Protective Insurance (PTVCA) 10-K 11 Mar 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 08, 2021	Jun. 30, 2020
Entity Information [Line Items]
Entity Registrant Name	PROTECTIVE INSURANCE CORP
Entity Central Index Key	0000009346
Current Fiscal Year End Date	--12-31
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity File Number	0-5534
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-0160330
Entity Address, Address Line One	111 Congressional Boulevard
Entity Address, City or Town	Carmel
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46032
City Area Code	317
Local Phone Number	636-9800
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 149,681,000
Entity Common Stock, Shares Outstanding		14,156,151
Common Class A (voting) [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class A Common Stock, No Par Value
Trading Symbol	PTVCA
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		2,603,350
Common Class B (non-voting) [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class B Common Stock, No Par Value
Trading Symbol	PTVCB
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		11,552,801

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investments:
Fixed income securities (Amortized cost: $894,468, $783,047; allowance for credit losses of $1,035 and $0)	$ 919,692	$ 795,538
Equity securities	58,169	76,812
Limited partnerships	7,214	23,292
Commercial mortgage loans (less allowance of $195 and $0)	10,602	11,782
Short-term and other	1,000	1,000
Total Investments	996,677	908,424
Cash and cash equivalents	58,301	67,851
Restricted cash and cash equivalents	12,128	21,037
Accounts receivable (less allowance of $19,960 and $2,233)	100,921	111,762
Accrued investment income	4,816	4,882
Reinsurance recoverable (less allowance of $972 and $1,171)	455,564	432,067
Prepaid reinsurance premiums	11,747	5,820
Deferred policy acquisition costs	9,744	8,496
Property and equipment (less accumulated depreciation of $25,959 and $20,091)	38,144	42,542
OtherAssets	25,805	24,566
Current federal income taxes	0	4,878
Deferred federal income taxes	8,980	2,035
Total Assets	1,722,827	1,634,360
Reserves:
Losses and loss expenses	1,089,669	988,305
Unearned premiums	63,731	74,810
Total Reserves	1,153,400	1,063,115
Reinsurance payable	76,617	65,835
Short-term borrowings	20,000	20,000
Depository liabilities	110	18
AccountsPayableAndOtherAccruedLiabilities	108,852	121,076
Current federal income taxes payable	766	0
Total Liabilities	1,359,745	1,270,044
Shareholders' equity:
Additional paid-in capital	54,571	53,349
Accumulated other comprehensive income	21,759	9,369
Retained earnings	286,143	300,988
Total Shareholders' Equity	363,082	364,316
Total Liabilities and Shareholders' Equity	1,722,827	1,634,360
Class A Voting [Member]
Shareholders' equity:
Common stock	111	111
Class B Non-voting [Member]
Shareholders' equity:
Common stock	$ 498	$ 499

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets
Fixed maturities, amortized cost	$ 894,468	$ 783,047
Fixed maturities, allowance for credit losses	1,035	0
Commercial mortgage loans, allowance	195	0
Account receivable, allowance	19,960	2,233
Reinsurance recoverable, allowance for credit losses	972	1,171
Property and equipment, accumulated depreciation	$ 25,959	$ 20,091
Class A Voting [Member]
Shareholders' equity:
Common stock, shares authorized (in shares)	3,000,000	3,000,000
Common stock, shares outstanding (in shares)	2,603,350	2,603,350
Class B Non-voting [Member]
Shareholders' equity:
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares outstanding (in shares)	11,674,345	11,675,956

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Net premiums earned	$ 445,515	$ 447,288	$ 432,880
Net investment income	25,422	26,249	22,048
Commissions and other income	7,048	9,171	9,932
Net realized gains (losses) on investments, excluding impairment losses	(6,876)	2,455	(6,632)
Impairment losses on investments	(2,861)	(497)	(19)
Net unrealized gains (losses) on equity securities and limited partnership investments	501	10,931	(19,040)
Net realized and unrealized gains (losses) on investments	(9,236)	12,889	(25,691)
Total revenues	468,749	495,597	439,169
Expenses:
Losses and loss expenses incurred	318,958	348,468	345,864
Other operating expenses	143,428	138,456	137,177
Total expenses	462,386	486,924	483,041
Income (loss) before federal income tax expense (benefit)	6,363	8,673	(43,872)
Federal income tax expense (benefit)	1,900	1,326	(9,797)
Net income (loss)	$ 4,463	$ 7,347	$ (34,075)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.32	$ 0.51	$ (2.28)
Diluted (in dollars per share)	$ 0.31	$ 0.50	$ (2.28)
Weighted average number of shares outstanding:
Basic (in shares)	14,140,178	14,520,815	14,964,812
Dilutive effect of share equivalents (in shares)	129,806	99,118	0
Diluted (in shares)	14,269,984	14,619,933	14,964,812

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - 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
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 11,971	$ 3,281	$ 11,367	$ (22,156)	$ 3,771	$ (707)	$ 1,535	$ 2,748	$ 4,463	$ 7,347	$ (34,075)
Other comprehensive income (loss), net of tax:
Unrealized net gains (losses) on fixed income securities									12,141	16,071	(6,868)
Foreign currency translation adjustments									249	645	(830)
Other comprehensive income (loss)									12,390	16,716	(7,698)
Comprehensive income (loss)									$ 16,853	$ 24,063	$ (41,773)

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total	Class A [Member]Common Stock [Member]	Class B [Member]Common Stock [Member]	Class B [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Accumulated Other Comprehensive Income (Loss) [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Class A [Member]Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Class B [Member]Common Stock [Member]
Balance at January 1, 2018 at Dec. 31, 2017	$ 55,078	$ 46,391	$ 316,700	$ 418,811	$ 112	$ 530
Balance at January 1, 2018 (ASU 2016-01 [Member]) at Dec. 31, 2017								$ 0	$ (46,157)	$ 46,157	$ 0	$ 0	$ 0
Balance at January 1, 2018 (ASU 2018-02 [Member]) at Dec. 31, 2017								0	117	(117)	0	$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2017					2,623,000	12,424,000
Beginning balance (in shares) (ASU 2016-01 [Member]) at Dec. 31, 2017												0	0
Beginning balance (in shares) (ASU 2018-02 [Member]) at Dec. 31, 2017												0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	(34,075)	(34,075)	$ 0	$ 0
Foreign currency translation adjustment, net of tax	0	(830)	0	(830)	0	0
Change in unrealized gain (loss) on investments, net of tax	0	(6,868)	0	(6,868)	0	0
Common stock dividends	0	0	(16,835)	(16,835)	0	0
Repurchase of common stock	(832)	0	(3,755)	(4,596)	$ 0	$ (9)
Repurchase of common stock (in shares)					(8,000)	(192,000)
Restricted stock grants	474	0	0	475	$ 0	$ 1
Restricted stock grants (in shares)					0	22,000
Balance at December 31, 2019 at Dec. 31, 2018	54,720	(7,347)	308,075	356,082	$ 112	$ 522
Ending balance (in shares) at Dec. 31, 2018					2,615,000	12,254,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	7,347	7,347	$ 0	$ 0
Foreign currency translation adjustment, net of tax	0	645	0	645	0	0
Change in unrealized gain (loss) on investments, net of tax	0	16,071	0	16,071	0	0
Common stock dividends	0	0	(5,857)	(5,857)	0	0
Repurchase of common stock	(2,896)	0	(8,577)	(11,501)	$ (1)	$ (27)
Repurchase of common stock (in shares)					(12,000)	(665,000)
Restricted stock grants	1,525	0	0	1,529	$ 0	$ 4
Restricted stock grants (in shares)					0	87,000
Balance at December 31, 2019 at Dec. 31, 2019	53,349	9,369	300,988	364,316	$ 111	$ 499
Balance at December 31, 2019 (ASU 2016-13 [Member]) at Dec. 31, 2019								$ 0	$ 0	$ (12,281)	$ (12,281)	$ 0	$ 0
Ending balance (in shares) at Dec. 31, 2019					2,603,000	11,676,000
Ending balance (in shares) (ASU 2016-13 [Member]) at Dec. 31, 2019												0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	0	0	4,463	4,463	$ 0	$ 0
Foreign currency translation adjustment, net of tax	0	249	0	249	0	0
Change in unrealized gain (loss) on investments, net of tax	0	12,141	0	12,141	0	0
Common stock dividends	0	0	(5,813)	(5,813)	0	0
Repurchase of common stock	(563)	0	(1,214)	(1,782)	$ 0	$ (5)
Repurchase of common stock (in shares)					0	(127,000)	(126,764)
Restricted stock grants	1,785	0	0	1,789	$ 0	$ 4
Restricted stock grants (in shares)					0	126,000
Balance at December 31, 2019 at Dec. 31, 2020	$ 54,571	$ 21,759	$ 286,143	$ 363,082	$ 111	$ 498
Ending balance (in shares) at Dec. 31, 2020					2,603,000	11,675,000

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities
Net income (loss)	$ 4,463	$ 7,347	$ (34,075)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Change in accounts receivable and unearned premium	(9,024)	(3,835)	(3,904)
Change in accrued investment income	65	(524)	(199)
Change in reinsurance recoverable on paid losses	(3,799)	(19,083)	956
Change in losses and loss expenses reserves, net of reinsurance	75,103	100,648	117,027
Change in other assets, other liabilities and current income taxes	(2,322)	10,140	8,204
Amortization of net policy acquisition costs	55,183	55,802	54,981
Net policy acquisition costs deferred	(56,431)	(57,731)	(55,940)
Provision for deferred income tax expense (benefit)	(5,244)	(51)	(18,794)
Bond amortization	(26)	(725)	184
Depreciation	5,869	6,052	6,102
Net realized and unrealized (gains) losses on investments	9,236	(12,889)	25,691
Compensation expense related to restricted stock	1,789	1,529	475
Net cash provided by operating activities	74,862	86,680	100,708
Investing activities
Purchases of fixed income securities and equity securities	(392,223)	(423,544)	(415,326)
Purchases of limited partnership interests	0	0	(450)
Distributions from limited partnerships	14,636	33,396	6,869
Proceeds from maturities	136,390	84,387	64,035
Proceeds from sales of fixed income securities	103,938	139,310	241,429
Proceeds from sales of equity securities	51,713	21,621	149,195
Purchase of insurance company-owned life insurance	0	0	(10,000)
Purchase of commercial mortgage loans	(555)	(7,082)	(6,672)
Proceeds from commercial mortgage loans	1,539	1,972	0
Purchases of property and equipment	(1,470)	(1,953)	(5,439)
Proceeds from disposals of property and equipment	0	3	10
Net cash provided by (used in) investing activities	(86,032)	(151,890)	23,651
Financing activities
Dividends paid to shareholders	(5,692)	(5,857)	(16,835)
Repurchase of common shares	(1,782)	(11,501)	(4,596)
Net cash used in financing activities	(7,474)	(17,358)	(21,431)
Effect of foreign exchange rates on cash and cash equivalents	185	645	(830)
Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	(18,459)	(81,923)	102,098
Cash, cash equivalents and restricted cash and cash equivalents at beginning of year	88,888	170,811	68,713
Cash, cash equivalents and restricted cash and cash equivalents at end of year	70,429	88,888	170,811
Supplemental Disclosures of Cash Flow Information
Cash paid (refunds received) for income taxes	1,500	(1,186)	9,500
Cash paid for interest	$ 433	$ 723	$ 504

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note A - Summary of Significant Accounting Policies Description of Business: The term “Insurance Subsidiaries,” as used throughout this Annual Report on Form 10-K, refers to Protective Insurance Company, Protective Specialty Insurance Company, Sagamore Insurance Company and B&L Insurance, Ltd. Effective August 1, 2018, the Company changed its name to Protective Insurance Corporation to better align its holding company's and Insurance Subsidiaries' identities and to reflect its position within the insurance industry. Basis of Presentation: Use of Estimates: Cash and Cash Equivalents: Investments : Commercial mortgage loans are carried primarily at amortized cost along with an allowance for losses when necessary. These investments represent interests in commercial mortgage loans originated and serviced by a third party of which the Company shares, on a pro-rata basis, in all related cash flows of the underlying mortgage loans. The Company recorded an allowance of $195 on its commercial mortgage loans as of December 31, 2020 in conjunction with the adoption of the credit losses accounting standard discussed below. The Company accounts for investments in limited partnerships using the equity method of accounting, which requires an investor in a limited partnership to record its proportionate share of the limited partnership's net income. To the extent the limited partnerships include both realized and unrealized investment gains or losses in the determination of net income or loss, then the Company would also recognize, through its consolidated statements of operations, its proportionate share of the investee's unrealized, as well as realized, investment gains or losses within net unrealized gains (losses) on equity securities and limited partnership investments. Short-term and other investments are carried at cost, which approximates their fair values. Fixed income securities are considered to be available-for-sale. The related unrealized net gains or losses (net of applicable tax effects) on fixed income securities are reflected directly in other comprehensive income (loss) within shareholders' equity. Included within available-for-sale fixed income securities are convertible debt securities. A portion of the changes in the fair values of convertible debt securities is reflected as a component of net realized gains (losses) on investments, excluding impairment losses within the consolidated statements of operations. Realized gains and losses on disposals of fixed income securities are recorded on the trade date. Realized gains and losses on fixed income securities are determined by the specific identification of the cost of investments sold and are included in net realized gains (losses) on investments, excluding impairment losses. Equity securities are recorded at fair value, with unrealized net gains or losses reflected as a component of net unrealized gains (losses) on equity securities and limited partnership investments within the consolidated statements of operations. Realized gains and losses on disposals of equity securities are recorded on the trade date and included in net realized gains (losses) on investments, excluding impairment losses. Investment Impairments: For a fixed income security that the Company does not intend to sell or in cases where it is more likely than not that the Company will not have to sell the security, the Company separates the credit loss component of the impairment from the amount related to all other factors and reports the credit loss component within net realized gains (losses) on investments, excluding impairment losses in the consolidated statements of operations. The impairment related to all other factors (non-credit factors) is reported in other comprehensive income (loss). The allowance is adjusted for any additional credit losses and subsequent recoveries. Upon recognizing a credit loss, the cost basis is not adjusted. The Company considers the extent to which fair value is below amortized cost in determining whether a credit-related loss exists. The Company also considers the credit quality rating of the security, focusing on those below investment grade, with emphasis on securities downgraded below investment grade. The credit loss is determined by comparing the net present value of projected future cash flows with the amortized cost basis of the fixed income security. The net present value is calculated by discounting the Company's best estimate of projected future cash flows at the appropriate effective interest rate. Additionally, the Company may conclude that a qualitative analysis is sufficient to support its conclusion that the present value of the expected cash flows equals or exceeds a security’s amortized cost. The Company reports investment income due and accrued separately from available-for-sale fixed income securities and has elected not to measure an allowance for credit losses for investment income due and accrued. Investment income due and accrued is written off through net realized gains (losses) on investments, excluding impairment losses at the time the issuer defaults or is expected to default on payments. Deductible Receivables : Property and Equipment: Goodwill and Other Intangible Assets: Reserves for Losses and Loss Expenses: Recognition of Revenue and Costs: Reinsurance Should impairment in the ability of a reinsurer to satisfy its obligations to the Company be determined to exist, current year operations would be charged in amounts sufficient to provide for the Company's additional liability. Such charges, when incurred, are included in other operating expenses, rather than losses and loss expenses incurred, because the inability of the Company to collect from reinsurers is a credit risk rather than a deficiency associated with the loss reserving process. Deferred Taxes: Restricted Stock: Earnings (Loss) Per Share: Comprehensive Income (Loss): Fair Value Measurements: Insurance Company-Owned Life Insurance: Recently Adopted Accounting Pronouncements: In February 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), or ASU 2016-02. ASU 2016-02 superseded the prior lease guidance in ASC Topic 840, Leases. Under the new guidance, lessees are required to recognize for all leases, with the exception of short-term leases, a lease liability, which is a lessee's obligation to make lease payments arising from a lease, measured on a discounted basis. Concurrently, lessees are required to recognize a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. The guidance provided for a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative periods presented in the financial statements. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, or ASU 2018-11, which provided adopters an additional transition method by allowing entities to initially apply ASU 2016-02, and subsequent related standards, at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company adopted the new guidance on January 1, 2019 utilizing the transition method allowed per ASU 2018-11, and accordingly, comparative period financial information was not adjusted for the effects of the new guidance. No cumulative-effect adjustment was required to the opening balance of retained earnings on the adoption date. The Company's adoption of the new standard did not have any impact on the Company's consolidated statements of operations or cash flows. As of December 31, 2020 the Company had a right-of-use asset and a lease liability recorded within the consolidated balance sheet, each of approximately $120, which are included within other assets and accounts payable and other liabilities. In July 2018, the FASB issued ASU No. 2018-09, Codification Improvements. This update provided clarification, corrected errors in and made minor improvements to various ASC topics. Many of the amendments in this update had transition guidance with effective dates for annual periods beginning after December 15, 2018, and some amendments in this update did not require transition guidance and were effective upon issuance of this update. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, or ASU 2016-13. ASU 2016-13 introduced a current expected credit loss (CECL) model for measuring expected credit losses for certain types of financial instruments held at the reporting date requiring significant judgment in application based on historical experience, current conditions and reasonable supportable forecasts, but is not prescriptive about certain aspects of estimating expected losses. The guidance replaced the current incurred loss model for measuring expected credit losses and provided for additional disclosure requirements. Subsequently, the FASB issued additional ASUs on Topic 326 that did not change the core principle of the guidance in ASU 2016-13, but provided clarification and implementation guidance on certain aspects of ASU 2016-13, and have the same effective date and transition requirements as ASU 2016-13. The Company adopted the guidance recognized an pre-tax cumulative effect adjustment of $ ($ , net of tax), The updated guidance in ASU 2016-13 also amended the previous other-than-temporary impairment (“OTTI”) model for available-for-sale fixed income securities by requiring the recognition of impairments relating to credit losses through an allowance account and limits the amount of credit loss to the difference between a security’s amortized cost basis and its fair value. In addition, the length of time a security has been in an unrealized loss position will no longer impact the determination of whether a credit loss exists. The Company adopted the guidance related to available-for-sale fixed income securities on January 1, 2020 using a prospective transition approach for available-for-sale fixed income securities that were purchased with credit deterioration or had recognized an OTTI write-down prior to the effective date. The effect of the prospective transition approach was to maintain the same amortized cost basis before and after the effective date. I n August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, or ASU 2018-13. This update removed the disclosure requirements for the amounts of and the reasons for transfers between Level 1 and Level 2 and disclosure of the policy for timing of transfers between levels. This update also removed disclosure requirements for the valuation processes for Level 3 fair value measurements. Additionally, this update added disclosure requirements for the changes in unrealized gains and losses for recurring Level 3 fair value measurements and quantitative information for certain unobservable inputs in Level 3 fair value measurements. The Company adopted ASU 2018-13 as of January 1, 2020. As the requirements of this guidance are applicable to disclosure only, the adoption of ASU 2018-13 had no material impact on the Company's consolidated financial statements. Recently Issued Accounting Pronouncements: In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, or ASU 2019-12. Among other items, the amendments in ASU 2019-12 simplify the accounting treatment of tax law changes and year-to-date losses in interim periods. An entity generally recognizes the effects of a change in tax law in the period of enactment; however, there is an exception for tax laws with delayed effective dates. Under current guidance, an entity may not adjust its annual effective tax rate for a tax law change until the period in which the law is effective. This exception was removed under ASU 2019-12, thereby providing that all effects of a tax law change are recognized in the period of enactment, including adjustment of the estimated annual effective tax rate. Regarding year-to-date losses in interim periods, an entity is required to estimate its annual effective tax rate for the full fiscal year at the end of each interim period and use that rate to calculate its income taxes on a year-to-date basis. However, current guidance provides an exception that when a loss in an interim period exceeds the anticipated loss for the year, the income tax benefit is limited to the amount that would be recognized if the year-to-date loss were the anticipated loss for the full year. ASU 2019-12 removes this exception and provides that in this situation, an entity would compute its income tax benefit at each interim period based on its estimated annual effective tax rate. ASU 2019-12 became effective on January 1, 2021 and is not expected to have a material effect on the Company's consolidated financial statements.

Investments

Investments	12 Months Ended
	Dec. 31, 2020
Investments [Abstract]
Investments	Note B - Investments The following is a summary of available-for-sale securities at December 31: Fair Value Cost or Amortized Cost Allowance for Credit Losses Gross Unrealized Gains Gross Unrealized Losses Net Unrealized Gains (Losses) December 31, 2020 Fixed income securities Agency collateralized mortgage obligations $ 11,931 $ 11,448 $ – $ 483 $ – $ 483 Agency mortgage-backed securities 102,107 99,060 – 3,062 (15 ) 3,047 Asset-backed securities 107,696 108,686 – 596 (1,586 ) (990 ) Bank loans 11,361 11,590 – 128 (357 ) (229 ) Collateralized mortgage obligations 5,118 5,061 – 151 (94 ) 57 Corporate securities 360,241 344,059 – 16,380 (198 ) 16,182 Mortgage-backed securities 38,056 40,675 (1,035 ) 659 (2,243 ) (1,584 ) Municipal obligations 45,143 43,353 – 1,820 (30 ) 1,790 Non-U.S. government obligations 30,600 29,882 – 718 – 718 U.S. government obligations 207,439 200,654 – 7,000 (215 ) 6,785 Total fixed income securities $ 919,692 $ 894,468 $ (1,035 ) $ 30,997 $ (4,738 ) $ 26,259 Fair Value Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Net Unrealized Gains (Losses) December 31, 2019 Fixed income securities Agency collateralized mortgage obligations $ 12,093 $ 11,557 $ 536 $ – $ 536 Agency mortgage-backed securities 56,280 54,286 2,005 (11 ) 1,994 Asset-backed securities 106,397 107,028 499 (1,130 ) (631 ) Bank loans 14,568 14,932 106 (470 ) (364 ) Certificates of deposit 2,835 2,835 – – – Collateralized mortgage obligations 5,616 5,123 493 – 493 Corporate securities 281,381 274,340 7,492 (451 ) 7,041 Mortgage-backed securities 47,463 46,685 1,047 (269 ) 778 Municipal obligations 36,286 35,749 684 (147 ) 537 Non-U.S. government obligations 24,179 23,889 290 – 290 U.S. government obligations 208,440 206,623 2,891 (1,074 ) 1,817 Total fixed income securities $ 795,538 $ 783,047 $ 16,043 $ (3,552 ) $ 12,491 The following table summarizes, for available-for-sale fixed income securities in an unrealized loss position at December 31, 2020 and December 31, 2019, the aggregate fair value and gross unrealized loss categorized by the duration individual securities have been continuously in an unrealized loss position. 2020 2019 Number of Securities Fair Value Gross Unrealized Loss Number of Securities Fair Value Gross Unrealized Loss Fixed income securities: 12 months or less 100 $ 120,630 $ (3,405 ) 88 $ 108,387 $ (2,452 ) Greater than 12 months 24 33,065 (1,333 ) 69 66,860 (1,100 ) Total fixed income securities 124 $ 153,695 $ (4,738 ) 157 $ 175,247 $ (3,552 ) The fair value and the cost or amortized costs of fixed income investments at December 31, 2020, organized by contractual maturity, are shown below. Actual maturities may ultimately differ from contractual maturities because borrowers have, in some cases, the right to call or prepay obligations with or without call or prepayment penalties. Pre-refunded municipal bonds are classified based on their pre-refunded call dates. Fair Value Cost or Amortized Cost One year or less $ 117,017 12.7 % $ 115,774 12.9 % Excess of one year to five years 359,314 39.1 346,150 38.7 Excess of five years to ten years 161,700 17.6 151,446 16.9 Excess of ten years 21,871 2.4 22,264 2.6 Total contractual maturities 659,902 71.8 635,634 71.1 Asset-backed securities 259,790 28.2 258,834 28.9 Total $ 919,692 100.0 % $ 894,468 100.0 % Major categories of investment income for the years ended December 31, 2020, 2019 and 2018 are summarized as follows: 2020 2019 2018 Interest on fixed income securities $ 24,874 $ 24,620 $ 19,092 Dividends on equity securities 1,868 2,320 4,380 Money market funds, Short-term and other 1,070 1,976 1,529 27,812 28,916 25,001 Investment expenses (2,390 ) (2,667 ) (2,953 ) Net investment income $ 25,422 $ 26,249 $ 22,048 Following is a summary of the components of net realized and unrealized gains (losses) for the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Gross gains on available-for-sale fixed income securities during the period: $ 11,125 $ 11,009 $ 10,807 Gross losses on available-for-sale fixed income securities during the period: (9,943 ) (10,492 ) (14,367 ) Impairment losses on investments (2,861 ) (497 ) (19 ) Change in value of limited partnership investments (1,442 ) 1,644 (9,343 ) Gains (losses) on equity securities: Realized gains (losses) on equity securities sold during the period (1) (8,058 ) 1,938 (3,072 ) Unrealized gains (losses) on equity securities held at the end of the period 1,943 9,287 (9,697 ) Total realized and unrealized gains (losses) on equity securities (6,115 ) 11,225 (12,769 ) Net realized and unrealized gains (losses) on investments $ (9,236 ) $ 12,889 $ (25,691 ) (1) During 2018, the Company sold $149,195 in equity securities, resulting in a gain on sale of $51,900. The majority of these gains were included in unrealized gains within other comprehensive income (loss) at December 31, 2017 and, as a result of the adoption of ASU 2016-01, were reclassified to retained earnings as of January 1, 2018 and were therefore not recognized in the consolidated statements of operations for the year ended December 31, 2018. As discussed in Note A, the Company adopted the provisions of the new CECL model for measuring expected credit losses for available-for-sale fixed income securities as of January 1, 2020. The updated guidance amended the previous OTTI model for available-for-sale fixed income securities by requiring the recognition of impairments relating to credit losses through an allowance account on the consolidated balance sheet with a corresponding adjustment to earnings and limiting the amount of credit loss to the difference between a security’s amortized cost basis and its fair value. For those securities in an unrealized loss position throughout the year where the Company intended to sell the security at the balance sheet date, a write down to earnings of $1,826 was recorded during the year ended December 31, 2020. The Company also analyzed securities in an unrealized loss position for credit losses and recorded an allowance for credit losses of $1,035 as of December 31, 2020. The Company reviewed its remaining fixed income securities in an unrealized loss position as of December 31, 2020 and determined the losses were the result of non-credit factors, such as the increase in market volatility due to the disruption in global financial markets as a result of the novel coronavirus ("COVID-19") pandemic and responses to it. The Company currently does not intend to sell nor does it expect to be required to sell these securities before recovery of their amortized cost. Gain and loss activity for fixed income securities, as shown in the previous table, includes adjustments for impairment losses on investments for the years ended December 31, 2020, 2019 and 2018 summarized as follows: 2020 2019 2018 Cumulative charges to income at beginning of year $ 889 $ 930 $ 4,209 Write-downs based on objective and subjective criteria 1,826 497 19 Recovery of prior write-downs upon sale or disposal (909 ) (538 ) (3,298 ) Net pre-tax realized gain (loss) (917 ) 41 3,279 Cumulative charges to income at end of year $ 1,806 $ 889 $ 930 There is no primary market and only a limited secondary market for the Company's investments in limited partnerships and, in most cases, the Company is prohibited from disposing of its limited partnership interests for some period of time and generally must seek approval from the applicable general partner for any such disposal. Distributions of earnings from these partnerships are largely at the sole discretion of the general partners, and distributions are generally not received by the Company for many years after the earnings have been reported. The Company has a commitment to contribute up to an additional $350 to a limited partnership as of December 31, 2020. The fair value of regulatory deposits with various insurance departments in the United States and Canada totaled $122,896 and $99,763 at December 31, 2020 and 2019, respectively. Short-term investments at December 31, 2020 included $1,000 in certificates of deposit issued by a Bermuda bank. The Company's fixed income securities are over 93% invested in investment grade fixed income investments. The Company has no fixed income investments that were originally issued with guarantees by a third-party insurance company nor does the Company have any direct exposure to any guarantor at December 31, 2020. Approximately $63,660 of fixed income investments (6.1% of the Company's consolidated investment portfolio, which includes money market instruments classified as cash equivalents) consists of non-rated bonds and bonds rated as less than investment grade at year-end. These investments have a $2,230 aggregate net unrealized gain position at December 31, 2020.

Loss and Loss Expense Reserves

Loss and Loss Expense Reserves	12 Months Ended
	Dec. 31, 2020
Loss and Loss Expense Reserves [Abstract]
Loss and Loss Expense Reserves	Note C - Loss and Loss Expense Reserves Activity in the reserves for losses and loss expenses for the years ended December 31, 2020, 2019 and 2018 is summarized as follows. All amounts are shown net of reinsurance, unless otherwise indicated. 2020 2019 2018 Reserves, gross of reinsurance recoverable, at the beginning of the year $ 988,305 $ 865,339 $ 680,274 Reinsurance recoverable on unpaid losses at the beginning of the year 398,305 375,935 308,143 Reserves at the beginning of the year 590,000 489,404 372,131 Provision for losses and loss expenses: Claims occurring during the current year 319,269 349,018 329,078 Claims occurring during prior years (311 ) (550 ) 16,786 Total incurred losses and loss expenses 318,958 348,468 345,864 Loss and loss expense payments: Claims occurring during the current year 77,880 90,364 84,738 Claims occurring during prior years 165,777 157,508 143,853 Total paid 243,657 247,872 228,591 Reserves at the end of the year 665,301 590,000 489,404 Reinsurance recoverable on unpaid losses at the end of the year 424,368 398,305 375,935 Reserves, gross of reinsurance recoverable, at the end of the year $ 1,089,669 $ 988,305 $ 865,339 The table above shows that a reserve savings of $311 developed during 2020 in the settlement of claims occurring on or before December 31, 2019, compared to a reserve savings of $550 in 2019 and reserve deficiencies of $16,786 in 2018. The developments for each year are composed of individual claim savings and deficiencies which, in the aggregate, have resulted from the settlement of claims at amounts higher or lower than previously reserved and from changes in estimates of losses incurred but not reported as part of the normal reserving process. The following table reconciles the triangles presented in this note to the total (savings) / deficiency for the Company of $311 shown in the table above: Prior Year (Savings) / Deficiency 2020 2019 2018 Workers' Compensation $ 1,431 $ (2,733 ) $ (9,601 ) Commercial Auto Liability 10,717 8,893 32,342 Occupational Accident (7,467 ) 688 (4,178 ) Physical Damage (1,684 ) (4,561 ) (1,066 ) Professional Liability Assumed 189 259 2,343 Other short-duration contracts (3,497 ) (3,096 ) (3,054 ) Total $ (311 ) $ (550 ) $ 16,786 The $311 prior accident year savings that developed during 2020 related to favorable loss development in the Company's occupational accident business, partially offset by unfavorable loss development in commercial automobile coverages. This 2020 savings compares to savings of $550 for 2019 related to favorable loss development in the Company's workers' compensation business, and a deficiency of $16,786 for 2018 related to unfavorable development from commercial automobile coverages. This unfavorable loss development was the result of increased claim severity due to a more challenging litigation environment, as well as an unexpected increase in the time to settle claims leading to an unfavorable change in claim settlement patterns. Loss reserves have been reduced by estimated salvage and subrogation recoverable of approximately $4,000 and $4,000 at December 31, 2020 and 2019, respectively. The following is information about incurred and paid claims development as of December 31, 2020, net of reinsurance, as well as cumulative claim frequency and the total of incurred‐but‐not‐reported liabilities plus expected development on reported claims included within the net incurred claims amounts. Workers' Compensation As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported Accident Year For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Claims Per Year 2011 $ 26,057 $ 26,628 $ 26,958 $ 26,767 $ 25,515 $ 27,293 $ 26,617 $ 26,631 $ 26,452 $ 26,356 $ 1,989 4,547 2012 23,965 25,544 24,887 24,485 25,616 27,020 26,775 25,508 26,397 2,327 4,484 2013 27,619 30,638 29,913 32,121 32,553 31,131 31,066 31,360 3,137 5,282 2014 36,768 36,968 34,009 33,427 31,031 31,579 31,551 3,772 5,413 2015 26,277 23,115 25,889 24,948 25,436 25,167 3,367 6,340 2016 35,240 29,757 29,317 30,060 29,785 3,693 6,087 2017 42,387 37,731 36,211 34,930 5,921 16,469 2018 62,973 61,530 62,451 13,632 14,295 2019 65,837 67,113 19,079 9,480 2020 60,204 34,084 7,550 Total $ 395,314 $ 91,001 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 4,916 $ 11,912 $ 15,973 $ 18,884 $ 20,617 $ 21,622 $ 22,569 $ 22,991 $ 23,366 $ 23,516 2012 4,597 11,004 14,834 17,415 18,946 20,276 21,157 21,636 21,850 2013 4,880 12,792 18,065 21,655 23,643 24,968 25,847 26,702 2014 5,328 13,665 19,075 22,387 23,968 24,714 25,507 2015 2,918 10,128 15,020 17,487 19,385 20,251 2016 5,784 13,377 18,461 21,304 23,113 2017 6,150 15,811 20,863 23,910 2018 10,987 27,862 36,794 2019 13,171 31,140 2020 10,508 Total $ 243,291 Outstanding liabilities prior to 2011, net of reinsurance 16,836 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 168,859 Commercial Liability As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Claims Per Year 2011 $ 46,829 $ 43,832 $ 31,633 $ 36,894 $ 35,805 $ 37,122 $ 36,076 $ 37,852 $ 37,795 $ 38,773 $ 21 2,902 2012 49,743 54,269 49,743 51,367 48,708 51,475 51,648 51,962 51,830 443 3,131 2013 53,817 39,143 37,701 36,371 46,690 48,857 51,598 51,293 270 3,753 2014 49,971 52,254 52,483 52,964 64,372 70,841 72,636 1,051 3,325 2015 61,420 70,174 64,323 71,088 75,503 77,225 1,736 3,198 2016 61,638 68,974 77,362 79,015 80,788 2,420 3,751 2017 103,126 103,611 99,287 97,663 12,197 5,403 2018 179,589 177,262 186,521 29,518 8,197 2019 198,022 195,273 53,842 8,313 2020 173,878 109,654 4,410 Total $ 1,025,880 $ 211,152 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 1,809 $ 11,350 $ 23,615 $ 30,795 $ 33,255 $ 34,009 $ 35,561 $ 36,400 $ 37,263 $ 37,267 2012 3,086 23,252 32,942 45,303 47,601 50,036 50,750 50,882 50,908 2013 5,167 15,772 25,270 34,481 44,865 46,084 49,522 49,879 2014 4,023 9,046 28,393 45,075 57,692 68,392 69,183 2015 10,923 27,582 49,267 63,133 71,697 74,276 2016 6,843 30,377 52,764 70,324 74,324 2017 11,415 46,529 58,173 73,496 2018 18,689 66,575 101,803 2019 19,311 64,294 2020 13,185 Total $ 608,615 Outstanding liabilities prior to 2011, net of reinsurance 3,433 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 420,698 Professional Liability Reinsurance Assumed (in runoff) As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported Accident Year For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Claims Per Year 2011 $ 10,492 $ 8,314 $ 9,017 $ 9,859 $ 10,779 $ 12,735 $ 12,744 $ 12,725 $ 13,018 $ 13,228 $ 219 N/A 2012 10,041 9,276 5,569 10,157 14,605 16,555 14,949 16,013 16,439 489 N/A 2013 14,370 13,034 11,618 17,694 23,256 22,213 23,474 23,381 1,764 N/A 2014 12,675 8,825 7,259 9,837 12,749 10,721 10,619 1,256 N/A 2015 11,638 7,859 7,147 10,422 8,753 8,404 1,959 N/A 2016 6,368 2,482 1,522 2,993 3,090 435 N/A 2017 – – – – – N/A 2018 – – – – N/A 2019 – – – N/A 2020 – – N/A Total $ 75,161 $ 6,122 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 50 $ 637 $ 2,061 $ 4,983 $ 8,104 $ 10,404 $ 11,679 $ 12,280 $ 12,404 $ 12,629 2012 103 992 2,388 5,077 8,355 11,239 13,091 13,706 14,403 2013 123 1,135 5,088 10,988 14,779 18,229 19,201 20,157 2014 723 761 2,241 3,999 6,627 7,732 8,890 2015 10 390 1,899 3,207 3,964 5,162 2016 – 5 99 2,254 2,496 2017 – – – – 2018 – – – 2019 – – 2020 – Total $ 63,737 Outstanding liabilities prior to 2011, net of reinsurance 534 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 11,958 Occupational Accident As of December 31, 2020 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported Accident Year For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims 2011 2012 2013 2014 2015 2016 2017 2018 2018 2020 Claims Per Year 2011 $ 6,249 $ 6,937 $ 6,485 $ 6,283 $ 6,151 $ 6,297 $ 6,264 $ 6,263 $ 6,287 $ 6,275 $ 2 472 2012 5,272 4,168 3,908 3,758 3,585 3,566 3,551 3,773 3,758 8 380 2013 6,410 5,044 4,403 4,390 4,166 4,107 4,082 4,082 – 337 2014 5,283 4,865 4,147 4,093 4,031 4,061 4,041 38 325 2015 3,897 3,539 3,715 3,846 3,832 3,698 111 275 2016 6,729 6,312 5,847 5,965 4,894 112 704 2017 17,041 13,334 12,976 11,031 111 1,040 2018 16,365 17,053 12,147 412 892 2018 10,498 11,134 1,469 882 2020 12,869 2,508 772 Total $ 73,929 $ 4,771 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 2,159 $ 4,861 $ 6,003 $ 6,050 $ 6,020 $ 6,278 $ 6,219 $ 6,232 $ 6,246 $ 6,267 2012 1,082 2,648 3,190 3,390 3,377 3,442 3,482 3,521 3,555 2013 1,989 3,565 3,768 4,108 4,110 4,107 4,082 4,082 2014 2,000 3,685 3,861 3,909 3,948 3,968 3,968 2015 739 1,934 2,670 2,988 3,224 3,285 2016 1,596 4,388 4,818 4,807 4,785 2017 3,229 7,756 9,126 9,645 2018 5,324 9,807 10,642 2019 4,007 7,782 2020 4,978 Total $ 58,989 Outstanding liabilities prior to 2011, net of reinsurance 99 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 15,039 Physical Damage (1) As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not- Reported Liabilities Plus Number of For the Years Ended December 31 (2018-2019 is Supplementary Information and Unaudited) Expected Development Reported Claims Accident Year 2018 2019 2020 on Reported Claims Per Year 2018 $ 53,726 $ 50,122 $ 49,767 $ 22 11,151 2019 – 55,354 54,126 141 10,472 2020 – 56,602 3,233 9,130 Total $ 160,495 $ 3,396 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2018-2019 is Supplementary Information and Unaudited) Accident Year 2018 2019 2020 2018 $ 41,631 $ 49,685 $ 49,638 2019 – 44,197 53,647 2020 – 42,726 Total $ 146,011 Outstanding liabilities prior to 2018, net of reinsurance 77 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 14,561 (1) The majority of physical damage claims settle within a two-year period. The triangles above have been abbreviated to reflect the short-tail nature of this business. The reconciliation of the net incurred and paid claims development tables to the liability for claims and claim adjustment expenses in the consolidated balance sheet at December 31, 2020 and 2019 is as follows. 2020 2019 Net outstanding liabilities Commercial Liability $ 420,698 $ 355,148 Workers' Compensation 168,859 154,409 Occupational Accident 15,039 19,840 Physical Damage 14,561 11,676 Professional Liability Assumed 11,958 16,079 Other short-duration insurance lines 10,016 10,478 Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 641,131 567,630 Reinsurance recoverable on unpaid claims Commercial Liability 209,126 209,152 Workers' Compensation 211,421 182,908 Occupational Accident 500 1,979 Physical Damage 1,054 655 Other short-duration insurance lines 2,267 3,611 Reinsurance recoverable on unpaid losses at the end of the year 424,368 398,305 Unallocated claims adjustment expenses 24,170 22,370 Total gross liability for unpaid claims and claims adjustment expense $ 1,089,669 $ 988,305 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 (Supplementary Information and Unaudited) Years 1 2 3 4 5 6 7 8 9 10 Commercial Liability 8.8% 25.2% 22.8% 19.8% 8.9% 5.4% 3.3% 0.8% 1.1% – Workers' Compensation 16.9% 26.5% 16.1% 10.1% 6.2% 3.8% 3.1% 2.0% 1.1% 0.6% Occupational Accident 36.2% 40.7% 11.2% 4.1% 1.0% 1.6% (0.1)% 0.4% 0.6% 0.3% Physical Damage 81.6% 16.3% (0.4)% N/A N/A N/A N/A N/A N/A N/A Professional Liability Assumed 1.4% 3.2% 11.8% 27.6% 16.9% 14.9% 9.0% 4.1% 2.6% 1.7% Reserve methodologies for incurred but not reported losses The Company uses both standard actuarial techniques common to most insurance companies as well as proprietary techniques developed by the Company in connection with its specialty business products. For its short-tail lines of The Company also uses the loss development factor approach for its long-tail lines of business, including workers' compensation. A minimum of 15 accident years is included in the loss development triangles used to calculate link ratios and the selected loss development factors used to determine the reserves for incurred but not reported losses. Significant emphasis is placed on the use of tail factors for the Company's long-tail lines of business. For the Company's commercial automobile risks, which are covered by regularly updated reinsurance agreements and which contain wide-ranging self-insured retentions ("SIR"), traditional actuarial methods are supplemented by other methods, as described below, in consideration of the Company's exposures to loss. In situations where the Company's reinsurance structure, the insured's SIR selections, policy volume, and other factors are changing, current accident period loss exposures may not be homogenous enough with historical loss data to allow for reliable projection of future developed losses. Therefore, the Company supplements the above-described actuarial methods with loss ratio reserving techniques developed from the Company's proprietary databases to arrive at the reserve for incurred but not reported losses for the calendar/accident period under review. As losses for a given calendar/accident period develop with the passage of time, management evaluates such development on a monthly and quarterly basis and adjusts reserve factors, as necessary, to reflect current judgment with regard to the anticipated ultimate incurred losses. This process continues until all losses are settled for each period subject to this method. The Company notes there is more inherent uncertainty in 2020 than normal due to COVID-19, which could lead to either favorable or unfavorable impacts to its loss development that are currently unknown. Claim count methodology The Company uses a claim event and coverage combination to estimate frequency. For example, a single claim event involving loss for physical damage of a vehicle and personal injury to a claimant would be considered two claims for purposes of the calculation of frequency. A single claim event causing personal injury to two claimants would be considered a single claim under the methodology. Due to the number of reinsurance assumed treaties entered into (and the varying structures: both quota share and excess of loss) the Company deems it impractical to collect claim frequency information related to this business and this information has not been made available to the Company.

Reinsurance

Reinsurance	12 Months Ended
	Dec. 31, 2020
Reinsurance [Abstract]
Reinsurance	Note D – Reinsurance The Insurance Subsidiaries cede portions of their gross premiums written to certain other insurers under excess of loss and quota share treaties and by facultative placements. Some reinsurance contracts provide that a loss be shared among the Company and its reinsurers on a predetermined pro-rata basis ("quota share"), while other contracts provide that the Company keep a fixed amount of the loss, similar to a deductible, with reinsurers taking all losses above this fixed amount ("excess of loss"). Reinsurance treaties with other companies permit the recovery of a portion of related direct losses. Management determines the amount of net exposure it is willing to accept generally on a product-line basis. Certain treaties covering commercial automobile risks include annual deductibles which must be exceeded before the Company can recover under the terms of the treaty. The Company retains a higher percentage of the direct premium in consideration of these deductible provisions. The Company remains liable to the extent the reinsuring companies are unable to meet their obligations under reinsurance contracts. The Company also serves as an assuming reinsurer on treaties with direct writing insurance companies and, prior to June 30, 2015, under retrocessions from other reinsurers for catastrophic property coverages. Accordingly, for periods prior to that date, the occurrence of catastrophic events could have had a significant impact on the Company's operations. In addition, the Insurance Subsidiaries participate in certain mandatory residual market pools, which require insurance companies to provide coverages on assigned risks. The assigned risk pools allocate participation to all insurers based upon each insurer's portion of premium writings on a state or national level. Historically, the operation of these assigned risk pools has resulted in net losses being allocated to the Company, although such losses have not been material in relation to the Company's operations. The following table summarizes the impact of reinsurance ceded and assumed on the Company's net premiums written and earned for the most recent three years: Premiums Written Premiums Earned 2020 2019 2018 2020 2019 2018 Direct $ 546,708 $ 574,181 $ 581,070 $ 557,795 $ 570,959 $ 562,364 Ceded on direct (106,561 ) (122,676 ) (138,102 ) (113,125 ) (124,446 ) (131,080 ) Net direct 440,147 451,505 442,968 444,670 446,513 431,284 Assumed 853 737 1,430 845 775 1,596 Ceded on assumed – – – – – – Net assumed 853 737 1,430 845 775 1,596 Net $ 441,000 $ 452,242 $ 444,398 $ 445,515 $ 447,288 $ 432,880 Net losses and loss expenses incurred for 2020, 2019 and 2018 have been reduced by ceded reinsurance recoveries of approximately $105,895, $121,927 and $148,173, respectively. Ceded reinsurance premiums and loss recoveries for the purchase of catastrophe reinsurance coverage on the Company's net direct business were not material. Net losses and loss expenses incurred include expenses of $432 for 2020, expenses of $193 for 2019 and a savings of $1,300 for 2018, relating to reinsurance assumed from non-affiliated insurance or reinsurance companies. Components of reinsurance recoverable at December 31, 2020 and 2019 are as follows: 2020 2019 Case unpaid losses, net of allowance for reinsurance $ 166,171 $ 166,675 Incurred but not reported unpaid losses and loss expenses 257,225 230,459 Paid losses and loss expenses 24,133 20,334 Unearned premiums 8,035 14,599 $ 455,564 $ 432,067

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
Income Taxes [Abstract]
Income Taxes	Note E - Income Taxes On December 22, 2017, the U.S. Tax Cuts and Jobs Act (the "U.S. Tax Act") was signed into law, which lowered the U.S. corporate income tax rate from 35% to 21% effective January 1, 2018. The Company finalized its accounting for the tax effects of the U.S. Tax Act during 2018. No material adjustments to income tax expense (benefit) were recorded during 2018. Deferred income taxes are calculated to account for the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets and liabilities as of December 31, 2020 and 2019 are as follows: 2020 2019 Deferred tax liabilities: Unrealized gain on fixed income and equity security investments $ 8,159 $ 5,327 Deferred acquisition costs 2,538 2,821 Loss and loss expense reserves 2,222 2,701 Limited partnership investments – 2,587 Accelerated depreciation 669 687 Other 1,495 1,361 Total deferred tax liabilities 15,083 15,484 Deferred tax assets: Loss and loss expense reserves 12,923 11,460 Limited partnership investments 822 – Unearned premiums discount 2,339 2,529 Impairment related investment declines 435 39 Deferred compensation 1,999 1,181 Deferred ceding commission 492 1,037 Allowance for credit losses 3,580 – Other 1,473 1,273 Total deferred tax assets 24,063 17,519 Net deferred tax assets $ 8,980 $ 2,035 A summary of the difference between federal income tax expense (benefit) computed at the statutory rate and that reported in the consolidated financial statements as of December 31, 2020, 2019 and 2018 is as follows: 2020 2019 2018 Statutory federal income rate applied to pre-tax income (loss) $ 1,336 $ 1,821 $ (9,213 ) Tax effect of (deduction): Tax-exempt investment income (239 ) (402 ) (253 ) Valuation allowance 1,264 – – Other (461 ) (93 ) (331 ) Federal income tax expense (benefit) $ 1,900 $ 1,326 $ (9,797 ) Federal income tax expense (benefit) as of December 31, 2020, 2019 and 2018 consists of the following: 2020 2019 2018 Tax expense (benefit) on pre-tax income (loss): Current $ 7,144 $ 1,377 $ 8,997 Deferred (5,244 ) (51 ) (18,794 ) $ 1,900 $ 1,326 $ (9,797 ) The provision for deferred federal income taxes as of December 31, 2020, 2019 and 2018 consists of the following: 2020 2019 2018 Limited partnerships $ (3,409 ) $ 1,143 $ (2,383 ) Discounts of loss and loss expense reserves (1,944 ) (2,269 ) (2,704 ) Reserves - salvage and subrogation and other 1 (74 ) 427 Unearned premium discount 190 (208 ) (484 ) Deferred compensation (818 ) (600 ) 305 Impairment related investment declines (1,400 ) (411 ) 695 Deferred acquisitions costs and ceding commission 262 405 201 Unrealized gains / losses (59 ) 1,837 (13,876 ) Valuation allowance 1,264 – – Other 669 126 (975 ) Provision for deferred federal income taxes $ (5,244 ) $ (51 ) $ (18,794 ) In assessing the valuation of deferred tax assets, the Company considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income or availability to carryback the losses to taxable income during the periods in which those temporary differences become deductible. The Company considered several factors when analyzing the need for a valuation allowance, including the Company's current three year cumulative GAAP loss through December 31, 2020, the increase in deferred tax assets due to the adoption of CECL at January 1, 2020 discussed in Note A, the change in unrealized gains and losses and the loss of a high taxable income year from the carryback period. The three year cumulative loss limits the Company's ability to use projected income beyond 2020 in the analysis. As of December 31, 2020 and 2019, the Company had no valuation allowance. However, the application of intra-period tax allocation rules to benefits associated with deferred tax assets resulted in a charge to continuing operations as of December 31, 2020 of $1,264 in the consolidated statement of operations, offset by a corresponding benefit in shareholders' equity within accumulated other comprehensive income. In response to the COVID-19 pandemic, the Coronavirus Aid, Relief, and Economic Security Act of 2020, as amended (the “CARES Act”), was signed into law on March 27, 2020, to provide national emergency economic relief measures. The CARES Act, among other things, permits net operating loss (“NOL”) carryovers and carrybacks to offset 100% 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 evaluated the impact of the CARES Act, noting it does not have a material impact. The Company has no uncertain tax positions as of December 31, 2020 or 2019. The Company recognizes accrued interest and penalties, if any, related to unrecognized tax benefits in income tax expense (benefit) and changes in such accruals would impact the Company's effective tax rate. There were no amounts accrued for the payment of interest at December 31, 2020, 2019 and 2018. As of December 31, 2020, calendar years 2019, 2018 and 2017 remain subject to examination by the Internal Revenue Service.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2020
Shareholders' Equity [Abstract]
Shareholders' Equity	Note F - Shareholders' Equity The Company's Class A and Class B Common Stock has a stated value of approximately $0.04 per share. The Company paid a total of $5,692, or $0.40 per share, in dividends during 2020, $5,857, or $0.40 per share, during 2019 and $16,835, or $1.12 per share, during 2018. On August 31, 2017, the Company's Board of Directors authorized the reinstatement of its share repurchase program for up to 2,464,209 shares of the Company's Class A or Class B Common Stock. No duration has been placed on the Company's share repurchase program, and the Company reserves the right to amend, suspend or discontinue it at any time. The share repurchase program does not commit the Company to repurchase any shares of its common stock. During the year ended December 31, 2020, the Company paid $1,782 to repurchase 126,764 shares of Class B Common Stock at an average share price of $14.07 under the share repurchase program. No share repurchases have been made by the Company since March 20, 2020. Accumulated Other Comprehensive Income (Loss) A reconciliation of the components of accumulated other comprehensive income (loss) at December 31, 2020 and 2019 is as follows: 2020 2019 Investments: Total unrealized gain before federal income tax expense (benefit) $ 26,259 $ 12,491 Deferred tax benefit (liability) (1) (4,255 ) (2,628 ) Net unrealized gains on investments 22,004 9,863 Foreign exchange adjustment: Total unrealized losses (310 ) (625 ) Deferred tax benefit 65 131 Net unrealized losses on foreign exchange adjustment (245 ) (494 ) Accumulated other comprehensive income $ 21,759 $ 9,369 (1) Includes the $1,264 valuation allowance benefit recorded in other comprehensive income. See Note E - Income Taxes for additional information. Details of changes in net unrealized gains (losses) on investments for the years ended December 31, 2020, 2019 and 2018 are as follows: 2020 2019 2018 Investments: Pre-tax holding gains (losses) on fixed income securities arising during period $ 10,501 $ 19,182 $ (12,253 ) Less: applicable federal income tax expense (benefit) (1) 941 4,028 (2,573 ) 9,560 15,154 (9,680 ) Pre-tax gains (losses) on fixed income securities included in net income (loss) during period (1) (3,267 ) (1,161 ) (3,560 ) Less: applicable federal income tax expense (benefit) (686 ) (244 ) (748 ) (2,581 ) (917 ) (2,812 ) Change in unrealized gains (losses) on investments $ 12,141 $ 16,071 $ (6,868 ) (1) Includes the $1,264 valuation allowance benefit recorded in other comprehensive income. See Note E - Income Taxes for additional information.

Other Operating Expenses

Other Operating Expenses	12 Months Ended
	Dec. 31, 2020
Other Operating Expenses [Abstract]
Other Operating Expenses	Note G - Other Operating Expenses Details of other operating expenses for the years ended December 31: 2020 2019 2018 Amortization of gross deferred policy acquisition costs $ 79,947 $ 81,734 $ 78,105 Other underwriting expenses 66,005 59,975 46,638 Reinsurance ceded credits (24,764 ) (25,932 ) (23,124 ) Total underwriting expenses 121,188 115,777 101,619 Operating expenses of non-insurance companies 22,240 22,679 32,406 Goodwill impairment charge – – 3,152 Total other operating expenses $ 143,428 $ 138,456 $ 137,177

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2020
Employee Benefit Plans [Abstract]
Employee Benefit Plans	Note H - Employee Benefit Plans The Company maintains a defined contribution 401(k) Employee Savings and Profit Sharing Plan (the "Plan") which covers nearly all employees. The Company's contributions are based on a set percentage and the contributions to the Plan for 2020, 2019 and 2018 were $3,274, $3,213 and $3,486, respectively.

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2020
Stock Based Compensation [Abstract]
Stock Based Compensation	Note I - Stock Based Compensation The Company issues shares of restricted Class B Common Stock to the Company's outside directors as part of their annual retainer compensation. The shares are distributed to the outside directors on the vesting date, which, with the exception of pro-rated annual retainers granted to outside directors, is one year following the date of grant. On May 17, 2019, the Company granted shares of restricted Class B Common Stock in connection with the election of a new outside director, reflecting such director’s pro-rated annual retainer compensation, which shares vested and were distributed on May 7, 2020. Additionally, effective May 22, 2019, John D. Nichols, Jr. ceased serving as the Company's Interim Chief Executive Officer and principal executive officer, but continued to serve as Chairman of the Company's Board of Directors. On May 22, 2019, the Company granted shares of restricted Class B Common Stock to Mr. Nichols in connection with this transition, reflecting his pro-rated annual retainer compensation, which shares also vested and were distributed on May 7, 2020. The table below provides details of the restricted stock issuances to directors for 2020, 2019 and 2018: Grant Date Number of Shares Issued Vesting Date Service Period Grant Date Fair Value Per Share 2/9/2018 408 5/9/2018 2/9/2018 - 6/30/2018 $ 24.20 5/8/2018 19,085 5/8/2019 7/1/2018 - 6/30/2019 $ 23.05 5/7/2019 29,536 5/7/2020 7/1/2019 - 6/30/2020 $ 16.25 5/17/2019 3,591 5/7/2020 5/17/2019 - 6/30/2020 $ 16.25 5/22/2019 3,541 5/7/2020 5/22/2019 - 6/30/2020 $ 16.25 5/5/2020 42,220 5/5/2021 7/1/2020 - 6/30/2021 $ 14.21 Compensation expense related to the above stock grants is recognized over the period in which the directors render the services. Director compensation expense associated with these restricted stock grants of $598, $518 and $464 was charged against income for the restricted stock awards granted in 2020, 2019 and 2018, respectively. In March 2018, the Company's Compensation Committee, now known as the Compensation and Human Capital Committee (the "Committee"), granted equity-based awards pursuant to the Company's Long-Term Incentive Plan (the "Long-Term Incentive Plan"). Certain participants under the Long-Term Incentive Plan were granted equity awards (the "2018 LTIP Awards"), with the number of shares of Class B Common Stock earned pursuant to such awards determined by applying a performance matrix consisting of a measurement of the combined results of the Company's 2018 growth in gross premiums earned and the Company's 2018 combined ratio. The combined ratio is calculated as a ratio of (A) losses and loss expenses incurred, plus other operating expenses, less commission and other income to (B) net premiums earned. LTIP Awards were earned based on the Company's performance in , and therefore shares were issued pursuant to the LTIP Awards. I On November 13, 2018, the Company entered into an employment agreement with its Interim Chief Executive Officer, John D. Nichols, Jr. Pursuant to the terms of this employment agreement, on November 13, 2018, Mr. Nichols was granted 85,000 restricted shares of the Company's Class B Common Stock (the "Nichols Stock Grant"), of which 42,500 shares vested as of October 17, 2019, 21,250 shares vested as of October 17, 2020, and 21,250 shares will vest as of October 17, 2021. The Company incurred $193 of expense during the year ended December 31, 2020 related to the Nichols Stock Grant. In , the Committee granted equity-based awards pursuant to the Long-Term Incentive Plan. Certain participants under the Long-Term Incentive Plan were granted equity awards (the " LTIP Awards"), with the number of shares of Class B Common Stock earned pursuant to such awards determined by applying a performance matrix consisting of a corporate performance component as well as a personal performance component. The corporate performance component of the LTIP Awards was determined based on the Company's achievement of underwriting income compared to the plan target. The Company's underwriting income was calculated as income (loss) before federal income tax expense (benefit), less net realized and unrealized gains (losses) on investments, less net investment income. The personal performance component of the LTIP Awards was determined based on the achievement of personal goals that aligned with departmental and corporate objectives for . LTIP Awards earned were paid in shares of restricted Class B Common Stock in early . One-third of such shares will vest annually over the period beginning year from the date of issue. The Company incurred $ of expense during the year ended , related to the LTIP Awards. On May 22, 2019, the Company entered into an employment agreement with its new Chief Executive Officer, Jeremy D. Edgecliffe-Johnson. Pursuant to the terms of this employment agreement, on May 22, 2019, Mr. Edgecliffe-Johnson was granted 70,000 restricted shares of the Company's Class B Common Stock (the "Edgecliffe-Johnson Stock Grant"), of which 35,000 shares will vest as of June 1, 2022, 21,000 shares will vest as of June 1, 2023, and 14,000 shares will vest as of June 1, 2024. The Company incurred $240 of expense during the year ended December 31, 2020 related to the Edgecliffe-Johnson Stock Grant. On November 5, 2019, the Board of the Company, upon the recommendation of the Committee, approved equity compensation awards to be granted to seven members of senior management as of November 12, 2019 under the Long-Term Incentive Plan. The Board approved a total of $1,100 in grants of restricted shares of the Company’s Class B Common Stock, which will vest on January 1, 2023, subject to the recipient’s continued employment with the Company through the vesting date. The Company incurred $352 of expense during the year ended December 31, 2020 related to this grant. On July 6, 2020, the Committee granted a total of 101,400 restricted shares of the Company's Class B Common Stock to certain members of senior management under the Long-Term Incentive Plan. These 101,400 restricted shares will vest on July 1, 2023, subject to the recipient’s continued employment with the Company through the vesting date. The Company incurred $221 of expense during the year ended December 31, 2020 related to this grant.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2020
Segment Information [Abstract]
Segment Information	Note J – Segment Information The Company has one reportable business segment in its operations: Property and Casualty Insurance. The property and casualty insurance segment provides multiple lines of insurance coverage primarily to commercial automobile companies, as well as to independent contractors who contract with commercial automobile companies. The following table summarizes segment revenues for the years ended December 31: 2020 2019 2018 Revenues: Net premiums earned $ 445,515 $ 447,288 $ 432,880 Net investment income 25,422 26,249 22,048 Net realized and unrealized gains (losses) on investments (9,236 ) 12,889 (25,691 ) Commissions and other income 7,048 9,171 9,932 Total revenues $ 468,749 $ 495,597 $ 439,169

Earnings (Loss) Per Share

Earnings (Loss) Per Share	12 Months Ended
	Dec. 31, 2020
Earnings (Loss) Per Share [Abstract]
Earnings (Loss) Per Share	Note K - Earnings (Loss) Per Share The following is a reconciliation of the denominators used in the calculation of basic and diluted earnings (loss) per share for the years ended December 31: 2020 2019 2018 Average shares outstanding for basic earnings (loss) per share 14,140,178 14,520,815 14,964,812 Dilutive effect of share equivalents 129,806 99,118 – Average shares outstanding for diluted earnings (loss) per share 14,269,984 14,619,933 14,964,812

Concentrations of Credit Risk

Concentrations of Credit Risk	12 Months Ended
	Dec. 31, 2020
Concentrations of Credit Risk [Abstract]
Concentrations of Credit Risk	Note L - Concentrations of Credit Risk The Company writes policies of excess insurance attaching above SIRs and also writes policies that contain per-claim deductibles. Those losses and claims that fall within the SIR limits are obligations of the insured; however, the Company writes surety bonds in favor of various regulatory agencies guaranteeing the insureds' payment of claims within the SIR. Further, specified portions of losses and claims incurred under large deductible policies, while obligations of the Company, are contractually reimbursable to the Company from the insureds. The Company requires collateral from its insureds to serve as a source of reimbursement if the Company is obligated to pay claims within the SIR by reason of an insured's default or if the insured fails to reimburse the Company for deductible amounts paid by the Company. Acceptable collateral may be provided in the form of letters of credit on Company-approved banks, Company-approved marketable securities or cash. The amount of collateral required of an insured is determined by the financial condition of the insured, the type of obligations guaranteed by the Company, estimated reserves for incurred losses within the SIR or deductible that have been reported to the insured or the Company, estimated incurred but not reported losses, and estimated losses that are expected to occur within the SIR or be deductible prior to the next collateral adjustment date. In general, the Company attempts to hold collateral equal to 100% of the ultimate losses that would be paid by or due the Company in the event of an insured's default. Periodic audits are conducted by the Company to evaluate its exposure and the collateral required. If a deficiency in collateral is noted as the result of an audit, additional collateral is requested immediately. Because collateral amounts contain numerous estimates of the Company's exposure, are adjusted only periodically and are sometimes reduced based on the superior financial condition of the insured, the amount of collateral held by the Company at a given point in time may not be sufficient to fully reimburse the Company for all amounts due in the event of an insured's default. In that regard, the Company is not fully collateralized for the potential maximum exposure relating to FedEx Corporation and certain of its subsidiaries and related entities ("FedEx"). However, the Company believes that an event of default in excess of the collateralized amounts is remote. The Company's balance sheet includes paid and estimated unpaid amounts recoverable from reinsurers under various agreements. These recoverables are only partially collateralized. The two largest amounts due from individual reinsurers, net of collateral and offsets, were $55,097 and $46,488 at December 31, 2020.

Acquisition and Related Goodwil

Acquisition and Related Goodwill and Intangibles	12 Months Ended
	Dec. 31, 2020
Acquisition and Related Goodwill and Intangibles [Abstract]
Acquisition and Related Goodwill and Intangibles	Note M – Acquisition and Related Goodwill and Intangibles On October 31, 2008, the Company purchased a commercial lines specialty insurance agency for a cash purchase price of $3,500. As part of the purchase, the Company recorded goodwill of $3,152 and intangible assets of $179. Accumulated amortization of intangible assets was $179 as of both December 31, 2020 and 2019. During the fourth quarter of 2018, the Company conducted its annual impairment review. Based on the results of that review, the Company concluded that its entire goodwill balance was impaired, resulting in an impairment loss of $3,152. The Company utilized a market approach, which considered revenue and earnings multiples of its own and comparable company information. In the analysis, the Company considered the significant decline in its stock price and the decline in overall financial performance during 2018, particularly in more recent periods, as well as the downgrade to its A.M. Best Company, Inc. rating in late 2018.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2020
Fair Value [Abstract]
Fair Value	Note N – Fair Value Assets and liabilities recorded at fair value in the consolidated balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. The following tables summarize fair value measurements by level for assets measured at fair value on a recurring basis: As of December 31, 2020: Description Total Level 1 Level 2 Level 3 Fixed income securities: Agency collateralized mortgage obligations $ 11,931 $ – $ 11,931 $ – Agency mortgage-backed securities 102,107 – 102,107 – Asset-backed securities 107,696 – 107,696 – Bank loans 11,361 – 11,361 – Collateralized mortgage obligations 5,118 – 5,118 – Corporate securities 352,837 – 352,837 – Options embedded in convertible securities 7,404 – 7,404 – Mortgage-backed securities 38,056 – 38,056 – Municipal obligations 45,143 – 45,143 – Non-U.S. government obligations 30,600 – 30,600 – U.S. government obligations 207,439 – 207,439 – Total fixed income securities 919,692 – 919,692 – Equity securities: Consumer 11,598 11,598 – – Energy 1,227 1,227 – – Financial 29,064 29,064 – – Industrial 5,180 5,180 – – Technology 2,851 2,851 – – Other 8,249 8,249 – – Total equity securities 58,169 58,169 – – Short-term investments 1,000 1,000 – – Cash equivalents 47,026 – 47,026 – Total $ 1,025,887 $ 59,169 $ 966,718 $ – As of December 31, 2019: Description Total Level 1 Level 2 Level 3 Fixed income securities: Agency collateralized mortgage obligations $ 12,093 $ – $ 12,093 $ – Agency mortgage-backed securities 56,280 – 56,280 – Asset-backed securities 106,397 – 106,397 – Bank loans 14,568 – 14,568 – Certificates of deposit 2,835 2,835 – – Collateralized mortgage obligations 5,616 – 5,616 – Corporate securities 276,087 – 276,087 – Options embedded in convertible securities 5,294 – 5,294 – Mortgage-backed securities 47,463 – 47,463 – Municipal obligations 36,286 – 36,286 – Non-U.S. government obligations 24,179 – 24,179 – U.S. government obligations 208,440 – 208,440 – Total fixed income securities 795,538 2,835 792,703 – Equity securities: Consumer 16,707 16,707 – – Energy 3,074 3,074 – – Financial 31,577 31,577 – – Industrial 4,927 4,927 – – Technology 2,817 2,817 – – Funds (e.g., mutual funds, closed end funds, ETFs) 9,460 9,460 – – Other 8,250 8,250 – – Total equity securities 76,812 76,812 – – Short-term investments 1,000 1,000 – – Cash equivalents 59,780 – 59,780 – Total $ 933,130 $ 80,647 $ 852,483 $ – Level inputs, as defined by the FASB guidance, are as follows: Level Input: Input Definition: Level 1 Inputs are unadjusted, quoted prices for identical assets or liabilities in active markets at the measurement date. Level 2 Inputs other than quoted prices included in Level 1 that are observable for the asset or liability through corroboration with market data at the measurement date. Level 3 Unobservable inputs that reflect management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. The Company did not have any Level 3 assets at December 31, 2020 or 2019. Level 3 assets, when present, are valued using various unobservable inputs including extrapolated data, proprietary models and indicative quotes. Quoted market prices are obtained whenever possible. Where quoted market prices are not available, fair values are estimated using broker/dealer quotes for specific securities. These techniques are significantly affected by the Company's assumptions, including discount rates and estimates of future cash flows. Potential taxes and other transaction costs have not been considered in estimating fair values. Transfers between levels, if any, are recorded as of the beginning of the reporting period. There were no significant transfers of assets between Level 1 and Level 2 during 2020 or 2019. In addition to the preceding disclosures on assets recorded at fair value in the consolidated balance sheets, FASB guidance also requires the disclosure of fair values for certain other financial instruments for which it is practicable to estimate fair value, whether or not such values are recognized in the consolidated balance sheets. Non-financial instruments such as real estate, property and equipment, other assets, deferred income taxes and intangible assets, and certain financial instruments such as policy reserve liabilities are excluded from the fair value disclosures. Therefore, the fair value amounts cannot be aggregated to determine the underlying economic value of the Company. The following methods, assumptions and inputs were used to estimate the fair value of each class of financial instrument: Limited partnerships: The Company accounts for investments in limited partnerships using the equity method of accounting, which requires an investor in a limited partnership to carry the investment at its proportionate share of the limited partnership's equity. The underlying assets of the Company's investments in limited partnerships are carried primarily at fair value; therefore, the Company's carrying value of limited partnerships approximates fair value. As these investments are not actively traded and the corresponding inputs are based on data provided by the investees, they are classified as Level 3. Commercial mortgage loans: Commercial mortgage loans are carried primarily at amortized cost along with a valuation allowance for losses when necessary. These investments represent interests in commercial mortgage loans originated and serviced by a third party of which the Company shares, on a pro-rata basis, in all related cash flows of the underlying mortgage loans. The fair value of the Company’s investment in these commercial mortgage loans is based on expected future cash flows discounted at the current interest rate for origination of similar quality loans, adjusted for specific loan risk. These investments are classified as Level 3. Short-term borrowings: The fair value of the Company's short-term borrowings is based on quoted market prices for the same or similar debt, or, if no quoted market prices are available, on the current market interest rates available to the Company for debt of similar terms and remaining maturities. A summary of the carrying value and fair value by level of financial instruments not recorded at fair value on the Company's consolidated balance sheets at December 31, 2020 and 2019 is as follows: Carrying Fair Value 2020 : Value Level 1 Level 2 Level 3 Total Assets: Limited partnerships $ 7,214 $ – $ – $ 7,214 $ 7,214 Commercial mortgage loans 10,602 – – 11,425 11,425 Liabilities: Short-term borrowings 20,000 – 20,000 – 20,000 2019: Assets: Limited partnerships $ 23,292 $ – $ – $ 23,292 $ 23,292 Commercial mortgage loans 11,782 – – 12,068 12,068 Liabilities: Short-term borrowings 20,000 – 20,000 – 20,000

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2020
Quarterly Results of Operations (Unaudited) [Abstract]
Quarterly Results of Operations (Unaudited)	Note O - Quarterly Results of Operations (Unaudited) Quarterly results of operations are as follows: 2020 2019 1st 2nd 3rd 4th 1st 2nd 3rd 4th Net premiums earned $ 109,659 $ 97,730 $ 117,853 $ 120,273 $ 110,012 $ 115,631 $ 110,288 $ 111,357 Net investment income 7,236 6,379 5,486 6,321 6,231 6,500 6,703 6,815 Net realized and unrealized gains (losses) on investments (27,756 ) 10,615 144 7,761 6,027 2,889 125 3,848 Losses and loss expenses incurred 81,831 68,208 84,673 84,246 87,122 90,433 84,781 86,132 Net income (loss) (22,156 ) 11,367 3,281 11,971 2,748 1,535 (707 ) 3,771 Net income (loss) per diluted share $ (1.56 ) $ 0.80 $ 0.23 $ 0.84 $ 0.18 $ 0.11 $ (0.05 ) $ 0.26

Statutory

Statutory	12 Months Ended
	Dec. 31, 2020
Statutory [Abstract]
Statutory	Note P - Statutory Net income of the Insurance Subsidiaries, all of which are wholly-owned, as determined in accordance with statutory accounting practices, was $3,881, $25,302 and $36,236 for 2020, 2019 and 2018, respectively. Consolidated statutory capital and surplus for these Insurance Subsidiaries was $347,489 and $371,793 at December 31, 2020 and 2019, respectively, of which $50,584 may be transferred by dividend or loan to Protective during calendar year 2021 with proper notification to, but without approval from, regulatory authorities. State regulatory authorities prescribe calculations of the minimum amount of statutory capital and surplus necessary for each insurance company to remain authorized. These computations are referred to as risk-based capital requirements and are based on a number of complex factors taking into consideration the quality and nature of assets, the historical adequacy of recorded liabilities and the specific nature of business conducted. At December 31, 2020, the minimum statutory capital and surplus requirements of the Insurance Subsidiaries was $136,544. Actual consolidated statutory capital and surplus at December 31, 2020 exceeded this requirement by $210,946.

Leases

Leases	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Leases	Note Q - Leases The Company leases certain computer and related equipment using noncancelable operating leases. Lease expense for 2020, 2019 and 2018 was $135, $302 and $204, respectively. At December 31, 2020, future lease payments for operating leases with initial or remaining noncancelable terms of one year or more consisted of the following: 2021 $ 103 2022 18 2023 – 2024 and thereafter – Total minimum payments required $ 121 The Company recorded a right-of-use asset and lease liability on the consolidated balance sheet at December 31, 2020 of $120, which are included within other assets accounts pyable and other liabilities

Debt

Debt	12 Months Ended
	Dec. 31, 2020
Debt [Abstract]
Debt	Note R – Debt On August 9, 2018, the Company entered into a credit agreement providing a revolving credit facility with a $40,000 limit, with the option for up to an additional $35,000 in incremental loans at the discretion of the lenders. This credit agreement has an expiration date of August 9, 2022. Interest on this revolving credit facility is referenced to the London Interbank Offered Rate and can be fixed for periods of up to one year at the Company's option. Outstanding drawings on this revolving credit facility were $20,000 as of December 31, 2020. At December 31, 2020, the effective interest rate was 1.25%, and the Company had $20,000 remaining under the revolving credit facility. The current outstanding borrowings were used to repay the Company's previous line of credit. The Company's revolving credit facility has two financial covenants, each of which were met as of December 31, 2020. These covenants require the Company to have a minimum U.S. generally accepted accounting principles net worth and a maximum consolidated debt to equity ratio of 0.35.

Related Parties

Related Parties	12 Months Ended
	Dec. 31, 2020
Related Parties [Abstract]
Related Parties	Note S - Related Parties The Company utilizes the services of an investment firm of which one director of the Company is a partial owner. This investment firm manages equity securities and fixed income portfolios held by the Company with an aggregate market value of approximately $7,796 at December 31, 2020. Total commissions and net fees earned by this investment firm and its affiliates on these portfolios were $110, $145 and $103 for the years ended December 31, 2020, 2019 and 2018.

Litigation, Commitments and Con

Litigation, Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
Litigation, Commitments and Contingencies [Abstract]
Litigation, Commitments and Contingencies	Note T - Litigation, Commitments and Contingencies In the ordinary, regular and routine course of their business, the Company and its Insurance Subsidiaries are frequently involved in various matters of litigation relating principally to claims for insurance coverage provided. No currently pending matter is deemed by management to be material to the Company, other than as noted below. Personnel Staffing Group Litigation In July 2019, Protective Insurance Company (“Protective”) was named as a defendant in an action brought by a former insured, Personnel Staffing Group d/b/a MVP Staffing (“PSG”), in the U.S. District Court for the Central District of California (the “California Action”) alleging that Protective had breached its workers’ compensation insurance policy and had breached the duties of good faith and fair dealing. Protective provided workers’ compensation insurance to PSG from January 1, 2017 through June 30, 2018, which was subject to a $500 per claim deductible to be paid by PSG. No specific damages were included in the complaint. In August 2019, Protective filed a motion to dismiss or stay the action. On April 28, 2020, Protective's motion to dismiss the California Action was granted without prejudice on grounds that Indiana is the more appropriate forum. On May 4, 2020, PSG filed a notice of appeal in the 9 th In August 2019, Protective filed a lawsuit against PSG in Marion County Superior Court, in Indianapolis, Indiana (the “Indiana Court”) alleging breach of contract, breach of the parties' collateral agreement, breach of the parties' indemnity agreement, and seeking a declaratory judgment regarding PSG’s obligation to fund its ongoing claim deductible obligations and adequately collateralize Protective’s current and ongoing claims exposure pursuant to terms of the parties' agreements (the “Indiana Action”). In October 2019, Protective amended the complaint to include allegations of misrepresentation as to source of coverage, negligent misrepresentation, fraud and racketeering and seeking injunctive relief. In November 2019, PSG filed a motion to dismiss the Indiana Action on the basis of comity with the California Action, claiming that California was the proper forum for Protective’s claims. In February 2020, the Indiana Court issued an order dismissing the Indiana Action without prejudice; the Indiana Court declined to rule on the legal effect of the forum selection clause in the parties’ agreements, finding that any interpretation should be addressed by the court in the California Action. Following the court's granting of Protective’s motion to dismiss in the California Action, on May 1, 2020, Protective filed a motion with the Indiana Court to re-open the Indiana Action, which was denied on September 23, 2020. On December 22, 2020, Protective moved for reconsideration of its Motion to Re-Open the Indiana Action, which the Indiana Court granted on February 5, 2021. On February 18, 2021, PSG moved for further reconsideration and for hearing, which was held on March 2, 2021. The Indiana court has taken the matter under advisement. Protective intends to vigorously pursue its claims against PSG, however, the ultimate outcome cannot be presently determined. Pursuant to the terms of the workers’ compensation policies, Protective has a duty to adjust and pay claims arising under the policies regardless of whether PSG makes payments to Protective for deductible obligations under the policies. Under its contractual obligations to Protective, PSG is required to maintain a “loss fund” for the payment of claims, the balance of which is to remain at or above $4,000; in addition, PSG is required to provide collateral in an amount equal to 110% of Protective’s current open case reserves on workers’ compensation claims arising under the policies. As of December 31, 2020, Protective had approximately $21,780 in receivables on claims arising under PSG’s workers’ compensation policies and had exhausted all collateral provided by PSG. Protective continues to pay claims settlements under the policies without reimbursement from PSG. For the past six months, the average monthly invoices have been approximately $740. PSG’s estimated ultimate obligation under the agreements is approximately $47,000 as of December 31, 2020 (inclusive of the $21,780 in receivables noted above). At December 31, 2020, based on the Company's assessment that PSG will continue to operate as a business and that the terms of the agreement with PSG will be legally enforceable, the Company believes that it will fully collect all current and future amounts due from PSG relating to this matter. The Company included this matter in its assessment of the impact of adopting ASU 2016-13, the new guidance for measuring CECL, which is discussed in Note A. A probability-of-default methodology was applied to projected estimated cash flows to estimate the allowance for expected credit losses for this matter. The Company considered the delay in reimbursement for claims paid as well as probability of default assumptions when analyzing the credit loss related to this matter. As of January 1, 2020, in conjunction with the adoption of ASU 2016-13, the Company recorded an allowance for expected credit losses of $15,000 ($11,850, net of tax) as a reduction to equity. During the third quarter of 2020, the Company performed an update to its CECL allowance calculation related to the PSG matter. As noted above, there have been further delays in the litigation process, which have extended the estimated cash flow timing. As a result of these delays and an increase in the estimated ultimate obligation, the Company recorded an additional allowance of $1,500 ($1,185, net of tax) within other operating expenses in the condensed consolidated statement of operations in the third quarter of 2020. No additional allowance was recorded in the fourth quarter of 2020. In the event of a situation that results in no recovery from PSG, the Company would incur an estimated charge to the consolidated statement of operations of $30,500 ($24,095, net of tax), which represents the estimated ultimate obligation discussed above less the CECL allowance.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2020
Subsequent Events [Abstract]
Subsequent Events	Note U – Subsequent Events Proposed Merger with The Progressive Corporation Merger Agreement On February 14, 2021, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with The Progressive Corporation, an Ohio corporation (“Progressive”), and Carnation Merger Sub Inc., an Indiana corporation and wholly-owned indirect subsidiary of Progressive (“Merger Sub”). The Merger Agreement provides for, subject to the satisfaction or waiver of specified conditions, the merger of Merger Sub with and into the Company (the “Merger”), whereupon the separate existence of Merger Sub will cease and Protective will continue as the surviving corporation and as a wholly-owned indirect subsidiary of Progressive. The Company's Board of Directors (the "Board"), at the unanimous recommendation of the Special Committee of the Board, unanimously determined that the Merger Agreement and the transactions contemplated thereby, including the Merger, are advisable and fair to, and in the best interests of, the Company and its shareholders, and approved, adopted and declared advisable the Merger Agreement and the transactions contemplated thereby. The Merger is expected to close prior to the end of the third quarter of 2021. At the effective time of the Merger, each issued and outstanding share of common stock, without par value, of the Company (other than each share of the Company’s common stock that is owned by the Company as treasury stock or by any subsidiary of the Company and each share of the Company’s common stock owned by Progressive, Merger Sub or any other subsidiary of Progressive immediately prior to the effective time of the Merger) will be automatically canceled and converted into the right to receive $23.30 in cash, without interest for a total transaction value of approximately $338 million. The Merger Agreement contains various customary representations and warranties from each of the Company, Progressive and Merger Sub. The Company has also agreed to various customary covenants, including but not limited to conducting its business in the ordinary course and not engaging in certain types of transactions during the period between the execution of the Merger Agreement and the closing of the Merger. However, the Merger Agreement permits the Company to continue to pay regular quarterly dividends not to exceed $0.10 per share of the Company’s common stock. The Merger is subject to certain conditions, including approval of the Merger by the Company's Class A shareholders, legal and regulatory approvals including from the Indiana Department of Insurance and the expiration of the applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, as well as other customary closing conditions. Voting and Support Agreement On February 14, 2021, the Company also entered into a Voting and Support Agreement (the “Voting Agreement”) with Progressive and certain of the Company's shareholders. The Voting Agreement requires that the Company shareholders party to the Voting Agreement: (i) appear at the meeting of the holders of the Company's Class A common stock to consider resolutions to approve the Merger Agreement and the Merger or otherwise cause their shares of the Company's common stock to be counted as present for purposes of calculating a quorum, and (ii) vote their shares (a) in favor of the adoption of the Merger Agreement, the Merger and the other transactions contemplated thereby and any action reasonably requested by Progressive or the Board in furtherance of the foregoing, (b) against any action or agreement that would result in a material breach of any covenant, representation or warranty or other obligation or agreement of the Company contained in the Merger Agreement and (c) against any takeover proposal or superior proposal (provided, that if the Board changes its recommendation with respect to the Merger, any shares of Class A common stock owned by such shareholders in excess of approximately 35% of the outstanding shares of Class A common stock will be voted in the same proportion as those shares of Class A common stock voted by the holders of the Company’s Class A common stock that are not party to the Voting Agreement). There can be no assurance that the Merger will occur or, if it does occur, of its terms or timing. For additional information regarding the risks associated with the Merger, please see Part I, Item 1A, " Risk Factors Dividends On February 22, 2021, the Company's Board of Directors declared a regular quarterly dividend of $0.10 per share on the Company's Class A and Class B Common Stock. The dividend per share will be payable March 10, 2021 to shareholders of record on March 5, 2021.

Schedule I - Summary of Investm

Schedule I - Summary of Investments Other Than Investments in Related Parties	12 Months Ended
	Dec. 31, 2020
Schedule I - Summary of Investments Other Than Investments in Related Parties [Abstract]
Schedule I - Summary of Investments Other Than Investments in Related Parties	SCHEDULE I PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES SUMMARY OF INVESTMENTS OTHER THAN INVESTMENTS IN RELATED PARTIES (in thousands) As of December 31, 2020 Type of Investment Cost Fair Value Amount at Which Shown in the Consolidated Balance Sheet (1) Fixed Income Securities: Bonds: Agency collateralized mortgage obligations $ 11,448 $ 11,931 $ 11,931 Agency mortgage-backed securities 99,060 102,107 102,107 Asset-backed securities 108,686 107,696 107,696 Bank loans 11,590 11,361 11,361 Collateralized mortgage obligations 5,061 5,118 5,118 Corporate securities 344,059 360,241 360,241 Mortgage-backed securities 40,675 38,056 38,056 Municipal obligations 43,353 45,143 45,143 Non-U.S. government obligations 29,882 30,600 30,600 U.S. government obligations 200,654 207,439 207,439 Total fixed income securities 894,468 919,692 919,692 Equity Securities: Common Stocks: Consumer 9,619 11,598 11,598 Energy 2,046 1,227 1,227 Financial 24,007 29,064 29,064 Industrial 4,066 5,180 5,180 Technology 1,749 2,851 2,851 Other 6,950 8,249 8,249 Total equity securities 48,437 58,169 58,169 Commercial mortgage loans 10,602 11,425 10,602 Short-term: Certificates of deposit 1,000 1,000 1,000 Total short-term and other 1,000 1,000 1,000 Total investments $ 954,507 $ 990,286 $ 989,463 (1) Amounts presented above do not include investments of $47,026 classified as cash and cash equivalents in the consolidated balance sheet.

Schedule II - Condensed Financi

Schedule II - Condensed Financial Information of Registrant	12 Months Ended
	Dec. 31, 2020
Schedule II - Condensed Financial Information of Registrant [Abstract]
Schedule II - Condensed Financial Information of Registrant	SCHEDULE II PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES CONDENSED FINANCIAL INFORMATION OF REGISTRANT BALANCE SHEETS - PARENT COMPANY ONLY (in thousands) December 31 2020 2019 Assets Investment in subsidiaries $ 389,757 $ 398,725 Due from affiliates 7,877 1,579 Investments other than subsidiaries: Fixed income securities 23,379 23,979 Limited partnerships 206 206 23,585 24,185 Cash and cash equivalents 12,917 7,059 Accounts receivable 7,059 5,606 Other assets 14,316 22,153 Total assets $ 455,511 $ 459,307 Liabilities and shareholders' equity Liabilities: Premiums payable $ 16,866 $ 20,238 Deposits from insureds 44,268 42,067 Short-term borrowings 20,000 20,000 Other liabilities 11,295 12,686 92,429 94,991 Shareholders' equity: Common stock: Class A 111 111 Class B 498 499 Additional paid-in capital 54,571 53,349 Accumulated other comprehensive income 21,759 9,369 Retained earnings 286,143 300,988 363,082 364,316 Total liabilities and shareholders' equity $ 455,511 $ 459,307 SCHEDULE II PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES CONDENSED FINANCIAL INFORMATION OF REGISTRANT STATEMENTS OF OPERATIONS PARENT COMPANY ONLY (in thousands) Year Ended December 31 2020 2019 2018 Revenue: Commissions and service fees $ 15,011 $ 14,149 $ 17,456 Cash dividends from subsidiaries – – 5,000 Net investment income 453 692 569 Net realized losses on investments (10 ) (46 ) (192 ) Other 138 17 51 15,592 14,812 22,884 Expenses: Salary and related items 10,663 11,804 20,158 Other 11,048 10,386 11,724 21,711 22,190 31,882 Loss before federal income tax benefit and equity in undistributed income of subsidiaries (6,119 ) (7,378 ) (8,998 ) Federal income tax benefit (1,333 ) (1,452 ) (2,862 ) (4,786 ) (5,926 ) (6,136 ) Equity in undistributed income of subsidiaries 9,249 13,273 (27,939 ) Net income (loss) $ 4,463 $ 7,347 $ (34,075 ) SCHEDULE II PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES CONDENSED FINANCIAL INFORMATION OF REGISTRANT STATEMENTS OF COMPREHENSIVE INCOME (LOSS) PARENT COMPANY ONLY (in thousands) Year Ended December 31 2020 2019 2018 Net income (loss) $ 4,463 $ 7,347 $ (34,075 ) Other comprehensive income (loss), net of tax: Unrealized net gains (losses) on fixed income securities 12,141 16,071 (6,868 ) Foreign currency translation adjustments 249 645 (830 ) Other comprehensive income (loss) 12,390 16,716 (7,698 ) Comprehensive income (loss) $ 16,853 $ 24,063 $ (41,773 ) SCHEDULE II PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES CONDENSED FINANCIAL INFORMATION OF REGISTRANT STATEMENTS OF CASH FLOWS - PARENT COMPANY ONLY (in thousands) Year Ended December 31 2020 2019 2018 Net cash provided by operating activities $ 12,350 $ 10,643 $ 14,019 Investing activities: Purchases of investments (7,795 ) (4,967 ) (11,435 ) Sales or maturities of investments 8,777 3,935 11,213 Distributions from limited partnerships – 1 – Net purchases of property and equipment – (380 ) (3,677 ) Net cash provided by (used in) investing activities 982 (1,411 ) (3,899 ) Financing activities: Dividends paid to shareholders (5,692 ) (5,857 ) (16,835 ) Repurchase of common shares (1,782 ) (11,501 ) (4,596 ) Net cash used in financing activities (7,474 ) (17,358 ) (21,431 ) Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents 5,858 (8,126 ) (11,311 ) Cash, cash equivalents and restricted cash and cash equivalents at beginning of year 7,059 15,185 26,496 Cash, cash equivalents and restricted cash and cash equivalents at end of year $ 12,917 $ 7,059 $ 15,185 Note to Condensed Financial Statements -- Basis of Presentation The Company's investment in subsidiaries is stated at cost plus equity in the undistributed earnings of subsidiaries since the date of acquisition. The Company's share of net income of its subsidiaries is included in income using the equity method. These financial statements should be read in conjunction with the Company's consolidated financial statements.

Schedule III - Supplementary In

Schedule III - Supplementary Insurance Information	12 Months Ended
	Dec. 31, 2020
Schedule III - Supplementary Insurance Information [Abstract]
Schedule III - Supplementary Insurance Information	SCHEDULE III PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES SUPPLEMENTARY INSURANCE INFORMATION (in thousands) As of December 31 Year Ended December 31 Segment Deferred Policy Acquisition Costs Reserves for Unpaid Claims and Claim Adjustment Expenses Unearned Premiums Other Policy Claims and Benefits Payable Net Premium Earned Net Investment Income Benefits, Claims, Losses and Settlement Expenses Amortization of Deferred Policy Acquisition Costs Other Operating Expenses Net Premiums Written (A) (A) (A) (B) Property/Casualty Insurance 2020 $ 9,744 $ 1,089,669 $ 63,731 – $ 445,515 $ 25,422 $ 318,958 $ 79,947 $ 41,241 $ 441,000 2019 8,496 988,305 74,810 – 447,288 26,249 348,468 81,734 34,043 452,242 2018 6,568 865,339 71,625 – 432,880 22,048 345,864 78,105 23,514 444,398 (A) Allocations of certain expenses have been made to investment income, settlement expenses and other operating expenses and are based on a number of assumptions and estimates. Results among these categories would change if different methods were applied. (B) Commission allowances relating to reinsurance ceded are offset against other operating expenses.

Schedule IV - Reinsurance

Schedule IV - Reinsurance	12 Months Ended
	Dec. 31, 2020
Schedule IV - Reinsurance [Abstract]
Schedule IV - Reinsurance	SCHEDULE IV PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES REINSURANCE (in thousands) Direct Premiums Ceded to Other Companies Assumed from Other Companies Net Amount % of Amount Assumed to Net Premiums Earned - Years Ended December 31: 2020 $ 557,795 $ 113,125 $ 845 $ 445,515 0.2 % 2019 570,959 124,446 775 447,288 0.2 % 2018 562,364 131,080 1,596 432,880 0.4 % Note: Included in Ceded to Other Companies is $0 for each of 2020, 2019 and 2018 relating to retrocessions associated with premiums assumed from other companies. Percentage of Amount Assumed to Net above considers the impact of this retrocession.

Schedule V - Valuation Allowanc

Schedule V - Valuation Allowance and Qualifying Accounts	12 Months Ended
	Dec. 31, 2020
Schedule V - Valuation Allowances and Qualifying Accounts [Abstract]
Schedule V - Valuation Allowances and Qualifying Accounts	SCHEDULE V PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES VALUATION ALLOWANCES AND QUALIFYING ACCOUNTS (in thousands) Additions Description Balance as of Beginning of Period Charged to Costs and Expenses Other Additions Deductions Balance as of End of Period January 1, 2018 Accounts receivable $ 484 $ 29 – $ 110 $ 403 Reinsurance recoverable 1,365 32 – 278 1,119 December 31, 2018 1,849 61 – 388 1,522 Accounts receivable 403 1,908 – 78 2,233 Reinsurance recoverable 1,119 52 – – 1,171 December 31, 2019 1,522 1,960 – 78 3,404 Fixed income securities – 1,035 – – 1,035 Accounts receivable 2,233 1,250 – 23 3,460 Reinsurance recoverable 1,171 – – 199 972 Deductible receivable allowance (2) – 16,500 – – 16,500 Mortgage loans – 195 – – 195 December 31, 2020 $ 3,404 $ 18,980 – $ 222 $ 22,162 (1) Effective January 1, 2020 the Company adopted the measurement of credit losses on financial instruments accounting standard that primarily affected its accounts receivable, reinsurance recoverable and commercial mortgage loans balances. After consideration of existing valuation allowances maintained prior to adopting the new guidance, the Company increased its valuation allowance for credit losses at January 1, 2020 to conform to the new requirements. (2) In conjunction with the adoption of the credit losses accounting standard, the Company recorded an allowance for expected credit losses of $ related to the PSG litigation matter. See Note T – Litigation, Commitments and Contingencies for further discussion.

Schedule VI - Supplemental Info

Schedule VI - Supplemental Information Concerning Property/Casualty Insurance Operations	12 Months Ended
	Dec. 31, 2020
Schedule VI - Supplemental Information Concerning Property/Casualty Insurance Operations
Schedule VI - Supplemental Information Concerning Property/Casualty Insurance Operations	SCHEDULE VI PROTECTIVE INSURANCE CORPORATION AND SUBSIDIARIES SUPPLEMENTAL INFORMATION CONCERNING PROPERTY/CASUALTY INSURANCE OPERATIONS (in thousands) As of December 31 Year Ended December 31 Deferred Policy Reserves for Unpaid Claims Discount, if any Deducted Net Claims and Claim Adjustment Expenses Incurred Related to Amortization of Deferred Policy Paid Claims and Claims Net Affiliation with Registrant Acquisition Costs Adjustment Expenses from Reserves Unearned Premiums Earned Premiums Investment Income Current Year Prior Years Acquisition Costs Adjustment Expenses Premiums Written Consolidated Property/Casualty Subsidiaries: 2020 $ 9,744 $ 1,089,669 $ – $ 63,731 $ 445,515 $ 25,422 $ 319,269 $ (311 ) $ 79,947 $ 243,657 $ 441,000 2019 8,496 988,305 – 74,810 447,288 26,249 349,018 (550 ) 81,734 247,872 452,242 2018 6,568 865,339 – 71,625 432,880 22,048 329,078 16,786 78,105 228,591 444,398

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Summary of Significant Accounting Policies [Abstract]
Description of Business	Description of Business: The term “Insurance Subsidiaries,” as used throughout this Annual Report on Form 10-K, refers to Protective Insurance Company, Protective Specialty Insurance Company, Sagamore Insurance Company and B&L Insurance, Ltd. Effective August 1, 2018, the Company changed its name to Protective Insurance Corporation to better align its holding company's and Insurance Subsidiaries' identities and to reflect its position within the insurance industry.
Basis of Presentation	Basis of Presentation:
Use of Estimates	Use of Estimates:
Cash and Cash Equivalents	Cash and Cash Equivalents:
Investments	Investments : Commercial mortgage loans are carried primarily at amortized cost along with an allowance for losses when necessary. These investments represent interests in commercial mortgage loans originated and serviced by a third party of which the Company shares, on a pro-rata basis, in all related cash flows of the underlying mortgage loans. The Company recorded an allowance of $195 on its commercial mortgage loans as of December 31, 2020 in conjunction with the adoption of the credit losses accounting standard discussed below. The Company accounts for investments in limited partnerships using the equity method of accounting, which requires an investor in a limited partnership to record its proportionate share of the limited partnership's net income. To the extent the limited partnerships include both realized and unrealized investment gains or losses in the determination of net income or loss, then the Company would also recognize, through its consolidated statements of operations, its proportionate share of the investee's unrealized, as well as realized, investment gains or losses within net unrealized gains (losses) on equity securities and limited partnership investments. Short-term and other investments are carried at cost, which approximates their fair values. Fixed income securities are considered to be available-for-sale. The related unrealized net gains or losses (net of applicable tax effects) on fixed income securities are reflected directly in other comprehensive income (loss) within shareholders' equity. Included within available-for-sale fixed income securities are convertible debt securities. A portion of the changes in the fair values of convertible debt securities is reflected as a component of net realized gains (losses) on investments, excluding impairment losses within the consolidated statements of operations. Realized gains and losses on disposals of fixed income securities are recorded on the trade date. Realized gains and losses on fixed income securities are determined by the specific identification of the cost of investments sold and are included in net realized gains (losses) on investments, excluding impairment losses. Equity securities are recorded at fair value, with unrealized net gains or losses reflected as a component of net unrealized gains (losses) on equity securities and limited partnership investments within the consolidated statements of operations. Realized gains and losses on disposals of equity securities are recorded on the trade date and included in net realized gains (losses) on investments, excluding impairment losses.
Investment Impairments	Investment Impairments: For a fixed income security that the Company does not intend to sell or in cases where it is more likely than not that the Company will not have to sell the security, the Company separates the credit loss component of the impairment from the amount related to all other factors and reports the credit loss component within net realized gains (losses) on investments, excluding impairment losses in the consolidated statements of operations. The impairment related to all other factors (non-credit factors) is reported in other comprehensive income (loss). The allowance is adjusted for any additional credit losses and subsequent recoveries. Upon recognizing a credit loss, the cost basis is not adjusted. The Company considers the extent to which fair value is below amortized cost in determining whether a credit-related loss exists. The Company also considers the credit quality rating of the security, focusing on those below investment grade, with emphasis on securities downgraded below investment grade. The credit loss is determined by comparing the net present value of projected future cash flows with the amortized cost basis of the fixed income security. The net present value is calculated by discounting the Company's best estimate of projected future cash flows at the appropriate effective interest rate. Additionally, the Company may conclude that a qualitative analysis is sufficient to support its conclusion that the present value of the expected cash flows equals or exceeds a security’s amortized cost. The Company reports investment income due and accrued separately from available-for-sale fixed income securities and has elected not to measure an allowance for credit losses for investment income due and accrued. Investment income due and accrued is written off through net realized gains (losses) on investments, excluding impairment losses at the time the issuer defaults or is expected to default on payments.
Deductible Receivables	Deductible Receivables :
Property and Equipment	Property and Equipment:
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets:
Reserves for Losses and Loss Expenses	Reserves for Losses and Loss Expenses:
Recognition of Revenue and Costs	Recognition of Revenue and Costs:
Reinsurance	Reinsurance Should impairment in the ability of a reinsurer to satisfy its obligations to the Company be determined to exist, current year operations would be charged in amounts sufficient to provide for the Company's additional liability. Such charges, when incurred, are included in other operating expenses, rather than losses and loss expenses incurred, because the inability of the Company to collect from reinsurers is a credit risk rather than a deficiency associated with the loss reserving process.
Deferred Taxes	Deferred Taxes:
Restricted Stock	Restricted Stock:
Earnings (Loss) Per Share	Earnings (Loss) Per Share:
Comprehensive Income (Loss)	Comprehensive Income (Loss):
Fair Value Measurements	Fair Value Measurements:
Insurance Company-Owned Life Insurance	Insurance Company-Owned Life Insurance:
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements: In February 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-02, Leases (Topic 842), or ASU 2016-02. ASU 2016-02 superseded the prior lease guidance in ASC Topic 840, Leases. Under the new guidance, lessees are required to recognize for all leases, with the exception of short-term leases, a lease liability, which is a lessee's obligation to make lease payments arising from a lease, measured on a discounted basis. Concurrently, lessees are required to recognize a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. The guidance provided for a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative periods presented in the financial statements. In July 2018, the FASB issued ASU 2018-11, Leases (Topic 842): Targeted Improvements, or ASU 2018-11, which provided adopters an additional transition method by allowing entities to initially apply ASU 2016-02, and subsequent related standards, at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. The Company adopted the new guidance on January 1, 2019 utilizing the transition method allowed per ASU 2018-11, and accordingly, comparative period financial information was not adjusted for the effects of the new guidance. No cumulative-effect adjustment was required to the opening balance of retained earnings on the adoption date. The Company's adoption of the new standard did not have any impact on the Company's consolidated statements of operations or cash flows. As of December 31, 2020 the Company had a right-of-use asset and a lease liability recorded within the consolidated balance sheet, each of approximately $120, which are included within other assets and accounts payable and other liabilities. In July 2018, the FASB issued ASU No. 2018-09, Codification Improvements. This update provided clarification, corrected errors in and made minor improvements to various ASC topics. Many of the amendments in this update had transition guidance with effective dates for annual periods beginning after December 15, 2018, and some amendments in this update did not require transition guidance and were effective upon issuance of this update. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, or ASU 2016-13. ASU 2016-13 introduced a current expected credit loss (CECL) model for measuring expected credit losses for certain types of financial instruments held at the reporting date requiring significant judgment in application based on historical experience, current conditions and reasonable supportable forecasts, but is not prescriptive about certain aspects of estimating expected losses. The guidance replaced the current incurred loss model for measuring expected credit losses and provided for additional disclosure requirements. Subsequently, the FASB issued additional ASUs on Topic 326 that did not change the core principle of the guidance in ASU 2016-13, but provided clarification and implementation guidance on certain aspects of ASU 2016-13, and have the same effective date and transition requirements as ASU 2016-13. The Company adopted the guidance recognized an pre-tax cumulative effect adjustment of $ ($ , net of tax), The updated guidance in ASU 2016-13 also amended the previous other-than-temporary impairment (“OTTI”) model for available-for-sale fixed income securities by requiring the recognition of impairments relating to credit losses through an allowance account and limits the amount of credit loss to the difference between a security’s amortized cost basis and its fair value. In addition, the length of time a security has been in an unrealized loss position will no longer impact the determination of whether a credit loss exists. The Company adopted the guidance related to available-for-sale fixed income securities on January 1, 2020 using a prospective transition approach for available-for-sale fixed income securities that were purchased with credit deterioration or had recognized an OTTI write-down prior to the effective date. The effect of the prospective transition approach was to maintain the same amortized cost basis before and after the effective date. I n August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement, or ASU 2018-13. This update removed the disclosure requirements for the amounts of and the reasons for transfers between Level 1 and Level 2 and disclosure of the policy for timing of transfers between levels. This update also removed disclosure requirements for the valuation processes for Level 3 fair value measurements. Additionally, this update added disclosure requirements for the changes in unrealized gains and losses for recurring Level 3 fair value measurements and quantitative information for certain unobservable inputs in Level 3 fair value measurements. The Company adopted ASU 2018-13 as of January 1, 2020. As the requirements of this guidance are applicable to disclosure only, the adoption of ASU 2018-13 had no material impact on the Company's consolidated financial statements.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements: In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, or ASU 2019-12. Among other items, the amendments in ASU 2019-12 simplify the accounting treatment of tax law changes and year-to-date losses in interim periods. An entity generally recognizes the effects of a change in tax law in the period of enactment; however, there is an exception for tax laws with delayed effective dates. Under current guidance, an entity may not adjust its annual effective tax rate for a tax law change until the period in which the law is effective. This exception was removed under ASU 2019-12, thereby providing that all effects of a tax law change are recognized in the period of enactment, including adjustment of the estimated annual effective tax rate. Regarding year-to-date losses in interim periods, an entity is required to estimate its annual effective tax rate for the full fiscal year at the end of each interim period and use that rate to calculate its income taxes on a year-to-date basis. However, current guidance provides an exception that when a loss in an interim period exceeds the anticipated loss for the year, the income tax benefit is limited to the amount that would be recognized if the year-to-date loss were the anticipated loss for the full year. ASU 2019-12 removes this exception and provides that in this situation, an entity would compute its income tax benefit at each interim period based on its estimated annual effective tax rate. ASU 2019-12 became effective on January 1, 2021 and is not expected to have a material effect on the Company's consolidated financial statements.

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2020
Investments [Abstract]
Available-for-Sale Securities	The following is a summary of available-for-sale securities at December 31: Fair Value Cost or Amortized Cost Allowance for Credit Losses Gross Unrealized Gains Gross Unrealized Losses Net Unrealized Gains (Losses) December 31, 2020 Fixed income securities Agency collateralized mortgage obligations $ 11,931 $ 11,448 $ – $ 483 $ – $ 483 Agency mortgage-backed securities 102,107 99,060 – 3,062 (15 ) 3,047 Asset-backed securities 107,696 108,686 – 596 (1,586 ) (990 ) Bank loans 11,361 11,590 – 128 (357 ) (229 ) Collateralized mortgage obligations 5,118 5,061 – 151 (94 ) 57 Corporate securities 360,241 344,059 – 16,380 (198 ) 16,182 Mortgage-backed securities 38,056 40,675 (1,035 ) 659 (2,243 ) (1,584 ) Municipal obligations 45,143 43,353 – 1,820 (30 ) 1,790 Non-U.S. government obligations 30,600 29,882 – 718 – 718 U.S. government obligations 207,439 200,654 – 7,000 (215 ) 6,785 Total fixed income securities $ 919,692 $ 894,468 $ (1,035 ) $ 30,997 $ (4,738 ) $ 26,259 Fair Value Cost or Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Net Unrealized Gains (Losses) December 31, 2019 Fixed income securities Agency collateralized mortgage obligations $ 12,093 $ 11,557 $ 536 $ – $ 536 Agency mortgage-backed securities 56,280 54,286 2,005 (11 ) 1,994 Asset-backed securities 106,397 107,028 499 (1,130 ) (631 ) Bank loans 14,568 14,932 106 (470 ) (364 ) Certificates of deposit 2,835 2,835 – – – Collateralized mortgage obligations 5,616 5,123 493 – 493 Corporate securities 281,381 274,340 7,492 (451 ) 7,041 Mortgage-backed securities 47,463 46,685 1,047 (269 ) 778 Municipal obligations 36,286 35,749 684 (147 ) 537 Non-U.S. government obligations 24,179 23,889 290 – 290 U.S. government obligations 208,440 206,623 2,891 (1,074 ) 1,817 Total fixed income securities $ 795,538 $ 783,047 $ 16,043 $ (3,552 ) $ 12,491
Fixed Income Securities in Unrealized Loss Position	The following table summarizes, for available-for-sale fixed income securities in an unrealized loss position at December 31, 2020 and December 31, 2019, the aggregate fair value and gross unrealized loss categorized by the duration individual securities have been continuously in an unrealized loss position. 2020 2019 Number of Securities Fair Value Gross Unrealized Loss Number of Securities Fair Value Gross Unrealized Loss Fixed income securities: 12 months or less 100 $ 120,630 $ (3,405 ) 88 $ 108,387 $ (2,452 ) Greater than 12 months 24 33,065 (1,333 ) 69 66,860 (1,100 ) Total fixed income securities 124 $ 153,695 $ (4,738 ) 157 $ 175,247 $ (3,552 )
Fixed Income Investments by Contractual Maturity	The fair value and the cost or amortized costs of fixed income investments at December 31, 2020, organized by contractual maturity, are shown below. Actual maturities may ultimately differ from contractual maturities because borrowers have, in some cases, the right to call or prepay obligations with or without call or prepayment penalties. Pre-refunded municipal bonds are classified based on their pre-refunded call dates. Fair Value Cost or Amortized Cost One year or less $ 117,017 12.7 % $ 115,774 12.9 % Excess of one year to five years 359,314 39.1 346,150 38.7 Excess of five years to ten years 161,700 17.6 151,446 16.9 Excess of ten years 21,871 2.4 22,264 2.6 Total contractual maturities 659,902 71.8 635,634 71.1 Asset-backed securities 259,790 28.2 258,834 28.9 Total $ 919,692 100.0 % $ 894,468 100.0 %
Major Categories of Investment Income	Major categories of investment income for the years ended December 31, 2020, 2019 and 2018 are summarized as follows: 2020 2019 2018 Interest on fixed income securities $ 24,874 $ 24,620 $ 19,092 Dividends on equity securities 1,868 2,320 4,380 Money market funds, Short-term and other 1,070 1,976 1,529 27,812 28,916 25,001 Investment expenses (2,390 ) (2,667 ) (2,953 ) Net investment income $ 25,422 $ 26,249 $ 22,048
Gains (Losses) on Investments	Following is a summary of the components of net realized and unrealized gains (losses) for the years ended December 31, 2020, 2019 and 2018: 2020 2019 2018 Gross gains on available-for-sale fixed income securities during the period: $ 11,125 $ 11,009 $ 10,807 Gross losses on available-for-sale fixed income securities during the period: (9,943 ) (10,492 ) (14,367 ) Impairment losses on investments (2,861 ) (497 ) (19 ) Change in value of limited partnership investments (1,442 ) 1,644 (9,343 ) Gains (losses) on equity securities: Realized gains (losses) on equity securities sold during the period (1) (8,058 ) 1,938 (3,072 ) Unrealized gains (losses) on equity securities held at the end of the period 1,943 9,287 (9,697 ) Total realized and unrealized gains (losses) on equity securities (6,115 ) 11,225 (12,769 ) Net realized and unrealized gains (losses) on investments $ (9,236 ) $ 12,889 $ (25,691 ) (1) During 2018, the Company sold $149,195 in equity securities, resulting in a gain on sale of $51,900. The majority of these gains were included in unrealized gains within other comprehensive income (loss) at December 31, 2017 and, as a result of the adoption of ASU 2016-01, were reclassified to retained earnings as of January 1, 2018 and were therefore not recognized in the consolidated statements of operations for the year ended December 31, 2018.
Adjustments for Other-than-temporary Impairment	Gain and loss activity for fixed income securities, as shown in the previous table, includes adjustments for impairment losses on investments for the years ended December 31, 2020, 2019 and 2018 summarized as follows: 2020 2019 2018 Cumulative charges to income at beginning of year $ 889 $ 930 $ 4,209 Write-downs based on objective and subjective criteria 1,826 497 19 Recovery of prior write-downs upon sale or disposal (909 ) (538 ) (3,298 ) Net pre-tax realized gain (loss) (917 ) 41 3,279 Cumulative charges to income at end of year $ 1,806 $ 889 $ 930

Loss and Loss Expense Reserves

Loss and Loss Expense Reserves (Tables)	12 Months Ended
	Dec. 31, 2020
Loss and Loss Expense Reserves [Abstract]
Activity in Reserves for Losses and Loss Expenses	Activity in the reserves for losses and loss expenses for the years ended December 31, 2020, 2019 and 2018 is summarized as follows. All amounts are shown net of reinsurance, unless otherwise indicated. 2020 2019 2018 Reserves, gross of reinsurance recoverable, at the beginning of the year $ 988,305 $ 865,339 $ 680,274 Reinsurance recoverable on unpaid losses at the beginning of the year 398,305 375,935 308,143 Reserves at the beginning of the year 590,000 489,404 372,131 Provision for losses and loss expenses: Claims occurring during the current year 319,269 349,018 329,078 Claims occurring during prior years (311 ) (550 ) 16,786 Total incurred losses and loss expenses 318,958 348,468 345,864 Loss and loss expense payments: Claims occurring during the current year 77,880 90,364 84,738 Claims occurring during prior years 165,777 157,508 143,853 Total paid 243,657 247,872 228,591 Reserves at the end of the year 665,301 590,000 489,404 Reinsurance recoverable on unpaid losses at the end of the year 424,368 398,305 375,935 Reserves, gross of reinsurance recoverable, at the end of the year $ 1,089,669 $ 988,305 $ 865,339 The following table reconciles the triangles presented in this note to the total (savings) / deficiency for the Company of $311 shown in the table above: Prior Year (Savings) / Deficiency 2020 2019 2018 Workers' Compensation $ 1,431 $ (2,733 ) $ (9,601 ) Commercial Auto Liability 10,717 8,893 32,342 Occupational Accident (7,467 ) 688 (4,178 ) Physical Damage (1,684 ) (4,561 ) (1,066 ) Professional Liability Assumed 189 259 2,343 Other short-duration contracts (3,497 ) (3,096 ) (3,054 ) Total $ (311 ) $ (550 ) $ 16,786
Incurred Claims Development, Net of Reinsurance	The following is information about incurred and paid claims development as of December 31, 2020, net of reinsurance, as well as cumulative claim frequency and the total of incurred‐but‐not‐reported liabilities plus expected development on reported claims included within the net incurred claims amounts. Workers' Compensation As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported Accident Year For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Claims Per Year 2011 $ 26,057 $ 26,628 $ 26,958 $ 26,767 $ 25,515 $ 27,293 $ 26,617 $ 26,631 $ 26,452 $ 26,356 $ 1,989 4,547 2012 23,965 25,544 24,887 24,485 25,616 27,020 26,775 25,508 26,397 2,327 4,484 2013 27,619 30,638 29,913 32,121 32,553 31,131 31,066 31,360 3,137 5,282 2014 36,768 36,968 34,009 33,427 31,031 31,579 31,551 3,772 5,413 2015 26,277 23,115 25,889 24,948 25,436 25,167 3,367 6,340 2016 35,240 29,757 29,317 30,060 29,785 3,693 6,087 2017 42,387 37,731 36,211 34,930 5,921 16,469 2018 62,973 61,530 62,451 13,632 14,295 2019 65,837 67,113 19,079 9,480 2020 60,204 34,084 7,550 Total $ 395,314 $ 91,001 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 4,916 $ 11,912 $ 15,973 $ 18,884 $ 20,617 $ 21,622 $ 22,569 $ 22,991 $ 23,366 $ 23,516 2012 4,597 11,004 14,834 17,415 18,946 20,276 21,157 21,636 21,850 2013 4,880 12,792 18,065 21,655 23,643 24,968 25,847 26,702 2014 5,328 13,665 19,075 22,387 23,968 24,714 25,507 2015 2,918 10,128 15,020 17,487 19,385 20,251 2016 5,784 13,377 18,461 21,304 23,113 2017 6,150 15,811 20,863 23,910 2018 10,987 27,862 36,794 2019 13,171 31,140 2020 10,508 Total $ 243,291 Outstanding liabilities prior to 2011, net of reinsurance 16,836 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 168,859 Commercial Liability As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Claims Per Year 2011 $ 46,829 $ 43,832 $ 31,633 $ 36,894 $ 35,805 $ 37,122 $ 36,076 $ 37,852 $ 37,795 $ 38,773 $ 21 2,902 2012 49,743 54,269 49,743 51,367 48,708 51,475 51,648 51,962 51,830 443 3,131 2013 53,817 39,143 37,701 36,371 46,690 48,857 51,598 51,293 270 3,753 2014 49,971 52,254 52,483 52,964 64,372 70,841 72,636 1,051 3,325 2015 61,420 70,174 64,323 71,088 75,503 77,225 1,736 3,198 2016 61,638 68,974 77,362 79,015 80,788 2,420 3,751 2017 103,126 103,611 99,287 97,663 12,197 5,403 2018 179,589 177,262 186,521 29,518 8,197 2019 198,022 195,273 53,842 8,313 2020 173,878 109,654 4,410 Total $ 1,025,880 $ 211,152 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 1,809 $ 11,350 $ 23,615 $ 30,795 $ 33,255 $ 34,009 $ 35,561 $ 36,400 $ 37,263 $ 37,267 2012 3,086 23,252 32,942 45,303 47,601 50,036 50,750 50,882 50,908 2013 5,167 15,772 25,270 34,481 44,865 46,084 49,522 49,879 2014 4,023 9,046 28,393 45,075 57,692 68,392 69,183 2015 10,923 27,582 49,267 63,133 71,697 74,276 2016 6,843 30,377 52,764 70,324 74,324 2017 11,415 46,529 58,173 73,496 2018 18,689 66,575 101,803 2019 19,311 64,294 2020 13,185 Total $ 608,615 Outstanding liabilities prior to 2011, net of reinsurance 3,433 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 420,698 Professional Liability Reinsurance Assumed (in runoff) As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported Accident Year For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 Claims Per Year 2011 $ 10,492 $ 8,314 $ 9,017 $ 9,859 $ 10,779 $ 12,735 $ 12,744 $ 12,725 $ 13,018 $ 13,228 $ 219 N/A 2012 10,041 9,276 5,569 10,157 14,605 16,555 14,949 16,013 16,439 489 N/A 2013 14,370 13,034 11,618 17,694 23,256 22,213 23,474 23,381 1,764 N/A 2014 12,675 8,825 7,259 9,837 12,749 10,721 10,619 1,256 N/A 2015 11,638 7,859 7,147 10,422 8,753 8,404 1,959 N/A 2016 6,368 2,482 1,522 2,993 3,090 435 N/A 2017 – – – – – N/A 2018 – – – – N/A 2019 – – – N/A 2020 – – N/A Total $ 75,161 $ 6,122 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 50 $ 637 $ 2,061 $ 4,983 $ 8,104 $ 10,404 $ 11,679 $ 12,280 $ 12,404 $ 12,629 2012 103 992 2,388 5,077 8,355 11,239 13,091 13,706 14,403 2013 123 1,135 5,088 10,988 14,779 18,229 19,201 20,157 2014 723 761 2,241 3,999 6,627 7,732 8,890 2015 10 390 1,899 3,207 3,964 5,162 2016 – 5 99 2,254 2,496 2017 – – – – 2018 – – – 2019 – – 2020 – Total $ 63,737 Outstanding liabilities prior to 2011, net of reinsurance 534 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 11,958 Occupational Accident As of December 31, 2020 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not-Reported Liabilities Plus Expected Development Number of Reported Accident Year For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) on Reported Claims 2011 2012 2013 2014 2015 2016 2017 2018 2018 2020 Claims Per Year 2011 $ 6,249 $ 6,937 $ 6,485 $ 6,283 $ 6,151 $ 6,297 $ 6,264 $ 6,263 $ 6,287 $ 6,275 $ 2 472 2012 5,272 4,168 3,908 3,758 3,585 3,566 3,551 3,773 3,758 8 380 2013 6,410 5,044 4,403 4,390 4,166 4,107 4,082 4,082 – 337 2014 5,283 4,865 4,147 4,093 4,031 4,061 4,041 38 325 2015 3,897 3,539 3,715 3,846 3,832 3,698 111 275 2016 6,729 6,312 5,847 5,965 4,894 112 704 2017 17,041 13,334 12,976 11,031 111 1,040 2018 16,365 17,053 12,147 412 892 2018 10,498 11,134 1,469 882 2020 12,869 2,508 772 Total $ 73,929 $ 4,771 Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2011-2019 is Supplementary Information and Unaudited) Accident Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2011 $ 2,159 $ 4,861 $ 6,003 $ 6,050 $ 6,020 $ 6,278 $ 6,219 $ 6,232 $ 6,246 $ 6,267 2012 1,082 2,648 3,190 3,390 3,377 3,442 3,482 3,521 3,555 2013 1,989 3,565 3,768 4,108 4,110 4,107 4,082 4,082 2014 2,000 3,685 3,861 3,909 3,948 3,968 3,968 2015 739 1,934 2,670 2,988 3,224 3,285 2016 1,596 4,388 4,818 4,807 4,785 2017 3,229 7,756 9,126 9,645 2018 5,324 9,807 10,642 2019 4,007 7,782 2020 4,978 Total $ 58,989 Outstanding liabilities prior to 2011, net of reinsurance 99 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 15,039 Physical Damage (1) As of December 31, 2020 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Total of Incurred-but-Not- Reported Liabilities Plus Number of For the Years Ended December 31 (2018-2019 is Supplementary Information and Unaudited) Expected Development Reported Claims Accident Year 2018 2019 2020 on Reported Claims Per Year 2018 $ 53,726 $ 50,122 $ 49,767 $ 22 11,151 2019 – 55,354 54,126 141 10,472 2020 – 56,602 3,233 9,130 Total $ 160,495 $ 3,396 Incurred Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance For the Years Ended December 31 (2018-2019 is Supplementary Information and Unaudited) Accident Year 2018 2019 2020 2018 $ 41,631 $ 49,685 $ 49,638 2019 – 44,197 53,647 2020 – 42,726 Total $ 146,011 Outstanding liabilities prior to 2018, net of reinsurance 77 Liabilities for claims and claims adjustment expenses, net of reinsurance $ 14,561 (1) The majority of physical damage claims settle within a two-year period. The triangles above have been abbreviated to reflect the short-tail nature of this business.
Reconciliation of Net Incurred and Paid Claims Development	The reconciliation of the net incurred and paid claims development tables to the liability for claims and claim adjustment expenses in the consolidated balance sheet at December 31, 2020 and 2019 is as follows. 2020 2019 Net outstanding liabilities Commercial Liability $ 420,698 $ 355,148 Workers' Compensation 168,859 154,409 Occupational Accident 15,039 19,840 Physical Damage 14,561 11,676 Professional Liability Assumed 11,958 16,079 Other short-duration insurance lines 10,016 10,478 Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 641,131 567,630 Reinsurance recoverable on unpaid claims Commercial Liability 209,126 209,152 Workers' Compensation 211,421 182,908 Occupational Accident 500 1,979 Physical Damage 1,054 655 Other short-duration insurance lines 2,267 3,611 Reinsurance recoverable on unpaid losses at the end of the year 424,368 398,305 Unallocated claims adjustment expenses 24,170 22,370 Total gross liability for unpaid claims and claims adjustment expense $ 1,089,669 $ 988,305
Supplementary Information about 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 (Supplementary Information and Unaudited) Years 1 2 3 4 5 6 7 8 9 10 Commercial Liability 8.8% 25.2% 22.8% 19.8% 8.9% 5.4% 3.3% 0.8% 1.1% – Workers' Compensation 16.9% 26.5% 16.1% 10.1% 6.2% 3.8% 3.1% 2.0% 1.1% 0.6% Occupational Accident 36.2% 40.7% 11.2% 4.1% 1.0% 1.6% (0.1)% 0.4% 0.6% 0.3% Physical Damage 81.6% 16.3% (0.4)% N/A N/A N/A N/A N/A N/A N/A Professional Liability Assumed 1.4% 3.2% 11.8% 27.6% 16.9% 14.9% 9.0% 4.1% 2.6% 1.7%

Reinsurance (Tables)

Reinsurance (Tables)	12 Months Ended
	Dec. 31, 2020
Reinsurance [Abstract]
Impact of Reinsurance Ceded and Assumed on the Company's Net Premium Written and Earned	The following table summarizes the impact of reinsurance ceded and assumed on the Company's net premiums written and earned for the most recent three years: Premiums Written Premiums Earned 2020 2019 2018 2020 2019 2018 Direct $ 546,708 $ 574,181 $ 581,070 $ 557,795 $ 570,959 $ 562,364 Ceded on direct (106,561 ) (122,676 ) (138,102 ) (113,125 ) (124,446 ) (131,080 ) Net direct 440,147 451,505 442,968 444,670 446,513 431,284 Assumed 853 737 1,430 845 775 1,596 Ceded on assumed – – – – – – Net assumed 853 737 1,430 845 775 1,596 Net $ 441,000 $ 452,242 $ 444,398 $ 445,515 $ 447,288 $ 432,880
Components of Reinsurance Recoverable	Components of reinsurance recoverable at December 31, 2020 and 2019 are as follows: 2020 2019 Case unpaid losses, net of allowance for reinsurance $ 166,171 $ 166,675 Incurred but not reported unpaid losses and loss expenses 257,225 230,459 Paid losses and loss expenses 24,133 20,334 Unearned premiums 8,035 14,599 $ 455,564 $ 432,067

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Taxes [Abstract]
Significant Components of Deferred Tax Assets and Liabilities	Deferred income taxes are calculated to account for the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company's deferred tax assets and liabilities as of December 31, 2020 and 2019 are as follows: 2020 2019 Deferred tax liabilities: Unrealized gain on fixed income and equity security investments $ 8,159 $ 5,327 Deferred acquisition costs 2,538 2,821 Loss and loss expense reserves 2,222 2,701 Limited partnership investments – 2,587 Accelerated depreciation 669 687 Other 1,495 1,361 Total deferred tax liabilities 15,083 15,484 Deferred tax assets: Loss and loss expense reserves 12,923 11,460 Limited partnership investments 822 – Unearned premiums discount 2,339 2,529 Impairment related investment declines 435 39 Deferred compensation 1,999 1,181 Deferred ceding commission 492 1,037 Allowance for credit losses 3,580 – Other 1,473 1,273 Total deferred tax assets 24,063 17,519 Net deferred tax assets $ 8,980 $ 2,035
Difference between Federal Income Taxes Expense (Benefit) Computed at Statutory Rate	A summary of the difference between federal income tax expense (benefit) computed at the statutory rate and that reported in the consolidated financial statements as of December 31, 2020, 2019 and 2018 is as follows: 2020 2019 2018 Statutory federal income rate applied to pre-tax income (loss) $ 1,336 $ 1,821 $ (9,213 ) Tax effect of (deduction): Tax-exempt investment income (239 ) (402 ) (253 ) Valuation allowance 1,264 – – Other (461 ) (93 ) (331 ) Federal income tax expense (benefit) $ 1,900 $ 1,326 $ (9,797 )
Federal Income Tax Expense (Benefit)	Federal income tax expense (benefit) as of December 31, 2020, 2019 and 2018 consists of the following: 2020 2019 2018 Tax expense (benefit) on pre-tax income (loss): Current $ 7,144 $ 1,377 $ 8,997 Deferred (5,244 ) (51 ) (18,794 ) $ 1,900 $ 1,326 $ (9,797 )
Provision for Deferred Federal Income Tax	The provision for deferred federal income taxes as of December 31, 2020, 2019 and 2018 consists of the following: 2020 2019 2018 Limited partnerships $ (3,409 ) $ 1,143 $ (2,383 ) Discounts of loss and loss expense reserves (1,944 ) (2,269 ) (2,704 ) Reserves - salvage and subrogation and other 1 (74 ) 427 Unearned premium discount 190 (208 ) (484 ) Deferred compensation (818 ) (600 ) 305 Impairment related investment declines (1,400 ) (411 ) 695 Deferred acquisitions costs and ceding commission 262 405 201 Unrealized gains / losses (59 ) 1,837 (13,876 ) Valuation allowance 1,264 – – Other 669 126 (975 ) Provision for deferred federal income taxes $ (5,244 ) $ (51 ) $ (18,794 )

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2020
Shareholders' Equity [Abstract]
Reconciliation of Components of Accumulated Other Comprehensive Income (Loss)	A reconciliation of the components of accumulated other comprehensive income (loss) at December 31, 2020 and 2019 is as follows: 2020 2019 Investments: Total unrealized gain before federal income tax expense (benefit) $ 26,259 $ 12,491 Deferred tax benefit (liability) (1) (4,255 ) (2,628 ) Net unrealized gains on investments 22,004 9,863 Foreign exchange adjustment: Total unrealized losses (310 ) (625 ) Deferred tax benefit 65 131 Net unrealized losses on foreign exchange adjustment (245 ) (494 ) Accumulated other comprehensive income $ 21,759 $ 9,369 (1) Includes the $1,264 valuation allowance benefit recorded in other comprehensive income. See Note E - Income Taxes for additional information.
Details of Changes in Net Unrealized Gains (Losses) on Investments	Details of changes in net unrealized gains (losses) on investments for the years ended December 31, 2020, 2019 and 2018 are as follows: 2020 2019 2018 Investments: Pre-tax holding gains (losses) on fixed income securities arising during period $ 10,501 $ 19,182 $ (12,253 ) Less: applicable federal income tax expense (benefit) (1) 941 4,028 (2,573 ) 9,560 15,154 (9,680 ) Pre-tax gains (losses) on fixed income securities included in net income (loss) during period (1) (3,267 ) (1,161 ) (3,560 ) Less: applicable federal income tax expense (benefit) (686 ) (244 ) (748 ) (2,581 ) (917 ) (2,812 ) Change in unrealized gains (losses) on investments $ 12,141 $ 16,071 $ (6,868 ) (1) Includes the $1,264 valuation allowance benefit recorded in other comprehensive income. See Note E - Income Taxes for additional information.

Other Operating Expenses (Table

Other Operating Expenses (Tables)	12 Months Ended
	Dec. 31, 2020
Other Operating Expenses [Abstract]
Details of Other Operating Expenses	Details of other operating expenses for the years ended December 31: 2020 2019 2018 Amortization of gross deferred policy acquisition costs $ 79,947 $ 81,734 $ 78,105 Other underwriting expenses 66,005 59,975 46,638 Reinsurance ceded credits (24,764 ) (25,932 ) (23,124 ) Total underwriting expenses 121,188 115,777 101,619 Operating expenses of non-insurance companies 22,240 22,679 32,406 Goodwill impairment charge – – 3,152 Total other operating expenses $ 143,428 $ 138,456 $ 137,177

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2020
Stock Based Compensation [Abstract]
Detail of Restricted Stock Issuances	The Company issues shares of restricted Class B Common Stock to the Company's outside directors as part of their annual retainer compensation. The shares are distributed to the outside directors on the vesting date, which, with the exception of pro-rated annual retainers granted to outside directors, is one year following the date of grant. On May 17, 2019, the Company granted shares of restricted Class B Common Stock in connection with the election of a new outside director, reflecting such director’s pro-rated annual retainer compensation, which shares vested and were distributed on May 7, 2020. Additionally, effective May 22, 2019, John D. Nichols, Jr. ceased serving as the Company's Interim Chief Executive Officer and principal executive officer, but continued to serve as Chairman of the Company's Board of Directors. On May 22, 2019, the Company granted shares of restricted Class B Common Stock to Mr. Nichols in connection with this transition, reflecting his pro-rated annual retainer compensation, which shares also vested and were distributed on May 7, 2020. The table below provides details of the restricted stock issuances to directors for 2020, 2019 and 2018: Grant Date Number of Shares Issued Vesting Date Service Period Grant Date Fair Value Per Share 2/9/2018 408 5/9/2018 2/9/2018 - 6/30/2018 $ 24.20 5/8/2018 19,085 5/8/2019 7/1/2018 - 6/30/2019 $ 23.05 5/7/2019 29,536 5/7/2020 7/1/2019 - 6/30/2020 $ 16.25 5/17/2019 3,591 5/7/2020 5/17/2019 - 6/30/2020 $ 16.25 5/22/2019 3,541 5/7/2020 5/22/2019 - 6/30/2020 $ 16.25 5/5/2020 42,220 5/5/2021 7/1/2020 - 6/30/2021 $ 14.21

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2020
Segment Information [Abstract]
Segment Revenues	The following table summarizes segment revenues for the years ended December 31: 2020 2019 2018 Revenues: Net premiums earned $ 445,515 $ 447,288 $ 432,880 Net investment income 25,422 26,249 22,048 Net realized and unrealized gains (losses) on investments (9,236 ) 12,889 (25,691 ) Commissions and other income 7,048 9,171 9,932 Total revenues $ 468,749 $ 495,597 $ 439,169

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2020
Earnings (Loss) Per Share [Abstract]
Reconciliation of the Denominators used in the Calculation of Basic and Diluted Earnings (Loss) per Share	The following is a reconciliation of the denominators used in the calculation of basic and diluted earnings (loss) per share for the years ended December 31: 2020 2019 2018 Average shares outstanding for basic earnings (loss) per share 14,140,178 14,520,815 14,964,812 Dilutive effect of share equivalents 129,806 99,118 – Average shares outstanding for diluted earnings (loss) per share 14,269,984 14,619,933 14,964,812

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value [Abstract]
Assets Measured at Fair Value on Recurring Basis	Assets and liabilities recorded at fair value in the consolidated balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair value. The following tables summarize fair value measurements by level for assets measured at fair value on a recurring basis: As of December 31, 2020: Description Total Level 1 Level 2 Level 3 Fixed income securities: Agency collateralized mortgage obligations $ 11,931 $ – $ 11,931 $ – Agency mortgage-backed securities 102,107 – 102,107 – Asset-backed securities 107,696 – 107,696 – Bank loans 11,361 – 11,361 – Collateralized mortgage obligations 5,118 – 5,118 – Corporate securities 352,837 – 352,837 – Options embedded in convertible securities 7,404 – 7,404 – Mortgage-backed securities 38,056 – 38,056 – Municipal obligations 45,143 – 45,143 – Non-U.S. government obligations 30,600 – 30,600 – U.S. government obligations 207,439 – 207,439 – Total fixed income securities 919,692 – 919,692 – Equity securities: Consumer 11,598 11,598 – – Energy 1,227 1,227 – – Financial 29,064 29,064 – – Industrial 5,180 5,180 – – Technology 2,851 2,851 – – Other 8,249 8,249 – – Total equity securities 58,169 58,169 – – Short-term investments 1,000 1,000 – – Cash equivalents 47,026 – 47,026 – Total $ 1,025,887 $ 59,169 $ 966,718 $ – As of December 31, 2019: Description Total Level 1 Level 2 Level 3 Fixed income securities: Agency collateralized mortgage obligations $ 12,093 $ – $ 12,093 $ – Agency mortgage-backed securities 56,280 – 56,280 – Asset-backed securities 106,397 – 106,397 – Bank loans 14,568 – 14,568 – Certificates of deposit 2,835 2,835 – – Collateralized mortgage obligations 5,616 – 5,616 – Corporate securities 276,087 – 276,087 – Options embedded in convertible securities 5,294 – 5,294 – Mortgage-backed securities 47,463 – 47,463 – Municipal obligations 36,286 – 36,286 – Non-U.S. government obligations 24,179 – 24,179 – U.S. government obligations 208,440 – 208,440 – Total fixed income securities 795,538 2,835 792,703 – Equity securities: Consumer 16,707 16,707 – – Energy 3,074 3,074 – – Financial 31,577 31,577 – – Industrial 4,927 4,927 – – Technology 2,817 2,817 – – Funds (e.g., mutual funds, closed end funds, ETFs) 9,460 9,460 – – Other 8,250 8,250 – – Total equity securities 76,812 76,812 – – Short-term investments 1,000 1,000 – – Cash equivalents 59,780 – 59,780 – Total $ 933,130 $ 80,647 $ 852,483 $ –
Carrying Value and Fair Value by Level of Financial Instruments	A summary of the carrying value and fair value by level of financial instruments not recorded at fair value on the Company's consolidated balance sheets at December 31, 2020 and 2019 is as follows: Carrying Fair Value 2020 : Value Level 1 Level 2 Level 3 Total Assets: Limited partnerships $ 7,214 $ – $ – $ 7,214 $ 7,214 Commercial mortgage loans 10,602 – – 11,425 11,425 Liabilities: Short-term borrowings 20,000 – 20,000 – 20,000 2019: Assets: Limited partnerships $ 23,292 $ – $ – $ 23,292 $ 23,292 Commercial mortgage loans 11,782 – – 12,068 12,068 Liabilities: Short-term borrowings 20,000 – 20,000 – 20,000

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2020
Quarterly Results of Operations (Unaudited) [Abstract]
Quarterly Results of Operations	Quarterly results of operations are as follows: 2020 2019 1st 2nd 3rd 4th 1st 2nd 3rd 4th Net premiums earned $ 109,659 $ 97,730 $ 117,853 $ 120,273 $ 110,012 $ 115,631 $ 110,288 $ 111,357 Net investment income 7,236 6,379 5,486 6,321 6,231 6,500 6,703 6,815 Net realized and unrealized gains (losses) on investments (27,756 ) 10,615 144 7,761 6,027 2,889 125 3,848 Losses and loss expenses incurred 81,831 68,208 84,673 84,246 87,122 90,433 84,781 86,132 Net income (loss) (22,156 ) 11,367 3,281 11,971 2,748 1,535 (707 ) 3,771 Net income (loss) per diluted share $ (1.56 ) $ 0.80 $ 0.23 $ 0.84 $ 0.18 $ 0.11 $ (0.05 ) $ 0.26

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
Future Lease Payments for Operating Leases with Initial or Remaining Noncancelable Terms of One Year or More	The Company leases certain computer and related equipment using noncancelable operating leases. Lease expense for 2020, 2019 and 2018 was $135, $302 and $204, respectively. At December 31, 2020, future lease payments for operating leases with initial or remaining noncancelable terms of one year or more consisted of the following: 2021 $ 103 2022 18 2023 – 2024 and thereafter – Total minimum payments required $ 121

Summary of Significant Accoun_3

Summary of Significant Accounting Policies, Significant Accounting Policies (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2020USD ($)Segment	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Description of Business [Abstract]
Number of reportable segments | Segment		1
Deductible Receivables [Abstract]
Allowance for credit losses, net of tax		$ 1,035
Goodwill and Other Intangible Assets [Abstract]
Goodwill impairment loss	$ 3,152	0	$ 0	$ 3,152
Insurance Company-Owned Life Insurance [Abstract]
Insurance company-owned life insurance		11,458	11,049
Commercial Mortgage Loans [Member]
Investments [Abstract]
Commercial mortgage loans, valuation allowance		195
ASU 2016-13 [Member]
Deductible Receivables [Abstract]
Allowance for credit losses, before tax		16,500	15,000
Allowance for credit losses, net of tax		$ 13,035	$ 11,850

Summary of Significant Accoun_4

Summary of Significant Accounting Policies, Recently Adopted Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax	$ 363,082	$ 364,316	$ 356,082	$ 418,811
Allowance for credit losses, net of tax	1,035
Right-of-use asset	120
Lease liability	120
ASU 2018-11 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Right-of-use asset	120
Lease liability	120
ASU 2016-13 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Allowance for credit losses, before tax	16,500	15,000
Allowance for credit losses, net of tax	13,035	11,850
Other Comprehensive Income (Loss) [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax	21,759	9,369	(7,347)	46,391
Retained Earnings [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax	$ 286,143	300,988	$ 308,075	316,700
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-01 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax				0
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax		(12,281)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Other Comprehensive Income (Loss) [Member] | ASU 2016-01 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities before tax				(71,012)
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax				(46,157)
Cumulative Effect, Period of Adoption, Adjustment [Member] | Other Comprehensive Income (Loss) [Member] | ASU 2016-13 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax		0
Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] | ASU 2016-01 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities before tax				71,012
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax				$ 46,157
Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] | ASU 2016-13 [Member]
Recently Adopted/Issued Accounting Pronouncements [Abstract]
Cumulative-effect adjustment to reclassify unrealized gains on equity securities before tax		(15,545)
Cumulative-effect adjustment to reclassify unrealized gains on equity securities after tax		$ (12,281)

Investments, Available-for-sale

Investments, Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale Debt Securities [Abstract]
Fair value	$ 919,692	$ 795,538
Cost or amortized cost	894,468	783,047
Allowance for credit losses	(1,035)	0
Gross unrealized gains	30,997	16,043
Gross unrealized losses	(4,738)	(3,552)
Net unrealized gains (losses)	26,259	12,491
Agency Collateralized Mortgage Obligations [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	11,931	12,093
Cost or amortized cost	11,448	11,557
Allowance for credit losses	0
Gross unrealized gains	483	536
Gross unrealized losses	0	0
Net unrealized gains (losses)	483	536
Agency Mortgage-backed Securities [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	102,107	56,280
Cost or amortized cost	99,060	54,286
Allowance for credit losses	0
Gross unrealized gains	3,062	2,005
Gross unrealized losses	(15)	(11)
Net unrealized gains (losses)	3,047	1,994
Asset-backed Securities [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	107,696	106,397
Cost or amortized cost	108,686	107,028
Allowance for credit losses	0
Gross unrealized gains	596	499
Gross unrealized losses	(1,586)	(1,130)
Net unrealized gains (losses)	(990)	(631)
Bank Loans [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	11,361	14,568
Cost or amortized cost	11,590	14,932
Allowance for credit losses	0
Gross unrealized gains	128	106
Gross unrealized losses	(357)	(470)
Net unrealized gains (losses)	(229)	(364)
Certificates of Deposit [Member]
Available-for-sale Debt Securities [Abstract]
Fair value		2,835
Cost or amortized cost		2,835
Gross unrealized gains		0
Gross unrealized losses		0
Net unrealized gains (losses)		0
Collateralized Mortgage Obligations [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	5,118	5,616
Cost or amortized cost	5,061	5,123
Allowance for credit losses	0
Gross unrealized gains	151	493
Gross unrealized losses	(94)	0
Net unrealized gains (losses)	57	493
Corporate Securities [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	360,241	281,381
Cost or amortized cost	344,059	274,340
Allowance for credit losses	0
Gross unrealized gains	16,380	7,492
Gross unrealized losses	(198)	(451)
Net unrealized gains (losses)	16,182	7,041
Mortgage-backed Securities [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	38,056	47,463
Cost or amortized cost	40,675	46,685
Allowance for credit losses	(1,035)
Gross unrealized gains	659	1,047
Gross unrealized losses	(2,243)	(269)
Net unrealized gains (losses)	(1,584)	778
Municipal Obligations [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	45,143	36,286
Cost or amortized cost	43,353	35,749
Allowance for credit losses	0
Gross unrealized gains	1,820	684
Gross unrealized losses	(30)	(147)
Net unrealized gains (losses)	1,790	537
Non-U.S. Government Obligations [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	30,600	24,179
Cost or amortized cost	29,882	23,889
Allowance for credit losses	0
Gross unrealized gains	718	290
Gross unrealized losses	0	0
Net unrealized gains (losses)	718	290
U.S. Government Obligations [Member]
Available-for-sale Debt Securities [Abstract]
Fair value	207,439	208,440
Cost or amortized cost	200,654	206,623
Allowance for credit losses	0
Gross unrealized gains	7,000	2,891
Gross unrealized losses	(215)	(1,074)
Net unrealized gains (losses)	$ 6,785	$ 1,817

Investments, Fixed Income Secur

Investments, Fixed Income Securities in Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2020USD ($)Security	Dec. 31, 2019USD ($)Security
Fixed Income Securities, Unrealized Loss Position, Number of Securities [Abstract]
Number of securities, 12 months or less | Security	100	88
Number of securities, Greater than 12 months | Security	24	69
Number of securities, total | Security	124	157
Fixed Income Securities, Unrealized Loss Position, Fair Value [Abstract]
Fair value, 12 months or less	$ 120,630	$ 108,387
Fair value, Greater than 12 months	33,065	66,860
Fair value, total	153,695	175,247
Fixed Income Securities, Unrealized Loss Position, Gross Unrealized Loss [Abstract]
Gross unrealized loss, 12 months or less	(3,405)	(2,452)
Gross unrealized loss, Greater than 12 months	(1,333)	(1,100)
Gross unrealized loss, total	$ (4,738)	$ (3,552)

Investments, Fixed Income Inves

Investments, Fixed Income Investments by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
One year or less, Fair Value	$ 117,017
Excess of one year to five years, Fair Value	359,314
Excess of five years to ten years, Fair Value	161,700
Excess of ten years, Fair Value	21,871
Total contractual maturities, Fair Value	659,902
Asset-backed securities, Fair Value	259,790
Total, Fair Value	$ 919,692	$ 795,538
Percentage of Available for sale Securities, Debt Maturities, Fair Value [Abstract]
One year or less, Fair Value	12.70%
Excess of one year to five years, Fair Value	39.10%
Excess of five years to ten years, Fair Value	17.60%
Excess of ten years, Fair Value	2.40%
Total contractual maturities, Fair Value	71.80%
Asset-backed securities, Fair Value	28.20%
Total, Fair Value	100.00%
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
One year or less, Cost or Amortized Cost	$ 115,774
Excess of one year to five years, Cost or Amortized Cost	346,150
Excess of five years to ten years, Cost or Amortized Cost	151,446
Excess of ten years, Cost or Amortized Cost	22,264
Total contractual maturities, Cost or Amortized Cost	635,634
Asset-backed securities, Cost or Amortized Cost	258,834
Cost or amortized cost	$ 894,468	$ 783,047
Percentage of Available for sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
One year or less, Cost or Amortized Cost	12.90%
Excess of one year to five years, Cost or Amortized Cost	38.70%
Excess of five years to ten years, Cost or Amortized Cost	16.90%
Excess of ten years, Cost or Amortized Cost	2.60%
Total contractual maturities, Cost or Amortized Cost	71.10%
Asset-backed securities, Cost or Amortized Cost	28.90%
Cost or amortized cost	100.00%

Investments, Major Categories o

Investments, Major Categories of Investment Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investment Income, Net [Abstract]
Investment Income	$ 27,812	$ 28,916	$ 25,001
Investment expenses	(2,390)	(2,667)	(2,953)
Net investment income	25,422	26,249	22,048
Interest on Fixed Income Securities [Member]
Investment Income, Net [Abstract]
Investment Income	24,874	24,620	19,092
Dividends on Equity Securities [Member]
Investment Income, Net [Abstract]
Investment Income	1,868	2,320	4,380
Money Market Funds, Short term and Other [Member]
Investment Income, Net [Abstract]
Investment Income	$ 1,070	$ 1,976	$ 1,529

Investments, Gains (Losses) on

Investments, Gains (Losses) on Investments (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
Gains (Losses) on Investments [Abstract]
Impairment losses on investments										$ (2,861)	$ (497)	$ (19)
Change in value of limited partnership investments										(1,442)	1,644	(9,343)
Gains (losses) on equity securities [Abstract]
Realized gains (losses) on equity securities sold during the period	[1]									(8,058)	1,938	(3,072)
Unrealized gains (losses) on equity securities held at the end of the period										1,943	9,287	(9,697)
Total realized and unrealized gains (losses) on equity securities										(6,115)	11,225	(12,769)
Net realized and unrealized gains (losses) on investments		$ 7,761	$ 144	$ 10,615	$ (27,756)	$ 3,848	$ 125	$ 2,889	$ 6,027	(9,236)	12,889	(25,691)
Proceeds from sales of equity securities										51,713	21,621	149,195
Realized gains on equity securities												51,900
Recorded write down to earnings										1,826
Allowance for credit losses		$ 1,035								1,035
Fixed Income Securities [Member]
Gains (Losses) on Investments [Abstract]
Gross gains on available-for-sale investments during the period										11,125	11,009	10,807
Gross losses on available-for-sale investments during the period										$ (9,943)	$ (10,492)	$ (14,367)
[1]	During 2018, the Company sold $149,195 in equity securities, resulting in a gain on sale of $51,900.  The majority of these gains were included in unrealized gains within other comprehensive income (loss) at December 31, 2017 and, as a result of the adoption of ASU 2016-01, were reclassified to retained earnings as of January 1, 2018 and were therefore not recognized in the consolidated statements of operations for the year ended December 31, 2018.

Investments, Adjustments for Ot

Investments, Adjustments for Other-than-temporary Impairment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Adjustments for other-than-temporary impairment [Roll Forward]
Cumulative charges to income at beginning of year	$ 889	$ 930	$ 4,209
Writedowns based on objective and subjective criteria	1,826	497	19
Recovery of prior writedowns upon sale or disposal	(909)	(538)	(3,298)
Net pre-tax realized gain (loss)	(917)	41	3,279
Cumulative charges to income at end of year	$ 1,806	$ 889	$ 930

Investments, Limited Partnershi

Investments, Limited Partnerships and Investments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Investment	Dec. 31, 2019USD ($)
Limited Partners' Capital Account [Abstract]
Regulatory deposits with various insurance departments in United States and Canada, fair value	$ 122,896	$ 99,763
Time certificate of deposit included in short-term investments	$ 1,000
Percentage of fixed income securities invested in investment grade fixed income	93.00%
Number of fixed income investments issued with guarantees | Investment	0
Fixed income investment below investment grade	$ 63,660
Percentage of fixed income investment to total invested assets	6.10%
Net unrealized gain position of investments	$ 2,230
Limited Partnerships [Member]
Limited Partners' Capital Account [Abstract]
Commitment to make additional contributions to various limited partnerships	$ 350

Loss and Loss Expense Reserves,

Loss and Loss Expense Reserves, Activity in Reserves for Losses and Loss Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Activity in the reserve for losses and loss expenses [Roll Forward]
Reserves, gross of reinsurance recoverable, at the beginning of the year	$ 988,305	$ 865,339	$ 680,274
Reinsurance recoverable on unpaid losses at the beginning of the year	398,305	375,935	308,143
Reserves at the beginning of the year	590,000	489,404	372,131
Provision for losses and loss expenses [Abstract]
Claims occurring during the current year	319,269	349,018	329,078
Claims occurring during prior years	(311)	(550)	16,786
Total incurred losses and loss expenses	318,958	348,468	345,864
Loss and loss expense payments [Abstract]
Claims occurring during the current year	77,880	90,364	84,738
Claims occurring during prior years	165,777	157,508	143,853
Total paid	243,657	247,872	228,591
Reserves at the end of the year	665,301	590,000	489,404
Reinsurance recoverable on unpaid losses at the end of the year	424,368	398,305	375,935
Reserves, gross of reinsurance recoverable, at the end of the year	1,089,669	988,305	865,339
Salvage and Subrogation Recoveries [Abstract]
Estimated salvage and subrogation recoverable	4,000	4,000
Workers' Compensation [Member]
Provision for losses and loss expenses [Abstract]
Claims occurring during prior years	1,431	(2,733)	(9,601)
Commercial Auto Liability [Member]
Provision for losses and loss expenses [Abstract]
Claims occurring during prior years	10,717	8,893	32,342
Physical Damage [Member]
Provision for losses and loss expenses [Abstract]
Claims occurring during prior years	(1,684)	(4,561)	(1,066)
Professional Liability Assumed [Member]
Provision for losses and loss expenses [Abstract]
Claims occurring during prior years	189	259	2,343
Occupational Accident [Member]
Provision for losses and loss expenses [Abstract]
Claims occurring during prior years	(7,467)	688	(4,178)
Other Short-duration Contracts [Member]
Provision for losses and loss expenses [Abstract]
Claims occurring during prior years	$ (3,497)	$ (3,096)	$ (3,054)

Loss and Loss Expense Reserve_2

Loss and Loss Expense Reserves, Incurred Claims Development, Net of Reinsurance (Details) $ in Thousands		12 Months Ended
		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 ($)	Dec. 31, 2011USD ($)
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Liabilities for claims and claims adjustment expenses, net of reinsurance		$ 641,131		$ 567,630
Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		395,314
Total of incurred-but-not-reported liabilities plus expected development on reported claims		91,001
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		243,291
Outstanding liabilities prior to 2011, net of reinsurance		16,836
Liabilities for claims and claims adjustment expenses, net of reinsurance		168,859		154,409
Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		1,025,880
Total of incurred-but-not-reported liabilities plus expected development on reported claims		211,152
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		608,615
Outstanding liabilities prior to 2011, net of reinsurance		3,433
Liabilities for claims and claims adjustment expenses, net of reinsurance		420,698		355,148
Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		75,161
Total of incurred-but-not-reported liabilities plus expected development on reported claims		6,122
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		63,737
Outstanding liabilities prior to 2011, net of reinsurance		534
Liabilities for claims and claims adjustment expenses, net of reinsurance		11,958		16,079
Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		73,929
Total of incurred-but-not-reported liabilities plus expected development on reported claims		4,771
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		58,989
Outstanding liabilities prior to 2011, net of reinsurance		99
Liabilities for claims and claims adjustment expenses, net of reinsurance		15,039		19,840
Physical Damage [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance	[1]	160,495
Total of incurred-but-not-reported liabilities plus expected development on reported claims	[1]	$ 3,396
Short-duration insurance contract, claims settlement period		2 years
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance	[1]	$ 146,011
Outstanding liabilities prior to 2011, net of reinsurance	[1]	77
Liabilities for claims and claims adjustment expenses, net of reinsurance		14,561	[1]	11,676
Accident Year 2011 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		26,356		26,452	$ 26,631	$ 26,617	$ 27,293	$ 25,515	$ 26,767	$ 26,958	$ 26,628	$ 26,057
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 1,989
Number of reported claims per year | Claim		4,547
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 23,516		23,366	22,991	22,569	21,622	20,617	18,884	15,973	11,912	4,916
Accident Year 2011 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		38,773		37,795	37,852	36,076	37,122	35,805	36,894	31,633	43,832	46,829
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 21
Number of reported claims per year | Claim		2,902
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 37,267		37,263	36,400	35,561	34,009	33,255	30,795	23,615	11,350	1,809
Accident Year 2011 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		13,228		13,018	12,725	12,744	12,735	10,779	9,859	9,017	8,314	10,492
Total of incurred-but-not-reported liabilities plus expected development on reported claims		219
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		12,629		12,404	12,280	11,679	10,404	8,104	4,983	2,061	637	50
Accident Year 2011 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		6,275		6,287	6,263	6,264	6,297	6,151	6,283	6,485	6,937	6,249
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 2
Number of reported claims per year | Claim		472
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 6,267		6,246	6,232	6,219	6,278	6,020	6,050	6,003	4,861	$ 2,159
Accident Year 2012 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		26,397		25,508	26,775	27,020	25,616	24,485	24,887	25,544	23,965
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 2,327
Number of reported claims per year | Claim		4,484
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 21,850		21,636	21,157	20,276	18,946	17,415	14,834	11,004	4,597
Accident Year 2012 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		51,830		51,962	51,648	51,475	48,708	51,367	49,743	54,269	49,743
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 443
Number of reported claims per year | Claim		3,131
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 50,908		50,882	50,750	50,036	47,601	45,303	32,942	23,252	3,086
Accident Year 2012 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		16,439		16,013	14,949	16,555	14,605	10,157	5,569	9,276	10,041
Total of incurred-but-not-reported liabilities plus expected development on reported claims		489
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		14,403		13,706	13,091	11,239	8,355	5,077	2,388	992	103
Accident Year 2012 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		3,758		3,773	3,551	3,566	3,585	3,758	3,908	4,168	5,272
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 8
Number of reported claims per year | Claim		380
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 3,555		3,521	3,482	3,442	3,377	3,390	3,190	2,648	$ 1,082
Accident Year 2013 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		31,360		31,066	31,131	32,553	32,121	29,913	30,638	27,619
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 3,137
Number of reported claims per year | Claim		5,282
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 26,702		25,847	24,968	23,643	21,655	18,065	12,792	4,880
Accident Year 2013 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		51,293		51,598	48,857	46,690	36,371	37,701	39,143	53,817
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 270
Number of reported claims per year | Claim		3,753
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 49,879		49,522	46,084	44,865	34,481	25,270	15,772	5,167
Accident Year 2013 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		23,381		23,474	22,213	23,256	17,694	11,618	13,034	14,370
Total of incurred-but-not-reported liabilities plus expected development on reported claims		1,764
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		20,157		19,201	18,229	14,779	10,988	5,088	1,135	123
Accident Year 2013 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		4,082		4,082	4,107	4,166	4,390	4,403	5,044	6,410
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 0
Number of reported claims per year | Claim		337
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 4,082		4,082	4,107	4,110	4,108	3,768	3,565	$ 1,989
Accident Year 2014 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		31,551		31,579	31,031	33,427	34,009	36,968	36,768
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 3,772
Number of reported claims per year | Claim		5,413
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 25,507		24,714	23,968	22,387	19,075	13,665	5,328
Accident Year 2014 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		72,636		70,841	64,372	52,964	52,483	52,254	49,971
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 1,051
Number of reported claims per year | Claim		3,325
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 69,183		68,392	57,692	45,075	28,393	9,046	4,023
Accident Year 2014 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		10,619		10,721	12,749	9,837	7,259	8,825	12,675
Total of incurred-but-not-reported liabilities plus expected development on reported claims		1,256
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		8,890		7,732	6,627	3,999	2,241	761	723
Accident Year 2014 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		4,041		4,061	4,031	4,093	4,147	4,865	5,283
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 38
Number of reported claims per year | Claim		325
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 3,968		3,968	3,948	3,909	3,861	3,685	$ 2,000
Accident Year 2015 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		25,167		25,436	24,948	25,889	23,115	26,277
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 3,367
Number of reported claims per year | Claim		6,340
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 20,251		19,385	17,487	15,020	10,128	2,918
Accident Year 2015 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		77,225		75,503	71,088	64,323	70,174	61,420
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 1,736
Number of reported claims per year | Claim		3,198
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 74,276		71,697	63,133	49,267	27,582	10,923
Accident Year 2015 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		8,404		8,753	10,422	7,147	7,859	11,638
Total of incurred-but-not-reported liabilities plus expected development on reported claims		1,959
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		5,162		3,964	3,207	1,899	390	10
Accident Year 2015 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		3,698		3,832	3,846	3,715	3,539	3,897
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 111
Number of reported claims per year | Claim		275
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 3,285		3,224	2,988	2,670	1,934	$ 739
Accident Year 2016 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		29,785		30,060	29,317	29,757	35,240
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 3,693
Number of reported claims per year | Claim		6,087
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 23,113		21,304	18,461	13,377	5,784
Accident Year 2016 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		80,788		79,015	77,362	68,974	61,638
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 2,420
Number of reported claims per year | Claim		3,751
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 74,324		70,324	52,764	30,377	6,843
Accident Year 2016 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		3,090		2,993	1,522	2,482	6,368
Total of incurred-but-not-reported liabilities plus expected development on reported claims		435
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		2,496		2,254	99	5	0
Accident Year 2016 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		4,894		5,965	5,847	6,312	6,729
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 112
Number of reported claims per year | Claim		704
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 4,785		4,807	4,818	4,388	$ 1,596
Accident Year 2017 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		34,930		36,211	37,731	42,387
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 5,921
Number of reported claims per year | Claim		16,469
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 23,910		20,863	15,811	6,150
Accident Year 2017 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		97,663		99,287	103,611	103,126
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 12,197
Number of reported claims per year | Claim		5,403
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 73,496		58,173	46,529	11,415
Accident Year 2017 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		0		0	0	0
Total of incurred-but-not-reported liabilities plus expected development on reported claims		0
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		0		0	0	0
Accident Year 2017 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		11,031		12,976	13,334	17,041
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 111
Number of reported claims per year | Claim		1,040
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 9,645		9,126	7,756	$ 3,229
Accident Year 2018 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		62,451		61,530	62,973
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 13,632
Number of reported claims per year | Claim		14,295
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 36,794		27,862	10,987
Accident Year 2018 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		186,521		177,262	179,589
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 29,518
Number of reported claims per year | Claim		8,197
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 101,803		66,575	18,689
Accident Year 2018 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		0		0	0
Total of incurred-but-not-reported liabilities plus expected development on reported claims		0
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		0		0	0
Accident Year 2018 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		12,147		17,053	16,365
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 412
Number of reported claims per year | Claim		892
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 10,642		9,807	5,324
Accident Year 2018 [Member] | Physical Damage [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance	[1]	49,767		50,122	53,726
Total of incurred-but-not-reported liabilities plus expected development on reported claims	[1]	$ 22
Number of reported claims per year | Claim	[1]	11,151
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance	[1]	$ 49,638		49,685	41,631
Accident Year 2019 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		67,113		65,837
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 19,079
Number of reported claims per year | Claim		9,480
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 31,140		13,171
Accident Year 2019 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		195,273		198,022
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 53,842
Number of reported claims per year | Claim		8,313
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 64,294		19,311
Accident Year 2019 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		0		0
Total of incurred-but-not-reported liabilities plus expected development on reported claims		0
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		0		0
Accident Year 2019 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		11,134		10,498
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 1,469
Number of reported claims per year | Claim		882
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 7,782		4,007
Accident Year 2019 [Member] | Physical Damage [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance	[1]	54,126		55,354	0
Total of incurred-but-not-reported liabilities plus expected development on reported claims	[1]	$ 141
Number of reported claims per year | Claim	[1]	10,472
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance	[1]	$ 53,647		44,197	$ 0
Accident Year 2020 [Member] | Workers' Compensation [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		60,204
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 34,084
Number of reported claims per year | Claim		7,550
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 10,508
Accident Year 2020 [Member] | Commercial Liability [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		173,878
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 109,654
Number of reported claims per year | Claim		4,410
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 13,185
Accident Year 2020 [Member] | Professional Liability Reinsurance Assumed [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		0
Total of incurred-but-not-reported liabilities plus expected development on reported claims		0
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		0
Accident Year 2020 [Member] | Occupational Accident [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance		12,869
Total of incurred-but-not-reported liabilities plus expected development on reported claims		$ 2,508
Number of reported claims per year | Claim		772
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance		$ 4,978
Accident Year 2020 [Member] | Physical Damage [Member]
Incurred Claims Development, Net of Reinsurance [Abstract]
Incurred claims and allocated claim adjustment expenses, net of reinsurance	[1]	56,602		0
Total of incurred-but-not-reported liabilities plus expected development on reported claims	[1]	$ 3,233
Number of reported claims per year | Claim	[1]	9,130
Cumulative Paid Claims Development, Net of Reinsurance [Abstract]
Cumulative paid claims and allocated claim adjustment expense, net of reinsurance	[1]	$ 42,726		$ 0
[1]	The majority of physical damage claims settle within a two-year period. The triangles above have been abbreviated to reflect the short-tail nature of this business.

Loss and Loss Expense Reserve_3

Loss and Loss Expense Reserves, Reconciliation of Net Incurred and Paid Claims Development (Details) - USD ($) $ in Thousands	Dec. 31, 2020		Dec. 31, 2019
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	$ 641,131		$ 567,630
Reinsurance recoverable on unpaid claims [Abstract]
Reinsurance recoverable on unpaid losses at the end of the year	424,368		398,305
Unallocated claims adjustment expenses	24,170		22,370
Total gross liability for unpaid claims and claims adjustment expense	1,089,669		988,305
Workers' Compensation [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	168,859		154,409
Reinsurance recoverable on unpaid claims [Abstract]
Reinsurance recoverable on unpaid losses at the end of the year	211,421		182,908
Occupational Accident [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	15,039		19,840
Reinsurance recoverable on unpaid claims [Abstract]
Reinsurance recoverable on unpaid losses at the end of the year	500		1,979
Physical Damage [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	14,561	[1]	11,676
Reinsurance recoverable on unpaid claims [Abstract]
Reinsurance recoverable on unpaid losses at the end of the year	1,054		655
Commercial Liability [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	420,698		355,148
Reinsurance recoverable on unpaid claims [Abstract]
Reinsurance recoverable on unpaid losses at the end of the year	209,126		209,152
Professional Liability Assumed [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	11,958		16,079
Other Short-duration Insurance Lines [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	10,016		10,478
Reinsurance recoverable on unpaid claims [Abstract]
Reinsurance recoverable on unpaid losses at the end of the year	$ 2,267		$ 3,611
[1]	The majority of physical damage claims settle within a two-year period. The triangles above have been abbreviated to reflect the short-tail nature of this business.

Loss and Loss Expense Reserve_4

Loss and Loss Expense Reserves, Supplementary Information about Average Historical Claims Duration (Details)	12 Months Ended
	Dec. 31, 2020qtryr
Minimum [Member]
Reserve Methodologies for Incurred But Not Reported Losses [Abstract]
Number of running accident quarters used | qtr	12
Number of accident years included in loss development triangles | yr	15
Workers' Compensation [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Abstract]
Year One	16.90%
Year Two	26.50%
Year Three	16.10%
Year Four	10.10%
Year Five	6.20%
Year Six	3.80%
Year Seven	3.10%
Year Eight	2.00%
Year Nine	1.10%
Year Ten	0.60%
Occupational Accident [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Abstract]
Year One	36.20%
Year Two	40.70%
Year Three	11.20%
Year Four	4.10%
Year Five	1.00%
Year Six	1.60%
Year Seven	(0.10%)
Year Eight	0.40%
Year Nine	0.60%
Year Ten	0.30%
Physical Damage [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Abstract]
Year One	81.60%
Year Two	16.30%
Year Three	(0.40%)
Commercial Liability [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Abstract]
Year One	8.80%
Year Two	25.20%
Year Three	22.80%
Year Four	19.80%
Year Five	8.90%
Year Six	5.40%
Year Seven	3.30%
Year Eight	0.80%
Year Nine	1.10%
Year Ten	0.00%
Professional Liability Assumed [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance [Abstract]
Year One	1.40%
Year Two	3.20%
Year Three	11.80%
Year Four	27.60%
Year Five	16.90%
Year Six	14.90%
Year Seven	9.00%
Year Eight	4.10%
Year Nine	2.60%
Year Ten	1.70%

Reinsurance (Details)

Reinsurance (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
Premiums Written [Abstract]
Direct										$ 546,708	$ 574,181	$ 581,070
Ceded on direct										(106,561)	(122,676)	(138,102)
Net direct										440,147	451,505	442,968
Assumed										853	737	1,430
Ceded on assumed										0	0	0
Net assumed										853	737	1,430
Net										441,000	452,242	444,398
Premiums Earned [Abstract]
Direct										557,795	570,959	562,364
Ceded on direct	[1]									(113,125)	(124,446)	(131,080)
Net direct										444,670	446,513	431,284
Assumed										845	775	1,596
Ceded on assumed										0	0	0
Net assumed										845	775	1,596
Net		$ 120,273	$ 117,853	$ 97,730	$ 109,659	$ 111,357	$ 110,288	$ 115,631	$ 110,012	445,515	447,288	432,880
Net losses and loss expenses incurred reduced by ceded reinsurance recoveries										105,895	121,927	148,173
Net losses and loss expenses incurred from reinsurance assumed from non-affiliates										432	193	$ 1,300
Components of reinsurance recoverable [Abstract]
Case unpaid losses, net of allowance for reinsurance		166,171				166,675				166,171	166,675
Incurred but not reported unpaid losses and loss expenses		257,225				230,459				257,225	230,459
Paid losses and loss expenses		24,133				20,334				24,133	20,334
Unearned premiums		8,035				14,599				8,035	14,599
Reinsurance recoverable		$ 455,564				$ 432,067				$ 455,564	$ 432,067
[1]	Included in Ceded to Other Companies is $0 for each of 2020, 2019 and 2018 relating to retrocessions associated with premiums assumed from other companies.  Percentage of Amount Assumed to Net above considers the impact of this retrocession.

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
Corporate income tax rate	21.00%			35.00%
Deferred tax liabilities [Abstract]
Unrealized gain on fixed income and equity security investments	$ 8,159	$ 5,327
Deferred acquisition costs	2,538	2,821
Loss and loss expense reserves	2,222	2,701
Limited partnership investments	0	2,587
Accelerated depreciation	669	687
Other	1,495	1,361
Total deferred tax liabilities	15,083	15,484
Deferred tax assets [Abstract]
Loss and loss expense reserves	12,923	11,460
Limited partnership investments	822	0
Unearned premiums discount	2,339	2,529
Impairment related investment declines	435	39
Deferred compensation	1,999	1,181
Deferred ceding commission	492	1,037
Allowance for credit losses	3,580	0
Other	1,473	1,273
Total deferred tax assets	24,063	17,519
Net deferred tax assets	8,980	2,035
Difference between federal income tax expense (benefit) computed at statutory rate [Abstract]
Statutory federal income rate applied to pre-tax income (loss)	1,336	1,821	$ (9,213)
Tax effect of (deduction) [Abstract]
Tax-exempt investment income	(239)	(402)	(253)
Valuation allowance	1,264	0	0
Other	(461)	(93)	(331)
Federal income tax expense (benefit)	1,900	1,326	(9,797)
Tax expense (benefit) on pre-tax income (loss) [Abstract]
Current	7,144	1,377	8,997
Deferred	(5,244)	(51)	(18,794)
Federal income tax expense (benefit)	1,900	1,326	(9,797)
Provisions for deferred federal income taxes [Abstract]
Limited partnerships	(3,409)	1,143	(2,383)
Discounts of loss and loss expense reserves	(1,944)	(2,269)	(2,704)
Reserves - salvage and subrogation and other	1	(74)	427
Unearned premium discount	190	(208)	(484)
Deferred compensation	(818)	(600)	305
Impairment related investment declines	(1,400)	(411)	695
Deferred acquisitions costs and ceding commission	262	405	201
Unrealized gains / losses	(59)	1,837	(13,876)
Valuation allowance	1,264	0	0
Other	669	126	(975)
Provision for deferred federal income taxes	(5,244)	(51)	(18,794)
Deferred tax assets, valuation allowance	0	0
Valuation allowance recorded in statement of operations	1,264
Uncertain tax positions	0	0
Accrued interest	$ 0	$ 0	$ 0

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019	Dec. 31, 2018
Increase (Decrease) in Common Stock Outstanding and Additional Paid-In Capital [Roll Forward]
Dividends paid to shareholders	$ 5,692		$ 5,857	$ 16,835
Cash dividends paid (in dollars per share)	$ 0.40		$ 0.40	$ 1.12
Stock repurchase program, shares authorized (in shares)	2,464,209
Repurchase of common shares	$ 1,782		$ 11,501	$ 4,596
Investments [Abstract]
Total unrealized gain before federal income tax expense (benefit)	26,259		12,491
Deferred tax benefit (liability)	(4,255)	[1]	(2,628)
Net unrealized gains on investments	22,004		9,863
Foreign exchange adjustment [Abstract]
Total unrealized losses	(310)		(625)
Deferred tax benefit	65		131
Net unrealized losses on foreign exchange adjustment	(245)		(494)
Accumulated other comprehensive income	21,759		9,369
Investments [Abstract]
Pre-tax holding gains (losses) on fixed income securities arising during period	10,501		19,182	(12,253)
Less: applicable federal income tax expense (benefit)	941	[1]	4,028	(2,573)
Net unrealized gains (losses) on investments	9,560		15,154	(9,680)
Pre-tax gains (losses) on fixed income securities included in net income (loss) during period	(3,267)	[1]	(1,161)	(3,560)
Less: applicable federal income tax expense (benefit)	(686)		(244)	(748)
Other comprehensive income (loss), reclassification adjustment for sale of securities included in net income, net of tax	(2,581)		(917)	(2,812)
Change in unrealized gains (losses) on investments	12,141		16,071	(6,868)
Valuation allowance	$ 1,264		$ 0	$ 0
Class A [Member]
Increase (Decrease) in Common Stock Outstanding and Additional Paid-In Capital [Roll Forward]
Stated value of common stock (in dollars per share)	$ 0.04
Class B [Member]
Increase (Decrease) in Common Stock Outstanding and Additional Paid-In Capital [Roll Forward]
Stated value of common stock (in dollars per share)	$ 0.04
Repurchase of common stock (in shares)	126,764
Average share price (in dollars per share)	$ 14.07
[1]	Includes the $1,264 valuation allowance benefit recorded in other comprehensive income.  See Note E - Income Taxes for additional information.

Other Operating Expenses (Detai

Other Operating Expenses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Operating Expenses [Abstract]
Amortization of gross deferred policy acquisition costs		$ 79,947	$ 81,734	$ 78,105
Other underwriting expenses		66,005	59,975	46,638
Reinsurance ceded credits		(24,764)	(25,932)	(23,124)
Total underwriting expenses		121,188	115,777	101,619
Operating expenses of non-insurance companies		22,240	22,679	32,406
Goodwill impairment charge	$ 3,152	0	0	3,152
Total other operating expenses		$ 143,428	$ 138,456	$ 137,177

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
401(k) Employee Savings and Profit Sharing Plan [Member]
Defined Contribution Plan [Abstract]
Company's contribution to the plan	$ 3,274	$ 3,213	$ 3,486

Stock Based Compensation (Detai

Stock Based Compensation (Details) $ / shares in Units, $ in Thousands	Jul. 06, 2020shares	Nov. 05, 2019USD ($)Manager	May 22, 2019shares	Nov. 13, 2018shares	Dec. 31, 2020USD ($)$ / sharesshares	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)shares
Share-based Compensation [Abstract]
Shares distribution period from grant date					1 year
Summary of stock Issuances [Abstract]
Stock based compensation expense | $					$ 1,789	$ 1,529	$ 475
2/9/2018 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					408
Vesting date					May 9, 2018
Service period, beginning					Feb. 9, 2018
Service period, ending					Jun. 30, 2018
Grant date fair value per share (in dollars per share) | $ / shares					$ 24.20
5/8/2018 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					19,085
Vesting date					May 8, 2019
Service period, beginning					Jul. 1, 2018
Service period, ending					Jun. 30, 2019
Grant date fair value per share (in dollars per share) | $ / shares					$ 23.05
5/7/2019 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					29,536
Vesting date					May 7, 2020
Service period, beginning					Jul. 1, 2019
Service period, ending					Jun. 30, 2020
Grant date fair value per share (in dollars per share) | $ / shares					$ 16.25
5/17/2019 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					3,591
Vesting date					May 7, 2020
Service period, beginning					May 17, 2019
Service period, ending					Jun. 30, 2020
Grant date fair value per share (in dollars per share) | $ / shares					$ 16.25
5/22/2019 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					3,541
Vesting date					May 7, 2020
Service period, beginning					May 22, 2019
Service period, ending					Jun. 30, 2020
Grant date fair value per share (in dollars per share) | $ / shares					$ 16.25
5/5/2020 [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					42,220
Vesting date					May 5, 2021
Service period, beginning					Jul. 1, 2020
Service period, ending					Jun. 30, 2021
Grant date fair value per share (in dollars per share) | $ / shares					$ 14.21
Director [Member]
Summary of stock Issuances [Abstract]
Compensation cost charged against income | $					$ 598	$ 518	$ 464
Restricted [Member] | John D. Nichols, Jr. [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)				85,000
Stock based compensation expense | $					193
Restricted [Member] | John D. Nichols, Jr. [Member] | Tranche One [Member]
Summary of stock Issuances [Abstract]
Number of shares vested and expected to vest (in shares)				42,500
Restricted [Member] | John D. Nichols, Jr. [Member] | Tranche Two [Member]
Summary of stock Issuances [Abstract]
Number of shares vested and expected to vest (in shares)				21,250
Restricted [Member] | John D. Nichols, Jr. [Member] | Tranche Three [Member]
Summary of stock Issuances [Abstract]
Number of shares vested and expected to vest (in shares)				21,250
Restricted [Member] | Edgecliffe-Johnson Stock Grant [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)			70,000
Stock based compensation expense | $					240
Restricted [Member] | Edgecliffe-Johnson Stock Grant [Member] | Tranche One [Member]
Summary of stock Issuances [Abstract]
Number of shares vested and expected to vest (in shares)			35,000
Restricted [Member] | Edgecliffe-Johnson Stock Grant [Member] | Tranche Two [Member]
Summary of stock Issuances [Abstract]
Number of shares vested and expected to vest (in shares)			21,000
Restricted [Member] | Edgecliffe-Johnson Stock Grant [Member] | Tranche Three [Member]
Summary of stock Issuances [Abstract]
Number of shares vested and expected to vest (in shares)			14,000
Restricted [Member] | Senior Management [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)	101,400
Stock based compensation expense | $					352
Shares granted in period | $		$ 1,100
Number of members awarded equity compensation | Manager		7
Restricted [Member] | Senior Management [Member] | 7/6/2020 [Member]
Summary of stock Issuances [Abstract]
Stock based compensation expense | $					$ 221
2018 LTIP Awards [Member] | Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)							0
2018 VCIP Awards [Member] | Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Number of shares issued (in shares)					0
Performance period					3 years
2019 LTIP Awards [Member] | Performance Based Equity Award [Member]
Summary of stock Issuances [Abstract]
Vesting period					3 years
Stock based compensation expense | $					$ 110
Annual vesting percentage of shares in year one					33.30%
Annual vesting percentage of shares in year two					33.30%
Annual vesting percentage of shares in year three					33.30%

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2020USD ($)Segment	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Segment Information [Abstract]
Number of reportable segments | Segment									1
Revenues [Abstract]
Net premiums earned	$ 120,273	$ 117,853	$ 97,730	$ 109,659	$ 111,357	$ 110,288	$ 115,631	$ 110,012	$ 445,515	$ 447,288	$ 432,880
Net investment income	6,321	5,486	6,379	7,236	6,815	6,703	6,500	6,231	25,422	26,249	22,048
Net realized and unrealized gains (losses) on investments	$ 7,761	$ 144	$ 10,615	$ (27,756)	$ 3,848	$ 125	$ 2,889	$ 6,027	(9,236)	12,889	(25,691)
Commissions and other income									7,048	9,171	9,932
Total revenues									468,749	495,597	439,169
Property and Casualty Insurance [Member]
Revenues [Abstract]
Net premiums earned									445,515	447,288	432,880
Net investment income									25,422	26,249	22,048
Net realized and unrealized gains (losses) on investments									(9,236)	12,889	(25,691)
Commissions and other income									7,048	9,171	9,932
Total revenues									$ 468,749	$ 495,597	$ 439,169

Earnings (Loss) Per Share (Deta

Earnings (Loss) Per Share (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of the denominators used in the calculation of basic and diluted earnings (loss) per share [Abstract]
Average shares outstanding for basic earnings (loss) per share (in shares)	14,140,178	14,520,815	14,964,812
Dilutive effect of share equivalents (in shares)	129,806	99,118	0
Diluted (in shares)	14,269,984	14,619,933	14,964,812

Concentrations of Credit Risk (

Concentrations of Credit Risk (Details) $ in Thousands	Dec. 31, 2020USD ($)
Concentrations of Credit Risk [Abstract]
Collateral held that is equal to the ultimate losses that would be paid or due in the event of insured's default	100.00%
First largest estimated amounts due from individual reinsurers	$ 55,097
Second largest estimated amounts due from individual reinsurers	$ 46,488

Acquisition and Related Goodw_2

Acquisition and Related Goodwill and Intangibles (Details) - USD ($) $ in Thousands	Oct. 31, 2008	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Combination [Abstract]
Goodwill impairment loss		$ 3,152	$ 0	$ 0	$ 3,152
Commercial Lines Specialty Insurance Agency [Member]
Business Combination [Abstract]
Cash purchase price	$ 3,500
Recorded goodwill	3,152
Intangible assets acquired	$ 179
Accumulated amortization on intangible assets			$ 179	$ 179
Goodwill impairment loss		$ 3,152

Fair Value, Assets Measured at

Fair Value, Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fixed income securities [Abstract]
Total, Fair Value	$ 919,692	$ 795,538
Equity securities [Abstract]
Total equity securities	58,169	76,812
Transfers Between Levels [Abstract]
Transfers of assets from Level 1 to Level 2	0	0
Transfers of assets from Level 2 to Level 1	0	0
Recurring [Member]
Fixed income securities [Abstract]
Agency collateralized mortgage obligations	11,931	12,093
Agency mortgage-backed securities	102,107	56,280
Asset-backed securities	107,696	106,397
Bank loans	11,361	14,568
Certificates of deposit		2,835
Collateralized mortgage obligations	5,118	5,616
Corporate securities	352,837	276,087
Options embedded in convertible securities	7,404	5,294
Mortgage-backed securities	38,056	47,463
Municipal obligations	45,143	36,286
Non-U.S. government obligations	30,600	24,179
U.S. government obligations	207,439	208,440
Total, Fair Value	919,692	795,538
Equity securities [Abstract]
Consumer	11,598	16,707
Energy	1,227	3,074
Financial	29,064	31,577
Industrial	5,180	4,927
Technology	2,851	2,817
Funds (e.g., mutual funds, closed end funds, ETFs)		9,460
Other	8,249	8,250
Total equity securities	58,169	76,812
Short-term investments	1,000	1,000
Cash equivalents	47,026	59,780
Total	1,025,887	933,130
Recurring [Member] | Level 1 [Member]
Fixed income securities [Abstract]
Agency collateralized mortgage obligations	0	0
Agency mortgage-backed securities	0	0
Asset-backed securities	0	0
Bank loans	0	0
Certificates of deposit		2,835
Collateralized mortgage obligations	0	0
Corporate securities	0	0
Options embedded in convertible securities	0	0
Mortgage-backed securities	0	0
Municipal obligations	0	0
Non-U.S. government obligations	0	0
U.S. government obligations	0	0
Total, Fair Value	0	2,835
Equity securities [Abstract]
Consumer	11,598	16,707
Energy	1,227	3,074
Financial	29,064	31,577
Industrial	5,180	4,927
Technology	2,851	2,817
Funds (e.g., mutual funds, closed end funds, ETFs)		9,460
Other	8,249	8,250
Total equity securities	58,169	76,812
Short-term investments	1,000	1,000
Cash equivalents	0	0
Total	59,169	80,647
Recurring [Member] | Level 2 [Member]
Fixed income securities [Abstract]
Agency collateralized mortgage obligations	11,931	12,093
Agency mortgage-backed securities	102,107	56,280
Asset-backed securities	107,696	106,397
Bank loans	11,361	14,568
Certificates of deposit		0
Collateralized mortgage obligations	5,118	5,616
Corporate securities	352,837	276,087
Options embedded in convertible securities	7,404	5,294
Mortgage-backed securities	38,056	47,463
Municipal obligations	45,143	36,286
Non-U.S. government obligations	30,600	24,179
U.S. government obligations	207,439	208,440
Total, Fair Value	919,692	792,703
Equity securities [Abstract]
Consumer	0	0
Energy	0	0
Financial	0	0
Industrial	0	0
Technology	0	0
Funds (e.g., mutual funds, closed end funds, ETFs)		0
Other	0	0
Total equity securities	0	0
Short-term investments	0	0
Cash equivalents	47,026	59,780
Total	966,718	852,483
Recurring [Member] | Level 3 [Member]
Fixed income securities [Abstract]
Agency collateralized mortgage obligations	0	0
Agency mortgage-backed securities	0	0
Asset-backed securities	0	0
Bank loans	0	0
Certificates of deposit		0
Collateralized mortgage obligations	0	0
Corporate securities	0	0
Options embedded in convertible securities	0	0
Mortgage-backed securities	0	0
Municipal obligations	0	0
Non-U.S. government obligations	0	0
U.S. government obligations	0	0
Total, Fair Value	0	0
Equity securities [Abstract]
Consumer	0	0
Energy	0	0
Financial	0	0
Industrial	0	0
Technology	0	0
Funds (e.g., mutual funds, closed end funds, ETFs)		0
Other	0	0
Total equity securities	0	0
Short-term investments	0	0
Cash equivalents	0	0
Total	$ 0	$ 0

Fair Value, Carrying Value and

Fair Value, Carrying Value and Fair Value by Level of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets [Abstract]
Limited partnerships	$ 7,214	$ 23,292
Carrying Value [Member]
Assets [Abstract]
Limited partnerships	7,214	23,292
Commercial mortgage loans	10,602	11,782
Liabilities [Abstract]
Short-term borrowings	20,000	20,000
Fair Value [Member]
Assets [Abstract]
Limited partnerships	7,214	23,292
Commercial mortgage loans	11,425	12,068
Liabilities [Abstract]
Short-term borrowings	20,000	20,000
Fair Value [Member] | Level 1 [Member]
Assets [Abstract]
Limited partnerships	0	0
Commercial mortgage loans	0	0
Liabilities [Abstract]
Short-term borrowings	0	0
Fair Value [Member] | Level 2 [Member]
Assets [Abstract]
Limited partnerships	0	0
Commercial mortgage loans	0	0
Liabilities [Abstract]
Short-term borrowings	20,000	20,000
Fair Value [Member] | Level 3 [Member]
Assets [Abstract]
Limited partnerships	7,214	23,292
Commercial mortgage loans	11,425	12,068
Liabilities [Abstract]
Short-term borrowings	$ 0	$ 0

Quarterly Results of Operatio_3

Quarterly Results of Operations (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 Results of Operations (Unaudited) [Abstract]
Net premiums earned	$ 120,273	$ 117,853	$ 97,730	$ 109,659	$ 111,357	$ 110,288	$ 115,631	$ 110,012	$ 445,515	$ 447,288	$ 432,880
Net investment income	6,321	5,486	6,379	7,236	6,815	6,703	6,500	6,231	25,422	26,249	22,048
Net realized and unrealized gains (losses) on investments	7,761	144	10,615	(27,756)	3,848	125	2,889	6,027	(9,236)	12,889	(25,691)
Losses and loss expenses incurred	84,246	84,673	68,208	81,831	86,132	84,781	90,433	87,122	318,958	348,468	345,864
Net income (loss)	$ 11,971	$ 3,281	$ 11,367	$ (22,156)	$ 3,771	$ (707)	$ 1,535	$ 2,748	$ 4,463	$ 7,347	$ (34,075)
Net income (loss) per diluted share (in dollars per share)	$ 0.84	$ 0.23	$ 0.80	$ (1.56)	$ 0.26	$ (0.05)	$ 0.11	$ 0.18	$ 0.31	$ 0.50	$ (2.28)

Statutory (Details)

Statutory (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statutory [Abstract]
Net income of the insurance subsidiaries in accordance with statutory accounting practices	$ 3,881	$ 25,302	$ 36,236
Consolidated statutory capital and surplus for subsidiaries	347,489	$ 371,793
Amount of statutory surplus transferred by dividend or loan to the parent company	50,584
Minimum statutory surplus necessary for the insurance subsidiaries to satisfy statutory risk based capital requirements	136,544
Consolidated statutory capital and surplus exceeded requirement	$ 210,946

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Lease expense	$ 135	$ 302	$ 204
Future lease payments for operating leases with initial or remaining noncancelable term of one year or more [Abstract]
2021	103
2022	18
2023	0
2024 and thereafter	0
Total minimum payments required	121
Right-of-use asset	$ 120
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssets
Lease liability	$ 120
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndOtherAccruedLiabilities

Debt (Details)

Debt (Details) - Revolving Credit Facility [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Covenant	Aug. 09, 2018USD ($)
Credit Agreement [Abstract]
Maximum credit limit		$ 40,000
Additional incremental loans limit		$ 35,000
Expiration date	Aug. 9, 2022
Optional period of fixed interest	1 year
Outstanding drawings	$ 20,000
Effective interest rate	1.25%
Amount remaining under credit facility	$ 20,000
Number of financial covenants | Covenant	2
Net worth and maximum consolidated debt to equity ratio	0.35

Related Parties (Details)

Related Parties (Details) - Investment Firm Services [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Director	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Related Party [Abstract]
Management fees and commissions	$ 110	$ 145	$ 103
Director [Member]
Related Party [Abstract]
Number of related parties | Director	1
Market value of equity and fixed maturity securities portfolio	$ 7,796

Litigation, Commitments and C_2

Litigation, Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Loss Contingency [Abstract]
Estimated recoverable amount	$ 455,564		$ 455,564	$ 455,564	$ 432,067
Allowance for credit losses, net of tax	1,035		1,035	1,035
ASU 2016-13 [Member]
Loss Contingency [Abstract]
Allowance for credit losses, before tax	16,500		16,500	16,500	15,000
Allowance for credit losses, net of tax	13,035		$ 13,035	13,035	11,850
Additional allowance for expected credit losses, gross	$ 0	$ 1,500
Additional allowance for expected credit losses, net of tax		$ 1,185
Charge incurred to operations, gross					30,500
Charge incurred to operations, net of tax					$ 24,095
Personnel Staffing Group d/b/a MVP Staffing [Member]
Loss Contingency [Abstract]
Per claim deductible amount				500
Damages sought				$ 0
Percentage of required collateral	110.00%		110.00%	110.00%
Deductible receivables	$ 21,780		$ 21,780	$ 21,780
Average monthly deductible invoices			740
Estimated recoverable amount	47,000		47,000	47,000
Personnel Staffing Group d/b/a MVP Staffing [Member] | Minimum [Member]
Loss Contingency [Abstract]
Loss fund	$ 4,000		$ 4,000	$ 4,000

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 22, 2021	Sep. 30, 2021	Feb. 14, 2021
Progressive [Member] | Forecast [Member]
Merger Agreement [Abstract]
Share price (in dollars per share)		$ 23.30
Total transaction value		$ 338
Subsequent Event [Member]
Voting and Support Agreement [Abstract]
Dividend payable, date declared	Feb. 22, 2021
Dividend payable, date to be paid	Mar. 10, 2021
Dividend payable, date of record	Mar. 5, 2021
Subsequent Event [Member] | Progressive [Member] | Maximum [Member]
Voting and Support Agreement [Abstract]
Dividend payable (in dollars per share)			$ 0.10
Subsequent Event [Member] | Class A [Member]
Voting and Support Agreement [Abstract]
Dividend payable (in dollars per share)	$ 0.10
Subsequent Event [Member] | Class A [Member] | Minimum [Member]
Voting and Support Agreement [Abstract]
Percentage of outstanding common stock for voting			35.00%
Subsequent Event [Member] | Class B [Member]
Voting and Support Agreement [Abstract]
Dividend payable (in dollars per share)	$ 0.10

Schedule I - Summary of Inves_2

Schedule I - Summary of Investments Other Than Investments in Related Parties (Details) $ in Thousands	Dec. 31, 2020USD ($)
Summary of Investments, Other than Investments in Related Parties [Abstract]
Investments classified as cash and cash equivalents	$ 47,026
Total Investments [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	954,507
Fair value	990,286
Amount at which shown in the consolidated balance sheet	989,463	[1]
Fixed Income Securities [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	894,468
Fair value	919,692
Amount at which shown in the consolidated balance sheet	919,692	[1]
Equity Securities [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	48,437
Fair value	58,169
Amount at which shown in the consolidated balance sheet	58,169	[1]
Bonds [Member] | Agency Collateralized Mortgage Obligations [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	11,448
Fair value	11,931
Amount at which shown in the consolidated balance sheet	11,931	[1]
Bonds [Member] | Agency Mortgage-backed Securities [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	99,060
Fair value	102,107
Amount at which shown in the consolidated balance sheet	102,107	[1]
Bonds [Member] | Asset-backed Securities [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	108,686
Fair value	107,696
Amount at which shown in the consolidated balance sheet	107,696	[1]
Bonds [Member] | Bank Loans [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	11,590
Fair value	11,361
Amount at which shown in the consolidated balance sheet	11,361	[1]
Bonds [Member] | Collateralized Mortgage Obligations [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	5,061
Fair value	5,118
Amount at which shown in the consolidated balance sheet	5,118	[1]
Bonds [Member] | Corporate Securities [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	344,059
Fair value	360,241
Amount at which shown in the consolidated balance sheet	360,241	[1]
Bonds [Member] | Mortgage-backed Securities [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	40,675
Fair value	38,056
Amount at which shown in the consolidated balance sheet	38,056	[1]
Bonds [Member] | Municipal Obligations [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	43,353
Fair value	45,143
Amount at which shown in the consolidated balance sheet	45,143	[1]
Bonds [Member] | Non-U.S. Government Obligations [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	29,882
Fair value	30,600
Amount at which shown in the consolidated balance sheet	30,600	[1]
Bonds [Member] | U.S. Government Obligations [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	200,654
Fair value	207,439
Amount at which shown in the consolidated balance sheet	207,439	[1]
Common Stocks [Member] | Consumer [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	9,619
Fair value	11,598
Amount at which shown in the consolidated balance sheet	11,598	[1]
Common Stocks [Member] | Energy [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	2,046
Fair value	1,227
Amount at which shown in the consolidated balance sheet	1,227	[1]
Common Stocks [Member] | Financial [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	24,007
Fair value	29,064
Amount at which shown in the consolidated balance sheet	29,064	[1]
Common Stocks [Member] | Industrial [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	4,066
Fair value	5,180
Amount at which shown in the consolidated balance sheet	5,180	[1]
Common Stocks [Member] | Technology [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	1,749
Fair value	2,851
Amount at which shown in the consolidated balance sheet	2,851	[1]
Common Stocks [Member] | Other [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	6,950
Fair value	8,249
Amount at which shown in the consolidated balance sheet	8,249	[1]
Commercial Mortgage Loans [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	10,602
Fair value	11,425
Amount at which shown in the consolidated balance sheet	10,602	[1]
Total Short-term and Other [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	1,000
Fair value	1,000
Amount at which shown in the consolidated balance sheet	1,000	[1]
Short-term [Member] | Certificates of Deposit [Member]
Summary of Investments, Other than Investments in Related Parties [Abstract]
Cost	1,000
Fair value	1,000
Amount at which shown in the consolidated balance sheet	$ 1,000	[1]
[1]	Amounts presented above do not include investments of $47,026 classified as cash and cash equivalents in the consolidated balance sheet.

Schedule II - Condensed Finan_2

Schedule II - Condensed Financial Information of Registrant, Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments other than subsidiaries [Abstract]
Fixed income securities	$ 919,692	$ 795,538
Limited partnerships	7,214	23,292
Total Investments	996,677	908,424
Cash and cash equivalents	58,301	67,851
OtherAssets	25,805	24,566
Total Assets	1,722,827	1,634,360
Liabilities [Abstract]
Short-term borrowings	20,000	20,000
Total Liabilities	1,359,745	1,270,044
Shareholders' equity [Abstract]
Additional paid-in capital	54,571	53,349
Accumulated other comprehensive income	21,759	9,369
Retained earnings	286,143	300,988
Total Shareholders' Equity	363,082	364,316	$ 356,082	$ 418,811
Total Liabilities and Shareholders' Equity	1,722,827	1,634,360
Class A [Member]
Shareholders' equity [Abstract]
Common stock	111	111
Class B [Member]
Shareholders' equity [Abstract]
Common stock	498	499
Protective Insurance Corporation [Member]
Assets [Abstract]
Investment in subsidiaries	389,757	398,725
Due from affiliates	7,877	1,579
Investments other than subsidiaries [Abstract]
Fixed income securities	23,379	23,979
Limited partnerships	206	206
Total Investments	23,585	24,185
Cash and cash equivalents	12,917	7,059	$ 15,185	$ 26,496
Accounts receivable	7,059	5,606
OtherAssets	14,316	22,153
Total Assets	455,511	459,307
Liabilities [Abstract]
Premiums payable	16,866	20,238
Deposits from insureds	44,268	42,067
Short-term borrowings	20,000	20,000
Other liabilities	11,295	12,686
Total Liabilities	92,429	94,991
Shareholders' equity [Abstract]
Additional paid-in capital	54,571	53,349
Accumulated other comprehensive income	21,759	9,369
Retained earnings	286,143	300,988
Total Shareholders' Equity	363,082	364,316
Total Liabilities and Shareholders' Equity	455,511	459,307
Protective Insurance Corporation [Member] | Class A [Member]
Shareholders' equity [Abstract]
Common stock	111	111
Protective Insurance Corporation [Member] | Class B [Member]
Shareholders' equity [Abstract]
Common stock	$ 498	$ 499

Schedule II - Condensed Finan_3

Schedule II - Condensed Financial Information of Registrant, Statements of Operations (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
Revenue [Abstract]
Net investment income	$ 6,321	$ 5,486	$ 6,379	$ 7,236	$ 6,815	$ 6,703	$ 6,500	$ 6,231	$ 25,422	$ 26,249	$ 22,048
Net realized losses on investments	7,761	144	10,615	(27,756)	3,848	125	2,889	6,027	(9,236)	12,889	(25,691)
Total revenues									468,749	495,597	439,169
Expenses [Abstract]
Other									143,428	138,456	137,177
Total expenses									462,386	486,924	483,041
Federal income tax benefit									1,900	1,326	(9,797)
Net income (loss)	$ 11,971	$ 3,281	$ 11,367	$ (22,156)	$ 3,771	$ (707)	$ 1,535	$ 2,748	4,463	7,347	(34,075)
Protective Insurance Corporation [Member]
Revenue [Abstract]
Commissions and service fees									15,011	14,149	17,456
Cash dividends from subsidiaries									0	0	5,000
Net investment income									453	692	569
Net realized losses on investments									(10)	(46)	(192)
Other									138	17	51
Total revenues									15,592	14,812	22,884
Expenses [Abstract]
Salary and related items									10,663	11,804	20,158
Other									11,048	10,386	11,724
Total expenses									21,711	22,190	31,882
Loss before federal income tax benefit and equity in undistributed income of subsidiaries									(6,119)	(7,378)	(8,998)
Federal income tax benefit									(1,333)	(1,452)	(2,862)
Loss after federal income tax benefit and equity in undistributed income of subsidiaries									(4,786)	(5,926)	(6,136)
Equity in undistributed income of subsidiaries									9,249	13,273	(27,939)
Net income (loss)									$ 4,463	$ 7,347	$ (34,075)

Schedule II - Condensed Finan_4

Schedule II - Condensed Financial Information of Registrant, Statements of Comprehensive Income (loss) (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
Condensed Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 11,971	$ 3,281	$ 11,367	$ (22,156)	$ 3,771	$ (707)	$ 1,535	$ 2,748	$ 4,463	$ 7,347	$ (34,075)
Other comprehensive income (loss), net of tax [Abstract]
Unrealized net gains (losses) on fixed income securities									12,141	16,071	(6,868)
Foreign currency translation adjustments									249	645	(830)
Other comprehensive income (loss)									12,390	16,716	(7,698)
Comprehensive income (loss)									16,853	24,063	(41,773)
Protective Insurance Corporation [Member]
Condensed Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)									4,463	7,347	(34,075)
Other comprehensive income (loss), net of tax [Abstract]
Unrealized net gains (losses) on fixed income securities									12,141	16,071	(6,868)
Foreign currency translation adjustments									249	645	(830)
Other comprehensive income (loss)									12,390	16,716	(7,698)
Comprehensive income (loss)									$ 16,853	$ 24,063	$ (41,773)

Schedule II - Condensed Finan_5

Schedule II - Condensed Financial Information of Registrant, Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Statements of Cash Flows [Abstract]
Net cash provided by operating activities	$ 74,862	$ 86,680	$ 100,708
Investing activities [Abstract]
Distributions from limited partnerships	14,636	33,396	6,869
Net purchases of property and equipment	(1,470)	(1,953)	(5,439)
Net cash provided by (used in) investing activities	(86,032)	(151,890)	23,651
Financing activities [Abstract]
Dividends paid to shareholders	(5,692)	(5,857)	(16,835)
Repurchase of common shares	(1,782)	(11,501)	(4,596)
Net cash used in financing activities	(7,474)	(17,358)	(21,431)
Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	(18,459)	(81,923)	102,098
Cash, cash equivalents and restricted cash and cash equivalents at beginning of year	67,851
Cash, cash equivalents and restricted cash and cash equivalents at end of year	58,301	67,851
Protective Insurance Corporation [Member]
Condensed Statements of Cash Flows [Abstract]
Net cash provided by operating activities	12,350	10,643	14,019
Investing activities [Abstract]
Purchases of investments	(7,795)	(4,967)	(11,435)
Sales or maturities of investments	8,777	3,935	11,213
Distributions from limited partnerships	0	1	0
Net purchases of property and equipment	0	(380)	(3,677)
Net cash provided by (used in) investing activities	982	(1,411)	(3,899)
Financing activities [Abstract]
Dividends paid to shareholders	(5,692)	(5,857)	(16,835)
Repurchase of common shares	(1,782)	(11,501)	(4,596)
Net cash used in financing activities	(7,474)	(17,358)	(21,431)
Increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	5,858	(8,126)	(11,311)
Cash, cash equivalents and restricted cash and cash equivalents at beginning of year	7,059	15,185	26,496
Cash, cash equivalents and restricted cash and cash equivalents at end of year	$ 12,917	$ 7,059	$ 15,185

Schedule III - Supplementary _2

Schedule III - Supplementary Insurance Information (Details) - Property/Casualty Insurance [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplementary Insurance Information [Abstract]
Deferred policy acquisition costs		$ 9,744	$ 8,496	$ 6,568
Reserves for unpaid claims and claim adjustment expenses		1,089,669	988,305	865,339
Unearned premiums		63,731	74,810	71,625
Other policy claims and benefits payable		0	0	0
Net premium earned		445,515	447,288	432,880
Net investment income	[1]	25,422	26,249	22,048
Benefits, claims, losses and settlement expenses	[1]	318,958	348,468	345,864
Amortization of deferred policy acquisition costs		79,947	81,734	78,105
Other operating expenses	[1],[2]	41,241	34,043	23,514
Net premiums written		$ 441,000	$ 452,242	$ 444,398
[1]	Allocations of certain expenses have been made to investment income, settlement expenses and other operating expenses and are based on a number of assumptions and estimates.  Results among these categories would change if different methods were applied.
[2]	Commission allowances relating to reinsurance ceded are offset against other operating expenses.

Schedule IV - Reinsurance (Deta

Schedule IV - Reinsurance (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
Schedule IV - Reinsurance [Abstract]
Direct premiums										$ 557,795	$ 570,959	$ 562,364
Ceded to other companies	[1]									113,125	124,446	131,080
Assumed from other companies										845	775	1,596
Net		$ 120,273	$ 117,853	$ 97,730	$ 109,659	$ 111,357	$ 110,288	$ 115,631	$ 110,012	$ 445,515	$ 447,288	$ 432,880
% of amount assumed to net										0.20%	0.20%	0.40%
Retrocessions associated with premiums assumed from other companies										$ 0	$ 0	$ 0
[1]	Included in Ceded to Other Companies is $0 for each of 2020, 2019 and 2018 relating to retrocessions associated with premiums assumed from other companies.  Percentage of Amount Assumed to Net above considers the impact of this retrocession.

Schedule V - Valuation Allowa_2

Schedule V - Valuation Allowances and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	[1]	$ 3,404	$ 1,522	$ 1,849
Additions, charged to costs and expenses	[1]	18,980	1,960	61
Additions, other additions	[1]	0	0	0
Deductions	[1]	222	78	388
Balance as of end of period	[1]	22,162	3,404	1,522
Fixed Income Securities [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	[1]	0
Additions, charged to costs and expenses	[1]	1,035
Additions, other additions	[1]	0
Deductions	[1]	0
Balance as of end of period	[1]	1,035	0
Accounts Receivable [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	[1]	2,233	403	484
Additions, charged to costs and expenses	[1]	1,250	1,908	29
Additions, other additions	[1]	0	0	0
Deductions	[1]	23	78	110
Balance as of end of period	[1]	3,460	2,233	403
Reinsurance Recoverable [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	[1]	1,171	1,119	1,365
Additions, charged to costs and expenses	[1]	0	52	32
Additions, other additions	[1]	0	0	0
Deductions	[1]	199	0	278
Balance as of end of period	[1]	972	1,171	$ 1,119
Deductible Receivable Allowance [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	[1],[2]	0
Additions, charged to costs and expenses	[1],[2]	16,500
Additions, other additions	[1],[2]	0
Deductions	[1],[2]	0
Balance as of end of period	[1],[2]	16,500	0
Mortgage Loans [Member]
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of beginning of period	[1]	0
Additions, charged to costs and expenses	[1]	195
Additions, other additions	[1]	0
Deductions	[1]	0
Balance as of end of period	[1]	$ 195	$ 0
[1]	Effective January 1, 2020 the Company adopted the measurement of credit losses on financial instruments accounting standard that primarily affected its accounts receivable, reinsurance recoverable and commercial mortgage loans balances.  After consideration of existing valuation allowances maintained prior to adopting the new guidance, the Company increased its valuation allowance for credit losses at January 1, 2020 to conform to the new requirements.
[2]	In conjunction with the adoption of the credit losses accounting standard, the Company recorded an allowance for expected credit losses of $16,500 related to the PSG litigation matter.  See Note T – Litigation, Commitments and Contingencies for further discussion.

Schedule VI - Supplemental In_2

Schedule VI - Supplemental Information Concerning Property/Casualty Insurance Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Information Concerning Property/Casualty Insurance Operations [Abstract]
Deferred policy acquisition costs	$ 9,744	$ 8,496	$ 6,568
Reserves for unpaid claims adjustment expenses	1,089,669	988,305	865,339
Discount if any deducted from reserves	0	0	0
Unearned premiums	63,731	74,810	71,625
Earned premiums	445,515	447,288	432,880
Net investment income	25,422	26,249	22,048
Claims and claim adjustment expenses incurred related to current year	319,269	349,018	329,078
Claims and claim adjustment expenses incurred related to prior years	(311)	(550)	16,786
Amortization of deferred policy acquisition costs	79,947	81,734	78,105
Paid claims and claim adjustment expenses	243,657	247,872	228,591
Net premiums written	$ 441,000	$ 452,242	$ 444,398