life Insurance Company, to Kuvare for $280,000 in cash, less a $21 adjustment as set forth in the definitive agreement, for a net amount of $279,979. The sale closed on March 30, 2018 and we reported an after-tax gain on the sale of discontinued operations of $27,307. The life insurance business (previously reported as a separate segment) was considered held for sale and reported as discontinued operations and its financial position, results of operations and cash flows were reported separately for all periods presented, as applicable, unless otherwise noted. UFG agreed to provide services to Kuvare through a transition services agreement ("TSA"). The TSA included, among other considerations, accounting management, human resources, legal and information technology services, from the closing date for up to 24 months. The TSA ended as scheduled on March 30, 2020. The Company received a total of $1,019 as p art of the TSA. Summary operating results of discontinued operations were as follows for the periods indicated: Discontinued Operations Statements of Income For the Years Ended December 31, (In Thousands, Except Share Data) 2020 2019 2018 Revenues Net premiums earned $ — $ — $ 13,003 Investment income, net of investment expenses — — 12,663 Total net realized investment gains (losses) — — (1,057) Other income — — 146 Total revenues $ — $ — $ 24,755 Benefits, Losses and Expenses Losses and loss settlement expenses $ — $ — $ 10,823 Increase in liability for future policy benefits — — 5,023 Amortization of deferred policy acquisition costs — — 1,895 Other underwriting expenses — — 3,864 Interest on policyholders’ accounts — — 4,499 Total benefits, losses and expenses $ — $ — $ 26,104 Income (loss) from discontinued operations before income taxes $ — $ — $ (1,349) Federal income tax expense — — 563 Net income (loss) from discontinued operations $ — $ — $ (1,912) Earnings (loss) per common share from discontinued operations: Basic $ — $ — $ (0.08) Diluted — — (0.07)

Schedule I. Summary of Investme

Schedule I. Summary of Investments - Other than Investments in Related Parties	12 Months Ended
	Dec. 31, 2020
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Abstract]
Schedule I. Summary of Investments - Other than Investments in Related Parties	Schedule I. Summary of Investments — Other than Investments in Related Parties December 31, 2020 (In thousands) Cost or Amortized Cost Amounts at Which Shown in Balance Sheet Type of Investment Fair Value Fixed maturities Bonds United States Government and government agencies and authorities $ 209,983 $ 214,456 $ 214,456 States, municipalities and political subdivisions 824,545 884,700 884,700 Foreign governments 27,799 29,602 29,602 Public utilities 76,114 83,502 83,502 All other bonds 581,850 613,183 613,178 Redeemable preferred stock — — — Total fixed maturities $ 1,720,291 $ 1,825,443 $ 1,825,438 Equity securities Common stocks Public utilities $ 3,760 $ 16,320 $ 16,320 Banks, trusts and insurance companies 7,853 69,577 69,577 Industrial, miscellaneous and all other 36,877 120,193 120,193 Nonredeemable preferred stocks 595 595 595 Total equity securities $ 49,085 $ 206,685 $ 206,685 Mortgage loans on real estate $ 47,690 $ 48,932 $ 47,614 Other long-term investments 73,820 69,305 69,305 Short-term investments 175 175 175 Total investments $ 1,891,061 $ 2,150,540 $ 2,149,217

Schedule II. Condensed Financia

Schedule II. Condensed Financial Statements of Parent Company	12 Months Ended
	Dec. 31, 2020
Condensed Financial Information Disclosure [Abstract]
Schedule II. Condensed Financial Statements of Parent Company	Schedule II. Condensed Financial Statements of Parent Company United Fire Group, Inc. (parent company only) Condensed Balance Sheets December 31, (In thousands, except share data) 2020 2019 Assets Fixed maturities Available-for-sale, at fair value (amortized cost $150 in 2020 and $150 in 2019) $ 150 $ 150 Investment in subsidiary 818,581 880,485 Cash and cash equivalents 6,504 29,878 Other assets 15 3 Total assets $ 825,250 $ 910,516 Liabilities and stockholders' equity Liabilities $ 101 $ 44 Stockholders' equity Common stock, $0.001 par value, authorized 75,000,000 shares 25,055,479 and 25,015,963 issued and outstanding in 2020 and 2019, respectively $ 25 $ 25 Additional paid-in capital 202,359 200,179 Retained earnings 555,854 697,116 Accumulated other comprehensive income, net of tax 66,911 13,152 Total stockholders' equity $ 825,149 $ 910,472 Total liabilities and stockholders' equity $ 825,250 $ 910,516 This condensed financial information should be read in conjunction with the Consolidated Financial Statements and Notes included in Part II, Item 8 of this Annual Report on Form 10-K. Schedule II. Condensed Financial Statements of Parent Company (continued) United Fire Group, Inc. (parent company only) Condensed Statements of Income and Comprehensive Income For the Years Ended December 31, (In thousands) 2020 2019 2018 Revenues Investment income $ 141 $ 295 $ 396 Total revenues 141 295 396 Expenses Other operating expenses $ 10 $ 86 $ 95 Total expenses 10 86 95 Income before income taxes and equity in net income of subsidiary 131 209 301 Federal income tax expense (benefit) 68 44 (1,165) Net income before equity in net income (loss) of subsidiary $ 63 $ 165 $ 1,466 Equity in net income (loss) of subsidiary (112,769) 14,655 26,184 Net income (loss) $ (112,706) $ 14,820 $ 27,650 Other comprehensive income (loss) Change in unrealized appreciation on investments held by subsidiary $ 47,054 $ 70,127 $ (50,985) Change in liability for underfunded employee benefit plans of subsidiary 18,456 (20,924) 25,513 Other comprehensive income (loss), before tax and reclassification adjustments $ 65,510 $ 49,203 $ (25,472) Income tax effect (13,757) (10,334) 5,349 Other comprehensive income (loss), after tax, before reclassification adjustments $ 51,753 $ 38,869 $ (20,123) Reclassification adjustment for net realized gains of the subsidiary included in income (1,750) 1,521 784 Reclassification adjustment for employee benefit costs of the subsidiary included in expense 4,289 4,497 6,642 Total reclassification adjustments, before tax $ 2,539 $ 6,018 $ 7,426 Income tax effect (534) (1,263) (1,559) Total reclassification adjustments, after tax $ 2,005 $ 4,755 $ 5,867 Comprehensive income (loss) $ (58,948) $ 58,444 $ 13,394 United Fire Group, Inc. and its subsidiaries file a consolidated federal income tax return. The federal income tax provision represents an allocation under its tax allocation agreements. This condensed financial information should be read in conjunction with the Consolidated Financial Statements and Notes included in Part II, Item 8 of this Annual Report on Form 10-K. Schedule II. Condensed Financial Statements of Parent Company (continued) United Fire Group, Inc. (parent company only) Condensed Statements of Cash Flows For the Years Ended December 31, (In thousands) 2020 2019 2018 Cash flows from operating activities Net income (loss) $ (112,706) $ 14,820 $ 27,650 Adjustments to reconcile net income to net cash provided by operating activities Equity in net income of subsidiary 112,769 (14,655) (26,184) Dividends received from subsidiary 4,000 57,000 105,000 Other, net 3,907 5,512 1,824 Total adjustments $ 120,676 $ 47,857 $ 80,640 Net cash provided by operating activities $ 7,970 $ 62,677 $ 108,290 Cash flows from investing activities Net cash used in investing activities $ — $ — $ — Cash flows from financing activities Payment of cash dividends $ (28,532) $ (32,662) $ (105,408) Repurchase of common stock (2,741) (11,700) (5,404) Issuance of common stock (71) 2,377 7,171 Net cash used in financing activities $ (31,344) $ (41,985) $ (103,641) Net change in cash and cash equivalents $ (23,374) $ 20,692 $ 4,649 Cash and cash equivalents at beginning of period 29,878 9,186 4,537 Cash and cash equivalents at end of year $ 6,504 $ 29,878 $ 9,186 This condensed financial information should be read in conjunction with the Consolidated Financial Statements and Notes included in Part II, Item 8 of this Form 10-K.

Schedule III. Supplementary Ins

Schedule III. Supplementary Insurance Information	12 Months Ended
	Dec. 31, 2020
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract]
Schedule III. Supplementary Insurance Information	Schedule III. Supplementary Insurance Information (In thousands) Deferred Policy Acquisition Costs Future Policy Benefits, Losses, Claims and Loss Expenses Unearned Premiums Earned Premium Revenue Investment Income, Net Benefits, Claims, Losses and Settlement Expenses Amortization of Deferred Policy Acquisition Costs Other Underwriting Expenses Interest on Policyholders' Accounts Premiums Written (2) Year Ended December 31, 2020 Continuing Operations $ 87,094 $ 1,578,131 $ 464,845 $ 1,055,082 $ 39,670 $ 869,467 $ 210,252 $ 143,332 $ — $ 1,011,350 Discontinued Operations (1) — — — — — — — — — — Total $ 87,094 $ 1,578,131 $ 464,845 $ 1,055,082 $ 39,670 $ 869,467 $ 210,252 $ 143,332 $ — $ 1,011,350 Year Ended December 31, 2019 Continuing Operations $ 94,292 $ 1,421,754 $ 505,162 $ 1,086,972 $ 60,414 $ 830,172 $ 216,199 $ 137,415 $ — $ 1,096,730 Discontinued Operations (1) — — — — — — — — — — Total $ 94,292 $ 1,421,754 $ 505,162 $ 1,086,972 $ 60,414 $ 830,172 $ 216,199 $ 137,415 $ — $ 1,096,730 Year Ended December 31, 2018 Continuing Operations $ 92,796 $ 1,312,483 $ 492,918 $ 1,037,451 $ 52,894 $ 731,611 $ 206,232 $ 141,473 $ — $ 1,061,664 Discontinued Operations (1) — — — 13,003 12,663 15,846 1,895 3,864 4,499 — Total $ 92,796 $ 1,312,483 $ 492,918 $ 1,050,454 $ 65,557 $ 747,457 $ 208,127 $ 145,337 $ 4,499 $ 1,061,664 (1) Annuity deposits are included in future policy benefits, losses, claims and loss expenses.

Schedule IV. Reinsurance

Schedule IV. Reinsurance	12 Months Ended
	Dec. 31, 2020
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract]
Schedule IV. Reinsurance	Schedule IV. Reinsurance (In thousands) Gross Amount Ceded to Other Companies Assumed From Other Companies Net Amount Percentage of Amount Assumed to Net Earned Year Ended December 31, 2020 Premiums earned Property and casualty insurance $ 1,106,327 $ 84,924 $ 33,679 $ 1,055,082 3.19 % Year Ended December 31, 2019 Premiums earned Property and casualty insurance $ 1,133,583 $ 72,023 $ 25,412 $ 1,086,972 2.34 % Year Ended December 31, 2018 Premiums earned Property and casualty insurance $ 1,083,981 $ 63,487 $ 16,957 $ 1,037,451 1.63 %

Schedule V. Valuation and Quali

Schedule V. Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule V. Valuation and Qualifying Accounts	Schedule V. Valuation And Qualifying Accounts (In thousands) Balance at beginning of period Charged to costs and expenses Deductions Balance at end of period Description Allowance for bad debts Year Ended December 31, 2020 $ 1,239 $ — $ 552 $ 687 Year Ended December 31, 2019 785 454 — 1,239 Year Ended December 31, 2018 1,255 — 470 785 Deferred tax asset valuation allowance (1) Year Ended December 31, 2020 $ — $ — $ — $ — Year Ended December 31, 2019 — — — — Year Ended December 31, 2018 329 — 329 — (1) Recorded in connection with the purchase of American Indemnity Financial Corporation in 1999.

Schedule_VI. Supplemental Infor

Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations	12 Months Ended
	Dec. 31, 2020
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]
Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations	Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations (In thousands) Affiliation with Registrant: United Fire & Casualty Company and consolidated property and casualty subsidiaries Claims and Claim Adjustment Expenses Incurred Related to: Amortization of Deferred Policy Acquisition Costs Reserves for Unpaid Claims and Claim Adjustment Expenses Net Realized Investment Gains (Losses) Deferred Policy Acquisition Costs Net Investment Income Paid Claims and Claim Adjustment Expenses Unearned Premiums Earned Premiums Current Year Prior Years Premiums Written 2020 $ 87,094 $ 1,578,131 $ 464,845 $ 1,055,082 $ (32,395) $ 39,670 $ 887,119 $ (17,652) $ 210,252 $ 776,397 $ 1,011,350 2019 $ 94,292 $ 1,421,754 $ 505,162 $ 1,086,972 $ 53,779 $ 60,414 $ 835,507 $ (5,335) $ 216,699 $ 732,343 $ 1,096,730 2018 $ 92,796 $ 1,312,483 $ 492,928 $ 1,037,451 $ (20,179) $ 52,894 $ 785,778 $ (54,167) $ 206,232 $ 640,534 $ 1,061,664

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Discontinued Operations	On September 18, 2017, the Company signed a definitive agreement to sell its subsidiary, United Life Insurance Company ("United Life"), to Kuvare US Holdings, Inc. ("Kuvare") and on March 30, 2018, the sale closed. As a result, our life insurance business, previously a separate segment, has been reported as discontinued operations in the Consolidated Statements of Income and Comprehensive Income and Consolidated Statements of Cash Flows for the twelve month period ended December 31, 2018 in this Form 10-K. Subsequent to the announcement of this sale, our continuing operations were reported as one business segment. All current and prior periods reflected in this Form 10-K have been presented as continuing and discontinued operations, unless otherwise noted.
Principles of Consolidation	The accompanying Consolidated Financial Statements include United Fire and its wholly owned subsidiaries: United Fire & Casualty Company, United Real Estate Holdings, LLC, Addison Insurance Company, Lafayette Insurance Company, United Fire & Indemnity Company, United Fire Lloyds, UFG Specialty Insurance Company, Financial Pacific Insurance Company, Franklin Insurance Company, Mercer Insurance Company, Mercer Insurance Company of New Jersey, Inc, McIntyre Cedar UK Limited. Mercer Insurance Company and McIntyre Cedar Corporate Member LLP. United Fire Lloyds, an affiliate of United Fire & Indemnity Company, is organized as a Texas Lloyds plan, which is an aggregation of underwriters who, under a common name, engage in the business of insurance through a corporate attorney-in-fact. United Fire Lloyds is financially and operationally controlled by United Fire & Indemnity Company, its corporate attorney-in-fact, pursuant to three types of agreements: trust agreements between United Fire & Indemnity Company and certain individuals who agree to serve as trustees; articles of agreement among the trustees who agree to act as underwriters to establish how the Lloyds plan will be operated; and powers of attorney from each of the underwriters appointing a corporate attorney-in-fact, who is authorized to operate the Lloyds plan. Because United Fire & Indemnity Company can name the trustees, the Lloyds plan is perpetual, subject only to United Fire & Indemnity Company's desire to terminate it. United Fire & Indemnity Company provides all of the statutory capital necessary for the formation of the Lloyds plan by contributing capital to each of the trustees. The trust agreements require the trustees to become underwriters of the Lloyds plan, to contribute the capital to the Lloyds plan, to sign the articles of agreement and to appoint the attorney-in-fact. The trust agreements also require the trustees to pay to United Fire & Indemnity Company all of the profits and benefits received by the trustees as underwriters of the Lloyds plan, which means that United Fire & Indemnity Company has the right to receive 100 percent of the gains and profits from the Lloyds plan. The trustees serve at the pleasure of United Fire & Indemnity Company, which may remove a trustee and replace that trustee at any time. Termination of a trustee must be accompanied by the resignation of the trustee as an underwriter, so that the trustee can obtain the capital contribution from the Lloyds plan to reimburse United Fire & Indemnity Company. By retaining the ability to terminate trustees, United Fire & Indemnity Company possesses the ability to name and remove the underwriters.
Basis of Presentation	The accompanying Consolidated Financial Statements have been prepared on the basis of U.S. generally accepted accounting principles ("GAAP"), which differ in some respects from those followed in preparing our statutory reports to insurance regulatory authorities. Our stand-alone subsidiary financial statements submitted to insurance regulatory authorities are presented on the basis of accounting practices prescribed or permitted by the insurance departments of the states in which we are domiciled ("statutory accounting principles").
Use of Estimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The financial statement categories that are most dependent on management estimates and assumptions include: investments; deferred policy acquisition costs; reinsurance receivables and recoverables; goodwill impairment; losses and loss settlement expenses; and pension and post-retirement benefit obligations.
Property and Casualty Insurance Business and Life Insurance Business	Premiums written are deferred and recorded as earned premium on a daily pro rata basis over the terms of the respective policies. Unearned premium reserves are established for the portion of premiums written applicable to the unexpired term of insurance policies in force.Our whole life and term insurance (i.e., traditional business) premiums are reported as earned when due and benefits and expenses are associated with premium income in order to result in the recognition of profits over the lives of the related contracts.
Premiums Receivable	Premiums receivable are presented net of an estimated allowance for doubtful accounts, which is based on a periodic evaluation of the aging and collectability of amounts due from agents and policyholders.
Loss and Loss Settlement Expense Reserves	To establish loss and loss settlement expense reserves, we make estimates and assumptions about the future development of claims. Actual results could differ materially from those estimates, which are subjective, complex and inherently uncertain. When we establish and adjust reserves, we do so given our knowledge at the time of the circumstances and facts of known claims. To the extent that we have overestimated or underestimated our loss and loss settlement expense reserves, we adjust the reserves in the period in which such adjustment is determined.We record our best estimate of reserves for claim litigation that arises in the ordinary course of business.
Universal Life and Annuity Policies	On universal life and deferred annuity policies (i.e., non-traditional business), income and expenses are reported when charged and credited to policyholder account balances in order to result in recognition of profits over the lives of the related contracts. We accomplish this by means of a provision for future policy benefits and the deferral and subsequent amortization of policy acquisition costs.
Reinsurance	Premiums earned and losses and loss settlement expenses incurred are reported net of reinsurance ceded. Ceded insurance business is accounted for on a basis consistent with the original policies issued and the terms of the reinsurance contracts.
Investments	Investments in fixed maturities include bonds and redeemable preferred stocks. Our investments in available-for-sale fixed maturities and trading securities are recorded at fair value. Investments in equity securities, which include common and non-redeemable preferred stocks are recorded at fair value with changes in value recorded as a component of income. Changes in unrealized appreciation and depreciation, with respect to available-for-sale fixed maturities are reported as a component of accumulated other comprehensive income, net of applicable deferred income taxes, in stockholders' equity. Changes in unrealized appreciation and depreciation, with respect to trading securities, are reported as a component of income.
Cash and Cash Equivalents	For purposes of reporting cash flows, cash and cash equivalents include cash, money market accounts, and non-negotiable certificates of deposit with original maturities of three months or less.
Deferred Policy Acquisition Costs ("DAC")	Certain costs associated with underwriting new business (primarily commissions, premium taxes and variable underwriting and policy issue expenses associated with successful acquisition efforts) are deferred. Our continuing operations property and casualty insurance DAC is amortized as premium revenue is recognized. The method followed in computing DAC limits the amount of such deferred costs to their estimated realizable value. This takes into account the premium to be earned, losses and loss settlement expenses expected to be incurred and certain other costs expected to be incurred as the premium is earned. This calculation is performed by line of business in a manner consistent with how the policies are currently being marketed and managed. For the discontinued operations traditional life insurance policies, DAC was amortized to income over the premium-paying period in proportion to the ratio of the expected annual premium revenue to the expected total premium revenue. Expected premium revenue and gross profits are based on the same mortality and withdrawal assumptions used in determining future policy benefits. These assumptions are not revised after policy issuance unless the recorded DAC asset is deemed to be unrecoverable from future expected profits.
Property, Equipment and Depreciation	Property and equipment is presented at cost less accumulated depreciation. Expenditures for maintenance and repairs on property and equipment are generally expensed as incurred. We periodically review these assets for impairment whenever events or changes in business circumstances indicate that the carrying value of the underlying asset may not be recoverable. A loss would be recognized if the estimated fair value of the asset were less than its carrying value. Depreciation is computed primarily by the straight-line method over the following estimated useful lives: Useful Life Computer equipment and software Three years Furniture and fixtures Seven years Leasehold improvements Shorter of the lease term or useful life of the asset Real estate Seven years to thirty-nine years Airplane Five years
Goodwill and Other Intangible Assets	Goodwill assets arise as a result of business combinations and consist of the excess of the fair value of consideration paid over the tangible and intangible assets acquired and liabilities assumed. All of our goodwill assets relate to the acquisition of Mercer Insurance Group, Inc. on March 28, 2011. We evaluate goodwill assets for impairment at least on an annual basis or whenever events or changes in circumstances indicate that it is more likely than not that the carrying amount of goodwill assets may exceed their implied fair value. Any impairment is recognized in the period that the impairment is identified. During the third quarter of 2020, we completed our annual quantitative analysis of goodwill. As a result of the quantitative analysis, we impaired the remaining balance of our goodwill of $15,091 as of September 30, 2020, based on the following factors: (i) disruptions in the equity markets, specifically for property and casualty insurance companies, as a result of the COVID-19 pandemic and due to recent weather related catastrophes; (ii) recent elevated commercial auto loss ratios and (iii) the fair value of our stock trading significantly below book value. The Company used a weighting of the income and market approaches to determine the fair value of the reporting unit. Our other intangible assets, which consist primarily of agency relationships, trade names, state insurance licenses, and software, are being amortized by the straight-line method over periods ranging from 2 years to 15 years, with the exception of state insurance licenses, which are indefinite-lived and not amortized.
Income Taxes	The Tax Cuts and Jobs Act of 2017 (the "Tax Act") was enacted on December 22, 2017. The Tax Act significantly revised the U.S. corporate income tax laws including lowering the U.S. federal corporate tax rate from 35 percent to 21 percent, effective January 1, 2018. In December 2017, the SEC staff issued Staff Accounting Bulletin No. 118, which addresses how a company recognizes provisional amounts when a company does not have the necessary information available, prepared or analyzed in reasonable detail to complete its accounting for the effect of the changes in the Tax Act. The measurement period ends when a company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. As of December 31, 2018 we had completed accounting for the tax effects of enactment of the Tax Act and no adjustments were made during the measurement period. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") was enacted in response to the COVID-19 pandemic. The CARES Act, among other things, permits net operating loss ("NOL") carryovers and carrybacks to offset 100 percent of taxable income for taxable years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2020, 2019 and 2018 to be carried back to each of the five preceding taxable years to generate a refund of previously paid income taxes. The Company has considered the implications of the CARES Act on its tax provision and has included an income tax benefit of $18.6 million as the result of this Act. Deferred tax assets and liabilities are established based on differences between the financial statement bases of assets and liabilities and the tax bases of those same assets and liabilities, using the currently enacted statutory tax rates. Deferred income tax expense is measured by the year-to-year change in the net deferred tax asset or liability, except for certain changes in deferred tax amounts that affect stockholders' equity and do not impact federal income tax expense. The Company performs a quarterly review of its tax positions and makes a determination whether it is more likely than not that the tax position will be sustained upon examination. If, based on this review, it appears not more likely than not that the position will be sustained, the Company will calculate any unrecognized tax benefits and calculate any interest and penalties. At December 31, 2020, 2019, and 2018 the Company did not recognize any liability for unrecognized tax benefits. In addition, we have not accrued for interest and penalties related to unrecognized tax
Leases	The Company determines if a contract contains a lease at inception of the contract. The Company's inventory of leases consists of operating leases which are recorded as a lease obligation liability disclosed in the "Accrued expenses and other liabilities" line on the Consolidated Balance Sheets and as a lease right-of-use asset disclosed in the "Other assets" line on the Consolidated Balance Sheets. The Company's operating leases consist of office space, vehicles, computer equipment and office equipment. The lease right-of-use asset represents the Company's right to use each underlying asset for the lease term and the lease obligation liability represents the Company's obligation over the lease term. The Company's lease obligation is recorded at the present value of the lease payments based on the term of the applied lease. Short-term leases of 12 months or less are recorded on the Consolidated Balance Sheets and lease payments are recognized on the Consolidated Statements of Income and Comprehensive Income.
Variable Interest Entities	The Company and certain related parties are equity investors in one investment in which the Company determined is a variable interest entity ("VIE") as a result of participation in the risks and rewards of the VIE based on the objectives and strategies of the VIE. The VIE is a limited liability company that primarily invests in commercial real estate. The Company and certain related parties are not the primary beneficiary largely due to their inability to influence management or direct the activities that most significantly impact the VIE's economic performance. Based on these facts and circumstances, the Company has a variable interest in the VIE, but has not consolidated the VIE's financial results as it is not the primary beneficiary. The Company's investment is reported in other long-term investments in the Consolidated Balance Sheets and accounted for under the equity method of accounting.
Stock-Based Compensation	We currently have two equity compensation plans. One plan allows us to grant restricted and unrestricted stock, stock appreciation rights, incentive stock options, and non-qualified stock options to employees. The other plan allows us to grant restricted and non-qualified stock options to non-employee directors.We utilize the Black-Scholes option pricing method to establish the fair value of non-qualified stock options granted under our equity compensation plans. Our determination of the fair value of stock options on the date of grant using this option-pricing model is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables, which include the expected volatility in our stock price, the expected term of the award, the expected dividends to be paid over the term of the award and the expected risk-free interest rate. Any changes in these assumptions may materially affect the estimated fair value of the award. For our restricted and unrestricted stock awards, we utilize the fair value of our common stock on the date of grant to establish the fair value of the award.
Credit Losses	The Company recognizes credit losses for its available-for-sale fixed-maturity portfolio, reinsurance receivables, mortgage loans and premium receivables by setting up allowances which are remeasured each reporting period and recorded in the Consolidated Statements of Income and Comprehensive Income. For our available-for-sale fixed-maturity portfolio an allowance for credit losses is recorded net of available-for-sale fixed maturities in the Consolidated Balance Sheets and a corresponding credit loss recognized as a realized loss or gain in the Consolidated Statements of Income and Comprehensive Income. The Company determines if an allowance for credit losses is recorded based on a number of factors including the current economic conditions, management's expectations of future economic conditions and performance indicators, such as market value vs. amortized cost, investment spreads widening or contracting, rating actions, payment and default history. The Company does not recognize an allowance for credit losses for accrued interest receivable for available-for-sale fixed-maturity securities, which is recorded in "Accrued investment income" in the Consolidated Balance Sheets and "Investment income, net of investment expenses" in the Consolidated Statements of Income and Comprehensive Income. The Company considers collections of accrued investment income within six months to be timely and therefore not requiring a write- off. If a write-off is required for accrued investment income outstanding greater than six months, the Company writes off accrued interest by reversing net investment income. For more information on credit losses and the allowance for credit losses for available-for-sale fixed-maturity portfolio, see Note 2 "Summary of Investments." An allowance for mortgage loan losses is established based on historical loss information of the collective pool of the Company's commercial mortgage loan investments which have similar risk characteristics. To calculate the allowance for mortgage loan losses, the Company starts with historical loan experience to predict the future expected losses and then layers on a market-linked adjustment. On a quarterly basis, quantitative credit risk metrics, including for example, cash- flows, rent rolls and financial statements are reviewed for each loan to determine if it is performing in line with its expectations. This allowance is presented as a separate line in the Consolidated Balance Sheets beneath the asset value as well as presented net and recorded through "Net realized investment gains (losses)" in the Consolidated Statements of Income and Comprehensive Income. For more information on credit losses and the allowance for credit losses for our investment in mortgage loans see Note 3 "Fair Value of Financial Instruments." For reinsurance receivables, the Company's model estimates expected credit loss by multiplying the exposure at default by both the probability of default and loss given default ("LGD"). The LGD is estimated by the rating of the Company, historical relationship with UFG, existence of letters of credit and known regulation the Company may be held accountable for. The ultimate LGD percentage is estimated after considering Moody’s experience with unsecured year 1 bond recovery rates from 1983-2017. The allowance calculated as of December 31, 2020 is recorded through the line "Reinsurance receivables and recoverables" in the Consolidated Balance Sheets and through the line "Other underwriting expenses" in the Consolidated Statements of Income and Other Comprehensive Income. As of December 31, 2020, the Company had a credit loss allowance for reinsurance receivables of $190. Rollforward of Credit Loss Allowance for Reinsurance Receivable As of December 31, 2020 Beginning balance, January 1, 2020 $ 38 Current-period provision for expected credit losses 152 Write-off charged against the allowance, if any — Recoveries of amounts previously written off, if any — Ending balance of the allowance for reinsurance receivable, December 31, 2020 $ 190 With respect to premiums receivable, the Company utilizes an aging method to estimate credit losses. An allowance for doubtful accounts is based on a periodic evaluation of the aging and collectability of amounts due from agents and policyholders. "Premiums receivable" are presented in the Consolidated Balance Sheets net of an estimated allowance for doubtful accounts and recorded through "Other underwriting expenses" in the Consolidated Statements of Income and Comprehensive Income.
Comprehensive Income	Comprehensive income includes all changes in stockholders' equity during a period except those resulting from investments by and dividends to stockholders.
Subsequent Events	In the preparation of the accompanying financial statements, the Company has evaluated all material subsequent events or transactions that occurred after the balance sheet date through the date on which the financial statements were issued for potential recognition or disclosure in the Company's financial statements.Subsequent to the completion of the financial statements as of December 31, 2020, the Company made the decision to change the post-retirement benefit plan to a voluntary plan funded exclusively by participants, commencing at the start of 2023. The impact of this decision will be reflected in the financial statements subsequent to December 31, 2020. As of December 31, 2020, the post-retirement benefit obligation was $31,666. This benefit obligation, along with the unrecognized prior service costs, will be released into the Consolidated Statement of Income and Other Comprehensive Income over the next two years.
Recently Issued Accounting Standards and Pending Adoption of Accounting Standards	Accounting Standards Adopted in 2020 Intangibles - Other Internal Use Software In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a cloud computing hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. The guidance requires the Company to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The new guidance was effective for annual and interim periods beginning after December 15, 2019. The Company adopted the new guidance as of January 1, 2020. The adoption did not have a significant impact on the Company's financial position or results of operations. Financial Instruments - Credit Losses In June 2016, the FASB issued new guidance on the measurement of credit losses for most financial instruments. The new guidance replaces the incurred loss model for recognizing credit losses with an expected loss model for instruments measured at amortized cost and requires allowances to be recorded for available-for-sale debt securities rather than reduce the carrying amount. These allowances are remeasured each reporting period. The new guidance was effective for annual periods beginning after December 15, 2019 and interim periods within those years. The new guidance impacted the Company's impairment model related to our available-for-sale fixed-maturity portfolio, reinsurance receivables and mortgage loans. The Company has performed a run of the credit loss models as of January 1, 2020. These models resulted in an immaterial expected credit loss at January 1, 2020. Prior to the adoption of the new guidance, the Company utilized an aging method to estimate credit losses on premiums receivable. This aging method is permitted under the new guidance. The Company adopted the new guidance prospectively as of January 1, 2020 recording a cumulative effect adjustment to opening retained earnings of $30. This cumulative effect adjustment is an allowance related to the Company's reinsurance receivables. The adoption of the new guidance did not have a material impact on the Company's financial position and results of operations. Goodwill In January 2017, the FASB issued new guidance which simplifies the test for goodwill impairment. The new guidance eliminates the implied fair value calculation when measuring a goodwill impairment charge. Under the new guidance, impairment charges are based on the excess of the carrying value over fair value of goodwill. The new guidance was effective for annual and interim periods beginning after December 15, 2019. The Company adopted the new guidance as of January 1, 2020. The adoption did not have a significant impact on the Company's financial position or results of operations. Financial Instruments - Disclosures In August 2018, the FASB issued new guidance which modifies the disclosure requirements on fair value measurements of financial instruments. The new guidance removes the requirement for disclosing the amount and reason for transfers between Level 1 and Level 2 investment securities and the valuation processes for Level 3 fair value measurements. The guidance also requires additional disclosures on the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. The new guidance is effective for annual and interim periods beginning after December 15, 2019. The Company adopted the new guidance as of January 1, 2020. The adoption modified existing fair value disclosures, but did not have an impact on the Company's financial position or results of operations. Pending Adoption of Accounting Standards Defined Benefit Plans - Disclosures In August 2018, the FASB issued new guidance which modifies the disclosure requirements for employers that sponsor defined benefit pension and postretirement plans. The new guidance removes the requirement for disclosing the amounts in accumulated other comprehensive income expected to be recognized as components of net periodic benefit costs in the next year and the sensitivity of postretirement health plans to one-percentage-point changes in medical trend rates. The new guidance is effective for annual periods beginning after December 15, 2020. The Company adopted the new guidance as of January 1, 2021. The new guidance will modify existing disclosures, but will not have an impact on the Company's financial position and results of operations. Income Taxes
Fair Value Measurement	Current accounting guidance on fair value measurements includes the application of a fair value hierarchy that requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Our financial instruments that are recorded at fair value are categorized into a three-level hierarchy, which is based upon the priority of the inputs to the valuation technique. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets (i.e., Level 1) and the lowest priority to unobservable inputs (i.e., Level 3). If the inputs used to measure fair value fall within different levels of the hierarchy, the category level is based on the lowest priority level input that is significant to the fair value measurement of the financial instrument. Financial instruments recorded at fair value are categorized in the fair value hierarchy as follows: • Level 1 : Valuations are based on unadjusted quoted prices in active markets for identical financial instruments that we have the ability to access. • Level 2 : Valuations are based on quoted prices for similar financial instruments, other than quoted prices included in Level 1, in markets that are not active or on inputs that are observable either directly or indirectly for the full term of the financial instrument. • Level 3 : Valuations are based on pricing or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement of the financial instrument. Such inputs may reflect management's own assumptions about the assumptions a market participant would use in pricing the financial instrument. We review our fair value hierarchy categorizations on a quarterly basis at which time the classification of certain financial instruments may change if the input observations have changed. Transfers between levels, if any, are recorded as of the beginning of the reporting period. To determine the fair value of the majority of our investments, we utilize prices obtained from independent, nationally recognized pricing services. We obtain one price for each security. When the pricing services cannot provide a determination of fair value for a specific security, we obtain non-binding price quotes from broker-dealers with whom we have had several years of experience and who have demonstrated knowledge of the subject security. We request and utilize one broker quote per security. In order to determine the proper classification in the fair value hierarchy for each security where the price is obtained from an independent pricing service, we obtain and evaluate the vendors' pricing procedures and inputs used to price the security, which include unadjusted quoted market prices for identical securities, such as a New York Stock Exchange closing price, and quoted prices for identical securities in markets that are not active. For fixed maturity securities, an evaluation of interest rates and yield curves observable at commonly quoted intervals, volatility, prepayment speeds, credit risks and default rates may also be performed. We have determined that these processes and inputs result in fair values and classifications consistent with the applicable accounting guidance on fair value measurements. When possible, we use quoted market prices to determine the fair value of fixed maturities, equity securities, trading securities and short-term investments. When quoted market prices do not exist, we base estimates of fair value on market information obtained from independent pricing services and brokers or on valuation techniques that are both unobservable and significant to the overall fair value measurement of the financial instrument. Such inputs may reflect management's own assumptions about the assumptions a market participant would use in pricing the financial instrument. Our valuation techniques are discussed in more detail throughout this section. The mortgage loan portfolio consists entirely of commercial mortgage loans. The fair value of our mortgage loans is determined by modeling performed by our third party fund manager based on the stated principal and coupon payments provided for in the loan agreements. These cash flows are then discounted using an appropriate risk-adjusted discount rate to determine the security's fair value. Our other long-term investments consist primarily of our interests in limited liability partnerships that are recorded on the equity method of accounting. The fair value of the partnerships is obtained from the fund managers, which is based on the fair value of the underlying investments held in the partnerships. In management's opinion, these values represent a reasonable estimate of fair value. We have not adjusted the net asset value provided by the fund managers. For cash and cash equivalents and accrued investment income, carrying value is a reasonable estimate of fair value due to the short-term nature of these financial instruments.
Earnings Per Share	Basic earnings per share is computed by dividing net income by the weighted-average number of common shares outstanding during the reporting period. Diluted earnings per share gives effect to all dilutive common shares outstanding during the reporting period. The dilutive shares we consider in our diluted earnings per share calculation relate to our outstanding stock options and restricted stock awards.We determine the dilutive effect of our outstanding stock options using the "treasury stock" method. Under this method, we assume the exercise of all of the outstanding stock options whose exercise price is less than the weighted-average market value of our common stock during the reporting period. This method also assumes that the proceeds from the hypothetical stock option exercises are used to repurchase shares of our common stock at the weighted-average market value of the stock during the reporting period. The net of the assumed stock options exercised and assumed common shares repurchased represents the number of dilutive common shares, which we add to the denominator of the earnings per share calculation.

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Components of Deferred Acquisition Costs	The following table is a summary of the components of DAC that are reported in the accompanying Consolidated Financial Statements. Continuing Operations - Property and Casualty Insurance 2020 2019 2018 Recorded asset at beginning of year $ 94,292 $ 92,796 $ 88,102 Underwriting costs deferred 203,054 218,195 210,926 Amortization of deferred policy acquisition costs (210,252) (216,699) (206,232) Recorded asset at end of year $ 87,094 $ 94,292 $ 92,796 Discontinued Operations - Life Insurance Recorded asset at beginning of year $ — $ — $ 71,151 Underwriting costs deferred — — 1,376 Amortization of deferred policy acquisition costs — — (1,895) $ — $ — $ 70,632 Change in "shadow" deferred policy acquisition costs — — 7,274 Sale of discontinued operations — — (77,906) Recorded asset at end of year $ — $ — $ — Total Recorded asset at beginning of year $ 94,292 $ 92,796 $ 159,253 Underwriting costs deferred 203,054 218,195 212,302 Amortization of deferred policy acquisition costs (210,252) (216,699) (208,127) $ 87,094 $ 94,292 $ 163,428 Change in "shadow" deferred policy acquisition costs — — 7,274 Sale of discontinued operations — — (77,906) Recorded asset at end of year $ 87,094 $ 94,292 $ 92,796
Schedule of Property and Equipment	The following table is a summary of the components of the property and equipment that are reported in the accompanying Consolidated Financial Statements. 2020 2019 Real estate: Land $ 2,974 $ 2,982 Buildings 85,776 83,360 Furniture and fixtures 6,058 7,253 Computer equipment and software 35,066 23,394 Airplane — — Total property and equipment $ 129,874 $ 116,989 Depreciation is computed primarily by the straight-line method over the following estimated useful lives: Useful Life Computer equipment and software Three years Furniture and fixtures Seven years Leasehold improvements Shorter of the lease term or useful life of the asset Real estate Seven years to thirty-nine years Airplane Five years
Schedule of Rollforward of Credit Loss Allowance for Reinsurance Receivable	As of December 31, 2020, the Company had a credit loss allowance for reinsurance receivables of $190. Rollforward of Credit Loss Allowance for Reinsurance Receivable As of December 31, 2020 Beginning balance, January 1, 2020 $ 38 Current-period provision for expected credit losses 152 Write-off charged against the allowance, if any — Recoveries of amounts previously written off, if any — Ending balance of the allowance for reinsurance receivable, December 31, 2020 $ 190

SUMMARY OF INVESTMENTS (Tables)

SUMMARY OF INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Reconciliation of Amortized Cost to Fair Value	The table that follows is a reconciliation of the amortized cost (cost for equity securities) to fair value of investments in available-for-sale fixed maturity securities, presented on a consolidated basis as of December 31, 2020 and 2019. December 31, 2020 Type of Investment Cost or Amortized Cost Gross Unrealized Appreciation Gross Unrealized Depreciation Fair Value Allowance for Credit Losses Carrying Value AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 149,481 $ 482 $ 25 $ 149,938 $ — $ 149,938 U.S. government agency 60,502 4,016 — 64,518 — 64,518 States, municipalities and political subdivisions General obligations: Midwest 77,933 4,047 — 81,980 — 81,980 Northeast 29,071 1,379 — 30,450 — 30,450 South 104,522 5,448 — 109,970 — 109,970 West 102,590 7,431 — 110,021 — 110,021 Special revenue: Midwest 115,956 9,142 — 125,098 — 125,098 Northeast 56,317 4,759 — 61,076 — 61,076 South 208,739 17,967 — 226,706 — 226,706 West 129,417 9,982 — 139,399 — 139,399 Foreign bonds 27,799 1,805 2 29,602 — 29,602 Public utilities 76,114 7,388 — 83,502 — 83,502 Corporate bonds Energy 22,441 2,895 — 25,336 — 25,336 Industrials 39,513 3,744 — 43,257 — 43,257 Consumer goods and services 46,521 4,046 — 50,567 — 50,567 Health care 6,678 898 — 7,576 — 7,576 Technology, media and telecommunications 37,270 4,381 15 41,636 — 41,636 Financial services 93,736 7,564 269 101,031 5 101,026 Mortgage-backed securities 20,305 326 54 20,577 — 20,577 Collateralized mortgage obligations Government national mortgage association 81,758 4,439 45 86,152 — 86,152 Federal home loan mortgage corporation 151,362 2,239 758 152,843 — 152,843 Federal national mortgage association 81,952 2,013 683 83,282 — 83,282 Asset-backed securities 314 612 — 926 — 926 Total Available-For-Sale Fixed Maturities $ 1,720,291 $ 107,003 $ 1,851 $ 1,825,443 $ 5 $ 1,825,438 December 31, 2019 Type of Investment Cost or Amortized Cost Gross Unrealized Appreciation Gross Unrealized Depreciation Fair Value AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 69,300 $ 203 $ 12 $ 69,491 U.S. government agency 97,962 2,344 104 100,202 States, municipalities and political subdivisions General obligations: Midwest 85,607 2,987 — 88,594 Northeast 30,120 1,150 — 31,270 South 111,688 3,515 — 115,203 West 105,569 4,748 — 110,317 Special revenue: Midwest 133,717 6,175 — 139,892 Northeast 58,665 2,878 — 61,543 South 224,214 10,452 — 234,666 West 138,557 6,287 — 144,844 Foreign bonds 4,936 181 — 5,117 Public utilities 60,950 2,701 — 63,651 Corporate bonds Energy 28,695 1,429 — 30,124 Industrials 52,249 1,766 — 54,015 Consumer goods and services 47,131 2,335 — 49,466 Health care 8,998 482 — 9,480 Technology, media and telecommunications 25,931 1,739 — 27,670 Financial services 96,613 3,870 230 100,253 Mortgage-backed securities 6,250 127 21 6,356 Collateralized mortgage obligations Government national mortgage association 78,400 2,053 97 80,356 Federal home loan mortgage corporation 123,572 1,150 220 124,502 Federal national mortgage association 70,322 1,631 108 71,845 Asset-backed securities 314 436 — 750 Total Available-For-Sale Fixed Maturities $ 1,659,760 $ 60,639 $ 792 $ 1,719,607
Contractual Maturity of Investments	The amortized cost and fair value of available-for-sale fixed maturity securities at December 31, 2020, by contractual maturity, are shown in the following table. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Asset-backed securities, mortgage-backed securities and collateralized mortgage obligations may be subject to prepayment risk and are therefore not categorized by contractual maturity. Maturities Available-For-Sale December 31, 2020 Amortized Cost Fair Value Due in one year or less $ 32,214 $ 32,467 Due after one year through five years 476,667 502,699 Due after five years through 10 years 400,277 431,271 Due after 10 years 475,442 515,226 Asset-backed securities 314 926 Mortgage-backed securities 20,305 20,577 Collateralized mortgage obligations 315,072 322,277 $ 1,720,291 $ 1,825,443
Summary of Net Realized Investment Gains (Losses)	A summary of net realized investment gains (losses) for 2020, 2019 and 2018, is as follows: 2020 2019 2018 Net realized investment gains (losses) from continuing operations Fixed maturities: Available-for-sale $ 1,787 $ 655 $ (254) Allowance for credit losses (5) — — Trading securities Change in fair value (3,314) 1,351 (296) Sales 2,950 1,993 1,226 Equity securities Change in fair value (6,875) 51,231 (21,994) Sales (26,906) 725 1,702 Mortgage loans (4) (26) (46) Real estate (28) (2,150) (517) Total net realized investment gains (losses) from continuing operations $ (32,395) $ 53,779 $ (20,179) Total net realized investment gains (losses) from discontinued operations — — (1,057) Total net realized investment gains (losses) $ (32,395) $ 53,779 $ (21,236)
Schedule of Proceeds and Gross Realized Gains (Losses)	The proceeds and gross realized gains (losses) on the sale of available-for-sale fixed maturity securities from continuing operations for 2020, 2019 and 2018, are as follows: 2020 2019 2018 Proceeds from sales $ 50,744 $ 41,760 $ 132,250 Gross realized gains 1,400 302 140 Gross realized losses (495) (13) (517)
Schedule of Net Investment Income	Net investment income for the years ended December 31, 2020, 2019 and 2018, is comprised of the following: Years Ended December 31, 2020 2019 2018 Investment income from continuing operations: Interest on fixed maturities $ 46,478 $ 50,274 $ 51,356 Dividends on equity securities 6,368 7,842 7,731 Income on other long-term investments Investment income 1,890 3,115 8,383 Change in value (1) (9,633) 1,114 (10,116) Interest on mortgage loans 1,949 1,595 412 Interest on short-term investments 107 522 606 Interest on cash and cash equivalents 763 2,681 1,875 Other 205 252 307 Total investment income from continuing operations $ 48,127 $ 67,395 $ 60,554 Less investment expenses 8,457 6,981 7,660 Net investment income from continuing operations $ 39,670 $ 60,414 $ 52,894 Net investment income from discontinued operations $ — $ — $ 12,663 Net investment income $ 39,670 $ 60,414 $ 65,557 (1) Represents the change in value of our interests in limited liability partnerships that are recorded on the equity method of accounting.
Schedule of Rollforward of Allowance for Credit Losses for Available-for-Sale Fixed Maturity Securities	The following table contains a rollforward of the allowance for credit losses for available-for-sale fixed maturity securities at December 31, 2020: Rollforward of allowance for credit losses for available-for-sale fixed maturity securities: As of December 31, 2020 Beginning balance, January 1, 2020 $ — Additions to the allowance for credit losses for which credit losses were not previously recorded 5 Reductions for securities sold during the period (realized) — Writeoffs charged against the allowance — Recoveries of amounts previously written off — Ending balance, December 31, 2020 $ 5
Summary of Changes in Net Unrealized Investment Appreciation	A summary of changes in net unrealized investment appreciation for 2020, 2019 and 2018, is as follows for continuing operations and discontinued operations: 2020 2019 2018 Change in net unrealized investment appreciation Available-for-sale fixed maturities $ 45,305 $ 71,648 $ (57,475) Deferred policy acquisition costs — — 7,274 Income tax effect (9,514) (15,046) 10,543 Cumulative change in accounting principles — — (191,244) Net unrealized investment depreciation of discontinued operations, sold — — 6,714 Total change in net unrealized investment appreciation (depreciation), net of tax $ 35,791 $ 56,602 $ (224,188)
Summary of Investments in Unrealized Loss Position	The following tables summarize our fixed maturity securities that were in an unrealized loss position reported on a consolidated basis at December 31, 2020 and 2019. The securities are presented by the length of time they have been continuously in an unrealized loss position. Non-credit related unrealized losses are recognized as a component of other comprehensive income and represent other market movements that are not credit related, for example interest rate changes. We have no intent to sell, and it is more likely than not that we will not be required to sell, these securities until the fair value recovers to at least equal our cost basis or the securities mature. December 31, 2020 Less than 12 months 12 months or longer Total Type of Investment Number Fair Gross Unrealized Number Fair Gross Unrealized Depreciation Fair Gross Unrealized Depreciation AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury 5 $ 86,371 $ 25 — $ — $ — $ 86,371 $ 25 Foreign bonds 1 2,000 2 — — — 2,000 2 Corporate bonds Technology, media and telecommunications 1 2,020 15 — — — 2,020 15 Financial services 1 2,995 5 1 3,000 7 5,995 12 Mortgage-backed securities 2 8,099 53 5 118 1 8,217 54 Collateralized mortgage obligations Government national mortgage association 2 12,394 45 1 24 — 12,418 45 Federal home loan mortgage corporation 24 97,691 758 1 26 — 97,717 758 Federal national mortgage association 10 44,677 683 — — — 44,677 683 Total Available-for-Sale Fixed Maturities 46 $ 256,247 $ 1,586 8 $ 3,168 $ 8 $ 259,415 $ 1,594 The unrealized losses on our investments in available-for-sale fixed maturities were the result of interest rate movements. We have no intent to sell, and it is more likely than not that we will not be required to sell, these securities until the fair value recovers to at least equal our cost basis or the securities mature. December 31, 2019 Less than 12 months 12 months or longer Total Type of Investment Number Fair Gross Unrealized Depreciation Number Fair Gross Unrealized Depreciation Fair Gross Unrealized Depreciation AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury — $ — $ — 2 $ 4,733 $ 12 $ 4,733 $ 12 U.S. government agency 3 13,846 104 — — — 13,846 104 Corporate bonds - financial services 3 10,906 142 1 4,913 88 15,819 230 Mortgage-backed securities — — — 13 1,585 21 1,585 21 Collateralized mortgage obligations Government national mortgage association 2 8,444 38 5 3,053 59 11,497 97 Federal home loan mortgage corporation 12 50,829 183 3 4,844 37 55,673 220 Federal national mortgage association 4 23,515 90 3 1,102 18 24,617 108 Total Available-for-Sale Fixed Maturities 24 $ 107,540 $ 557 27 $ 20,230 $ 235 $ 127,770 $ 792

FAIR VALUE OF FINANCIAL INSTR_2

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Carrying Value and Estimated Fair Value of Financial Instruments	A summary of the carrying value and estimated fair value of our financial instruments from at December 31, 2020 and 2019 is as follows: December 31, 2020 December 31, 2019 Fair Value Carrying Value Fair Value Carrying Value Assets Investments Fixed maturities: Available-for-sale securities $ 1,825,443 $ 1,825,438 $ 1,719,607 $ 1,719,607 Trading securities — — 15,256 15,256 Equity securities 206,685 206,685 299,203 299,203 Mortgage loans 48,932 47,614 43,992 42,448 Other long-term investments 69,305 69,305 78,410 78,410 Short-term investments 175 175 175 175 Cash and cash equivalents 87,948 87,948 120,722 120,722 Corporate-owned life insurance 8,557 8,557 6,777 6,777 Liabilities Long term debt 50,000 50,000 — —
Financial Instruments Measured at Fair Value on Recurring Basis	The following tables present the categorization for our financial instruments measured at fair value on a recurring basis. The tables include financial instruments at December 31, 2020 and 2019: Fair Value Measurements Description December 31, 2020 Level 1 Level 2 Level 3 AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 149,938 $ — $ 149,938 $ — U.S. government agency 64,518 — 64,518 — States, municipalities and political subdivisions General obligations Midwest 81,980 — 81,980 — Northeast 30,450 — 30,450 — South 109,970 — 109,970 — West 110,021 — 110,021 — Special revenue Midwest 125,098 — 125,098 — Northeast 61,076 — 61,076 — South 226,706 — 226,706 — West 139,399 — 139,399 — Foreign bonds 29,602 — 29,602 — Public utilities 83,502 — 83,502 — Corporate bonds Energy 25,336 — 25,336 — Industrials 43,257 — 43,257 — Consumer goods and services 50,567 — 50,567 — Health care 7,576 — 7,576 — Technology, media and telecommunications 41,636 — 41,636 — Financial services 101,031 — 100,781 250 Mortgage-backed securities 20,577 — 20,577 — Collateralized mortgage obligations Government national mortgage association 86,152 — 86,152 — Federal home loan mortgage corporation 152,843 — 152,843 — Federal national mortgage association 83,282 — 83,282 — Asset-backed securities 926 — 926 Total Available-For-Sale Fixed Maturities $ 1,825,443 $ — $ 1,824,267 $ 1,176 Equity securities Public utilities 16,320 16,320 — — Energy 9,918 9,918 — — Industrials 36,556 36,556 — — Consumer goods and services 32,061 32,061 — — Health care 24,549 24,549 — — Technology, Media & Telecommunications 17,109 17,109 — — Financial Services 69,577 69,577 — — Nonredeemable preferred stocks 595 — 595 Total Equity Securities $ 206,685 $ 206,090 $ — $ 595 Short-Term Investments $ 175 $ 175 $ — $ — Money Market Accounts $ 24,790 $ 24,790 $ — $ — Corporate-Owned Life Insurance $ 8,557 $ 8,557 $ — Total Assets Measured at Fair Value $ 2,065,650 $ 239,612 $ 1,824,267 $ 1,771 Fair Value Measurements Description December 31, 2019 Level 1 Level 2 Level 3 AVAILABLE-FOR-SALE Fixed maturities Bonds U.S. Treasury $ 69,491 $ — $ 69,491 $ — U.S. government agency 100,202 — 100,202 — States, municipalities and political subdivisions General obligations Midwest 88,594 — 88,594 — Northeast 31,270 — 31,270 — South 115,203 — 115,203 — West 110,317 — 110,317 — Special revenue Midwest 139,892 — 139,892 — Northeast 61,543 — 61,543 — South 234,666 — 234,666 — West 144,844 — 144,844 — Foreign bonds 5,117 — 5,117 — Public utilities 63,651 — 63,651 — Corporate bonds Energy 30,124 — 30,124 — Industrials 54,015 — 54,015 — Consumer goods and services 49,466 — 49,466 — Health care 9,480 — 9,480 — Technology, media and telecommunications 27,670 — 27,670 — Financial services 100,253 — 100,003 250 Mortgage-backed securities 6,356 — 6,356 — Collateralized mortgage obligations Government national mortgage association 80,356 — 80,356 — Federal home loan mortgage corporation 124,502 — 124,502 — Federal national mortgage association 71,845 — 71,845 — Asset-backed securities 750 — — 750 Total Available-For-Sale Fixed Maturities $ 1,719,607 $ — $ 1,718,607 $ 1,000 TRADING Fixed maturities Bonds Corporate bonds Consumer goods and services $ 2,276 $ — $ 2,276 $ — Health care 4,701 — 4,701 — Technology, media and telecommunications 1,732 — 1,732 — Financial services 2,460 — 2,460 — Redeemable preferred stocks 4,087 4,087 — — Total Trading Securities $ 15,256 $ 4,087 $ 11,169 $ — Equity securities Public utilities $ 16,295 $ 16,295 $ — $ — Energy 14,639 14,639 — — Industrials 57,330 57,330 — — Consumer goods and services 29,935 29,935 — — Health care 27,285 27,285 — — Financial Services 19,265 19,265 — — Technology, media and telecommunications 127,780 127,780 — — Nonredeemable preferred stocks 6,674 6,079 — 595 Total Equity Securities $ 299,203 $ 298,608 $ — $ 595 Short-Term Investments $ 175 $ 175 $ — $ — Money Market Accounts $ 9,334 $ 9,334 $ — $ — Corporate-Owned Life Insurance $ 6,777 $ — $ 6,777 $ — Total Assets Measured at Fair Value $ 2,050,352 $ 312,204 $ 1,736,553 $ 1,595
Summary of Quantitative Information About Level 3 Fair Value Measurements	The following table provides a quantitative information about our Level 3 securities at December 31, 2020. Quantitative Information about Level 3 Fair Value Measurements Fair Value at Valuation Technique(s) Unobservable inputs Range of weighted average significant unobservable inputs December 31, 2020 Corporate bonds - financial services $ 250 Fair value equals cost NA NA Fixed Maturities asset-backed securities 926 Discounted cash flow Probability of default 4% - 6% Nonredeemable preferred stocks 595 Discounted cash flow Multiplier 3x - 4x
Summary of Changes in Fair Value of Level 3 Securities	The following table provides a summary of the changes in fair value of our Level 3 securities for 2020: Corporate bonds Asset-backed securities Equities Total Balance at January 1, 2020 $ 250 $ 750 $ 595 $ 1,595 Unrealized gains (1) — 176 — 176 Balance at December 31, 2020 $ 250 $ 926 $ 595 $ 1,771 (1) Unrealized gains are recorded as a component of comprehensive income. The following table provides a summary of the changes in fair value of our Level 3 securities for 2019: Corporate bonds Asset-backed securities Equities Total Balance at January 1, 2019 $ 250 $ 666 $ 595 $ 1,511 Unrealized gains (losses) (1) — 84 — 84 Purchases 100 — — 100 Disposals (100) — — (100) Balance at December 31, 2019 $ 250 $ 750 $ 595 $ 1,595 (1) Unrealized gains (losses) are recorded as a component of comprehensive income.
Schedule of Commercial Mortgage Loans	The following tables present the carrying value of our commercial mortgage loans and additional information at December 31, 2020 and 2019: Commercial Mortgage Loans Loan-to-value December 31, 2020 December 31, 2019 Less than 65% $ 30,361 34,024 65%-75% 17,329 8,496 Total amortized cost $ 47,690 $ 42,520 Valuation allowance (76) (72) Total mortgage loans $ 47,614 $ 42,448 Mortgage Loans by Region December 31, 2020 December 31, 2019 Carrying Value Percent of Total Carrying Value Percent of Total East North Central $ 3,245 6.8 % $ 3,245 7.6 % Southern Atlantic 9,752 20.5 7,026 16.5 East South Central 8,197 17.2 8,358 19.7 New England 6,588 13.8 6,588 15.5 Middle Atlantic 14,936 31.2 15,076 35.5 Mountain 2,227 4.7 2,227 5.2 Other 2,745 5.8 — — Total mortgage loans at amortized cost $ 47,690 100.0 % $ 42,520 100.0 % Mortgage Loans by Property Type December 31, 2020 December 31, 2019 Carrying Value Percent of Total Carrying Value Percent of Total Commercial Multifamily $ 17,038 35.7 % $ 11,741 27.6 % Office 11,861 24.9 11,848 27.9 Industrial 10,124 21.2 10,124 23.8 Retail 2,227 4.7 2,227 5.2 Mixed use/Other 6,440 13.5 6,580 15.5 Total mortgage loans at amortized cost $ 47,690 100.0 % $ 42,520 100.0 %
Summary of Amortized Cost Basis by Year of Origination and Credit Quality Indicator	Amortized Cost Basis by Year of Origination and Credit Quality Indicator 2020 2019 2018 Total Commercial mortgage loans: Risk Rating: 1-2 internal grade $ 5,537 $ 8,393 $ 18,676 $ 32,606 3-4 internal grade — 8,496 6,588 15,084 5 internal grade — — — — 6 internal grade — — — — 7 internal grade — — — — Total commercial mortgage loans $ 5,537 $ 16,889 $ 25,264 $ 47,690 Current-period write-offs — — — — Current-period recoveries — — — — Current-period net write-offs $ — $ — $ — $ —
Summary of Rollforward of Allowance for Mortgage Loan Losses	As of December 31, 2020, the Company had an allowance for mortgage loan losses of $76, summarized in the following rollforward: Rollforward of allowance for mortgage loan losses: As of December 31, 2020 Beginning balance, January 1, 2020 $ 72 Current-period provision for expected credit losses 4 Write-off charged against the allowance, if any — Recoveries of amounts previously written off, if any — Ending balance of the allowance for mortgage loan losses, December 31, 2020 $ 76

REINSURANCE (Tables)

REINSURANCE (Tables)	12 Months Ended
	Dec. 31, 2020
Reinsurance Disclosures [Abstract]
Ceded and Assumed Reinsurance	Premiums and losses and loss settlement expenses related to our ceded and assumed business are as follows: Years Ended December 31, 2020 2019 2018 Ceded Business Ceded premiums written $ 88,339 $ 74,511 $ 66,800 Ceded premiums earned 84,924 72,023 63,487 Loss and loss settlement expenses ceded 185,653 28,447 22,317 Assumed Business Assumed premiums written $ 34,371 $ 27,869 $ 16,761 Assumed premiums earned 33,679 25,412 16,957 Loss and loss settlement expenses assumed 29,141 14,813 (3,954) Premiums and losses and loss settlement expenses related to our ceded business are as follows: Years Ended December 31, 2020 2019 2018 Ceded Business Ceded insurance in-force $ — $ — $ — Ceded premiums earned — — 716 Loss and loss settlement expenses ceded — — 1,473
Reinsurance Programs and Retentions	For 2020, there was an all lines annual aggregate excess of loss program with variable retention of 6.37 percent of gross net earned premium with a minimum retention of $58.5 million and a maximum of $71.5 million. Our all lines aggregate recovery is also limited to $30.0 million and 75.0 percent of the program was placed. For 2020, the Company recovered the maximum of $22.5 million from the all lines annual aggregate excess of loss program. For 2019, there was an all lines annual aggregate excess of loss program with a variable retention of 6.66 percent of gross net earned premium with a minimum retention of $58.5 million and a maximum of $71.5 million. Our all lines aggregate recovery is also limited to a maximum of $30.0 million. For 2018, there was an all lines annual aggregate excess of loss program with a variable retention of 6.78 percent of gross net earned premium with a minimum retention of $58.5 million and a maximum of $71.5 million. Our all lines aggregate recovery is also limited to a maximum of $30.0 million. For 2019 and 2018, the Company did not have any recoveries from the all lines annual aggregate loss program. 2020 Reinsurance Programs Type of Reinsurance Stated Retention Limits Coverage Casualty excess of loss $ 2,500 $ 60,000 100 % of $ 57,500 Property excess of loss 2,500 25,000 100 % of $ 22,500 Surety excess of loss 1,500 45,000 100 % of $ 43,500 Property catastrophe, excess 20,000 250,000 100 % of $ 230,000 Boiler and machinery N/A 50,000 100 % of $ 50,000 2019 Reinsurance Programs Type of Reinsurance Stated Retention Limits Coverage Casualty excess of loss $ 2,500 $ 60,000 100 % of $ 57,500 Property excess of loss 2,500 25,000 100 % of $ 22,500 Surety excess of loss 1,500 45,000 100 % of $ 43,500 Property catastrophe, excess 20,000 250,000 100 % of $ 230,000 Boiler and machinery N/A 50,000 100 % of $ 50,000 2018 Reinsurance Programs Type of Reinsurance Stated Retention Limits Coverage Casualty excess of loss $ 2,500 $ 60,000 100 % of $ 57,500 Property excess of loss 2,500 25,000 100 % of $ 22,500 Surety excess of loss 1,500 45,000 100 % of $ 43,500 Property catastrophe, excess 20,000 250,000 100 % of $ 230,000 Boiler and machinery N/A 50,000 100 % of $ 50,000

RESERVES FOR LOSSES AND LOSS _2

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Tables)	12 Months Ended
	Dec. 31, 2020
Insurance Loss Reserves [Abstract]
Schedule of Property and Casualty Losses Settlement Expense	The following table provides an analysis of changes in our property and casualty losses and loss settlement expense reserves for 2020, 2019 and 2018 (net of reinsurance amounts): Years Ended December 31, 2020 2019 2018 Gross liability for losses and loss settlement expenses $ 1,421,754 $ 1,312,483 $ 1,224,183 Ceded losses and loss settlement expenses (68,536) (57,094) (59,871) Net liability for losses and loss settlement expenses $ 1,353,218 $ 1,255,389 $ 1,164,312 Losses and loss settlement expenses incurred Current year $ 887,119 $ 835,507 $ 785,778 Prior years (17,652) (5,335) (54,167) Total incurred $ 869,467 $ 830,172 $ 731,611 Losses and loss settlement expense payments Current year $ 354,635 $ 333,975 $ 306,032 Prior years 421,762 398,368 334,502 Total paid $ 776,397 $ 732,343 $ 640,534 Net liability for losses and loss settlement expenses $ 1,446,288 $ 1,353,218 $ 1,255,389 Ceded loss and loss settlement expenses 131,843 68,536 57,094 Gross liability for losses and loss settlement expenses $ 1,578,131 $ 1,421,754 $ 1,312,483
Incurred and Paid Losses and Loss Settlement Expense Development	The following tables provide information about incurred and paid losses and loss settlement expense development as of December 31, 2020, net of reinsurance, as well as cumulative development, cumulative claim frequency and IBNR liabilities. Claim data for Mercer Insurance Group, Inc., which was acquired on March 28, 2011, is presented retrospectively. The cumulative number of reported claims, for calendar year 2020, 2019 and 2018, are counted for all lines of business on a per claimant per coverage basis and a single event may result in multiple claims due to the involvement of multiple individual claimants and / or multiple independent coverages. Claim counts for calendar years 2016 and prior are counted on a per claim and per coverage basis. Claim counts include open claims, claims that have been paid and closed, and reported claims that have been closed without the need for any payment. Line of business: Commercial other liability Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 81,522 $ 64,738 $ 88,371 $ 88,200 $ 79,591 $ 80,801 $ 81,463 $ 80,338 $ 81,694 $ 81,394 $ 11,202 (128) 5,634 2012 100,389 96,158 94,195 91,980 92,537 91,346 89,731 91,571 89,900 12,862 (10,489) 5,841 2013 104,982 91,460 90,502 86,119 85,399 88,816 86,082 85,999 3,498 (18,983) 6,406 2014 118,928 117,958 106,486 97,809 102,487 105,507 107,417 4,907 (11,511) 6,570 2015 137,386 125,307 120,005 127,091 129,945 131,325 10,405 (6,061) 7,732 2016 139,144 130,041 136,275 142,397 140,784 15,698 1,640 8,882 2017 139,602 139,032 152,547 156,369 24,426 16,767 8,883 2018 163,059 172,894 176,496 34,486 13,437 8,590 2019 149,173 169,344 46,518 20,171 7,537 2020 171,013 83,792 4,478 Total $ 1,310,041 Line of business: Commercial other liability Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 6,236 $ 13,670 $ 26,260 $ 40,595 $ 50,146 $ 56,150 $ 62,165 $ 64,541 $ 66,500 $ 68,052 2012 6,875 24,620 39,948 55,316 64,574 69,800 71,773 73,819 74,644 2013 9,835 25,228 39,953 54,559 65,773 72,115 75,961 78,448 2014 10,207 29,679 50,211 70,363 83,109 93,060 96,509 2015 11,185 27,182 53,901 74,292 96,339 104,472 2016 13,782 38,184 63,526 88,885 102,757 2017 17,716 43,172 70,500 91,984 2018 16,200 44,772 79,168 2019 18,221 46,986 2020 17,011 Total $ 760,031 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 35,801 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 585,811 Line of business: Commercial fire and allied Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 148,220 $ 142,330 $ 117,082 $ 120,492 $ 119,820 $ 120,219 $ 121,434 $ 121,319 $ 121,749 $ 121,982 $ 285 (26,238) 16,079 2012 138,602 110,448 108,774 108,047 107,958 108,623 109,687 109,480 110,245 634 (28,357) 6,466 2013 91,521 88,550 91,498 92,212 93,826 93,858 92,988 92,855 61 1,334 6,662 2014 126,216 131,198 128,762 128,185 128,503 126,811 127,068 108 852 7,935 2015 103,177 108,293 110,633 108,235 105,218 104,646 144 1,469 7,579 2016 147,473 144,208 143,721 143,724 143,108 667 (4,365) 9,849 2017 155,139 160,240 160,946 161,693 1,536 6,554 13,445 2018 143,280 146,951 146,378 2,610 3,098 10,683 2019 164,030 155,482 4,271 (8,548) 10,992 2020 207,207 29,773 13,368 Total $ 1,370,664 Line of business: Commercial fire and allied Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 85,585 $ 104,800 $ 109,429 $ 112,497 $ 116,614 $ 118,183 $ 120,178 $ 120,731 $ 121,063 $ 121,157 2012 71,008 94,380 100,078 103,197 105,250 106,521 106,740 107,992 108,123 2013 59,331 78,226 82,853 86,115 89,200 91,493 92,012 92,472 2014 84,456 113,663 116,750 122,370 123,697 125,745 126,307 2015 67,217 90,454 95,515 101,367 104,115 103,975 2016 92,895 125,962 132,429 137,909 139,353 2017 99,484 137,058 145,900 152,219 2018 92,770 123,559 133,703 2019 100,980 136,084 2020 128,704 Total $ 1,242,097 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 723 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 129,290 Line of business: Commercial automobile Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 84,887 $ 87,299 $ 90,750 $ 92,519 $ 92,379 $ 91,336 $ 90,766 $ 90,838 $ 90,643 $ 90,972 $ 32 6,085 15,262 2012 100,039 90,848 94,755 95,321 96,594 96,389 96,305 96,059 96,176 — (3,863) 14,365 2013 104,356 98,037 102,943 103,726 104,980 105,248 104,886 106,140 356 1,784 15,528 2014 107,723 106,076 113,720 118,869 120,385 121,077 120,599 457 12,876 17,320 2015 125,506 129,816 132,206 138,987 137,395 137,335 500 11,829 20,079 2016 174,018 175,357 174,337 175,657 173,823 1,449 (195) 27,288 2017 227,919 224,553 235,110 233,159 5,553 5,240 32,838 2018 236,629 245,173 253,045 14,134 16,416 34,380 2019 279,229 291,139 38,451 11,910 34,393 2020 243,360 71,185 22,331 Total $ 1,745,748 Line of business: Commercial automobile Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 34,332 $ 50,931 $ 65,021 $ 79,383 $ 85,348 $ 87,475 $ 88,609 $ 89,459 $ 90,515 $ 90,677 2012 39,247 57,201 71,469 82,944 90,292 93,179 94,747 94,983 96,176 2013 43,592 67,630 79,663 90,780 96,375 100,058 101,580 103,037 2014 45,704 68,033 87,590 99,922 109,682 113,751 116,843 2015 50,782 78,225 99,201 118,395 129,317 134,100 2016 66,013 103,528 128,157 148,224 164,341 2017 81,311 126,644 166,170 197,893 2018 81,572 138,092 187,405 2019 91,919 153,244 2020 67,660 Total $ 1,311,376 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance (80) Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 434,293 Line of business: Workers' compensation Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 39,967 $ 38,481 $ 35,352 $ 34,309 $ 33,585 $ 33,314 $ 33,352 $ 32,707 $ 32,384 $ 31,621 $ 159 (8,346) 3,965 2012 48,848 46,279 42,158 38,423 38,553 39,015 39,182 39,063 38,290 229 (10,558) 3,992 2013 64,048 62,579 56,369 54,584 52,761 51,753 50,984 50,349 307 (13,699) 4,255 2014 64,051 60,729 58,284 56,630 54,636 53,023 52,889 699 (11,162) 4,801 2015 53,788 55,578 51,003 46,682 46,019 44,706 578 (9,082) 5,666 2016 70,419 66,575 61,648 55,168 53,964 815 (16,455) 7,927 2017 76,184 69,528 55,982 51,874 1,182 (24,310) 8,173 2018 71,972 67,883 59,192 1,802 (12,780) 7,947 2019 52,136 49,189 2,335 (2,947) 7,113 2020 45,365 4,289 3,909 Total $ 477,439 Line of business: Workers' compensation Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 10,322 $ 21,678 $ 26,033 $ 27,497 $ 28,247 $ 29,022 $ 29,453 $ 29,700 $ 29,890 $ 30,573 2012 11,802 23,023 28,397 30,933 33,063 34,330 35,388 36,060 36,520 2013 14,136 30,209 38,023 42,941 45,078 47,071 47,572 48,093 2014 13,965 30,289 38,441 42,964 45,193 45,825 46,299 2015 12,063 27,304 35,229 38,424 39,305 40,034 2016 14,413 32,345 40,680 45,743 47,082 2017 14,647 31,309 38,083 41,672 2018 16,949 35,369 43,189 2019 13,582 29,668 2020 17,603 Total $ 380,733 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 19,345 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 116,050 Line of business: Personal Incurred losses and allocated loss settlement expenses, net of reinsurance As of December 31, 2020 For the years ended December 31, Total of incurred but not reported liabilities plus expected development on reported claims Cumulative development Cumulative number of reported claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 50,014 $ 48,534 $ 47,090 $ 47,035 $ 46,968 $ 47,013 $ 46,733 $ 46,761 $ 46,752 $ 46,751 $ — (3,263) 14,848 2012 47,924 46,199 46,403 46,150 44,715 44,352 44,165 44,158 44,160 1 (3,764) 10,790 2013 39,232 38,525 37,262 37,086 36,729 36,661 36,486 36,467 1 (2,765) 9,250 2014 53,910 52,661 52,944 52,782 52,615 52,702 52,810 12 (1,100) 10,959 2015 42,848 41,088 40,336 40,368 40,220 40,194 22 (2,654) 9,548 2016 48,072 45,840 45,379 45,961 45,113 58 (2,959) 11,896 2017 60,330 59,342 58,695 58,544 119 (1,786) 14,691 2018 51,639 51,721 52,715 365 1,076 13,658 2019 59,547 58,378 581 (1,169) 13,466 2020 81,206 6,588 15,585 Total $ 516,338 Line of business: Personal Cumulative paid losses and allocated loss settlement expenses, net of reinsurance For the years ended December 31, Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 (Unaudited) 2011 $ 36,489 $ 43,801 $ 45,306 $ 45,949 $ 46,487 $ 46,573 $ 46,575 $ 46,650 $ 46,752 $ 46,751 2012 30,415 41,979 43,375 44,448 43,569 44,139 44,158 44,158 44,159 2013 25,505 32,788 34,297 35,306 36,155 36,323 36,397 36,466 2014 37,055 47,912 49,710 51,837 52,018 52,543 52,519 2015 29,551 37,431 39,027 39,428 39,865 40,029 2016 32,999 40,910 42,660 44,046 44,618 2017 42,135 53,111 55,982 57,169 2018 37,410 47,433 49,464 2019 40,544 52,390 2020 54,181 Total $ 477,746 All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance 620 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance $ 39,210
Unpaid Losses and Loss Settlement Expenses Liability	The reconciliation of the net incurred and loss development tables to the liability for unpaid losses and loss settlement expenses in the consolidated statement of financial position is as follows. December 31, 2020 Net outstanding liabilities for unpaid losses and allocated loss settlement expenses: Commercial other liability $ 585,811 Commercial fire and allied 129,290 Commercial automobile 434,293 Commercial workers' compensation 116,050 Personal 39,210 All other lines 43,045 Net outstanding liabilities for unpaid losses and allocated loss settlement expenses 1,347,699 Net outstanding liabilities for unpaid unallocated loss settlement expenses 97,379 Fair value adjustment (purchase accounting adjustment for Mercer acquisition) 1,210 Liabilities for unpaid losses and loss settlement expenses, net of reinsurance 1,446,288 Reinsurance recoverable on unpaid losses and allocated loss settlement expenses: Commercial other liability 29,497 Commercial fire and allied 42,481 Commercial automobile 3,334 Commercial workers' compensation 47,130 Personal 8,867 All other lines 1,692 Reinsurance recoverable on unpaid losses and allocated loss settlement expenses 133,001 Reinsurance fair value amortization (purchase accounting adjustment for Mercer acquisition) (1,158) Total reinsurance recoverable on unpaid losses and loss settlement expenses 131,843 Total gross liability for unpaid losses and loss settlement expenses $ 1,578,131
Average Historical Claims Duration	The following is supplementary information about average historical claims duration as of December 31, 2020. Average annual percentage payout of incurred claims by age, net of reinsurance Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 Year 10 (Unaudited) Commercial other liability 9.6 % 16.0 % 18.0 % 16.8 % 12.3 % 7.2 % 4.3 % 2.7 % 1.7 % 1.9 % Commercial fire and allied 64.6 % 21.4 % 4.8 % 3.8 % 2.2 % 1.3 % 0.7 % 0.7 % 0.2 % 0.1 % Commercial automobile 35.9 % 20.3 % 15.5 % 12.5 % 7.5 % 3.1 % 1.7 % 0.9 % 1.2 % 0.2 % Commercial workers' compensation 29.5 % 32.4 % 14.8 % 7.6 % 3.5 % 2.5 % 1.5 % 1.2 % 0.9 % 2.2 % Personal 71.3 % 19.7 % 3.8 % 2.4 % 0.7 % 0.7 % 0.1 % 0.1 % 0.1 % — %

STATUTORY REPORTING, CAPITAL _2

STATUTORY REPORTING, CAPITAL REQUIREMENTS AND DIVIDENDS AND RETAINED EARNINGS RESTRICTIONS (Tables)	12 Months Ended
	Dec. 31, 2020
Statutory Insurance Financial Information [Abstract]
Schedule of Statutory Capital and Surplus	Statutory capital and surplus in regards to policyholders at December 31, 2020, 2019 and 2018 and statutory net income (loss) for the years then ended are as follows: Statutory Capital and Surplus Statutory Net Income (Loss) 2020 Property and casualty business $ 671,599 $ (17,705) 2019 Property and casualty business $ 707,571 $ (22,393) 2018 Property and casualty business $ 774,257 $ 219,065 Life, accident and health business (1) — 3,548 (1) The 2018 Life, accident and health business only includes results prior to the closing of the sale of United Life Insurance Company, which closed on March 30, 2018. Prior to the closing of the sale, United Fire & Casualty Company owned United Life Insurance Company, accordingly, the property and casualty statutory capital and surplus includes life, accident and health statutory capital and surplus, and therefore represents our total consolidated statutory capital and surplus.

FEDERAL INCOME TAX (Tables)

FEDERAL INCOME TAX (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal Income Tax Expense (Benefit)	Federal income tax expense (benefit) from both continuing and discontinued operations is composed of the following: Years Ended December 31, 2020 2019 2018 Current $ (46,861) $ (7,843) $ 18,493 Deferred (9,948) 9,902 (21,791) Total $ (56,809) $ 2,059 $ (3,298)
Income Tax Expense Reconciliation	A reconciliation of income tax expense (benefit) computed at the applicable federal tax rate of 21.0 percent in 2020, 2019 and 2018 to the amount recorded in the accompanying Consolidated Statements of Income and Comprehensive Income is as follows: Years Ended December 31, 2020 2019 2018 Computed expected income tax expense (benefit) $ (35,598) $ 3,544 $ 5,114 The CARES Act (18,562) — — Tax-exempt municipal bond interest income (3,669) (3,961) (4,235) Nontaxable dividend income (517) (594) (591) Goodwill impairment 3,169 — — Valuation allowance reduction — — (329) Compensation 695 1,638 (497) Reinsurance — 998 — Research and development credit (2,045) — — Other, net (282) 434 (2,760) Consolidated federal income tax expense (benefit) $ (56,809) $ 2,059 $ (3,298) Reconciliation of consolidated federal income tax expense (benefit) from: Continuing operations $ (56,809) $ 2,059 $ (11,405) Gain on sale of discontinued operations — — 7,544 Discontinued operations — — 563 Consolidated federal income tax expense (benefit) $ (56,809) $ 2,059 $ (3,298)
Components of Net Deferred Tax Liability	The significant components of our net deferred tax liability at December 31, 2020 and 2019 are as follows: December 31, 2020 2019 Deferred tax liabilities Net unrealized appreciation on investment securities: Equity securities $ 33,096 $ 48,652 All other securities 22,082 12,568 Deferred policy acquisition costs 18,289 19,801 Investments in partnerships 964 2,156 Prepaid pension cost 4,553 4,441 Net bond discount accretion 383 357 Depreciation 4,187 1,908 Revaluation of investment basis (1) 325 377 Identifiable intangible assets (1) 1,391 1,540 Capitalized Software 4,891 — Other 1,568 1,416 Gross deferred tax liability 91,729 $ 93,216 Deferred tax assets Financial statement reserves in excess of income tax reserves $ 23,851 $ 20,845 Unearned premium adjustment 18,979 20,816 Net operating loss carryforwards — 1,708 Underfunded benefit plan obligation 4,295 9,072 Post-retirement benefits other than pensions 9,533 10,785 Other-than-temporary impairment of investments 1,974 2,094 Compensation expense related to stock options 2,307 2,394 Nonqualified deferred compensation 2,066 1,623 Other 3,795 3,293 Deferred tax asset $ 66,800 $ 72,630 Net deferred tax liability $ 24,929 $ 20,586 (1) Related to our acquisition of Mercer Insurance Group, Inc.

EMPLOYEE BENEFITS (Tables)

EMPLOYEE BENEFITS (Tables)	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
Summary of Actual and Target Asset Allocation of Plan Assets	The following is a summary of the pension plan's actual and target asset allocations at December 31, 2020 and 2019 by asset category: Target Pension Plan Assets 2020 % of Total 2019 % of Total Allocation Fixed maturity securities - corporate bonds $ 21,718 8.7 % $ 13,250 6.7 % 0 % - 15 % Redeemable preferred stock 3,534 1.4 2,929 1.5 0 % - 10 % Equity securities 149,413 60.0 117,117 58.7 50 % - 70 % Pooled separate accounts Core plus bond separate account fund 26,266 10.6 20,505 10.3 0 % - 40 % U.S. property separate account fund 22,269 9.0 22,114 11.1 0 % - 25 % Arbitrage fund 9,873 4.0 9,245 4.6 0 % - 10 % United Life annuity 11,398 4.6 10,855 5.4 0 % - 10 % Cash and cash equivalents 4,264 1.7 3,451 1.7 0 % - 10 % Total plan assets $ 248,735 100.0 % $ 199,466 100.0 %
Categories of Pension Plan Assets at Fair Value on Recurring Basis	The following tables present the categorization of the pension plan's assets measured at fair value on a recurring basis at December 31, 2020 and 2019: Fair Value Measurements Description December 31, 2020 Level 1 Level 2 Level 3 Fixed maturity securities - corporate bonds $ 21,718 $ — $ 21,718 $ — Redeemable preferred stock 3,534 3,534 — — Equity securities 149,413 149,413 — — Pooled separate accounts Core plus bond separate account fund 26,266 — 26,266 — U.S. property separate account fund 22,269 — — 22,269 Arbitrage fund 9,873 — 9,873 — Money market funds 4,260 4,260 — — Total assets measured at fair value $ 237,333 $ 157,207 $ 57,857 $ 22,269 Fair Value Measurements Description December 31, 2019 Level 1 Level 2 Level 3 Fixed maturity securities - corporate bonds $ 13,250 $ — $ 13,250 $ — Redeemable preferred stock 2,929 2,929 — — Equity securities 117,117 117,117 — — Pooled separate accounts Core plus bond separate account fund 20,505 — 20,505 — U.S. property separate account fund 22,114 — — 22,114 Arbitrage fund 9,245 — 9,245 — Money market funds 3,448 3,448 — — Total assets measured at fair value $ 188,608 $ 123,494 $ 43,000 $ 22,114
Summary of Changes in Fair Value of Pension Plan Securities	The following tables provide a summary of the changes in fair value of the pension plan's Level 3 securities: U.S. property separate account fund Balance at January 1, 2020 $ 22,114 Unrealized gains 155 Balance at December 31, 2020 $ 22,269 U.S. property separate account fund Balance at January 1, 2019 $ 20,841 Unrealized gains 1,273 Balance at December 31, 2019 $ 22,114
Schedule of Actuarial Assumptions Used	The following actuarial assumptions were used to determine the reported plan benefit obligations at December 31: Weighted-average assumptions as of Pension Benefits Post-retirement Benefits December 31, 2020 2019 2020 2019 Discount rate 2.58 % 3.32 % 2.58 % 3.32 % Rate of compensation increase 2.75 3.00 N/A N/A The following actuarial assumptions were used at January 1 to determine our reported net periodic benefit costs for the year ended December 31: Weighted-average assumptions as of Pension Benefits Post-retirement Benefits January 1, 2020 2019 2018 2020 2019 2018 Discount rate 3.32 % 4.18 % 3.65 % 3.32 % 4.18 % 3.65 % Expected long-term rate of return on plan assets 6.70 6.70 6.70 N/A N/A N/A Rate of compensation increase 3.00 3.00 3.00 N/A N/A N/A
Schedule of Health Care Cost Trend Rates	Health Care Benefits Dental Claims Years Ended December 31, 2020 2019 2020 2019 Health care cost trend rates assumed for next year 7.00 % 6.75 % 3.00 % 4.00 % Rate to which the health care trend rate is assumed to decline (ultimate trend rate) 4.50 % 4.50 % N/A N/A Year that the rate reaches the ultimate trend rate 2031 2030 N/A N/A
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	A 1.0 percent change in assumed health care cost trend rates would have the following effects: 1% Increase 1% Decrease Effect on the net periodic post-retirement health care benefit cost $ 643 $ (494) Effect on the accumulated post-retirement benefit obligation 5,520 (4,451)
Reconciliation of Benefit Obligations, Plan Assets, and Funded Status	The following table provides a reconciliation of benefit obligations, plan assets and funded status of our plans: Pension Benefits Post-retirement Benefits Years Ended December 31, 2020 2019 2020 2019 Reconciliation of benefit obligation Benefit obligation at beginning of year $ 252,374 $ 202,156 $ 31,001 $ 30,973 Service cost 10,829 7,989 1,728 1,823 Interest cost 8,266 8,320 1,014 1,274 Actuarial loss (gain) 38,920 39,598 (1,084) (1,806) Adjustment for plan amendment (32,175) — — — Benefit payments (6,470) (5,689) (993) (1,263) Benefit obligation at end of year (1) $ 271,744 $ 252,374 $ 31,666 $ 31,001 Reconciliation of fair value of plan assets Fair value of plan assets at beginning of year $ 199,466 $ 164,819 $ — $ — Actual return on plan assets 45,739 36,336 — — Employer contributions 10,000 4,000 993 1,263 Benefit payments (6,470) (5,689) (993) (1,263) Fair value of plan assets at end of year $ 248,735 $ 199,466 $ — $ — Funded status at end of year $ (23,009) $ (52,908) $ (31,666) $ (31,001) (1) For the pension plan, the benefit obligation is the projected benefit obligation. For the post-retirement benefit plan, the benefit obligation is the accumulated post-retirement benefit obligation.
Schedule of Amounts Recognized in AOCI	The following table displays the effect that the unrecognized prior service cost and unrecognized actuarial loss of our plans had on accumulated other comprehensive income ("AOCI"), as reported in the accompanying Consolidated Balance Sheets: Pension Benefits Post-retirement Benefits Years Ended December 31 2020 2019 2020 2019 Amounts recognized in AOCI Unrecognized prior service cost $ (32,175) $ — $ (20,863) $ (28,947) Unrecognized actuarial (gain) loss 66,864 64,059 6,627 8,086 Total amounts recognized in AOCI $ 34,689 $ 64,059 $ (14,236) $ (20,861)
Components of Net Periodic Benefit Cost	The components of the net periodic benefit cost for our pension and post-retirement benefit plans are as follows: Pension Plan Post-retirement Benefit Plan Years Ended December 31, 2020 2019 2018 2020 2019 2018 Net periodic benefit cost Service cost $ 10,829 $ 7,989 $ 8,701 $ 1,728 $ 1,823 $ 2,998 Interest cost 8,266 8,320 7,500 1,014 1,274 2,009 Expected return on plan assets (13,539) (10,784) (10,502) — — — Amortization of prior service cost — — — (8,084) (8,684) (5,409) Amortization of net loss 3,914 3,603 4,287 375 894 2,355 Net periodic benefit cost $ 9,470 $ 9,128 $ 9,986 $ (4,967) $ (4,693) $ 1,953
Summary of Expected Benefit Payments	The following table summarizes the expected benefits to be paid from our plans over the next 10 years: 2021 2022 2023 2024 2025 2026 - 2030 Pension benefits $ 7,330 $ 7,920 $ 8,860 $ 9,850 $ 10,970 $ 67,280 Post-retirement benefits $ 940 $ 990 $ 1,010 $ 1,050 $ 1,090 $ 6,520

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Activity in Stock Award Plans	The activity in the Stock Plan is displayed in the following table: Authorized Shares Available for Future Award Grants Year Ended December 31, 2020 From Inception to December 31, 2020 Beginning balance 834,910 1,900,000 Additional shares authorized — 1,500,000 Number of awards granted (172,478) (3,288,899) Number of awards forfeited or expired 38,248 589,579 Ending balance 700,680 700,680 Number of option awards exercised 30,900 1,474,089 Number of unrestricted stock awards granted — 10,090 Number of restricted stock awards vested 63,600 164,378 The activity in the Director Stock Plan is displayed in the following table: Authorized Shares Available for Future Award Grants Year Ended December 31, 2020 From Inception to December 31, 2020 Beginning balance 34,863 300,000 Additional authorization 150,000 150,000 Number of awards granted (24,728) (313,868) Number of awards forfeited or expired — 24,003 Ending balance 160,135 160,135 Number of option awards exercised 14,728 133,820 Number of restricted stock awards vested 14,300 98,491
Recognition of Stock-Based Compensation Expense	We expect this compensation to be recognized in subsequent years according to the following table, except with respect to awards that are accelerated by the Board of Directors, in which case we will recognize any remaining compensation expense in the period in which the awards are accelerated. 2021 $ 2,624 2022 1,107 2023 269 2024 83 2025 12 Total $ 4,095
Analysis of Award Activity	The analysis below details the option award activity for 2020 and the awards outstanding at December 31, 2020, for both of our plans and ad hoc options, which were granted prior to the adoption of the other plans: Options Shares Weighted-Average Exercise Price Weighted-Average Remaining Life (in years) Aggregate Intrinsic Value Outstanding at January 1, 2020 829,714 $ 35.39 Granted 110,470 44.08 Exercised (45,628) 21.93 Cancelled/Forfeited (1,300) 29.20 Outstanding at December 31, 2020 893,256 $ 37.16 5.16 $ 179 Exercisable at December 31, 2020 663,788 $ 34.46 4.21 $ 179
Schedule of Restricted Stock Award Activity	The analysis below details the award activity for the restricted stock and restricted stock unit awards outstanding at December 31, 2020: Restricted stock awards Shares Weighted-Average Grant Date Fair Value Non-vested at January 1, 2020 246,750 $ 43.31 Granted 101,130 37.87 Vested (77,900) 39.93 Forfeited (52,097) 41.40 Non-vested at December 31, 2020 217,883 $ 42.45
Weighted-average Grant-Date Fair Value Assumptions	The weighted-average grant-date fair value of the options granted under our plans has been estimated using the Black-Scholes option pricing model with the following weighted-average assumptions: December 31, 2020 2019 2018 Risk-free interest rate 1.4 % 2.57 % 2.79 % Expected volatility 22.26 % 26.40 % 21.79 % Expected option life (in years) 7 7 7 Expected dividends (in dollars) $ 1.32 $ 1.24 $ 1.12 Weighted-average grant-date fair value of options granted during the year (in dollars) $ 6.96 $ 12.97 $ 8.90
Summary of Stock Options Outstanding and Exercisable	The following table summarizes information regarding the stock options outstanding and exercisable at December 31, 2020: Options Outstanding Options Exercisable Range of Exercise Prices Number Outstanding (in shares) Weighted-Average Remaining Contractual Life (in years) Weighted-Average Exercise Price Number Exercisable (in shares) Weighted-Average Exercise Price $ 20.40 - 29.02 92,415 2.14 $ 23.81 87,070 $ 23.63 29.03 - 29.37 182,462 3.93 29.12 182,462 29.12 29.38 - 40.61 239,097 4.04 35.47 210,663 34.87 40.62 - 44.88 210,260 6.08 42.87 158,190 42.86 44.89 - 54.26 169,022 8.56 48.44 25,403 54.11 $ 20.40 - 54.26 893,256 5.16 $ 37.16 663,788 $ 34.46

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Reporting [Abstract]
Premiums Earned by Segments	The following table sets forth our net premiums earned: Years Ended December 31, 2020 2019 2018 Continuing Operations - Property and casualty insurance business Net premiums earned Other liability $ 316,098 $ 318,412 $ 311,931 Fire and allied lines 277,515 285,205 276,193 Automobile 324,420 345,637 313,521 Workers' compensation 75,953 87,376 95,203 Fidelity and surety 28,001 25,539 24,437 Reinsurance assumed 30,417 21,861 13,228 Other 2,678 2,942 2,938 Total net premiums earned from continuing operations $ 1,055,082 $ 1,086,972 $ 1,037,451 Discontinued Operations - Life insurance business Net premiums earned Ordinary life (excluding universal life) $ — $ — $ 7,068 Universal life policy fees — — 3,363 Immediate annuities with life contingencies — — 2,515 Accident and health — — 45 Other — — 12 Total net premiums earned from discontinued operations $ — $ — $ 13,003

QUARTERLY SUPPLEMENTARY FINAN_2

QUARTERLY SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Financial Data [Abstract]
Schedule of Unaudited Quarterly Financial Information	The following table sets forth our selected unaudited quarterly financial information: (In Thousands Except Share Data) Quarters First Second Third Fourth Total Year Ended December 31, 2020 Total revenues $ 177,805 $ 297,803 $ 282,121 $ 310,898 $ 1,068,627 Income (loss) before income taxes (104,999) 4,236 (55,228) (13,524) (169,515) Net income (loss) $ (72,534) $ 5,960 $ (37,241) $ (8,891) $ (112,706) Basic earnings (loss) per share (1) $ (2.90) $ 0.24 $ (1.49) $ (0.36) $ (4.50) Diluted earnings (loss) per share (1) (2.90) 0.24 (1.49) (0.36) (4.50) Year Ended December 31, 2019 Total revenues $ 305,539 $ 304,197 $ 298,055 $ 293,374 $ 1,201,165 Income (loss) before income taxes 54,677 (4,571) (4,528) (28,699) 16,879 Net income (loss) $ 44,521 $ (4,196) $ (2,342) $ (23,163) $ 14,820 Basic earnings (loss) per share (1) $ 1.77 $ (0.17) $ (0.09) $ (0.93) $ 0.59 Diluted earnings (loss) per share (1) 1.74 (0.17) (0.09) (0.93) 0.58 (1) The sum of the quarterly reported amounts may not equal the full year, as each is computed independently.

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings Per Share [Abstract]
Components of Basic and Diluted Earnings per Share	The components of basic and diluted earnings per share were as follows: Years Ended December 31, 2020 2019 2018 (In Thousands Except Share and Per Share Data) Basic Diluted Basic Diluted Basic Diluted Net income (loss) from continuing operations $ (112,706) $ (112,706) $ 14,820 $ 14,820 $ 2,255 $ 2,255 Weighted-average common shares outstanding 25,027,358 25,027,358 25,138,039 25,138,039 25,006,211 25,006,211 Add dilutive effect of restricted stock awards — — — 232,450 — 273,544 Add dilutive effect of stock options — — — 212,038 — 343,057 Weighted-average common shares 25,027,358 25,027,358 25,138,039 25,582,527 25,006,211 25,622,812 Earnings (loss) per common share from continuing operations $ (4.50) $ (4.50) $ 0.59 $ 0.58 $ 0.09 $ 0.09 Earnings (loss) per common share from discontinued operations — — — — (0.08) (0.07) Gain on sale of discontinued operations, net of taxes $ — $ — $ — $ — $ 1.10 $ 1.07 Earnings (loss) per common share $ (4.50) $ (4.50) $ 0.59 $ 0.58 $ 1.11 $ 1.08 Awards excluded from diluted calculation (1) — 618,379 — 63,897 — 2,681 (1) Outstanding awards that are not "in-the-money" are excluded from the diluted earnings per share calculation because the effect of including them would have been anti-dilutive.

LEASE COMMITMENTS (Tables)

LEASE COMMITMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Components of Operating Leases	The components of our operating leases were as follows: As of December 31, 2020 As of December 31, 2019 Components of lease expense: Operating lease expense $ 7,611 $ 7,655 Less sublease income 292 493 Net lease expense 7,319 7,162 Cash flows information related to leases: Operating cash outflow from operating leases 7,053 7,249
Lease Balance Sheet Information	Balance sheet information for operating leases: As of December 31, 2020 As of December 31, 2019 Operating lease right-of-use assets (Other assets on Consolidated Balance Sheets) $ 18,619 $ 15,410 Operating lease liabilities (Accrued expenses and other liabilities on Consolidated Balance Sheets) 19,244 15,851 Right-of-use assets obtained in exchange for new operating lease liabilities 7,264 651 Weighted average remaining lease term 4.36 years 2.75 years Weighted average discount rate 3.72 % 4.74 %
Maturity of Lease Liabilities	Maturities of lease liabilities: As of December 31, 2020 As of December 31, 2019 2021 $ 6,889 $ 7,517 2022 4,610 5,311 2023 3,627 2,417 2024 1,763 1,318 2025 1,270 259 Thereafter 2,460 39 Total lease payments 20,619 16,861 Less imputed interest (1,375) (1,010) Lease liability $ 19,244 $ 15,851

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
Schedule of Interest Payments	The interest rate will equal the rate that corresponds to the A.M. Best Co. (or its successor’s) financial strength rating for members of the United Fire & Casualty Pooled Group as of the applicable Interest Payment Date, as set forth in the table below. As of December 31, 2020, interest expense totaled $133. Payment of interest is subject to approval by the Iowa Insurance Division. A.M. Best Co. Financial Strength Rating Applicable Interest Rate A+ 5.875% A 6.375% A- 6.875% B++ (or lower) 7.375%

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Major Classes of Intangible Assets	Our major classes of intangible assets are presented in the following table: Year Ended December 31, 2020 2019 Agency relationships $ 10,338 $ 10,338 Accumulated amortization - agency relationships (7,307) (6,731) $ 3,031 $ 3,607 Software $ 3,260 $ 3,260 Accumulated amortization - software (3,260) (3,260) $ — $ — Trade names $ 1,978 $ 1,978 Accumulated amortization - trade names (1,286) (1,154) $ 692 $ 824 Favorable contract $ 286 $ 286 Accumulated amortization - favorable contract (286) (286) $ — $ — State insurance licenses (1) $ 3,020 $ 3,020 Net intangible assets $ 6,743 $ 7,451 (1) The intangible asset for licenses has an indefinite life and therefore is not amortized.
Schedule of Estimated Useful Lives of Amortizable Intangible Assets	The estimated useful lives assigned to our major classes of amortizable intangible assets are as follows: Useful Life Agency relationships Fifteen years Software Two years Trade names Fifteen years Favorable contract Two years
Schedule of Estimated Aggregate Amortization Expense	Our estimated aggregate amortization expense for each of the next five years is as follows: 2021 $ 709 2022 709 2023 709 2024 709 2025 709

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
Components of Accumulated Other Comprehensive Income (Loss)	The following table shows the changes in the components of our accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2020, 2019 and 2018: Liability for Net unrealized underfunded appreciation employee on investments benefit costs Total Balance as of January 1, 2018 $ 214,865 $ (46,551) $ 168,314 Cumulative effect of change in accounting principle (191,244) — (191,244) Change in accumulated other comprehensive income before reclassifications (33,564) 20,155 (13,409) Reclassification adjustments from accumulated other comprehensive income 620 5,247 5,867 Balance as of December 31, 2018 $ (9,323) $ (21,149) $ (30,472) Change in accumulated other comprehensive income before reclassifications 55,399 (16,530) 38,869 Reclassification adjustments from accumulated other comprehensive income 1,203 3,552 4,755 Balance as of December 31, 2019 $ 47,279 $ (34,127) $ 13,152 Change in accumulated other comprehensive income before reclassifications 37,173 14,580 51,753 Reclassification adjustments from accumulated other comprehensive income (1,382) 3,388 2,006 Balance as of December 31, 2020 $ 83,070 $ (16,159) $ 66,911

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	12 Months Ended
	Dec. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	Summary operating results of discontinued operations were as follows for the periods indicated: Discontinued Operations Statements of Income For the Years Ended December 31, (In Thousands, Except Share Data) 2020 2019 2018 Revenues Net premiums earned $ — $ — $ 13,003 Investment income, net of investment expenses — — 12,663 Total net realized investment gains (losses) — — (1,057) Other income — — 146 Total revenues $ — $ — $ 24,755 Benefits, Losses and Expenses Losses and loss settlement expenses $ — $ — $ 10,823 Increase in liability for future policy benefits — — 5,023 Amortization of deferred policy acquisition costs — — 1,895 Other underwriting expenses — — 3,864 Interest on policyholders’ accounts — — 4,499 Total benefits, losses and expenses $ — $ — $ 26,104 Income (loss) from discontinued operations before income taxes $ — $ — $ (1,349) Federal income tax expense — — 563 Net income (loss) from discontinued operations $ — $ — $ (1,912) Earnings (loss) per common share from discontinued operations: Basic $ — $ — $ (0.08) Diluted — — (0.07)

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)	Mar. 27, 2020USD ($)	Sep. 18, 2017segment	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)segmentstateplan	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Jan. 01, 2021USD ($)	Dec. 15, 2020USD ($)	Dec. 31, 2017USD ($)
Item Effected [Line Items]
Number of operating segments | segment		2		1
Percentage of the gains and profits from the Lloyds plan available to United Fire & Indemnity Company				100.00%
Securities on deposit as required by law				$ 21,628,000	$ 20,816,000
Payment for income taxes				138,000	1,575,000	$ 29,071,000
Federal tax refund received				0	5,401,000	1,503,000
Interest payment				0	0	0
Depreciation expense				5,947,000	10,482,000	4,455,000
Goodwill impairment			$ 15,091,000	15,091,000	0	0
Income tax benefit, CARES Act	$ 18,600,000
Unrecognized tax benefit				0	0	0
Assets				$ 3,069,678,000	3,013,472,000
Number of equity compensation plans | plan				2
Investment income accrual period				6 months
Credit loss allowance for reinsurance receivables				$ 190,000	0		$ 38,000
Cumulative effect adjustment				825,149,000	910,472,000	888,375,000			$ 973,373,000
Retaining earnings
Item Effected [Line Items]
Cumulative effect adjustment				555,854,000	697,116,000	715,472,000			608,700,000
Cumulative effect of change in accounting principle
Item Effected [Line Items]
Cumulative effect adjustment					(30,000)	(514,000)			0
Cumulative effect of change in accounting principle | Retaining earnings
Item Effected [Line Items]
Cumulative effect adjustment					(30,000)	(514,000)			$ 191,244,000
Post-retirement Benefits
Item Effected [Line Items]
Benefit obligation				31,666,000	31,001,000	30,973,000
Variable Interest Entity, Not Primary Beneficiary
Item Effected [Line Items]
Assets				3,300,000
Surplus Notes
Item Effected [Line Items]
Principal amount								$ 50,000,000
Debt issuance costs				24,000
Interest expense incurred				133,000
Surplus Notes | Federated Mutual
Item Effected [Line Items]
Principal amount				35,000,000
Surplus Notes | Federated Life
Item Effected [Line Items]
Principal amount				$ 15,000,000
Minimum
Item Effected [Line Items]
Useful life				2 years
Maximum
Item Effected [Line Items]
Useful life				15 years
Property and casualty business
Item Effected [Line Items]
Number of states in which we are licensed as insurer | state				49
Amortization expense				$ 709,000	$ 709,000	$ 719,000

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Deferred Policy Acquisition Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Recorded asset at beginning of year	$ 94,292
Change in "shadow" deferred policy acquisition costs	0	$ 0	$ 7,274
Recorded asset at end of year	87,094	94,292
Continuing and Discontinuing Operations
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Recorded asset at beginning of year	94,292	92,796	159,253
Underwriting costs deferred	203,054	218,195	212,302
Amortization of deferred policy acquisition costs	(210,252)	(216,699)	(208,127)
Ending unamortized deferred policy acquisition costs	87,094	94,292	163,428
Change in "shadow" deferred policy acquisition costs	0	0	7,274
Sale of discontinued operations	0	0	(77,906)
Recorded asset at end of year	87,094	94,292	92,796
Property and casualty business
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Recorded asset at beginning of year	94,292	92,796	88,102
Underwriting costs deferred	203,054	218,195	210,926
Amortization of deferred policy acquisition costs	(210,252)	(216,699)	(206,232)
Recorded asset at end of year	87,094	94,292	92,796
Life Insurance | Discontinued Operations
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Recorded asset at beginning of year	0	0	71,151
Underwriting costs deferred	0	0	1,376
Amortization of deferred policy acquisition costs	0	0	(1,895)
Ending unamortized deferred policy acquisition costs	0	0	70,632
Change in "shadow" deferred policy acquisition costs	0	0	7,274
Sale of discontinued operations	0	0	(77,906)
Recorded asset at end of year	$ 0	$ 0	$ 0

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Property and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 129,874	$ 116,989
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	2,974	2,982
Buildings
Property, Plant and Equipment [Line Items]
Total property and equipment	85,776	83,360
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	6,058	7,253
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	35,066	23,394
Airplane
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 0	$ 0

SUMMARY OF SIGNIFICANT ACCOUN_7

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Useful Life) (Details)	12 Months Ended
	Dec. 31, 2020
Computer equipment and software
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Life	7 years
Airplane
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Real estate | Minimum
Property, Plant and Equipment [Line Items]
Useful Life	7 years
Real estate | Maximum
Property, Plant and Equipment [Line Items]
Useful Life	39 years

SUMMARY OF SIGNIFICANT ACCOUN_8

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Rollforward of Credit Loss Allowance for Reinsurance Receivable) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Reinsurance Recoverable, Allowance for Credit Loss [Roll Forward]
Beginning balance, January 1, 2020	$ 0
Current-period provision for expected credit losses	152
Write-off charged against the allowance, if any	0
Recoveries of amounts previously written off, if any	0
Ending balance of the allowance for reinsurance receivable, December 31, 2020	$ 190

SUMMARY OF INVESTMENTS (Fair Va

SUMMARY OF INVESTMENTS (Fair Value of Investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
AVAILABLE-FOR-SALE
Cost or Amortized Cost	$ 1,720,291	$ 1,659,760
Fair Value	1,825,438	1,719,607
Allowance for Credit Losses	5	0
Fixed maturities
AVAILABLE-FOR-SALE
Cost or Amortized Cost	1,720,291	1,659,760
Gross Unrealized Appreciation	107,003	60,639
Gross Unrealized Depreciation	1,851	792
Fair Value	1,825,443	1,719,607
Allowance for Credit Losses	5
U.S. Treasury
AVAILABLE-FOR-SALE
Cost or Amortized Cost	149,481	69,300
Gross Unrealized Appreciation	482	203
Gross Unrealized Depreciation	25	12
Fair Value	149,938	69,491
Allowance for Credit Losses	0
U.S. government agency
AVAILABLE-FOR-SALE
Cost or Amortized Cost	60,502	97,962
Gross Unrealized Appreciation	4,016	2,344
Gross Unrealized Depreciation	0	104
Fair Value	64,518	100,202
Allowance for Credit Losses	0
General obligations | Midwest
AVAILABLE-FOR-SALE
Cost or Amortized Cost	77,933	85,607
Gross Unrealized Appreciation	4,047	2,987
Gross Unrealized Depreciation	0	0
Fair Value	81,980	88,594
Allowance for Credit Losses	0
General obligations | Northeast
AVAILABLE-FOR-SALE
Cost or Amortized Cost	29,071	30,120
Gross Unrealized Appreciation	1,379	1,150
Gross Unrealized Depreciation	0	0
Fair Value	30,450	31,270
Allowance for Credit Losses	0
General obligations | South
AVAILABLE-FOR-SALE
Cost or Amortized Cost	104,522	111,688
Gross Unrealized Appreciation	5,448	3,515
Gross Unrealized Depreciation	0	0
Fair Value	109,970	115,203
Allowance for Credit Losses	0
General obligations | West
AVAILABLE-FOR-SALE
Cost or Amortized Cost	102,590	105,569
Gross Unrealized Appreciation	7,431	4,748
Gross Unrealized Depreciation	0	0
Fair Value	110,021	110,317
Allowance for Credit Losses	0
Special revenue | Midwest
AVAILABLE-FOR-SALE
Cost or Amortized Cost	115,956	133,717
Gross Unrealized Appreciation	9,142	6,175
Gross Unrealized Depreciation	0	0
Fair Value	125,098	139,892
Allowance for Credit Losses	0
Special revenue | Northeast
AVAILABLE-FOR-SALE
Cost or Amortized Cost	56,317	58,665
Gross Unrealized Appreciation	4,759	2,878
Gross Unrealized Depreciation	0	0
Fair Value	61,076	61,543
Allowance for Credit Losses	0
Special revenue | South
AVAILABLE-FOR-SALE
Cost or Amortized Cost	208,739	224,214
Gross Unrealized Appreciation	17,967	10,452
Gross Unrealized Depreciation	0	0
Fair Value	226,706	234,666
Allowance for Credit Losses	0
Special revenue | West
AVAILABLE-FOR-SALE
Cost or Amortized Cost	129,417	138,557
Gross Unrealized Appreciation	9,982	6,287
Gross Unrealized Depreciation	0	0
Fair Value	139,399	144,844
Allowance for Credit Losses	0
Foreign bonds
AVAILABLE-FOR-SALE
Cost or Amortized Cost	27,799	4,936
Gross Unrealized Appreciation	1,805	181
Gross Unrealized Depreciation	2	0
Fair Value	29,602	5,117
Allowance for Credit Losses	0
Public utilities
AVAILABLE-FOR-SALE
Cost or Amortized Cost	76,114	60,950
Gross Unrealized Appreciation	7,388	2,701
Gross Unrealized Depreciation	0	0
Fair Value	83,502	63,651
Allowance for Credit Losses	0
Corporate bonds | Energy
AVAILABLE-FOR-SALE
Cost or Amortized Cost	22,441	28,695
Gross Unrealized Appreciation	2,895	1,429
Gross Unrealized Depreciation	0	0
Fair Value	25,336	30,124
Allowance for Credit Losses	0
Corporate bonds | Industrials
AVAILABLE-FOR-SALE
Cost or Amortized Cost	39,513	52,249
Gross Unrealized Appreciation	3,744	1,766
Gross Unrealized Depreciation	0	0
Fair Value	43,257	54,015
Allowance for Credit Losses	0
Corporate bonds | Consumer goods and services
AVAILABLE-FOR-SALE
Cost or Amortized Cost	46,521	47,131
Gross Unrealized Appreciation	4,046	2,335
Gross Unrealized Depreciation	0	0
Fair Value	50,567	49,466
Allowance for Credit Losses	0
Corporate bonds | Health care
AVAILABLE-FOR-SALE
Cost or Amortized Cost	6,678	8,998
Gross Unrealized Appreciation	898	482
Gross Unrealized Depreciation	0	0
Fair Value	7,576	9,480
Allowance for Credit Losses	0
Corporate bonds | Technology, media and telecommunications
AVAILABLE-FOR-SALE
Cost or Amortized Cost	37,270	25,931
Gross Unrealized Appreciation	4,381	1,739
Gross Unrealized Depreciation	15	0
Fair Value	41,636	27,670
Allowance for Credit Losses	0
Corporate bonds | Financial services
AVAILABLE-FOR-SALE
Cost or Amortized Cost	93,736	96,613
Gross Unrealized Appreciation	7,564	3,870
Gross Unrealized Depreciation	269	230
Fair Value	101,031	100,253
Allowance for Credit Losses	5
Mortgage-backed securities
AVAILABLE-FOR-SALE
Cost or Amortized Cost	20,305	6,250
Gross Unrealized Appreciation	326	127
Gross Unrealized Depreciation	54	21
Fair Value	20,577	6,356
Allowance for Credit Losses	0
Collateralized mortgage obligations | Government national mortgage association
AVAILABLE-FOR-SALE
Cost or Amortized Cost	81,758	78,400
Gross Unrealized Appreciation	4,439	2,053
Gross Unrealized Depreciation	45	97
Fair Value	86,152	80,356
Allowance for Credit Losses	0
Collateralized mortgage obligations | Federal home loan mortgage corporation
AVAILABLE-FOR-SALE
Cost or Amortized Cost	151,362	123,572
Gross Unrealized Appreciation	2,239	1,150
Gross Unrealized Depreciation	758	220
Fair Value	152,843	124,502
Allowance for Credit Losses	0
Collateralized mortgage obligations | Federal national mortgage association
AVAILABLE-FOR-SALE
Cost or Amortized Cost	81,952	70,322
Gross Unrealized Appreciation	2,013	1,631
Gross Unrealized Depreciation	683	108
Fair Value	83,282	71,845
Allowance for Credit Losses	0
Asset-backed securities
AVAILABLE-FOR-SALE
Cost or Amortized Cost	314	314
Gross Unrealized Appreciation	612	436
Gross Unrealized Depreciation	0	0
Fair Value	926	$ 750
Allowance for Credit Losses	0
Carrying Value | Fixed maturities
AVAILABLE-FOR-SALE
Fair Value	1,825,438
Carrying Value | U.S. Treasury
AVAILABLE-FOR-SALE
Fair Value	149,938
Carrying Value | U.S. government agency
AVAILABLE-FOR-SALE
Fair Value	64,518
Carrying Value | General obligations | Midwest
AVAILABLE-FOR-SALE
Fair Value	81,980
Carrying Value | General obligations | Northeast
AVAILABLE-FOR-SALE
Fair Value	30,450
Carrying Value | General obligations | South
AVAILABLE-FOR-SALE
Fair Value	109,970
Carrying Value | General obligations | West
AVAILABLE-FOR-SALE
Fair Value	110,021
Carrying Value | Special revenue | Midwest
AVAILABLE-FOR-SALE
Fair Value	125,098
Carrying Value | Special revenue | Northeast
AVAILABLE-FOR-SALE
Fair Value	61,076
Carrying Value | Special revenue | South
AVAILABLE-FOR-SALE
Fair Value	226,706
Carrying Value | Special revenue | West
AVAILABLE-FOR-SALE
Fair Value	139,399
Carrying Value | Foreign bonds
AVAILABLE-FOR-SALE
Fair Value	29,602
Carrying Value | Public utilities
AVAILABLE-FOR-SALE
Fair Value	83,502
Carrying Value | Corporate bonds | Energy
AVAILABLE-FOR-SALE
Fair Value	25,336
Carrying Value | Corporate bonds | Industrials
AVAILABLE-FOR-SALE
Fair Value	43,257
Carrying Value | Corporate bonds | Consumer goods and services
AVAILABLE-FOR-SALE
Fair Value	50,567
Carrying Value | Corporate bonds | Health care
AVAILABLE-FOR-SALE
Fair Value	7,576
Carrying Value | Corporate bonds | Technology, media and telecommunications
AVAILABLE-FOR-SALE
Fair Value	41,636
Carrying Value | Corporate bonds | Financial services
AVAILABLE-FOR-SALE
Fair Value	101,026
Carrying Value | Mortgage-backed securities
AVAILABLE-FOR-SALE
Fair Value	20,577
Carrying Value | Collateralized mortgage obligations | Government national mortgage association
AVAILABLE-FOR-SALE
Fair Value	86,152
Carrying Value | Collateralized mortgage obligations | Federal home loan mortgage corporation
AVAILABLE-FOR-SALE
Fair Value	152,843
Carrying Value | Collateralized mortgage obligations | Federal national mortgage association
AVAILABLE-FOR-SALE
Fair Value	83,282
Carrying Value | Asset-backed securities
AVAILABLE-FOR-SALE
Fair Value	$ 926

SUMMARY OF INVESTMENTS (Maturit

SUMMARY OF INVESTMENTS (Maturities) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Available-For-Sale, Amortized Cost
Due in one year or less	$ 32,214
Due after one year through five years	476,667
Due after five years through 10 years	400,277
Due after 10 years	475,442
Available-For-Sale, Fair Value
Due in one year or less	32,467
Due after one year through five years	502,699
Due after five years through 10 years	431,271
Due after 10 years	515,226
Fixed maturities
Available-For-Sale, Amortized Cost
Securities not categorized by contractual maturity	1,720,291
Available-For-Sale, Fair Value
Securities not categorized by contractual maturity	1,825,443
Asset-backed securities
Available-For-Sale, Amortized Cost
Securities not categorized by contractual maturity	314
Available-For-Sale, Fair Value
Securities not categorized by contractual maturity	926
Mortgage-backed securities
Available-For-Sale, Amortized Cost
Securities not categorized by contractual maturity	20,305
Available-For-Sale, Fair Value
Securities not categorized by contractual maturity	20,577
Collateralized mortgage obligations
Available-For-Sale, Amortized Cost
Securities not categorized by contractual maturity	315,072
Available-For-Sale, Fair Value
Securities not categorized by contractual maturity	$ 322,277

SUMMARY OF INVESTMENTS (Net Rea

SUMMARY OF INVESTMENTS (Net Realized Investment Gains and Losses) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	$ (32,395,000)	$ 53,779,000	$ (20,179,000)
AVAILABLE-FOR-SALE
Proceeds from sales	50,744,000	41,760,000	132,250,000
Gross realized gains	1,400,000	302,000	140,000
Gross realized losses	(495,000)	(13,000)	(517,000)
Continuing Operations
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(32,395,000)	53,779,000	(20,179,000)
Discontinued Operations
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	0	0	(1,057,000)
AVAILABLE-FOR-SALE
Proceeds from sales	0	0	0
Continuing and Discontinued Operations
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(32,395,000)	53,779,000	(21,236,000)
Fixed maturities | Available-for-sale
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	1,787,000	655,000	(254,000)
Fixed maturities | Allowance for credit losses
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(5,000)	0	0
Fixed maturities | Change in fair value
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(3,314,000)	1,351,000	(296,000)
Fixed maturities | Sales
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	2,950,000	1,993,000	1,226,000
Equity securities | Change in fair value
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(6,875,000)	51,231,000	(21,994,000)
Equity securities | Sales
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(26,906,000)	725,000	1,702,000
Mortgage loans on real estate
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	(4,000)	(26,000)	(46,000)
Real Estate
Gain (Loss) on Securities [Line Items]
Net realized investment gains (losses) from continuing operations	$ (28,000)	$ (2,150,000)	$ (517,000)

SUMMARY OF INVESTMENTS (Narrati

SUMMARY OF INVESTMENTS (Narrative) (Details)	1 Months Ended	12 Months Ended
	Dec. 31, 2019USD ($)date	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Gain (Loss) on Securities [Line Items]
Proceeds from sale of available-for-sale investments		$ 50,744,000	$ 41,760,000	$ 132,250,000
Gross realized gains (losses)			0	0
Trading securities	$ 15,256,000	0	15,256,000
Remaining potential contractual obligation		8,484,000
Investment in limited liability partnership investment fund	$ 25,000,000
Lockup period	3 years
Minimum notice period	60 days
Number of possible repurchase dates | date	4
Investment fair value		24,867,000
Discontinued Operations
Gain (Loss) on Securities [Line Items]
Proceeds from sale of available-for-sale investments		0	$ 0	$ 0
Gross realized gains (losses)		$ 0

SUMMARY OF INVESTMENTS (Net Inv

SUMMARY OF INVESTMENTS (Net Investment Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Other	$ 205	$ 252	$ 307
Total investment income from continuing operations	48,127	67,395	60,554
Less investment expenses	8,457	6,981	7,660
Net investment income from continuing operations	39,670	60,414	65,557
Continuing Operations
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Net investment income from continuing operations	39,670	60,414	52,894
Discontinued Operations
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Net investment income from continuing operations	0	0	12,663
Fixed Maturities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest income	46,478	50,274	51,356
Equity securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Dividends on equity securities	6,368	7,842	7,731
Other long-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest income	1,890	3,115	8,383
Other long-term investments | Change in Value
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Other	(9,633)	1,114	(10,116)
Mortgage-backed securities
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest income	1,949	1,595	412
Short-term investments
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest income	107	522	606
Cash and cash equivalents
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Interest income	$ 763	$ 2,681	$ 1,875

SUMMARY OF INVESTMENTS (Rollfor

SUMMARY OF INVESTMENTS (Rollforward of Allowance for Credit Losses for Available-for-Sale Fixed Maturity Securities) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning balance, January 1, 2020	$ 0
Additions to the allowance for credit losses for which credit losses were not previously recorded	5
Reductions for securities sold during the period (realized)	0
Writeoffs charged against the allowance	0
Recoveries of amounts previously written off	0
Ending balance, December 31, 2020	$ 5

SUMMARY OF INVESTMENTS (Unreali

SUMMARY OF INVESTMENTS (Unrealized Appreciation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Change in net unrealized investment appreciation
Available-for-sale fixed maturities	$ 45,305	$ 71,648	$ (57,475)
Deferred policy acquisition costs	0	0	7,274
Income tax effect	(9,514)	(15,046)	10,543
Cumulative change in accounting principles	0	0	(191,244)
Net unrealized investment depreciation of discontinued operations, sold	0	0	6,714
Total change in net unrealized investment appreciation (depreciation), net of tax	$ 35,791	$ 56,602	$ (224,188)

SUMMARY OF INVESTMENTS (Investm

SUMMARY OF INVESTMENTS (Investments in Unrealized Loss Position) (Details) $ in Thousands	Dec. 31, 2020USD ($)issue	Dec. 31, 2019USD ($)issue
Fixed maturities
Number of Issues
Fixed maturities, less than 12 months | issue	46	24
Fixed maturities, 12 months or longer | issue	8	27
Fair Value
Fixed maturities, less than 12 months	$ 256,247	$ 107,540
Fixed maturities, 12 months or longer	3,168	20,230
Fixed maturities, total	259,415	127,770
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	1,586	557
Fixed maturities, 12 months or longer	8	235
Fixed maturities, total	$ 1,594	$ 792
U.S. Treasury
Number of Issues
Fixed maturities, less than 12 months | issue	5	0
Fixed maturities, 12 months or longer | issue	0	2
Fair Value
Fixed maturities, less than 12 months	$ 86,371	$ 0
Fixed maturities, 12 months or longer	0	4,733
Fixed maturities, total	86,371	4,733
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	25	0
Fixed maturities, 12 months or longer	0	12
Fixed maturities, total	$ 25	$ 12
U.S. government agency
Number of Issues
Fixed maturities, less than 12 months | issue		3
Fixed maturities, 12 months or longer | issue		0
Fair Value
Fixed maturities, less than 12 months		$ 13,846
Fixed maturities, 12 months or longer		0
Fixed maturities, total		13,846
Gross Unrealized Depreciation
Fixed maturities, less than 12 months		104
Fixed maturities, 12 months or longer		0
Fixed maturities, total		$ 104
Foreign bonds
Number of Issues
Fixed maturities, less than 12 months | issue	1
Fixed maturities, 12 months or longer | issue	0
Fair Value
Fixed maturities, less than 12 months	$ 2,000
Fixed maturities, 12 months or longer	0
Fixed maturities, total	2,000
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	2
Fixed maturities, 12 months or longer	0
Fixed maturities, total	$ 2
Corporate bonds | Technology, media and telecommunications
Number of Issues
Fixed maturities, less than 12 months | issue	1
Fixed maturities, 12 months or longer | issue	0
Fair Value
Fixed maturities, less than 12 months	$ 2,020
Fixed maturities, 12 months or longer	0
Fixed maturities, total	2,020
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	15
Fixed maturities, 12 months or longer	0
Fixed maturities, total	$ 15
Corporate bonds | Financial services
Number of Issues
Fixed maturities, less than 12 months | issue	1	3
Fixed maturities, 12 months or longer | issue	1	1
Fair Value
Fixed maturities, less than 12 months	$ 2,995	$ 10,906
Fixed maturities, 12 months or longer	3,000	4,913
Fixed maturities, total	5,995	15,819
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	5	142
Fixed maturities, 12 months or longer	7	88
Fixed maturities, total	$ 12	$ 230
Mortgage-backed securities
Number of Issues
Fixed maturities, less than 12 months | issue	2	0
Fixed maturities, 12 months or longer | issue	5	13
Fair Value
Fixed maturities, less than 12 months	$ 8,099	$ 0
Fixed maturities, 12 months or longer	118	1,585
Fixed maturities, total	8,217	1,585
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	53	0
Fixed maturities, 12 months or longer	1	21
Fixed maturities, total	$ 54	$ 21
Collateralized mortgage obligations | Government national mortgage association
Number of Issues
Fixed maturities, less than 12 months | issue	2	2
Fixed maturities, 12 months or longer | issue	1	5
Fair Value
Fixed maturities, less than 12 months	$ 12,394	$ 8,444
Fixed maturities, 12 months or longer	24	3,053
Fixed maturities, total	12,418	11,497
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	45	38
Fixed maturities, 12 months or longer	0	59
Fixed maturities, total	$ 45	$ 97
Collateralized mortgage obligations | Federal home loan mortgage corporation
Number of Issues
Fixed maturities, less than 12 months | issue	24	12
Fixed maturities, 12 months or longer | issue	1	3
Fair Value
Fixed maturities, less than 12 months	$ 97,691	$ 50,829
Fixed maturities, 12 months or longer	26	4,844
Fixed maturities, total	97,717	55,673
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	758	183
Fixed maturities, 12 months or longer	0	37
Fixed maturities, total	$ 758	$ 220
Collateralized mortgage obligations | Federal national mortgage association
Number of Issues
Fixed maturities, less than 12 months | issue	10	4
Fixed maturities, 12 months or longer | issue	0	3
Fair Value
Fixed maturities, less than 12 months	$ 44,677	$ 23,515
Fixed maturities, 12 months or longer	0	1,102
Fixed maturities, total	44,677	24,617
Gross Unrealized Depreciation
Fixed maturities, less than 12 months	683	90
Fixed maturities, 12 months or longer	0	18
Fixed maturities, total	$ 683	$ 108

FAIR VALUE OF FINANCIAL INSTR_3

FAIR VALUE OF FINANCIAL INSTRUMENTS (Narrative) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accrued interest excluded from carrying value	$ 168
Other Assets | Rabbi Trust | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value	$ 8,557

FAIR VALUE OF FINANCIAL INSTR_4

FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Value and Estimated Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investments
Available-for-sale securities	$ 1,825,438	$ 1,719,607
Trading securities	0	15,256
Equity securities	206,685	299,203
Fair Value
Investments
Equity securities	206,685	299,203
Mortgage loans	48,932	43,992
Other long-term investments	69,305	78,410
Short-term investments	175	175
Cash and cash equivalents	87,948	120,722
Corporate-owned life insurance	8,557	6,777
Liabilities
Long term debt	50,000	0
Fair Value | Fixed maturities:
Investments
Available-for-sale securities	1,825,443	1,719,607
Trading securities	0	15,256
Carrying Value
Investments
Equity securities	206,685	299,203
Mortgage loans	47,614	42,448
Other long-term investments	69,305	78,410
Short-term investments	175	175
Cash and cash equivalents	87,948	120,722
Corporate-owned life insurance	8,557	6,777
Liabilities
Long term debt	50,000	0
Carrying Value | Fixed maturities:
Investments
Available-for-sale securities	1,825,438	1,719,607
Trading securities	$ 0	$ 15,256

FAIR VALUE OF FINANCIAL INSTR_5

FAIR VALUE OF FINANCIAL INSTRUMENTS (Financial Instruments Measured at Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	$ 1,825,438	$ 1,719,607
Trading and Equity Securities	0	15,256
U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	149,938	69,491
U.S. government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	64,518	100,202
Foreign bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	29,602	5,117
Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	83,502	63,651
Corporate bonds | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	25,336	30,124
Corporate bonds | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	43,257	54,015
Corporate bonds | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	50,567	49,466
Corporate bonds | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	7,576	9,480
Corporate bonds | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	41,636	27,670
Corporate bonds | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	101,031	100,253
Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	20,577	6,356
Collateralized mortgage obligations | Government national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	86,152	80,356
Collateralized mortgage obligations | Federal home loan mortgage corporation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	152,843	124,502
Collateralized mortgage obligations | Federal national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	83,282	71,845
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	926	750
Fixed maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	1,825,443	1,719,607
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	206,685	15,256
Short-Term Investments	175	175
Money Market Accounts	24,790	9,334
Corporate-Owned Life Insurance	8,557	6,777
Total Assets Measured at Fair Value	2,065,650	2,050,352
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	206,090	4,087
Short-Term Investments	175	175
Money Market Accounts	24,790	9,334
Corporate-Owned Life Insurance	8,557	0
Total Assets Measured at Fair Value	239,612	312,204
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	11,169
Short-Term Investments	0	0
Money Market Accounts	0	0
Corporate-Owned Life Insurance		6,777
Total Assets Measured at Fair Value	1,824,267	1,736,553
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	595	0
Short-Term Investments	0	0
Money Market Accounts	0	0
Corporate-Owned Life Insurance	0	0
Total Assets Measured at Fair Value	1,771	1,595
Recurring | U.S. Treasury
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	149,938	69,491
Recurring | U.S. Treasury | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | U.S. Treasury | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	149,938	69,491
Recurring | U.S. Treasury | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | U.S. government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	64,518	100,202
Recurring | U.S. government agency | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | U.S. government agency | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	64,518	100,202
Recurring | U.S. government agency | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | General obligations | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	81,980	88,594
Recurring | States, municipalities and political subdivisions | General obligations | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	30,450	31,270
Recurring | States, municipalities and political subdivisions | General obligations | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	109,970	115,203
Recurring | States, municipalities and political subdivisions | General obligations | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	110,021	110,317
Recurring | States, municipalities and political subdivisions | Special revenue | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	125,098	139,892
Recurring | States, municipalities and political subdivisions | Special revenue | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	61,076	61,543
Recurring | States, municipalities and political subdivisions | Special revenue | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	226,706	234,666
Recurring | States, municipalities and political subdivisions | Special revenue | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	139,399	144,844
Recurring | States, municipalities and political subdivisions | Level 1 | General obligations | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | General obligations | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | General obligations | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | General obligations | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | Special revenue | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | Special revenue | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | Special revenue | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 1 | Special revenue | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 2 | General obligations | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	81,980	88,594
Recurring | States, municipalities and political subdivisions | Level 2 | General obligations | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	30,450	31,270
Recurring | States, municipalities and political subdivisions | Level 2 | General obligations | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	109,970	115,203
Recurring | States, municipalities and political subdivisions | Level 2 | General obligations | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	110,021	110,317
Recurring | States, municipalities and political subdivisions | Level 2 | Special revenue | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	125,098	139,892
Recurring | States, municipalities and political subdivisions | Level 2 | Special revenue | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	61,076	61,543
Recurring | States, municipalities and political subdivisions | Level 2 | Special revenue | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	226,706	234,666
Recurring | States, municipalities and political subdivisions | Level 2 | Special revenue | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	139,399	144,844
Recurring | States, municipalities and political subdivisions | Level 3 | General obligations | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | General obligations | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | General obligations | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | General obligations | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | Special revenue | Midwest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | Special revenue | Northeast
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | Special revenue | South
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | States, municipalities and political subdivisions | Level 3 | Special revenue | West
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Foreign bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	29,602	5,117
Recurring | Foreign bonds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Foreign bonds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	29,602	5,117
Recurring | Foreign bonds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	83,502
Recurring | Public utilities | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)		63,651
Recurring | Public utilities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0
Recurring | Public utilities | Level 1 | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)		0
Recurring | Public utilities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	83,502
Recurring | Public utilities | Level 2 | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)		63,651
Recurring | Public utilities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0
Recurring | Public utilities | Level 3 | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)		0
Recurring | Corporate bonds | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	25,336	30,124
Recurring | Corporate bonds | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	43,257	54,015
Recurring | Corporate bonds | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	50,567	49,466
Trading and Equity Securities		2,276
Recurring | Corporate bonds | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	7,576	9,480
Trading and Equity Securities		4,701
Recurring | Corporate bonds | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	41,636	27,670
Trading and Equity Securities		1,732
Recurring | Corporate bonds | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	101,031	100,253
Trading and Equity Securities		2,460
Recurring | Corporate bonds | Level 1 | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Corporate bonds | Level 1 | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Corporate bonds | Level 1 | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 1 | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 1 | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 1 | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 2 | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	25,336	30,124
Recurring | Corporate bonds | Level 2 | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	43,257	54,015
Recurring | Corporate bonds | Level 2 | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	50,567	49,466
Trading and Equity Securities		2,276
Recurring | Corporate bonds | Level 2 | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	7,576	9,480
Trading and Equity Securities		4,701
Recurring | Corporate bonds | Level 2 | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	41,636	27,670
Trading and Equity Securities		1,732
Recurring | Corporate bonds | Level 2 | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	100,781	100,003
Trading and Equity Securities		2,460
Recurring | Corporate bonds | Level 3 | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Corporate bonds | Level 3 | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Corporate bonds | Level 3 | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 3 | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 3 | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Trading and Equity Securities		0
Recurring | Corporate bonds | Level 3 | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	250	250
Trading and Equity Securities		0
Recurring | Mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	20,577	6,356
Recurring | Mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	20,577	6,356
Recurring | Mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Collateralized mortgage obligations | Government national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	86,152	80,356
Recurring | Collateralized mortgage obligations | Federal home loan mortgage corporation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	152,843	124,502
Recurring | Collateralized mortgage obligations | Federal national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	83,282	71,845
Recurring | Collateralized mortgage obligations | Level 1 | Government national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Collateralized mortgage obligations | Level 1 | Federal home loan mortgage corporation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Collateralized mortgage obligations | Level 1 | Federal national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Collateralized mortgage obligations | Level 2 | Government national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	86,152	80,356
Recurring | Collateralized mortgage obligations | Level 2 | Federal home loan mortgage corporation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	152,843	124,502
Recurring | Collateralized mortgage obligations | Level 2 | Federal national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	83,282	71,845
Recurring | Collateralized mortgage obligations | Level 3 | Government national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Collateralized mortgage obligations | Level 3 | Federal home loan mortgage corporation
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Collateralized mortgage obligations | Level 3 | Federal national mortgage association
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	926	750
Recurring | Asset-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Asset-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)		0
Recurring | Asset-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	926	750
Recurring | Fixed maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	1,825,443	1,719,607
Recurring | Fixed maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	0	0
Recurring | Fixed maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	1,824,267	1,718,607
Recurring | Fixed maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	1,176	1,000
Recurring | Redeemable preferred stocks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		4,087
Recurring | Redeemable preferred stocks | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		4,087
Recurring | Redeemable preferred stocks | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		0
Recurring | Redeemable preferred stocks | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		0
Recurring | Equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		299,203
Recurring | Equity securities | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	16,320	16,295
Recurring | Equity securities | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	9,918	14,639
Recurring | Equity securities | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	36,556	57,330
Recurring | Equity securities | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	32,061	29,935
Recurring | Equity securities | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	24,549	27,285
Recurring | Equity securities | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	17,109	127,780
Recurring | Equity securities | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	69,577	19,265
Recurring | Equity securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		298,608
Recurring | Equity securities | Level 1 | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	16,320	16,295
Recurring | Equity securities | Level 1 | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	9,918	14,639
Recurring | Equity securities | Level 1 | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	36,556	57,330
Recurring | Equity securities | Level 1 | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	32,061	29,935
Recurring | Equity securities | Level 1 | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	24,549	27,285
Recurring | Equity securities | Level 1 | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	17,109	127,780
Recurring | Equity securities | Level 1 | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	69,577	19,265
Recurring | Equity securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		0
Recurring | Equity securities | Level 2 | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 2 | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 2 | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 2 | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 2 | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 2 | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 2 | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		595
Recurring | Equity securities | Level 3 | Public utilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3 | Energy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3 | Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3 | Consumer goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3 | Health care
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3 | Technology, media and telecommunications
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Equity securities | Level 3 | Financial services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Nonredeemable preferred stocks
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	595	6,674
Recurring | Nonredeemable preferred stocks | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities		6,079
Recurring | Nonredeemable preferred stocks | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	0	0
Recurring | Nonredeemable preferred stocks | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading and Equity Securities	$ 595	$ 595

FAIR VALUE OF FINANCIAL INSTR_6

FAIR VALUE OF FINANCIAL INSTRUMENTS (Quantitative Information About Level 3 Fair Value Measurements) (Details) $ in Thousands	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Nonredeemable preferred stocks	$ 206,685	$ 299,203
Recurring | Continuing Operations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed Maturities asset-backed securities	1,771	1,595
Recurring | Corporate bonds | Continuing Operations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed Maturities asset-backed securities	250	250
Recurring | Asset-backed securities | Continuing Operations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed Maturities asset-backed securities	926	$ 750
Recurring | Level 3 | Asset-backed securities | Continuing Operations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed Maturities asset-backed securities	$ 926
Recurring | Level 3 | Asset-backed securities | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale securities, range of weighted average significant unobservable inputs	0.04
Recurring | Level 3 | Asset-backed securities | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Available-for-sale securities, range of weighted average significant unobservable inputs	0.06
Recurring | Level 3 | Nonredeemable preferred stocks | Continuing Operations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed Maturities asset-backed securities	$ 595
Recurring | Level 3 | Nonredeemable preferred stocks | Discounted cash flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Nonredeemable preferred stocks, range of weighted average significant unobservable inputs	0.03
Recurring | Level 3 | Nonredeemable preferred stocks | Discounted cash flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Nonredeemable preferred stocks, range of weighted average significant unobservable inputs	0.04
Recurring | Level 3 | Financial services | Corporate bonds | Continuing Operations
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fixed Maturities asset-backed securities	$ 250

FAIR VALUE OF FINANCIAL INSTR_7

FAIR VALUE OF FINANCIAL INSTRUMENTS (Level 3 Securities) (Details) - Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Continuing Operations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 1,595
Unrealized gains (losses)	176
Ending Balance	1,771	$ 1,595
Continuing Operations | Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	250
Unrealized gains (losses)	0
Ending Balance	250	250
Continuing Operations | Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	750
Unrealized gains (losses)	176
Ending Balance	926	750
Continuing Operations | Equities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	595
Unrealized gains (losses)	0
Ending Balance	595	595
Continuing and Discontinuing Operations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1,595	1,511
Unrealized gains (losses)		84
Purchases		100
Disposals		(100)
Ending Balance		1,595
Continuing and Discontinuing Operations | Corporate bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	250	250
Unrealized gains (losses)		0
Purchases		100
Disposals		(100)
Ending Balance		250
Continuing and Discontinuing Operations | Asset-backed securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	750	666
Unrealized gains (losses)		84
Purchases		0
Disposals		0
Ending Balance		750
Continuing and Discontinuing Operations | Equities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 595	595
Unrealized gains (losses)		0
Purchases		0
Disposals		0
Ending Balance		$ 595

FAIR VALUE OF FINANCIAL INSTR_8

FAIR VALUE OF FINANCIAL INSTRUMENTS (Commercial Mortgage Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 47,690	$ 42,520
Valuation allowance	(76)	(72)
Mortgage loans, net	$ 47,614	$ 42,448
Percent of Total	100.00%	100.00%
Multifamily
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 17,038	$ 11,741
Percent of Total	35.70%	27.60%
Office
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 11,861	$ 11,848
Percent of Total	24.90%	27.90%
Industrials
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 10,124	$ 10,124
Percent of Total	21.20%	23.80%
Retail
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 2,227	$ 2,227
Percent of Total	4.70%	5.20%
Mixed use/Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 6,440	$ 6,580
Percent of Total	13.50%	15.50%
East North Central
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 3,245	$ 3,245
Percent of Total	6.80%	7.60%
Southern Atlantic
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 9,752	$ 7,026
Percent of Total	20.50%	16.50%
East South Central
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 8,197	$ 8,358
Percent of Total	17.20%	19.70%
New England
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 6,588	$ 6,588
Percent of Total	13.80%	15.50%
Middle Atlantic
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 14,936	$ 15,076
Percent of Total	31.20%	35.50%
Mountain
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 2,227	$ 2,227
Percent of Total	4.70%	5.20%
Other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 2,745	$ 0
Percent of Total	5.80%	0.00%
Less than 65%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 30,361	$ 34,024
65%-75%
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value	$ 17,329	$ 8,496

FAIR VALUE OF FINANCIAL INSTR_9

FAIR VALUE OF FINANCIAL INSTRUMENTS (Amortized Cost Basis by Year of Origination and Credit Quality Indicator) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 5,537
2019	16,889
2018	25,264
Total	47,690	$ 42,520
Current-period write-offs	0
Current-period recoveries	0
Current-period net write-offs	0
1-2 internal grade
Financing Receivable, Credit Quality Indicator [Line Items]
2020	5,537
2019	8,393
2018	18,676
Total	32,606
3-4 internal grade
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	8,496
2018	6,588
Total	15,084
5 internal grade
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Total	0
6 internal grade
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Total	0
7 internal grade
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Total	$ 0

FAIR VALUE OF FINANCIAL INST_10

FAIR VALUE OF FINANCIAL INSTRUMENTS (Rollforward of Allowance for Mortgage Loan Losses) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, January 1, 2020	$ 72
Current-period provision for expected credit losses	4
Write-off charged against the allowance, if any	0
Recoveries of amounts previously written off, if any	0
Ending balance of the allowance for mortgage loan losses, December 31, 2020	$ 76

REINSURANCE (Narrative) (Detail

REINSURANCE (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)program	Dec. 31, 2018USD ($)
Reinsurance [Line Items]
Number of additional assumed programs | program		2
Number of programs not renewed | program		1
Casualty Excess and Property Excess | Maximum
Reinsurance [Line Items]
Reinsurance recoverables	$ 22,500
Property and casualty business
Reinsurance [Line Items]
Reinsurance recoverables	$ 28,887	$ 3,883
Property and casualty business | Casualty Excess and Property Excess
Reinsurance [Line Items]
Reinsurance retention policy, reinsured risk, percentage	6.37%	6.66%
Property and casualty business | Casualty Excess and Property Excess | Minimum
Reinsurance [Line Items]
Retention amount	$ 58,500	$ 58,500	$ 58,500
Property and casualty business | Casualty Excess and Property Excess | Maximum
Reinsurance [Line Items]
Reinsurance recoverables	30,000	30,000
Retention amount	$ 71,500	$ 71,500	$ 71,500
Percent of program placed	75.00%
Life Insurance | Discontinued Operations | Top Five Reinsurers
Reinsurance [Line Items]
Percentage of insurance in force			6.78%

REINSURANCE (Ceded and Assumed

REINSURANCE (Ceded and Assumed Reinsurance) (Details) - Property and casualty business - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reinsurance [Line Items]
Ceded premiums written	$ 88,339	$ 74,511	$ 66,800
Ceded premiums earned	84,924	72,023	63,487
Loss and loss settlement expenses ceded	185,653	28,447	22,317
Assumed premiums written	34,371	27,869	16,761
Assumed premiums earned	33,679	25,412	16,957
Loss and loss settlement expenses assumed	$ 29,141	$ 14,813	$ (3,954)

REINSURANCE (Reinsurance Progra

REINSURANCE (Reinsurance Programs) (Details) - Property and casualty business - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Casualty excess of loss
Reinsurance [Line Items]
Stated Retention	$ 2,500,000	$ 2,500,000	$ 2,500,000
Limits	$ 60,000,000	$ 60,000,000	$ 60,000,000
Percentage of Coverage	100.00%	100.00%	100.00%
Coverage	$ 57,500,000	$ 57,500,000	$ 57,500,000
Property excess of loss
Reinsurance [Line Items]
Stated Retention	2,500,000	2,500,000	2,500,000
Limits	$ 25,000,000	$ 25,000,000	$ 25,000,000
Percentage of Coverage	100.00%	100.00%	100.00%
Coverage	$ 22,500,000	$ 22,500,000	$ 22,500,000
Surety excess of loss
Reinsurance [Line Items]
Stated Retention	1,500,000	1,500,000	1,500,000
Limits	$ 45,000,000	$ 45,000,000	$ 45,000,000
Percentage of Coverage	100.00%	100.00%	100.00%
Coverage	$ 43,500,000	$ 43,500,000	$ 43,500,000
Property catastrophe, excess
Reinsurance [Line Items]
Stated Retention	20,000,000	20,000,000	20,000,000
Limits	$ 250,000,000	$ 250,000,000	$ 250,000,000
Percentage of Coverage	100.00%	100.00%	100.00%
Coverage	$ 230,000,000	$ 230,000,000	$ 230,000,000
Boiler and machinery
Reinsurance [Line Items]
Limits	$ 50,000,000	$ 50,000,000	$ 50,000,000
Percentage of Coverage	100.00%	100.00%	100.00%
Coverage	$ 50,000,000	$ 50,000,000	$ 50,000,000

REINSURANCE (Discontinued Opera

REINSURANCE (Discontinued Operations - Life Insurance Business) (Details) - Discontinued Operations - Life Insurance - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reinsurance [Line Items]
Ceded insurance in-force	$ 0	$ 0	$ 0
Ceded premiums earned	0	0	716
Loss and loss settlement expenses ceded	$ 0	$ 0	$ 1,473

RESERVES FOR LOSSES AND LOSS _3

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross liability for losses and loss settlement expenses at beginning of year	$ 1,421,754	$ 1,312,483	$ 1,224,183
Ceded losses and loss settlement expenses	(68,536)	(57,094)	(59,871)
Net liability for losses and loss settlement expenses at beginning of year	1,353,218	1,255,389	1,164,312
Losses and loss settlement expenses incurred for claims occurring during
Current year	887,119	835,507	785,778
Prior years	(17,652)	(5,335)	(54,167)
Total incurred	869,467	830,172	731,611
Losses and loss settlement expense payments for claims occurring during
Current year	354,635	333,975	306,032
Prior years	421,762	398,368	334,502
Total paid	776,397	732,343	640,534
Net liability for losses and loss settlement expenses at end of year	1,446,288	1,353,218	1,255,389
Ceded loss and loss settlement expenses	131,843	68,536	57,094
Gross liability for losses and loss settlement expenses at end of year	$ 1,578,131	$ 1,421,754	$ 1,312,483

RESERVES FOR LOSSES AND LOSS _4

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Narrative) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	$ (25,428)
Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	(10,655)
Fidelity and surety
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	(2,068)
Personal automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	(1,851)
Commercial liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	12,845
Reinsurance assumed
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	5,972
Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Unfavorable (favorable) reserve development	$ 4,024

RESERVES FOR LOSSES AND LOSS _5

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Incurred Claims and Allocated Claim Adjustment Expenses) (Details) claim in Thousands, $ in Thousands	Dec. 31, 2020USD ($)claim	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)	Dec. 31, 2011USD ($)
Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 1,310,041
Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	1,370,664
Cumulative development	(10,655)
Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	1,745,748
Cumulative development	4,024
Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	477,439
Cumulative development	(25,428)
Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	516,338
2011 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	81,394	$ 81,694	$ 80,338	$ 81,463	$ 80,801	$ 79,591	$ 88,200	$ 88,371	$ 64,738	$ 81,522
Total of incurred but not reported liabilities plus expected development on reported claims	11,202
Cumulative development	$ (128)
Cumulative number of reported claims | claim	5,634
2011 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 121,982	121,749	121,319	121,434	120,219	119,820	120,492	117,082	142,330	148,220
Total of incurred but not reported liabilities plus expected development on reported claims	285
Cumulative development	$ (26,238)
Cumulative number of reported claims | claim	16,079
2011 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 90,972	90,643	90,838	90,766	91,336	92,379	92,519	90,750	87,299	84,887
Total of incurred but not reported liabilities plus expected development on reported claims	32
Cumulative development	$ 6,085
Cumulative number of reported claims | claim	15,262
2011 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 31,621	32,384	32,707	33,352	33,314	33,585	34,309	35,352	38,481	39,967
Total of incurred but not reported liabilities plus expected development on reported claims	159
Cumulative development	$ (8,346)
Cumulative number of reported claims | claim	3,965
2011 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 46,751	46,752	46,761	46,733	47,013	46,968	47,035	47,090	48,534	$ 50,014
Total of incurred but not reported liabilities plus expected development on reported claims	0
Cumulative development	$ (3,263)
Cumulative number of reported claims | claim	14,848
2012 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 89,900	91,571	89,731	91,346	92,537	91,980	94,195	96,158	100,389
Total of incurred but not reported liabilities plus expected development on reported claims	12,862
Cumulative development	$ (10,489)
Cumulative number of reported claims | claim	5,841
2012 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 110,245	109,480	109,687	108,623	107,958	108,047	108,774	110,448	138,602
Total of incurred but not reported liabilities plus expected development on reported claims	634
Cumulative development	$ (28,357)
Cumulative number of reported claims | claim	6,466
2012 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 96,176	96,059	96,305	96,389	96,594	95,321	94,755	90,848	100,039
Total of incurred but not reported liabilities plus expected development on reported claims	0
Cumulative development	$ (3,863)
Cumulative number of reported claims | claim	14,365
2012 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 38,290	39,063	39,182	39,015	38,553	38,423	42,158	46,279	48,848
Total of incurred but not reported liabilities plus expected development on reported claims	229
Cumulative development	$ (10,558)
Cumulative number of reported claims | claim	3,992
2012 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 44,160	44,158	44,165	44,352	44,715	46,150	46,403	46,199	$ 47,924
Total of incurred but not reported liabilities plus expected development on reported claims	1
Cumulative development	$ (3,764)
Cumulative number of reported claims | claim	10,790
2013 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 85,999	86,082	88,816	85,399	86,119	90,502	91,460	104,982
Total of incurred but not reported liabilities plus expected development on reported claims	3,498
Cumulative development	$ (18,983)
Cumulative number of reported claims | claim	6,406
2013 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 92,855	92,988	93,858	93,826	92,212	91,498	88,550	91,521
Total of incurred but not reported liabilities plus expected development on reported claims	61
Cumulative development	$ 1,334
Cumulative number of reported claims | claim	6,662
2013 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 106,140	104,886	105,248	104,980	103,726	102,943	98,037	104,356
Total of incurred but not reported liabilities plus expected development on reported claims	356
Cumulative development	$ 1,784
Cumulative number of reported claims | claim	15,528
2013 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 50,349	50,984	51,753	52,761	54,584	56,369	62,579	64,048
Total of incurred but not reported liabilities plus expected development on reported claims	307
Cumulative development	$ (13,699)
Cumulative number of reported claims | claim	4,255
2013 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 36,467	36,486	36,661	36,729	37,086	37,262	38,525	$ 39,232
Total of incurred but not reported liabilities plus expected development on reported claims	1
Cumulative development	$ (2,765)
Cumulative number of reported claims | claim	9,250
2014 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 107,417	105,507	102,487	97,809	106,486	117,958	118,928
Total of incurred but not reported liabilities plus expected development on reported claims	4,907
Cumulative development	$ (11,511)
Cumulative number of reported claims | claim	6,570
2014 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 127,068	126,811	128,503	128,185	128,762	131,198	126,216
Total of incurred but not reported liabilities plus expected development on reported claims	108
Cumulative development	$ 852
Cumulative number of reported claims | claim	7,935
2014 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 120,599	121,077	120,385	118,869	113,720	106,076	107,723
Total of incurred but not reported liabilities plus expected development on reported claims	457
Cumulative development	$ 12,876
Cumulative number of reported claims | claim	17,320
2014 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 52,889	53,023	54,636	56,630	58,284	60,729	64,051
Total of incurred but not reported liabilities plus expected development on reported claims	699
Cumulative development	$ (11,162)
Cumulative number of reported claims | claim	4,801
2014 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 52,810	52,702	52,615	52,782	52,944	52,661	$ 53,910
Total of incurred but not reported liabilities plus expected development on reported claims	12
Cumulative development	$ (1,100)
Cumulative number of reported claims | claim	10,959
2015 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 131,325	129,945	127,091	120,005	125,307	137,386
Total of incurred but not reported liabilities plus expected development on reported claims	10,405
Cumulative development	$ (6,061)
Cumulative number of reported claims | claim	7,732
2015 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 104,646	105,218	108,235	110,633	108,293	103,177
Total of incurred but not reported liabilities plus expected development on reported claims	144
Cumulative development	$ 1,469
Cumulative number of reported claims | claim	7,579
2015 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 137,335	137,395	138,987	132,206	129,816	125,506
Total of incurred but not reported liabilities plus expected development on reported claims	500
Cumulative development	$ 11,829
Cumulative number of reported claims | claim	20,079
2015 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 44,706	46,019	46,682	51,003	55,578	53,788
Total of incurred but not reported liabilities plus expected development on reported claims	578
Cumulative development	$ (9,082)
Cumulative number of reported claims | claim	5,666
2015 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 40,194	40,220	40,368	40,336	41,088	$ 42,848
Total of incurred but not reported liabilities plus expected development on reported claims	22
Cumulative development	$ (2,654)
Cumulative number of reported claims | claim	9,548
2016 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 140,784	142,397	136,275	130,041	139,144
Total of incurred but not reported liabilities plus expected development on reported claims	15,698
Cumulative development	$ 1,640
Cumulative number of reported claims | claim	8,882
2016 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 143,108	143,724	143,721	144,208	147,473
Total of incurred but not reported liabilities plus expected development on reported claims	667
Cumulative development	$ (4,365)
Cumulative number of reported claims | claim	9,849
2016 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 173,823	175,657	174,337	175,357	174,018
Total of incurred but not reported liabilities plus expected development on reported claims	1,449
Cumulative development	$ (195)
Cumulative number of reported claims | claim	27,288
2016 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 53,964	55,168	61,648	66,575	70,419
Total of incurred but not reported liabilities plus expected development on reported claims	815
Cumulative development	$ (16,455)
Cumulative number of reported claims | claim	7,927
2016 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 45,113	45,961	45,379	45,840	$ 48,072
Total of incurred but not reported liabilities plus expected development on reported claims	58
Cumulative development	$ (2,959)
Cumulative number of reported claims | claim	11,896
2017 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 156,369	152,547	139,032	139,602
Total of incurred but not reported liabilities plus expected development on reported claims	24,426
Cumulative development	$ 16,767
Cumulative number of reported claims | claim	8,883
2017 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 161,693	160,946	160,240	155,139
Total of incurred but not reported liabilities plus expected development on reported claims	1,536
Cumulative development	$ 6,554
Cumulative number of reported claims | claim	13,445
2017 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 233,159	235,110	224,553	227,919
Total of incurred but not reported liabilities plus expected development on reported claims	5,553
Cumulative development	$ 5,240
Cumulative number of reported claims | claim	32,838
2017 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 51,874	55,982	69,528	76,184
Total of incurred but not reported liabilities plus expected development on reported claims	1,182
Cumulative development	$ (24,310)
Cumulative number of reported claims | claim	8,173
2017 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 58,544	58,695	59,342	$ 60,330
Total of incurred but not reported liabilities plus expected development on reported claims	119
Cumulative development	$ (1,786)
Cumulative number of reported claims | claim	14,691
2018 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 176,496	172,894	163,059
Total of incurred but not reported liabilities plus expected development on reported claims	34,486
Cumulative development	$ 13,437
Cumulative number of reported claims | claim	8,590
2018 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 146,378	146,951	143,280
Total of incurred but not reported liabilities plus expected development on reported claims	2,610
Cumulative development	$ 3,098
Cumulative number of reported claims | claim	10,683
2018 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 253,045	245,173	236,629
Total of incurred but not reported liabilities plus expected development on reported claims	14,134
Cumulative development	$ 16,416
Cumulative number of reported claims | claim	34,380
2018 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 59,192	67,883	71,972
Total of incurred but not reported liabilities plus expected development on reported claims	1,802
Cumulative development	$ (12,780)
Cumulative number of reported claims | claim	7,947
2018 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 52,715	51,721	$ 51,639
Total of incurred but not reported liabilities plus expected development on reported claims	365
Cumulative development	$ 1,076
Cumulative number of reported claims | claim	13,658
2019 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 169,344	149,173
Total of incurred but not reported liabilities plus expected development on reported claims	46,518
Cumulative development	$ 20,171
Cumulative number of reported claims | claim	7,537
2019 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 155,482	164,030
Total of incurred but not reported liabilities plus expected development on reported claims	4,271
Cumulative development	$ (8,548)
Cumulative number of reported claims | claim	10,992
2019 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 291,139	279,229
Total of incurred but not reported liabilities plus expected development on reported claims	38,451
Cumulative development	$ 11,910
Cumulative number of reported claims | claim	34,393
2019 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 49,189	52,136
Total of incurred but not reported liabilities plus expected development on reported claims	2,335
Cumulative development	$ (2,947)
Cumulative number of reported claims | claim	7,113
2019 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 58,378	$ 59,547
Total of incurred but not reported liabilities plus expected development on reported claims	581
Cumulative development	$ (1,169)
Cumulative number of reported claims | claim	13,466
2020 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 171,013
Total of incurred but not reported liabilities plus expected development on reported claims	$ 83,792
Cumulative number of reported claims | claim	4,478
2020 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 207,207
Total of incurred but not reported liabilities plus expected development on reported claims	$ 29,773
Cumulative number of reported claims | claim	13,368
2020 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 243,360
Total of incurred but not reported liabilities plus expected development on reported claims	$ 71,185
Cumulative number of reported claims | claim	22,331
2020 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 45,365
Total of incurred but not reported liabilities plus expected development on reported claims	$ 4,289
Cumulative number of reported claims | claim	3,909
2020 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Incurred losses and allocated loss settlement expenses, net of reinsurance	$ 81,206
Total of incurred but not reported liabilities plus expected development on reported claims	$ 6,588
Cumulative number of reported claims | claim	15,585

RESERVES FOR LOSSES AND LOSS _6

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Cumulative Paid Claims and Allocated Claim Adjustment Expenses) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Liability for Claims and Claims Adjustment Expense [Line Items]
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	$ 1,347,699
Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	760,031
All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance	35,801
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	585,811
Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	1,242,097
All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance	723
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	129,290
Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	1,311,376
All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance	(80)
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	434,293
Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	380,733
All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance	19,345
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	116,050
Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	477,746
All outstanding liabilities for unpaid losses and loss settlement expenses before 2011, net of reinsurance	620
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	39,210
2011 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	68,052	$ 66,500	$ 64,541	$ 62,165	$ 56,150	$ 50,146	$ 40,595	$ 26,260	$ 13,670	$ 6,236
2011 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	121,157	121,063	120,731	120,178	118,183	116,614	112,497	109,429	104,800	85,585
2011 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	90,677	90,515	89,459	88,609	87,475	85,348	79,383	65,021	50,931	34,332
2011 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	30,573	29,890	29,700	29,453	29,022	28,247	27,497	26,033	21,678	10,322
2011 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	46,751	46,752	46,650	46,575	46,573	46,487	45,949	45,306	43,801	$ 36,489
2012 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	74,644	73,819	71,773	69,800	64,574	55,316	39,948	24,620	6,875
2012 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	108,123	107,992	106,740	106,521	105,250	103,197	100,078	94,380	71,008
2012 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	96,176	94,983	94,747	93,179	90,292	82,944	71,469	57,201	39,247
2012 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	36,520	36,060	35,388	34,330	33,063	30,933	28,397	23,023	11,802
2012 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	44,159	44,158	44,158	44,139	43,569	44,448	43,375	41,979	$ 30,415
2013 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	78,448	75,961	72,115	65,773	54,559	39,953	25,228	9,835
2013 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	92,472	92,012	91,493	89,200	86,115	82,853	78,226	59,331
2013 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	103,037	101,580	100,058	96,375	90,780	79,663	67,630	43,592
2013 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	48,093	47,572	47,071	45,078	42,941	38,023	30,209	14,136
2013 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	36,466	36,397	36,323	36,155	35,306	34,297	32,788	$ 25,505
2014 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	96,509	93,060	83,109	70,363	50,211	29,679	10,207
2014 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	126,307	125,745	123,697	122,370	116,750	113,663	84,456
2014 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	116,843	113,751	109,682	99,922	87,590	68,033	45,704
2014 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	46,299	45,825	45,193	42,964	38,441	30,289	13,965
2014 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	52,519	52,543	52,018	51,837	49,710	47,912	$ 37,055
2015 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	104,472	96,339	74,292	53,901	27,182	11,185
2015 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	103,975	104,115	101,367	95,515	90,454	67,217
2015 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	134,100	129,317	118,395	99,201	78,225	50,782
2015 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	40,034	39,305	38,424	35,229	27,304	12,063
2015 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	40,029	39,865	39,428	39,027	37,431	$ 29,551
2016 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	102,757	88,885	63,526	38,184	13,782
2016 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	139,353	137,909	132,429	125,962	92,895
2016 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	164,341	148,224	128,157	103,528	66,013
2016 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	47,082	45,743	40,680	32,345	14,413
2016 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	44,618	44,046	42,660	40,910	$ 32,999
2017 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	91,984	70,500	43,172	17,716
2017 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	152,219	145,900	137,058	99,484
2017 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	197,893	166,170	126,644	81,311
2017 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	41,672	38,083	31,309	14,647
2017 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	57,169	55,982	53,111	$ 42,135
2018 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	79,168	44,772	16,200
2018 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	133,703	123,559	92,770
2018 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	187,405	138,092	81,572
2018 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	43,189	35,369	16,949
2018 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	49,464	47,433	$ 37,410
2019 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	46,986	18,221
2019 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	136,084	100,980
2019 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	153,244	91,919
2019 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	29,668	13,582
2019 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	52,390	$ 40,544
2020 | Commercial other liability
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	17,011
2020 | Commercial fire and allied
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	128,704
2020 | Commercial automobile
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	67,660
2020 | Workers' compensation
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	17,603
2020 | Personal
Liability for Claims and Claims Adjustment Expense [Line Items]
Cumulative paid losses and allocated loss settlement expenses, net of reinsurance	$ 54,181

RESERVES FOR LOSSES AND LOSS _7

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Reconciliation of the Disclosure Claims Development to the Liability for Claims and Claim Adjustment Expenses) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	$ 1,347,699
Net outstanding liabilities for unpaid unallocated loss settlement expenses	97,379
Fair value adjustment (purchase accounting adjustment for Mercer acquisition)	1,210
Liabilities for unpaid losses and loss settlement expenses, net of reinsurance	1,446,288
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	133,001
Reinsurance fair value amortization (purchase accounting adjustment for Mercer acquisition)	(1,158)
Total reinsurance recoverable on unpaid losses and loss settlement expenses	131,843
Total gross liability for unpaid losses and loss settlement expenses	1,578,131	$ 1,421,754	$ 1,312,483	$ 1,224,183
Commercial other liability
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	585,811
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	29,497
Commercial fire and allied
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	129,290
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	42,481
Commercial automobile
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	434,293
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	3,334
Commercial workers' compensation
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	116,050
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	47,130
Personal
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	39,210
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	8,867
All other lines
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items]
Net outstanding liabilities for unpaid losses and allocated loss settlement expenses	43,045
Reinsurance recoverable on unpaid losses and allocated loss settlement expenses	$ 1,692

RESERVES FOR LOSSES AND LOSS _8

RESERVES FOR LOSSES AND LOSS SETTLEMENT EXPENSES (Historical Claims Duration) (Details)	Dec. 31, 2020
Commercial other liability
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	9.60%
Year 2	16.00%
Year 3	18.00%
Year 4	16.80%
Year 5	12.30%
Year 6	7.20%
Year 7	4.30%
Year 8	2.70%
Year 9	1.70%
Year 10	1.90%
Commercial fire and allied
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	64.60%
Year 2	21.40%
Year 3	4.80%
Year 4	3.80%
Year 5	2.20%
Year 6	1.30%
Year 7	0.70%
Year 8	0.70%
Year 9	0.20%
Year 10	0.10%
Commercial automobile
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	35.90%
Year 2	20.30%
Year 3	15.50%
Year 4	12.50%
Year 5	7.50%
Year 6	3.10%
Year 7	1.70%
Year 8	0.90%
Year 9	1.20%
Year 10	0.20%
Commercial workers' compensation
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	29.50%
Year 2	32.40%
Year 3	14.80%
Year 4	7.60%
Year 5	3.50%
Year 6	2.50%
Year 7	1.50%
Year 8	1.20%
Year 9	0.90%
Year 10	2.20%
Personal
Short-duration Insurance Contracts, Historical Claims Duration [Line Items]
Year 1	71.30%
Year 2	19.70%
Year 3	3.80%
Year 4	2.40%
Year 5	0.70%
Year 6	0.70%
Year 7	0.10%
Year 8	0.10%
Year 9	0.10%
Year 10	0.00%

STATUTORY REPORTING, CAPITAL _3

STATUTORY REPORTING, CAPITAL REQUIREMENTS AND DIVIDENDS AND RETAINED EARNINGS RESTRICTIONS (Statutory Capital and Surplus) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property and casualty business
Statutory Accounting Practices [Line Items]
Statutory Capital and Surplus	$ 671,599	$ 707,571	$ 774,257
Statutory Net Income (Loss)	$ (17,705)	$ (22,393)	219,065
Life, accident and health business
Statutory Accounting Practices [Line Items]
Statutory Capital and Surplus			0
Statutory Net Income (Loss)			$ 3,548

STATUTORY REPORTING, CAPITAL _4

STATUTORY REPORTING, CAPITAL REQUIREMENTS AND DIVIDENDS AND RETAINED EARNINGS RESTRICTIONS (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statutory Accounting Practices [Line Items]
Long term debt	$ 50,000	$ 0
Payment of cash dividends	28,526	32,662	$ 105,408
United Fire & Casualty Company
Statutory Accounting Practices [Line Items]
Intercompany dividend payments that are eliminated in Consolidated Financial Statements	4,000	57,000	105,000
Subsidiaries
Statutory Accounting Practices [Line Items]
Intercompany dividend payments that are eliminated in Consolidated Financial Statements	62,400	$ 6,300	$ 8,500
State of Iowa Insurance Department
Statutory Accounting Practices [Line Items]
Statutory amount available for dividend payments	$ 66,800

FEDERAL INCOME TAX (Federal Inc

FEDERAL INCOME TAX (Federal Income Tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation Of Consolidated Federal Income Tax Expense (Benefit) [Line Items]
Consolidated federal income tax expense (benefit)	$ (56,809)	$ 2,059	$ (11,405)
Continuing and Discontinuing Operations
Reconciliation Of Consolidated Federal Income Tax Expense (Benefit) [Line Items]
Current	(46,861)	(7,843)	18,493
Deferred	(9,948)	9,902	(21,791)
Consolidated federal income tax expense (benefit)	$ (56,809)	$ 2,059	$ (3,298)

FEDERAL INCOME TAX (Narrative)

FEDERAL INCOME TAX (Narrative) (Details) $ in Millions	Mar. 27, 2020USD ($)
Income Tax Disclosure [Abstract]
Income tax benefit, CARES Act	$ 18.6

FEDERAL INCOME TAX (Reconciliat

FEDERAL INCOME TAX (Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation Of Consolidated Federal Income Tax Expense (Benefit) [Line Items]
The CARES Act		$ 0	$ 0
Consolidated federal income tax expense (benefit)	$ (56,809)	2,059	(11,405)
Reconciliation of consolidated federal income tax expense (benefit), continuing operations	(56,809)	2,059	(11,405)
Reconciliation of consolidated federal income tax expense (benefit), gain on sale of discontinued operations	0	0	7,544
Reconciliation of consolidated federal income tax expense (benefit), discontinued operations	0	0	563
Continuing and Discontinuing Operations
Reconciliation Of Consolidated Federal Income Tax Expense (Benefit) [Line Items]
Computed expected income tax expense (benefit)	(35,598)	3,544	5,114
The CARES Act	(18,562)
Tax-exempt municipal bond interest income	(3,669)	(3,961)	(4,235)
Nontaxable dividend income	(517)	(594)	(591)
Goodwill impairment	3,169	0	0
Valuation allowance reduction	0	0	(329)
Compensation	695	1,638	(497)
Reinsurance	0	998	0
Research and development credit	(2,045)	0	0
Other, net	(282)	434	(2,760)
Consolidated federal income tax expense (benefit)	(56,809)	2,059	(3,298)
Reconciliation of consolidated federal income tax expense (benefit), continuing operations	$ (56,809)	$ 2,059	$ (3,298)

FEDERAL INCOME TAX (Net Deferre

FEDERAL INCOME TAX (Net Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax liabilities
Deferred policy acquisition costs	$ 18,289	$ 19,801
Investments in partnerships	964	2,156
Prepaid pension cost	4,553	4,441
Net bond discount accretion	383	357
Depreciation	4,187	1,908
Revaluation of investment basis	325	377
Identifiable intangible assets	1,391	1,540
Capitalized Software	4,891	0
Other	1,568	1,416
Gross deferred tax liability	91,729	93,216
Deferred tax assets
Financial statement reserves in excess of income tax reserves	23,851	20,845
Unearned premium adjustment	18,979	20,816
Net operating loss carryforwards	0	1,708
Underfunded benefit plan obligation	4,295	9,072
Post-retirement benefits other than pensions	9,533	10,785
Other-than-temporary impairment of investments	1,974	2,094
Compensation expense related to stock options	2,307	2,394
Nonqualified deferred compensation	2,066	1,623
Other	3,795	3,293
Deferred tax asset	66,800	72,630
Net deferred tax liability	24,929	20,586
Equity securities
Deferred tax liabilities
Net unrealized appreciation on investment securities	33,096	48,652
All other securities
Deferred tax liabilities
Net unrealized appreciation on investment securities	$ 22,082	$ 12,568

EMPLOYEE BENEFITS (Narrative) (

EMPLOYEE BENEFITS (Narrative) (Details)	Jan. 01, 2017USD ($)	Dec. 31, 2020USD ($)programinvestment_manager	Dec. 31, 2019USD ($)	Jan. 01, 2019	Dec. 31, 2018USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of programs offered under health and dental benefit plan | program		2
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Eligibility, minimum required service period		1 year
Eligibility, minimum age		21 years
Estimated employer contribution in next fiscal year		$ 10,000,000
Retirement plan, employee deductible	$ 500
Percentage of retirement plan owed by employees 65 or older	50.00%
Percentage of retirement plan owed by employees less 65	100.00%
Percentage of retirement plan				100.00%
Benefit obligation		$ 271,744,000	$ 252,374,000		$ 202,156,000
Number of external investment managers | investment_manager		6
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation		$ 31,666,000	$ 31,001,000		$ 30,973,000

EMPLOYEE BENEFITS (Asset Alloca

EMPLOYEE BENEFITS (Asset Allocation) (Details) - Pension Benefits - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 248,735	$ 199,466	$ 164,819
Actual % of total	100.00%	100.00%
Fixed maturity securities - corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 21,718	$ 13,250
Actual % of total	8.70%	6.70%
Fixed maturity securities - corporate bonds | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Fixed maturity securities - corporate bonds | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	15.00%
Redeemable preferred stock
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 3,534	$ 2,929
Actual % of total	1.40%	1.50%
Redeemable preferred stock | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Redeemable preferred stock | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	10.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 149,413	$ 117,117
Actual % of total	60.00%	58.70%
Equity securities | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	50.00%
Equity securities | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	70.00%
Core plus bond separate account fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 26,266	$ 20,505
Actual % of total	10.60%	10.30%
Core plus bond separate account fund | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Core plus bond separate account fund | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	40.00%
U.S. property separate account fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 22,269	$ 22,114
Actual % of total	9.00%	11.10%
U.S. property separate account fund | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
U.S. property separate account fund | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	25.00%
Arbitrage fund
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 9,873	$ 9,245
Actual % of total	4.00%	4.60%
Arbitrage fund | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Arbitrage fund | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	10.00%
United Life annuity
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 11,398	$ 10,855
Actual % of total	4.60%	5.40%
United Life annuity | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
United Life annuity | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	10.00%
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 4,264	$ 3,451
Actual % of total	1.70%	1.70%
Cash and cash equivalents | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	0.00%
Cash and cash equivalents | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target allocation	10.00%

EMPLOYEE BENEFITS (Fair Value o

EMPLOYEE BENEFITS (Fair Value of Plan Assets) (Details) - Pension Benefits - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	$ 248,735	$ 199,466	$ 164,819
Fixed maturity securities - corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	21,718	13,250
Redeemable preferred stock
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	3,534	2,929
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	149,413	117,117
Core plus bond separate account fund
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	26,266	20,505
U.S. property separate account fund
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	22,269	22,114
U.S. property separate account fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	22,269	22,114	$ 20,841
Arbitrage fund
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	9,873	9,245
United Life annuity
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	11,398	10,855
Cash and cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	4,264	3,451
Recurring
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	237,333	188,608
Recurring | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	157,207	123,494
Recurring | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	57,857	43,000
Recurring | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	22,269	22,114
Recurring | Fixed maturity securities - corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	21,718	13,250
Recurring | Fixed maturity securities - corporate bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Fixed maturity securities - corporate bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	21,718	13,250
Recurring | Fixed maturity securities - corporate bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Redeemable preferred stock
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	3,534	2,929
Recurring | Redeemable preferred stock | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	3,534	2,929
Recurring | Redeemable preferred stock | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Redeemable preferred stock | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	149,413	117,117
Recurring | Equity securities | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	149,413	117,117
Recurring | Equity securities | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Equity securities | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Core plus bond separate account fund
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	26,266	20,505
Recurring | Core plus bond separate account fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Core plus bond separate account fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	26,266	20,505
Recurring | Core plus bond separate account fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | U.S. property separate account fund
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	22,269	22,114
Recurring | U.S. property separate account fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | U.S. property separate account fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | U.S. property separate account fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	22,269	22,114
Recurring | Arbitrage fund
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	9,873	9,245
Recurring | Arbitrage fund | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Arbitrage fund | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	9,873	9,245
Recurring | Arbitrage fund | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Money market funds
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	4,260	3,448
Recurring | Money market funds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	4,260	3,448
Recurring | Money market funds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	0	0
Recurring | Money market funds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets measured at fair value	$ 0	$ 0

EMPLOYEE BENEFITS (Change in Fa

EMPLOYEE BENEFITS (Change in Fair Value of Pension Plan Assets) (Details) - Pension Benefits - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 199,466	$ 164,819
Fair value of plan assets at end of year	248,735	199,466
U.S. property separate account fund
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	22,114
Fair value of plan assets at end of year	22,269	22,114
U.S. property separate account fund | Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	22,114	20,841
Unrealized gains	155	1,273
Fair value of plan assets at end of year	$ 22,269	$ 22,114

EMPLOYEE BENEFITS (Assumptions)

EMPLOYEE BENEFITS (Assumptions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates [Abstract]
Effect of 1% increase on the net periodic postretirement health care benefit cost	$ 643
Effect of 1% decrease on the net periodic postretirement health care benefit cost	(494)
Effect of 1% increase on the accumulated postretirement benefit obligation	5,520
Effect of 1% decrease on the accumulated postretirement benefit obligation	$ (4,451)
Pension Benefits
Assumptions Used to Determine Benefit Obligations [Abstract]
Discount rate	2.58%	3.32%
Rate of compensation increase	2.75%	3.00%
Assumptions Used to Determine Net Periodic Benefit Cost [Abstract]
Discount rate	3.32%	4.18%	3.65%
Expected long-term rate of return on plan assets	6.70%	6.70%	6.70%
Rate of compensation increase	3.00%	3.00%	3.00%
Post-retirement Benefits
Assumptions Used to Determine Benefit Obligations [Abstract]
Discount rate	2.58%	3.32%
Assumptions Used to Determine Net Periodic Benefit Cost [Abstract]
Discount rate	3.32%	4.18%	3.65%
Health Care Benefits
Assumed Health Care Cost Trend Rates [Abstract]
Health care cost trend rates assumed for next year	7.00%	6.75%
Rate to which the health care trend rate is assumed to decline (ultimate trend rate)	4.50%	4.50%
Dental Claims
Assumed Health Care Cost Trend Rates [Abstract]
Health care cost trend rates assumed for next year	3.00%	4.00%

EMPLOYEE BENEFITS (Obligation a

EMPLOYEE BENEFITS (Obligation and Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Benefits
Reconciliation of benefit obligation
Benefit obligation at beginning of year	$ 252,374	$ 202,156
Service cost	10,829	7,989	$ 8,701
Interest cost	8,266	8,320	7,500
Actuarial loss (gain)	38,920	39,598
Adjustment for plan amendment	(32,175)	0
Benefit payments	(6,470)	(5,689)
Benefit obligation at end of year	271,744	252,374	202,156
Reconciliation of fair value of plan assets
Fair value of plan assets at beginning of year	199,466	164,819
Actual return on plan assets	45,739	36,336
Employer contributions	10,000	4,000
Benefit payments	(6,470)	(5,689)
Fair value of plan assets at end of year	248,735	199,466	164,819
Funded status at end of year	(23,009)	(52,908)
Accumulated pension benefit obligation	271,515	226,196
Post-retirement Benefits
Reconciliation of benefit obligation
Benefit obligation at beginning of year	31,001	30,973
Service cost	1,728	1,823	2,998
Interest cost	1,014	1,274	2,009
Actuarial loss (gain)	(1,084)	(1,806)
Adjustment for plan amendment	0	0
Benefit payments	(993)	(1,263)
Benefit obligation at end of year	31,666	31,001	30,973
Reconciliation of fair value of plan assets
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	993	1,263
Benefit payments	(993)	(1,263)
Fair value of plan assets at end of year	0	0	$ 0
Funded status at end of year	$ (31,666)	$ (31,001)

EMPLOYEE BENEFITS (AOCI) (Detai

EMPLOYEE BENEFITS (AOCI) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service cost	$ (32,175)	$ 0
Unrecognized actuarial (gain) loss	66,864	64,059
Total amounts recognized in AOCI	34,689	64,059
Anticipated amortization of net actuarial losses in next fiscal year	3,995
Post-retirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service cost	(20,863)	(28,947)
Unrecognized actuarial (gain) loss	6,627	8,086
Total amounts recognized in AOCI	(14,236)	$ (20,861)
Anticipated amortization of net actuarial losses in next fiscal year	$ 260

EMPLOYEE BENEFITS (Net Periodic

EMPLOYEE BENEFITS (Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Pension Benefits
Net periodic benefit cost
Service cost	$ 10,829	$ 7,989	$ 8,701
Interest cost	8,266	8,320	7,500
Expected return on plan assets	(13,539)	(10,784)	(10,502)
Amortization of prior service cost	0	0	0
Amortization of net loss	3,914	3,603	4,287
Net periodic benefit cost	9,470	9,128	9,986
Post-retirement Benefits
Net periodic benefit cost
Service cost	1,728	1,823	2,998
Interest cost	1,014	1,274	2,009
Expected return on plan assets	0	0	0
Amortization of prior service cost	(8,084)	(8,684)	(5,409)
Amortization of net loss	375	894	2,355
Net periodic benefit cost	$ (4,967)	$ (4,693)	$ 1,953

EMPLOYEE BENEFITS (Expected Ben

EMPLOYEE BENEFITS (Expected Benefit Payments) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Pension Benefits
Expected Future Benefit Payments
2021	$ 7,330
2022	7,920
2023	8,860
2024	9,850
2025	10,970
2026 - 2030	67,280
Post-retirement Benefits
Expected Future Benefit Payments
2021	940
2022	990
2023	1,010
2024	1,050
2025	1,090
2026 - 2030	$ 6,520

EMPLOYEE BENEFITS (Profit-Shari

EMPLOYEE BENEFITS (Profit-Sharing Plan and ESOP) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Profit-Sharing Plan
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Employer contribution to the profit-sharing plan	$ 4,637	$ 4,096	$ 7,607

STOCK-BASED COMPENSATION (Narra

STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($)	1 Months Ended	12 Months Ended			144 Months Ended	192 Months Ended
	May 31, 2014	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2020	May 20, 2020	May 19, 2020	Dec. 31, 2008	Dec. 31, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)		150,000				150,000
Allocated share-based compensation expense		$ 4,991,000	$ 6,152,000	$ 5,249,000
Stock-based compensation expense		4,095,000			$ 4,095,000	$ 4,095,000
Intrinsic value of options exercised		299,000	2,055,000	5,850,000
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense		3,734,000	4,659,000	$ 3,877,000
Total compensation expense that has yet to be recognized		3,074,000			3,074,000	3,074,000
Intrinsic value of the unvested restricted stock awards outstanding		$ 5,469,000	$ 10,165,000		$ 5,469,000	$ 5,469,000
Employee Stock Award Plan-2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized shares available for future issuance (in shares)		700,680	834,910		700,680	700,680			1,900,000
Additional shares authorized (in shares)	1,500,000	0			1,500,000
Award expiration term		10 years
Employee Stock Award Plan-2008 | Restricted Stock Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of restricted stock awards		3 years
Employee Stock Award Plan-2008 | Restricted Stock Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of restricted stock awards		5 years
Employee Stock Award Plan-2008 | Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of option awards vest and exercisable in installments		20.00%
Employee Stock Award Plan-2008 | Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of option awards vest and exercisable in installments		33.30%
Director Plan - 2005
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized shares available for future issuance (in shares)		160,135	34,863		160,135	160,135	450,000	300,000		300,000

STOCK-BASED COMPENSATION (Stock

STOCK-BASED COMPENSATION (Stock Award Plans) (Details) - shares	1 Months Ended	12 Months Ended	144 Months Ended	192 Months Ended
	May 31, 2014	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Additional shares authorized (in shares)		150,000		150,000
Number of option awards exercised (in shares)		45,628
Employee Stock Award Plan-2008
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance (in shares)		834,910	1,900,000
Additional shares authorized (in shares)	1,500,000	0	1,500,000
Number of awards granted (in shares)		(172,478)	(3,288,899)
Number of awards forfeited or expired (in shares)		38,248	589,579
Ending balance (in shares)		700,680	700,680	700,680
Number of unrestricted stock awards granted (in shares)		172,478	3,288,899
Employee Stock Award Plan-2008 | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of option awards exercised (in shares)		30,900	1,474,089
Employee Stock Award Plan-2008 | Unrestricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of awards granted (in shares)		0	(10,090)
Number of unrestricted stock awards granted (in shares)		0	10,090
Employee Stock Award Plan-2008 | Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of restricted stock awards vested (in shares)		63,600	164,378
Director Plan - 2005
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Beginning balance (in shares)		34,863		300,000
Number of awards granted (in shares)		(24,728)		(313,868)
Number of awards forfeited or expired (in shares)		0		24,003
Ending balance (in shares)		160,135	160,135	160,135
Number of unrestricted stock awards granted (in shares)		24,728		313,868
Director Plan - 2005 | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of option awards exercised (in shares)		14,728		133,820
Director Plan - 2005 | Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award Available for Grant [Roll Forward]
Number of restricted stock awards vested (in shares)		14,300		98,491

STOCK-BASED COMPENSATION (Sto_2

STOCK-BASED COMPENSATION (Stock-Based Compensation Expense) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Share-based Payment Arrangement [Abstract]
2021	$ 2,624
2022	1,107
2023	269
2024	83
2025	12
Total	$ 4,095

STOCK-BASED COMPENSATION (Analy

STOCK-BASED COMPENSATION (Analysis of Stock Options Award Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020
Shares
Outstanding at beginning of period (in shares)	829,714
Granted (in shares)	110,470
Exercised (in shares)	(45,628)
Cancelled/Forfeited (in shares)	(1,300)
Outstanding at end of period (in shares)	893,256
Exercisable at end of period (in shares)	663,788
Weighted-Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 35.39
Granted (in dollars per share)	44.08
Exercised (in dollars per share)	21.93
Cancelled/Forfeited (in dollars per share)	29.20
Outstanding at end of period (in dollars per share)	37.16
Exercisable at end of period (in dollars per share)	$ 34.46
Outstanding, weighted-average remaining life	5 years 1 month 28 days
Exercisable, weighted-average remaining life	4 years 2 months 15 days
Outstanding, aggregate intrinsic value	$ 179
Exercisable, aggregate intrinsic value	$ 179

STOCK-BASED COMPENSATION (Ana_2

STOCK-BASED COMPENSATION (Analysis of Restricted Stock Award Activity) (Details) - Restricted Stock Awards	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Shares
Non-vested at beginning of period (in shares) | shares	246,750
Granted (in shares) | shares	101,130
Vested (in shares) | shares	(77,900)
Forfeited (in shares) | shares	(52,097)
Non-vested at end of period (in shares) | shares	217,883
Weighted-Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share) | $ / shares	$ 43.31
Granted (in dollars per share) | $ / shares	37.87
Vested (in dollars per share) | $ / shares	39.93
Forfeited (in dollars per share) | $ / shares	41.40
Non-vested at end of period (in dollars per share) | $ / shares	$ 42.45

STOCK-BASED COMPENSATION (Assum

STOCK-BASED COMPENSATION (Assumptions) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Payment Arrangement [Abstract]
Risk-free interest rate	1.40%	2.57%	2.79%
Expected volatility	22.26%	26.40%	21.79%
Expected option life	7 years	7 years	7 years
Expected dividends (in dollars per share)	$ 1.32	$ 1.24	$ 1.12
Weighted-average grant-date fair value of options granted during the year (in dollars per share)	$ 6.96	$ 12.97	$ 8.90

STOCK-BASED COMPENSATION (Sto_3

STOCK-BASED COMPENSATION (Stock Options Outstanding and Exercisable) (Details)	12 Months Ended
	Dec. 31, 2020$ / sharesshares
Exercise Price $20.40 to $29.02
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range (in dollars per share)	$ 20.40
Range of Exercise Prices, Upper Range (in dollars per share)	$ 29.02
Number Outstanding (in shares) | shares	92,415
Weighted-Average Remaining Contractual Life (in years)	2 years 1 month 20 days
Weighted-Average Exercise Price (in dollars per share)	$ 23.81
Number Exercisable (in shares) | shares	87,070
Weighted-Average Exercise Price (in dollars per share)	$ 23.63
Exercise Price $29.03 to $29.37
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range (in dollars per share)	29.03
Range of Exercise Prices, Upper Range (in dollars per share)	$ 29.37
Number Outstanding (in shares) | shares	182,462
Weighted-Average Remaining Contractual Life (in years)	3 years 11 months 4 days
Weighted-Average Exercise Price (in dollars per share)	$ 29.12
Number Exercisable (in shares) | shares	182,462
Weighted-Average Exercise Price (in dollars per share)	$ 29.12
Exercise Price $29.38 to $40.61
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range (in dollars per share)	29.38
Range of Exercise Prices, Upper Range (in dollars per share)	$ 40.61
Number Outstanding (in shares) | shares	239,097
Weighted-Average Remaining Contractual Life (in years)	4 years 14 days
Weighted-Average Exercise Price (in dollars per share)	$ 35.47
Number Exercisable (in shares) | shares	210,663
Weighted-Average Exercise Price (in dollars per share)	$ 34.87
Exercise Price $40.62 to $44.88
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range (in dollars per share)	40.62
Range of Exercise Prices, Upper Range (in dollars per share)	$ 44.88
Number Outstanding (in shares) | shares	210,260
Weighted-Average Remaining Contractual Life (in years)	6 years 29 days
Weighted-Average Exercise Price (in dollars per share)	$ 42.87
Number Exercisable (in shares) | shares	158,190
Weighted-Average Exercise Price (in dollars per share)	$ 42.86
Exercise Price $44.89 to $54.26
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range (in dollars per share)	44.89
Range of Exercise Prices, Upper Range (in dollars per share)	$ 54.26
Number Outstanding (in shares) | shares	169,022
Weighted-Average Remaining Contractual Life (in years)	8 years 6 months 21 days
Weighted-Average Exercise Price (in dollars per share)	$ 48.44
Number Exercisable (in shares) | shares	25,403
Weighted-Average Exercise Price (in dollars per share)	$ 54.11
Exercise Price $20.40 to $54.26
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Lower Range (in dollars per share)	20.40
Range of Exercise Prices, Upper Range (in dollars per share)	$ 54.26
Number Outstanding (in shares) | shares	893,256
Weighted-Average Remaining Contractual Life (in years)	5 years 1 month 28 days
Weighted-Average Exercise Price (in dollars per share)	$ 37.16
Number Exercisable (in shares) | shares	663,788
Weighted-Average Exercise Price (in dollars per share)	$ 34.46

SEGMENT INFORMATION (Narrative)

SEGMENT INFORMATION (Narrative) (Details)	Sep. 18, 2017segment	Dec. 31, 2020segmentlocation
Segment Reporting Information [Line Items]
Number of reportable business segments | segment	2	1
Property and casualty business
Segment Reporting Information [Line Items]
Number of domestic business locations | location		6
Property and casualty business | Commercial Lines | Product Concentration Risk | Sales Revenue, Segment
Segment Reporting Information [Line Items]
Percentage of insurance in force		94.20%
Property and casualty business | Personal Lines | Product Concentration Risk | Sales Revenue, Segment
Segment Reporting Information [Line Items]
Percentage of insurance in force		5.80%

SEGMENT INFORMATION (Net Premiu

SEGMENT INFORMATION (Net Premiums) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net premiums earned from continuing operations	$ 1,055,082	$ 1,086,972	$ 1,037,451
Property and casualty business
Segment Reporting, Revenue Reconciling Item [Line Items]
Reinsurance assumed	33,679	25,412	16,957
Other	2,678	2,942	2,938
Total net premiums earned from continuing operations	1,055,082	1,086,972	1,037,451
Property and casualty business | Other liability
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	316,098	318,412	311,931
Property and casualty business | Fire and allied lines
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	277,515	285,205	276,193
Property and casualty business | Automobile
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	324,420	345,637	313,521
Property and casualty business | Workers' compensation
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	75,953	87,376	95,203
Property and casualty business | Fidelity and surety
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	28,001	25,539	24,437
Property and casualty business | Reinsurance assumed
Segment Reporting, Revenue Reconciling Item [Line Items]
Reinsurance assumed	30,417	21,861	13,228
Life Insurance | Discontinued Operations
Segment Reporting, Revenue Reconciling Item [Line Items]
Other	0	0	12
Total net premiums earned from continuing operations	0	0	13,003
Life Insurance | Discontinued Operations | Ordinary life (excluding universal life)
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	0	0	7,068
Life Insurance | Discontinued Operations | Universal life policy fees
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	0	0	3,363
Life Insurance | Discontinued Operations | Immediate annuities with life contingencies
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	0	0	2,515
Life Insurance | Discontinued Operations | Accident and health
Segment Reporting, Revenue Reconciling Item [Line Items]
Net premiums earned	$ 0	$ 0	$ 45

QUARTERLY SUPPLEMENTARY FINAN_3

QUARTERLY SUPPLEMENTARY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Data [Abstract]
Total revenues	$ 310,898	$ 282,121	$ 297,803	$ 177,805	$ 293,374	$ 298,055	$ 304,197	$ 305,539	$ 1,068,627	$ 1,201,165	$ 1,070,166
Income (loss) before income taxes	(13,524)	(55,228)	4,236	(104,999)	(28,699)	(4,528)	(4,571)	54,677	(169,515)	16,879	(9,150)
Net income (loss)	$ (8,891)	$ (37,241)	$ 5,960	$ (72,534)	$ (23,163)	$ (2,342)	$ (4,196)	$ 44,521	$ (112,706)	$ 14,820	$ 2,255
Basic earnings (loss) per share (in dollars per share)	$ (0.36)	$ (1.49)	$ 0.24	$ (2.90)	$ (0.93)	$ (0.09)	$ (0.17)	$ 1.77	$ (4.50)	$ 0.59	$ 0.09
Diluted earnings (loss) per share (in dollars per share)	$ (0.36)	$ (1.49)	$ 0.24	$ (2.90)	$ (0.93)	$ (0.09)	$ (0.17)	$ 1.74	$ (4.50)	$ 0.58	$ 0.09

EARNINGS PER COMMON SHARE (Deta

EARNINGS PER COMMON SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basic and Diluted Earnings per Share [Line Items]
Net income (loss) from continuing operations	$ (8,891)	$ (37,241)	$ 5,960	$ (72,534)	$ (23,163)	$ (2,342)	$ (4,196)	$ 44,521	$ (112,706)	$ 14,820	$ 2,255
Weighted-average common shares outstanding (in shares)									25,027,358	25,138,039	25,006,211
Weighted-average common shares, diluted (in shares)									25,027,358	25,582,527	25,622,812
Earnings per common share from continuing operations, basic (in dollars per share)	$ (0.36)	$ (1.49)	$ 0.24	$ (2.90)	$ (0.93)	$ (0.09)	$ (0.17)	$ 1.77	$ (4.50)	$ 0.59	$ 0.09
Earnings per common share from continuing operations, diluted (in dollars per share)	$ (0.36)	$ (1.49)	$ 0.24	$ (2.90)	$ (0.93)	$ (0.09)	$ (0.17)	$ 1.74	(4.50)	0.58	0.09
Earnings per common share from discontinued operations, basic (in dollars per share)									0	0	(0.08)
Earnings per common share from discontinued operations, diluted (in dollars per share)									0	0	(0.07)
Gain on sale of discontinued operations, basic (in dollars per share)									0	0	1.10
Gain on sale of discontinued operations, diluted (in dollar per share)									0	0	1.07
Earnings per common share, basic (in dollars per share)									(4.50)	0.59	1.11
Earnings per common share, diluted (in dollars per share)									$ (4.50)	$ 0.58	$ 1.08
Awards excluded from diluted calculation (in shares)									618,379	63,897	2,681
Restricted Stock Awards
Basic and Diluted Earnings per Share [Line Items]
Add dilutive effect of restricted stock awards (in shares)									0	232,450	273,544
Stock Options
Basic and Diluted Earnings per Share [Line Items]
Add dilutive effect of restricted stock awards (in shares)									0	212,038	343,057

LEASE COMMITMENTS (Narrative) (

LEASE COMMITMENTS (Narrative) (Details)	Dec. 31, 2020
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms	1 year
Lease extension option terms	6 months
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms	6 years
Lease extension option terms	5 years

LEASE COMMITMENTS (Lease Costs)

LEASE COMMITMENTS (Lease Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Components of lease expense:
Operating lease expense	$ 7,611	$ 7,655
Less sublease income	292	493
Net lease expense	7,319	7,162
Operating cash outflow from operating leases	$ 7,053	$ 7,249

(Leases Balance Sheet and Suppl

(Leases Balance Sheet and Supplemental Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use assets (Other assets on Consolidated Balance Sheets)	$ 18,619	$ 15,410
Operating lease liabilities (Accrued expenses and other liabilities on Consolidated Balance Sheets)	19,244	15,851
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 7,264	$ 651
Weighted average remaining lease term	4 years 4 months 9 days	2 years 9 months
Weighted average discount rate	3.72%	4.74%
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets	us-gaap:OtherAssets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	ufcs:AccruedExpensesAndOtherLiabilities	ufcs:AccruedExpensesAndOtherLiabilities

(Leases Maturities of Lease Lia

(Leases Maturities of Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
2021	$ 6,889	$ 7,517
2022	4,610	5,311
2023	3,627	2,417
2024	1,763	1,318
2025	1,270	259
Thereafter	2,460	39
Total lease payments	20,619	16,861
Less imputed interest	(1,375)	(1,010)
Lease liability	$ 19,244	$ 15,851

DEBT (Narrative) (Details)

DEBT (Narrative) (Details) - USD ($)	Feb. 02, 2016	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 15, 2020	Mar. 31, 2020
New Credit Agreement
Line of Credit Facility [Line Items]
Interest expense incurred		$ 0
Option to increase, maximum amount						$ 100,000,000
Outstanding balance		0
Previous Credit Agreement
Line of Credit Facility [Line Items]
Interest expense incurred			$ 0	$ 0
Maximum borrowing capacity	$ 100,000,000
Outstanding balance			$ 0
Credit Facility | New Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity						50,000,000
Credit Facility | Previous Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 50,000,000
Debt instrument, term	4 years
Letter of Credit Subfacility | New Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity						20,000,000
Letter of Credit Subfacility | Previous Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 20,000,000
Swingline Subfacility | New Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 5,000,000
Swingline Subfacility | Previous Credit Agreement
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 5,000,000
Surplus Notes
Line of Credit Facility [Line Items]
Principal amount					$ 50,000,000
Interest expense incurred		133,000
Surplus Notes | Federated Mutual
Line of Credit Facility [Line Items]
Principal amount		35,000,000
Surplus Notes | Federated Life
Line of Credit Facility [Line Items]
Principal amount		$ 15,000,000

Debt (Interest Payable) (Detail

Debt (Interest Payable) (Details) - Surplus Notes	Dec. 31, 2020
A+
Financing Receivable, Credit Quality Indicator [Line Items]
Applicable Interest Rate	5.875%
A
Financing Receivable, Credit Quality Indicator [Line Items]
Applicable Interest Rate	6.375%
A-
Financing Receivable, Credit Quality Indicator [Line Items]
Applicable Interest Rate	6.875%
B++ (or lower)
Financing Receivable, Credit Quality Indicator [Line Items]
Applicable Interest Rate	7.375%

INTANGIBLE ASSETS (Intangible A

INTANGIBLE ASSETS (Intangible Assets) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill		$ 0	$ 15,091
Goodwill impairment	$ 15,091	15,091	0	$ 0
Net intangible assets		6,743	7,451
State insurance licenses
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets		3,020	3,020
Agency relationships
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		10,338	10,338
Accumulated amortization		(7,307)	(6,731)
Finite-lived intangible assets, net		3,031	3,607
Software
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		3,260	3,260
Accumulated amortization		(3,260)	(3,260)
Finite-lived intangible assets, net		0	0
Trade names
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		1,978	1,978
Accumulated amortization		(1,286)	(1,154)
Finite-lived intangible assets, net		692	824
Favorable contract
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross		286	286
Accumulated amortization		(286)	(286)
Finite-lived intangible assets, net		$ 0	$ 0

INTANGIBLE ASSETS (Estimated Us

INTANGIBLE ASSETS (Estimated Useful Lives) (Details)	12 Months Ended
	Dec. 31, 2020
Agency relationships
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years
Software
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years
Trade names
Finite-Lived Intangible Assets [Line Items]
Useful Life	15 years
Favorable contract
Finite-Lived Intangible Assets [Line Items]
Useful Life	2 years

INTANGIBLE ASSETS (Future Amort

INTANGIBLE ASSETS (Future Amortization Expense) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Estimated Aggregate Amortization Expense
2021	$ 709
2022	709
2023	709
2024	709
2025	$ 709

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year	$ 910,472	$ 888,375	$ 973,373
Change in accumulated other comprehensive income before reclassifications	51,753	38,869	(20,123)
Reclassification adjustments from accumulated other comprehensive income	2,005	4,755	5,867
Balance, end of year	825,149	910,472	888,375
Cumulative effect of change in accounting principle
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year	(30)	(514)	0
Balance, end of year		(30)	(514)
Net unrealized appreciation on investments
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year	47,279	(9,323)	214,865
Change in accumulated other comprehensive income before reclassifications	37,173	55,399	(33,564)
Reclassification adjustments from accumulated other comprehensive income	(1,382)	1,203	620
Balance, end of year	83,070	47,279	(9,323)
Net unrealized appreciation on investments | Cumulative effect of change in accounting principle
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year			(191,244)
Liability for underfunded employee benefit costs
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year	(34,127)	(21,149)	(46,551)
Change in accumulated other comprehensive income before reclassifications	14,580	(16,530)	20,155
Reclassification adjustments from accumulated other comprehensive income	3,388	3,552	5,247
Balance, end of year	(16,159)	(34,127)	(21,149)
Liability for underfunded employee benefit costs | Cumulative effect of change in accounting principle
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year			0
Accumulated other comprehensive income, net of tax
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year	13,152	(30,472)	168,314
Change in accumulated other comprehensive income before reclassifications	51,753	38,869	(13,409)
Reclassification adjustments from accumulated other comprehensive income	2,006	4,755	5,867
Balance, end of year	$ 66,911	$ 13,152	(30,472)
Accumulated other comprehensive income, net of tax | Cumulative effect of change in accounting principle
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of year			$ (191,244)

DISCONTINUED OPERATIONS (Narrat

DISCONTINUED OPERATIONS (Narrative) (Details) - USD ($) $ in Thousands	Mar. 30, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of discontinued operations, net of taxes		$ 0	$ 0	$ 27,307
United Life Insurance Company | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds	$ 280,000
Adjustment to proceeds from divestiture	21
Proceeds from divestiture of business	279,979
Gain on sale of discontinued operations, net of taxes	$ 27,307
Transition services agreement duration (up to)	24 months
Proceeds from TSA	$ 1,019

DISCONTINUED OPERATIONS (Statem

DISCONTINUED OPERATIONS (Statements of Income) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Benefits, Losses and Expenses
Federal income tax expense	$ 0	$ 0	$ 563
Net income (loss) from discontinued operations	$ 0	$ 0	$ (1,912)
Earnings (loss) per common share from discontinued operations:
Basic (in dollars per share)	$ 0	$ 0	$ (0.08)
Diluted (in dollars per share)	$ 0	$ 0	$ (0.07)
United Life Insurance Company | Discontinued Operations, Disposed of by Sale
Revenues
Net premiums earned	$ 0	$ 0	$ 13,003
Investment income, net of investment expenses	0	0	12,663
Total net realized investment gains (losses)	0	0	(1,057)
Other income	0	0	146
Total revenues	0	0	24,755
Benefits, Losses and Expenses
Losses and loss settlement expenses	0	0	10,823
Increase in liability for future policy benefits	0	0	5,023
Amortization of deferred policy acquisition costs	0	0	1,895
Other underwriting expenses	0	0	3,864
Interest on policyholders’ accounts	0	0	4,499
Total benefits, losses and expenses	0	0	26,104
Income (loss) from discontinued operations before income taxes	0	0	(1,349)
Federal income tax expense	0	0	563
Net income (loss) from discontinued operations	$ 0	$ 0	$ (1,912)
Earnings (loss) per common share from discontinued operations:
Basic (in dollars per share)	$ 0	$ 0	$ (0.08)
Diluted (in dollars per share)	$ 0	$ 0	$ (0.07)

Schedule I. Summary of Invest_2

Schedule I. Summary of Investments - Other than Investments in Related Parties (Details) $ in Thousands	Dec. 31, 2020USD ($)
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	$ 1,891,061
Fair Value	2,150,540
Amounts at Which Shown in Balance Sheet	2,149,217
Fixed Maturities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	1,720,291
Fair Value	1,825,443
Amounts at Which Shown in Balance Sheet	1,825,438
United States Government and government agencies and authorities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	209,983
Fair Value	214,456
Amounts at Which Shown in Balance Sheet	214,456
States, municipalities and political subdivisions
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	824,545
Fair Value	884,700
Amounts at Which Shown in Balance Sheet	884,700
Foreign governments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	27,799
Fair Value	29,602
Amounts at Which Shown in Balance Sheet	29,602
Public utilities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	76,114
Fair Value	83,502
Amounts at Which Shown in Balance Sheet	83,502
All other bonds
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	581,850
Fair Value	613,183
Amounts at Which Shown in Balance Sheet	613,178
Redeemable preferred stock
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	0
Fair Value	0
Amounts at Which Shown in Balance Sheet	0
Equity Securities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	49,085
Fair Value	206,685
Amounts at Which Shown in Balance Sheet	206,685
Public utilities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	3,760
Fair Value	16,320
Amounts at Which Shown in Balance Sheet	16,320
Banks, trusts and insurance companies
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	7,853
Fair Value	69,577
Amounts at Which Shown in Balance Sheet	69,577
Industrial, miscellaneous and all other
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	36,877
Fair Value	120,193
Amounts at Which Shown in Balance Sheet	120,193
Nonredeemable preferred stocks
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	595
Fair Value	595
Amounts at Which Shown in Balance Sheet	595
Mortgage loans on real estate
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	47,690
Fair Value	48,932
Amounts at Which Shown in Balance Sheet	47,614
Other long-term investments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	73,820
Fair Value	69,305
Amounts at Which Shown in Balance Sheet	69,305
Short-term investments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	175
Fair Value	175
Amounts at Which Shown in Balance Sheet	$ 175

Schedule II. Condensed Financ_2

Schedule II. Condensed Financial Statements of Parent Company (Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	$ 1,825,438	$ 1,719,607
Cash and cash equivalents	87,948	120,722
Other assets	37,196	29,905
Total assets	3,069,678	3,013,472
Liabilities and stockholders' equity
Liabilities	2,244,529	2,103,000
Stockholders' equity
Common Stock, Value, Issued	25	25
Additional paid-in capital	202,359	200,179
Retained earnings	555,854	697,116
Accumulated other comprehensive income, net of tax	66,911	13,152
Total stockholders' equity	825,149	910,472	$ 888,375	$ 973,373
Total liabilities and stockholders' equity	3,069,678	3,013,472
United Fire Group, Inc.
Assets
Available-for-sale, at fair value (amortized cost $1,720,291 in 2020 and $1,659,760 in 2019; allowance for credit losses $5 in 2020 and $— in 2019)	150	150
Investment in subsidiary	818,581	880,485
Cash and cash equivalents	6,504	29,878
Other assets	15	3
Total assets	825,250	910,516
Liabilities and stockholders' equity
Liabilities	101	44
Stockholders' equity
Common Stock, Value, Issued	25	25
Additional paid-in capital	202,359	200,179
Retained earnings	555,854	697,116
Accumulated other comprehensive income, net of tax	66,911	13,152
Total stockholders' equity	825,149	910,472
Total liabilities and stockholders' equity	$ 825,250	$ 910,516

Schedule II. Condensed Financ_3

Schedule II. Condensed Financial Statements of Parent Company (Condensed Balance Sheets) (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Condensed Balance Sheet Statements, Captions [Line Items]
Fixed maturities, Available-for-sale securities, amortized cost	$ 1,720,291	$ 1,659,760
Common stock, par value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	25,055,479	25,015,963
Common stock, shares outstanding (in shares)	25,055,479	25,015,963
United Fire Group, Inc.
Condensed Balance Sheet Statements, Captions [Line Items]
Fixed maturities, Available-for-sale securities, amortized cost	$ 150	$ 150
Common stock, par value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	25,055,479	25,015,963
Common stock, shares outstanding (in shares)	25,055,479	25,015,963

Schedule II. Condensed Financ_4

Schedule II. Condensed Financial Statements of Parent Company (Condensed Statement of Income and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues
Investment income									$ 39,670	$ 60,414	$ 52,894
Total revenues	$ 310,898	$ 282,121	$ 297,803	$ 177,805	$ 293,374	$ 298,055	$ 304,197	$ 305,539	1,068,627	1,201,165	1,070,166
Expenses
Net income (loss)									(112,706)	14,820	27,650
Other comprehensive income (loss)
Change in unrealized appreciation on investments held by subsidiary									47,054	70,127	(50,985)
Change in liability for underfunded employee benefit plans of subsidiary									18,456	(20,924)	25,513
Other comprehensive income (loss), before tax and reclassification adjustments									65,510	49,203	(25,472)
Income tax effect									(13,757)	(10,334)	5,349
Reclassification adjustment for net realized (gains) losses included in income									(1,750)	1,521	784
Reclassification adjustment for employee benefit costs included in expense									4,289	4,497	6,642
Total reclassification adjustments, before tax									2,539	6,018	7,426
Income tax effect									(534)	(1,263)	(1,559)
Comprehensive income (loss)									(58,948)	58,444	13,394
United Fire Group, Inc.
Revenues
Investment income									141	295	396
Total revenues									141	295	396
Expenses
Other operating expenses									10	86	95
Total expenses									10	86	95
Income before income taxes and equity in net income of subsidiary									131	209	301
Federal income tax expense (benefit)									68	44	(1,165)
Net income before equity in net income (loss) of subsidiary									63	165	1,466
Equity in net income (loss) of subsidiary									(112,769)	14,655	26,184
Net income (loss)									(112,706)	14,820	27,650
Other comprehensive income (loss)
Change in unrealized appreciation on investments held by subsidiary									47,054	70,127	(50,985)
Change in liability for underfunded employee benefit plans of subsidiary									18,456	(20,924)	25,513
Other comprehensive income (loss), before tax and reclassification adjustments									65,510	49,203	(25,472)
Income tax effect									(13,757)	(10,334)	5,349
Other comprehensive income (loss), after tax, before reclassification adjustments									51,753	38,869	(20,123)
Reclassification adjustment for net realized (gains) losses included in income									(1,750)	1,521	784
Reclassification adjustment for employee benefit costs included in expense									4,289	4,497	6,642
Total reclassification adjustments, before tax									2,539	6,018	7,426
Income tax effect									(534)	(1,263)	(1,559)
Total reclassification adjustments, after tax									2,005	4,755	5,867
Comprehensive income (loss)									$ (58,948)	$ 58,444	$ 13,394

Schedule II. Condensed Financ_5

Schedule II. Condensed Financial Statements of Parent Company (Condensed Statement of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income (loss)	$ (112,706)	$ 14,820	$ 27,650
Adjustments to reconcile net income to net cash provided by operating activities
Other, net	9,602	(1,274)	9,847
Net cash provided by operating activities	41,435	93,752	110,104
Cash flows from investing activities
Net cash provided by (used in) investing activities	(92,871)	4,501	(19,204)
Cash flows from financing activities
Repurchase of common stock	(2,741)	(11,700)	(5,404)
Issuance of common stock	(71)	2,377	7,171
Net cash provided by (used in) financing activities	18,662	(41,985)	(115,188)
Net Change in Cash and Cash Equivalents	(32,774)	56,268	(24,288)
Cash and Cash Equivalents at Beginning of Year - Continuing Operations	120,722	64,454	95,562
Cash and Cash Equivalents at End of Year - Continuing Operations	87,948	120,722	64,454
United Fire Group, Inc.
Cash flows from operating activities
Net income (loss)	(112,706)	14,820	27,650
Adjustments to reconcile net income to net cash provided by operating activities
Equity in net income of subsidiary	112,769	(14,655)	(26,184)
Dividends received from subsidiary	4,000	57,000	105,000
Other, net	3,907	5,512	1,824
Total adjustments	120,676	47,857	80,640
Net cash provided by operating activities	7,970	62,677	108,290
Cash flows from investing activities
Net cash provided by (used in) investing activities	0	0	0
Cash flows from financing activities
Payment of cash dividends	(28,532)	(32,662)	(105,408)
Repurchase of common stock	(2,741)	(11,700)	(5,404)
Issuance of common stock	(71)	2,377	7,171
Net cash provided by (used in) financing activities	(31,344)	(41,985)	(103,641)
Net Change in Cash and Cash Equivalents	(23,374)	20,692	4,649
Cash and Cash Equivalents at Beginning of Year - Continuing Operations	29,878	9,186	4,537
Cash and Cash Equivalents at End of Year - Continuing Operations	$ 6,504	$ 29,878	$ 9,186

Schedule III. Supplementary I_2

Schedule III. Supplementary Insurance Information (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Deferred Policy Acquisition Costs		$ 87,094	$ 94,292	$ 92,796
Future Policy Benefits, Losses, Claims and Loss Expenses		1,578,131	1,421,754	1,312,483
Unearned Premiums		464,845	505,162	492,918
Earned Premium Revenue		1,055,082	1,086,972	1,050,454
Investment Income, Net		39,670	60,414	65,557
Benefits, Claims, Losses and Settlement Expenses		869,467	830,172	747,457
Amortization of Deferred Policy Acquisition Costs		210,252	216,199	208,127
Other Underwriting Expenses		143,332	137,415	145,337
Interest on Policyholders' Accounts		0	0	4,499
Premiums Written		1,011,350	1,096,730	1,061,664
Property and casualty business
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Deferred Policy Acquisition Costs		87,094	94,292	92,796
Future Policy Benefits, Losses, Claims and Loss Expenses		1,578,131	1,421,754	1,312,483
Unearned Premiums		464,845	505,162	492,918
Earned Premium Revenue		1,055,082	1,086,972	1,037,451
Investment Income, Net		39,670	60,414	52,894
Benefits, Claims, Losses and Settlement Expenses		869,467	830,172	731,611
Amortization of Deferred Policy Acquisition Costs		210,252	216,199	206,232
Other Underwriting Expenses		143,332	137,415	141,473
Interest on Policyholders' Accounts		0	0	0
Premiums Written		1,011,350	1,096,730	1,061,664
Discontinued Operations | Life Insurance
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Line Items]
Deferred Policy Acquisition Costs	[1]	0	0	0
Future Policy Benefits, Losses, Claims and Loss Expenses	[1]	0	0	0
Unearned Premiums	[1]	0	0	0
Earned Premium Revenue	[1]	0	0	13,003
Investment Income, Net	[1]	0	0	12,663
Benefits, Claims, Losses and Settlement Expenses	[1]	0	0	15,846
Amortization of Deferred Policy Acquisition Costs	[1]	0	0	1,895
Other Underwriting Expenses	[1]	0	0	3,864
Interest on Policyholders' Accounts	[1]	0	0	4,499
Premiums Written	[1]	$ 0	$ 0	$ 0
[1]	Annuity deposits are included in future policy benefits, losses, claims and loss expenses

Schedule IV. Reinsurance (Detai

Schedule IV. Reinsurance (Details) - Property and casualty business - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Line Items]
Gross Amount	$ 1,106,327	$ 1,133,583	$ 1,083,981
Ceded to Other Companies	84,924	72,023	63,487
Assumed From Other Companies	33,679	25,412	16,957
Net Amount	$ 1,055,082	$ 1,086,972	$ 1,037,451
Percentage of Amount Assumed to Net Earned	3.19%	2.34%	1.63%

Schedule V. Valuation and Qua_2

Schedule V. Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for bad debts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		$ 1,239	$ 785	$ 1,255
Charged to costs and expenses		0	454	0
Deductions		552	0	470
Balance at end of period		687	1,239	785
Deferred tax asset valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	[1]	0	0	329
Charged to costs and expenses	[1]	0	0	0
Deductions	[1]	0	0	329
Balance at end of period	[1]	$ 0	$ 0	$ 0
[1]	Recorded in connection with the purchase of American Indemnity Financial Corporation in 1999

Schedule_VI. Supplemental Inf_2

Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Net Realized Investment Gains (Losses)	$ (32,395)	$ 53,779	$ (20,179)
Claims and Claim Adjustment Expenses Incurred Related to: Current Year	887,119	835,507	785,778
Claims and Claim Adjustment Expenses Incurred Related to: Prior Years	(17,652)	(5,335)	(54,167)
Consolidated Property and Casualty Insurance Entity
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Deferred Policy Acquisition Costs	87,094	94,292	92,796
Reserves for Unpaid Claims and Claim Adjustment Expenses	1,578,131	1,421,754	1,312,483
Unearned Premiums	464,845	505,162	492,928
Earned Premiums	1,055,082	1,086,972	1,037,451
Net Realized Investment Gains (Losses)	(32,395)	53,779	(20,179)
Net Investment Income	39,670	60,414	52,894
Claims and Claim Adjustment Expenses Incurred Related to: Current Year	887,119	835,507	785,778
Claims and Claim Adjustment Expenses Incurred Related to: Prior Years	(17,652)	(5,335)	(54,167)
Amortization of Deferred Policy Acquisition Costs	210,252	216,699	206,232
Paid Claims and Claim Adjustment Expenses	776,397	732,343	640,534
Premiums Written	$ 1,011,350	$ 1,096,730	$ 1,061,664