Hallmark Financial Services (HALL) 10-Q 15 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 15, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2021
Entity File Number	001-11252
Entity Registrant Name	Hallmark Financial Services, Inc.
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	87-0447375
Entity Address, Address Line One	5420 Lyndon B. Johnson Freeway, Suite 1100
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75240
City Area Code	817
Local Phone Number	348-1600
Title of 12(b) Security	Common Stock
Trading Symbol	HALL
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		18,172,467
Entity Central Index Key	0000819913
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments:
Debt securities, available-for-sale, at fair value (amortized cost; $315,029 in 2021 and $502,167 in 2020)	$ 317,916	$ 507,279
Equity securities (cost; $39,129 in 2021 and $26,988 in 2020)	45,362	29,388
Total investments	363,278	536,667
Cash and cash equivalents	325,833	102,580
Restricted cash	3,793	5,728
Ceded unearned premiums	145,858	143,446
Premiums receivable	85,177	120,332
Accounts receivable	6,595	5,967
Receivable for securities	5,613	913
Reinsurance recoverable	515,088	497,846
Deferred policy acquisition costs	10,494	17,840
Intangible assets, net	944	1,322
Federal income tax recoverable	17,347	24,691
Deferred federal income taxes, net	9,326	8,724
Prepaid expenses	4,683	2,648
Other assets	26,179	28,013
Total assets	1,520,208	1,496,717
Liabilities:
Reserves for unpaid losses and loss adjustment expenses	815,381	789,768
Unearned premiums	300,383	320,806
Senior unsecured notes due 2029 (less unamortized debt issuance costs of $770 in 2021 and $844 in 2020)	49,230	49,156
Subordinated debt securities (less unamortized debt issuance costs of $757 in 2021 and $795 in 2020)	55,946	55,907
Reinsurance payable	71,183	61,100
Pension liability	1,530	1,859
Payable for securities	1,047
Accounts payable and other accrued expenses	47,728	50,415
Total liabilities	1,342,428	1,329,011
Commitments and contingencies (Note 19)
Stockholders' equity:
Common stock, $.18 par value, authorized 33,333,333 shares; issued 20,872,831 shares in 2021 and 2020	3,757	3,757
Additional paid-in capital	122,773	122,893
Retained earnings	77,270	65,699
Accumulated other comprehensive (loss) income	(1,272)	383
Treasury stock (2,700,364 shares in 2021 and 2,730,673 in 2020), at cost	(24,748)	(25,026)
Total stockholders' equity	177,780	167,706
Total liabilities and stockholders' equity	$ 1,520,208	$ 1,496,717

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt securities, available-for-sale, Amortized cost (in dollars)	$ 315,029	$ 502,167
Equity securities, available for sale, cost (in dollars)	$ 39,129	$ 26,988
Common stock, par value (in dollars per share)	$ 0.18	$ 0.18
Common stock, authorized shares	33,333,333	33,333,333
Common stock, issued shares	20,872,831	20,872,831
Treasury stock, shares	2,700,364	2,730,673
Senior unsecured notes due 2029 [Member]
Unamortized debt issuance cost (in dollars)	$ 770	$ 844
Subordinated Debt [Member]
Unamortized debt issuance cost (in dollars)	$ 757	$ 795

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Consolidated Statements of Operations [Abstract]
Gross premiums written	$ 169,104	$ 196,464	$ 501,838	$ 581,697
Ceded premiums written	(78,140)	(83,408)	(231,891)	(239,267)
Net premiums written	90,964	113,056	269,947	342,430
Change in unearned premiums	3,383	3,664	22,836	19,587
Net premiums earned	94,347	116,720	292,783	362,017
Investment income, net of expenses	2,213	2,660	7,576	10,314
Investment (losses) gains, net	(533)	(627)	9,122	(27,899)
Finance charges	1,076	1,316	3,318	4,488
Commission and fees	232	209	742	793
Other income	15	15	50	48
Total revenues	97,350	120,293	313,591	349,761
Losses and loss adjustment expenses	63,706	122,555	209,674	308,278
Operating expenses	27,882	33,640	85,188	92,059
Interest expense	1,245	1,273	3,743	4,061
Impairment of goodwill and other intangible assets				45,996
Amortization of intangible assets	126	617	378	1,851
Total expenses	92,959	158,085	298,983	452,245
Pre-tax income (loss)	4,391	(37,792)	14,608	(102,484)
Income tax expense (benefit)	946	(9,404)	3,037	(15,943)
Net income (loss)	$ 3,445	$ (28,388)	$ 11,571	$ (86,541)
Net income (loss) per share:
Basic (in dollars per share)	$ 0.19	$ (1.56)	$ 0.64	$ (4.77)
Diluted (in dollars per share)	$ 0.19	$ (1.56)	$ 0.64	$ (4.77)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Consolidated Statements of Comprehensive (Loss) Income [Abstract]
Net (loss) income	$ 3,445	$ (28,388)	$ 11,571	$ (86,541)
Other comprehensive (loss) income:
Change in net actuarial gain	43	35	130	104
Tax effect on change in net actuarial gain	(9)	(8)	(27)	(22)
Unrealized holding gains arising during the period	276	2,706	3,063	4,149
Tax effect on unrealized holding gains arising during the period	(58)	(568)	(643)	(872)
Reclassification adjustment for losses included in net (loss) income	(1,059)	(390)	(5,288)	(5,612)
Tax effect on reclassification adjustment for losses included in net (loss) income	222	82	1,110	1,179
Other comprehensive (loss) gain, net of tax	(585)	1,857	(1,655)	(1,074)
Comprehensive income (loss)	$ 2,860	$ (26,531)	$ 9,916	$ (87,615)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2019	$ 3,757	$ 123,468	$ 160,570	$ 688	$ (25,201)
Equity based compensation		(416)
Shares issued under employee benefit plans					175
Shares issued under employee benefit plans		(175)
Net income (loss)			(86,541)			$ (86,541)
Change in net actuarial gain, net of tax				82
Unrealized holding gains arising during period, net of tax				3,277
Reclassification adjustment for losses included in net (loss) income, net of tax				(4,433)
Ending balance at Sep. 30, 2020	3,757	122,877	74,029	(386)	(25,026)	175,251
Balance at Dec. 31, 2019	3,757	123,468	160,570	688	(25,201)
Ending balance at Dec. 31, 2020	3,757	122,893	65,699	383	(25,026)	167,706
Balance at Jun. 30, 2020	3,757	122,729	102,417	(2,243)	(25,032)
Equity based compensation		154
Shares issued under employee benefit plans					6
Shares issued under employee benefit plans		(6)
Net income (loss)			(28,388)			(28,388)
Change in net actuarial gain, net of tax				27
Unrealized holding gains arising during period, net of tax				2,138
Reclassification adjustment for losses included in net (loss) income, net of tax				(308)
Ending balance at Sep. 30, 2020	3,757	122,877	74,029	(386)	(25,026)	175,251
Balance at Dec. 31, 2020	3,757	122,893	65,699	383	(25,026)	167,706
Balance at Dec. 31, 2020	3,757	122,893	65,699	383	(25,026)	167,706
Ending balance at Jun. 30, 2021	3,757	122,782	73,825	(687)	(24,761)
Balance at Dec. 31, 2020	3,757	122,893	65,699	383	(25,026)	167,706
Equity based compensation		158
Shares issued under employee benefit plans					278
Shares issued under employee benefit plans		(278)
Net income (loss)			11,571			11,571
Change in net actuarial gain, net of tax				103
Unrealized holding gains arising during period, net of tax				2,420
Reclassification adjustment for losses included in net (loss) income, net of tax				(4,178)
Ending balance at Sep. 30, 2021	3,757	122,773	77,270	(1,272)	(24,748)	177,780
Ending balance at Jun. 30, 2021	3,757	122,782	73,825	(687)	(24,761)
Equity based compensation		4
Shares issued under employee benefit plans					13
Shares issued under employee benefit plans		(13)
Net income (loss)			3,445			3,445
Change in net actuarial gain, net of tax				34
Unrealized holding gains arising during period, net of tax				218
Reclassification adjustment for losses included in net (loss) income, net of tax				(837)
Ending balance at Sep. 30, 2021	$ 3,757	$ 122,773	$ 77,270	$ (1,272)	$ (24,748)	$ 177,780

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 11,571	$ (86,541)
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities:
Depreciation and amortization expense	2,523	4,257
Deferred federal income taxes benefit	(163)	(5,597)
Investment (gains) losses , net	(9,122)	27,899
Share-based payments expense (benefit)	158	(416)
Impairment of goodwill and other intangibles		45,996
Change in ceded unearned premiums	(2,412)	18,045
Change in premiums receivable	35,155	35,921
Change in accounts receivable	(628)	(908)
Change in deferred policy acquisition costs	7,346	629
Change in reserves for losses and loss adjustment expenses	25,613	135,536
Change in unearned premiums	(20,423)	(37,632)
Change in reinsurance recoverable	(17,242)	(193,259)
Change in reinsurance payable	10,083	15,601
Change in federal income tax payable (recoverable)	7,344	(11,000)
Change in all other liabilities	(2,903)	(15,499)
Change in all other assets	448	4,073
Net cash provided by (used in) operating activities	47,348	(62,895)
Cash flows from investing activities:
Purchases of property and equipment	(1,632)	(1,277)
Purchases of investment securities	(120,276)	(160,410)
Maturities, sales and redemptions of investment securities	295,878	373,988
Net cash provided by investing activities	173,970	212,301
Increase in cash and cash equivalents and restricted cash	221,318	149,406
Cash and cash equivalents and restricted cash at beginning of period	108,308	54,948
Cash and cash equivalents and restricted cash at end of period	$ 329,626	$ 204,354

General

General	9 Months Ended
	Sep. 30, 2021
General [Abstract]
General	1. General Hallmark Financial Services, Inc. (“Hallmark” and, together with subsidiaries, the “Company”, “we,” “us” or “our”) is an insurance holding company that, through its subsidiaries, engages in the sale of property/casualty insurance products to businesses and individuals. Our business involves marketing, distributing, underwriting and servicing our insurance products, as well as providing other insurance related services. We market, distribute, underwrite and service our property/casualty insurance products primarily through business units organized by products and distribution channels. Our business units are supported by our insurance company subsidiaries. Our Commercial Auto business unit offers primary and excess commercial vehicle insurance products and services; our E&S Casualty business unit offers primary and excess liability, excess public entity liability, E&S package and garage liability insurance products and services; our E&S Property business unit offers primary and excess commercial property insurance for both catastrophe and non-catastrophe exposures; our Professional Liability business unit offers healthcare and financial lines professional liability insurance products and services primarily for businesses, medical professionals, medical facilities and, through 2020, senior care facilities; and our Aerospace & Programs business unit offers general aviation and, until exited during 2020, satellite launch property/casualty insurance products and services, as well as certain specialty programs. Our Commercial Accounts business unit offers package and monoline property/casualty and, until exited in 2016, occupational accident insurance products. Our Specialty Personal Lines business unit offers non-standard personal automobile and renters insurance products and services. Our former Workers Compensation operating unit specialized in small and middle market workers compensation business until discontinued during 2015. Our insurance company subsidiaries supporting these business units are American Hallmark Insurance Company of Texas (“AHIC”), Hallmark Insurance Company (“HIC”), Hallmark Specialty Insurance Company (“HSIC”), Hallmark County Mutual Insurance Company (“HCM”), Hallmark National Insurance Company (“HNIC”) and Texas Builders Insurance Company (“TBIC”). These business units are segregated into three reportable industry segments for financial accounting purposes. The Specialty Commercial Segment includes our Commercial Auto business unit, E&S Casualty business unit, E&S Property business unit, Professional Liability business unit and Aerospace & Programs business unit. The Standard Commercial Segment consists of the Commercial Accounts business unit and the runoff from our former Workers Compensation operating unit. The Personal Segment consists solely of our Specialty Personal Lines business unit.

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Basis of Presentation [Abstract]
Basis of Presentation	2. Basis of Presentation Our unaudited consolidated financial statements included herein have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and include our accounts and the accounts of our subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Certain footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to rules and regulations of the Securities and Exchange Commission (“SEC”) for interim financial reporting. These unaudited consolidated financial statements should be read in conjunction with our audited consolidated financial statements for the year ended December 31, 2020 included in our Annual Report on Form 10-K filed with the SEC. The interim financial data as of September 30, 2021 and 2020 is unaudited. However, in the opinion of management, the interim financial data includes all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the results for the interim periods. The results of operations for the periods ended September 30, 2021 are not necessarily indicative of the operating results to be expected for the full year. Use of Estimates in the Preparation of the Financial Statements Our preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect our reported amounts of assets and liabilities and our disclosure of contingent assets and liabilities at the date of our consolidated financial statements, as well as our reported amounts of revenues and expenses during the reporting period. Refer to “Critical Accounting Estimates and Judgments” under Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2020 for information on accounting policies that we consider critical in preparing our consolidated financial statements. Actual results could differ materially from those estimates. Fair Value of Financial Instruments Fair value estimates are made at a point in time based on relevant market data as well as the best information available about the financial instruments. Fair value estimates for financial instruments for which no or limited observable market data is available are based on judgments regarding current economic conditions, credit and interest rate risk. These estimates involve significant uncertainties and judgments and cannot be determined with precision. As a result, such calculated fair value estimates may not be realizable in a current sale or immediate settlement of the instrument. In addition, changes in the underlying assumptions used in the fair value measurement technique, including discount rate and estimates of future cash flows, could significantly affect these fair value estimates. Cash and Cash Equivalents Restricted Cash Senior Unsecured Notes Due 2029 Subordinated Debt Securities For reinsurance balances, premiums receivable, federal income tax recoverable, other assets and other liabilities, the carrying amounts approximate fair value because of the short maturity of such financial instruments. Variable Interest Entities On June 21, 2005, we formed Hallmark Statutory Trust I (“Trust I”), an unconsolidated trust subsidiary, for the sole purpose of issuing $30.0 million in trust preferred securities. Trust I used the proceeds from the sale of these securities and our initial capital contribution to purchase $30.9 million of subordinated debt securities from Hallmark. The debt securities are the sole assets of Trust I, and the payments under the debt securities are the sole revenues of Trust I. On August 23, 2007, we formed Hallmark Statutory Trust II (“Trust II”), an unconsolidated trust subsidiary, for the sole purpose of issuing $25.0 million in trust preferred securities. Trust II used the proceeds from the sale of these securities and our initial capital contribution to purchase $25.8 million of subordinated debt securities from Hallmark. The debt securities are the sole assets of Trust II, and the payments under the debt securities are the sole revenues of Trust II. We evaluate on an ongoing basis our investments in Trust I and Trust II (collectively the “Trusts”) and have determined that we do not have a variable interest in the Trusts. Therefore, the Trusts are not included in our consolidated financial statements. ​ Income Taxes We file a consolidated federal income tax return. Deferred federal income taxes reflect the future tax consequences of differences between the tax basis of assets and liabilities and their financial reporting amounts at each year end. Deferred taxes are recognized using the liability method, whereby tax rates are applied to cumulative temporary differences based on when and how they are expected to affect the tax return. Deferred tax assets and liabilities are adjusted for tax rate changes in effect for the year in which these temporary differences are expected to be recovered or settled. Net deferred tax assets are held at their net realizable value and an allowance is taken as needed. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. There were no uncertain tax positions at September 30, 2021. Recently Adopted Accounting Pronouncements In December 2019, the FASB released ASU 2019-12, Simplifying the Accounting for Income Taxes. Recently Issued Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform ("ASU 2020-04"). ASU 2020-04 provides optional guidance for a limited period of time to ease potential accounting impact associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate ("LIBOR"). The amendments in this ASU apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. The amendments in ASU 2020-04 could be adopted as of March 12, 2020 and are effective December 31, 2022. We do not currently have any contracts that have been changed to a new reference rate, but we will continue to evaluate our contracts and the effects of this standard on our condensed consolidated financial statements prior to adoption. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments” (Topic 326). ASU 2016-13 requires organizations to estimate credit losses on certain types of financial instruments, including receivables and available-for-sale debt securities, by introducing an approach based on expected losses. The expected loss approach will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. As a smaller reporting company, ASU 2016-13 is effective for fiscal years of the Company beginning after December 15, 2022, including interim periods within those fiscal years. ASU 2016-13 requires a modified retrospective transition method and early adoption is permitted. We are currently evaluating the impact that the adoption of this standard will have on our financial results and disclosures.

Revision of Previously Issued C

Revision of Previously Issued Consolidated Financial Statements	9 Months Ended
	Sep. 30, 2021
Revision of Previously Issued Consolidated Financial Statements [Abstract]
Revision of Previously Issued Consolidated Financial Statements	​ In connection with the preparation of our consolidated financial statements for the quarter ended September 30, 2021, we identified immaterial errors relating to certain reinsurance treaties and other items related to prior periods. We maintain various Quota Share and Excess of Loss reinsurance treaties for our casualty lines of business produced by our Specialty Commercial Segment. We incorrectly determined the gross premium subject to these reinsurance treaties from October 1, 2018 through June 30, 2021, which overstated our net earned premium and understated our net losses incurred and operating expenses. This error impacted only excess policies in our Commercial Auto, E&S Casualty and Professional Liability business units within our Specialty Commercial Segment. ​ In accordance with SEC Staff Accounting Bulletin Topics 1.M and 1.N , consolidated financial statements. However, adjusting for the cumulative effect of this error in the consolidated financial statements of operations for 2021 would be material to the Company’s results for this period. ​ The accompanying financial statements and relevant footnotes to the consolidated financial statements in this Quarterly Report on Form 10-Q have been revised to correct for these immaterial prior period errors. The impact to the statements of comprehensive income and equity are captured within the tables below through the presentation of the impact to net income and retained earnings. The tables below provide reconciliations of our previously reported amounts to the revised amounts corrected for these immaterial errors in the prior periods indicated. ​ Consolidated Statements of Operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended September 30, ​ Nine months ended September 30, ​ ​ 2020 ​ 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Ceded premiums written ​ $ (80,353) ​ $ (3,055) ​ $ (83,408) ​ $ (230,094) ​ $ (9,173) ​ $ (239,267) Net premiums written ​ 116,111 ​ (3,055) ​ 113,056 ​ 351,603 ​ (9,173) ​ 342,430 Change in unearned premiums ​ ​ 3,449 ​ ​ 215 ​ ​ 3,664 ​ ​ 17,486 ​ ​ 2,101 ​ ​ 19,587 Net premiums earned ​ 119,560 ​ (2,840) ​ 116,720 ​ 369,089 ​ (7,072) ​ 362,017 Total revenues ​ 123,133 ​ (2,840) ​ 120,293 ​ 356,833 ​ (7,072) ​ 349,761 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Losses and loss adjustment expenses ​ ​ 124,253 ​ ​ (1,698) ​ ​ 122,555 ​ ​ 312,531 ​ ​ (4,253) ​ ​ 308,278 Operating expenses ​ 34,296 ​ (656) ​ 33,640 ​ 93,703 ​ (1,644) ​ 92,059 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) income before tax ​ $ (37,306) ​ $ (486) ​ $ (37,792) ​ $ (101,309) ​ $ (1,175) ​ $ (102,484) Income tax expense ​ (9,302) ​ (102) ​ (9,404) ​ (15,696) ​ (247) ​ (15,943) Net loss ​ $ (28,004) ​ $ (384) ​ $ (28,388) ​ $ (85,613) ​ $ (928) ​ $ (86,541) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common stockholders net income per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic ​ $ (1.54) ​ $ (0.02) ​ $ (1.56) ​ $ (4.72) ​ $ (0.05) ​ $ (4.77) Diluted ​ $ (1.54) ​ $ (0.02) ​ $ (1.56) ​ $ (4.72) ​ $ (0.05) ​ $ (4.77) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended December 31, ​ For the year ended December 31, ​ ​ 2019 ​ 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Ceded premiums written ​ $ (347,279) ​ $ (5,978) ​ $ (353,257) ​ $ (304,395) ​ $ (10,640) ​ $ (315,035) Net premiums written ​ 496,552 ​ (5,978) ​ 490,574 ​ 438,973 ​ (10,640) ​ 428,333 Change in unearned premiums ​ ​ (59,675) ​ ​ 3,393 ​ ​ (56,282) ​ ​ 42,825 ​ ​ 743 ​ ​ 43,568 Net premiums earned ​ 436,877 ​ (2,585) ​ 434,292 ​ 481,798 ​ (9,897) ​ 471,901 Total revenues ​ 486,371 ​ (2,585) ​ 483,786 ​ 478,745 ​ (9,897) ​ 468,848 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Losses and loss adjustment expenses ​ ​ 362,165 ​ ​ (1,619) ​ ​ 360,546 ​ ​ 412,851 ​ ​ (5,944) ​ ​ 406,907 Operating expenses ​ 117,357 ​ (325) ​ 117,032 ​ 126,266 ​ (2,347) ​ 123,919 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) income before tax ​ $ (1,032) ​ $ (642) ​ $ (1,674) ​ $ (114,162) ​ $ (1,606) ​ $ (115,768) Income tax expense ​ (407) ​ (135) ​ (542) ​ (22,507) ​ 1,090 ​ (21,417) Net loss ​ $ (625) ​ $ (507) ​ $ (1,132) ​ $ (91,655) ​ $ (2,696) ​ $ (94,351) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common stockholders net income per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic ​ $ (0.03) ​ $ (0.03) ​ $ (0.06) ​ $ (5.05) ​ $ (0.15) ​ $ (5.20) Diluted ​ $ (0.03) ​ $ (0.03) ​ $ (0.06) ​ $ (5.05) ​ $ (0.15) ​ $ (5.20) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ Three months ended June 30, ​ Six months ended June 30, ​ ​ 2021 ​ 2021 ​ 2021 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised reported Revisions As revised Ceded premiums written ​ $ (69,871) ​ $ (1,650) ​ $ (71,521) ​ $ (80,582) ​ $ (1,648) ​ $ (82,230) ​ $ (150,453) ​ $ (3,298) ​ $ (153,751) Net premiums written ​ 93,147 ​ (1,650) ​ 91,497 ​ 89,134 ​ (1,648) ​ 87,486 ​ 182,281 ​ (3,298) ​ 178,983 Change in unearned premiums ​ ​ 11,071 ​ ​ (716) ​ ​ 10,355 ​ ​ 9,477 ​ ​ (379) ​ ​ 9,098 ​ ​ 20,548 ​ ​ (1,095) ​ ​ 19,453 Net premiums earned ​ 104,218 ​ (2,366) ​ 101,852 ​ 98,611 ​ (2,027) ​ 96,584 ​ 202,829 ​ (4,393) ​ 198,436 Total revenues ​ 114,419 ​ (2,366) ​ 112,053 ​ 106,215 ​ (2,027) ​ 104,188 ​ 220,634 ​ (4,393) ​ 216,241 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Losses and loss adjustment expenses ​ ​ 70,903 ​ ​ (1,424) ​ ​ 69,479 ​ ​ 77,719 ​ ​ (1,230) ​ ​ 76,489 ​ ​ 148,622 ​ ​ (2,654) ​ ​ 145,968 Operating expenses ​ 30,441 ​ (468) ​ 29,973 ​ 27,653 ​ (319) ​ 27,334 ​ 58,094 ​ (787) ​ 57,307 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) income before tax ​ $ 11,700 ​ $ (473) ​ $ 11,227 ​ $ (532) ​ $ (478) ​ $ (1,010) ​ $ 11,168 ​ $ (951) ​ $ 10,217 Income tax expense ​ 2,355 ​ (99) ​ 2,256 ​ (65) ​ (100) ​ (165) ​ 2,290 ​ (199) ​ 2,091 Net loss ​ $ 9,345 ​ $ (374) ​ $ 8,971 ​ $ (467) ​ $ (378) ​ $ (845) ​ $ 8,878 ​ $ (752) ​ $ 8,126 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common stockholders net income per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic ​ $ 0.52 ​ $ (0.03) ​ $ 0.49 ​ $ (0.03) ​ $ (0.02) ​ $ (0.05) ​ $ 0.49 ​ $ (0.04) ​ $ 0.45 Diluted ​ $ 0.52 ​ $ (0.03) ​ $ 0.49 ​ $ (0.03) ​ $ (0.02) ​ $ (0.05) ​ $ 0.49 ​ $ (0.04) ​ $ 0.45 ​ ​ ​ ​ ​ ​ Consolidated Balance Sheets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Ceded unearned premiums ​ $ 164,221 ​ $ 3,777 ​ $ 167,998 ​ $ 138,926 ​ $ 4,520 ​ $ 143,446 Reinsurance recoverable ​ 315,466 ​ ​ 1,671 ​ ​ 317,137 ​ 490,231 ​ ​ 7,615 ​ ​ 497,846 Federal income tax recoverable ​ 8,995 ​ ​ 139 ​ ​ 9,134 ​ 25,642 ​ ​ (951) ​ ​ 24,691 Total assets ​ 1,495,274 ​ ​ 5,587 ​ ​ 1,500,861 ​ 1,485,533 ​ ​ 11,184 ​ ​ 1,496,717 Reinsurance payable ​ 59,274 ​ ​ 6,107 ​ ​ 65,381 ​ 46,700 ​ ​ 14,400 ​ ​ 61,100 Total liabilities ​ ​ 1,231,992 ​ ​ 6,107 ​ ​ 1,238,099 ​ ​ 1,314,611 ​ ​ 14,400 ​ ​ 1,329,011 Retained earnings ​ 160,570 ​ ​ (521) ​ ​ 160,049 ​ 68,915 ​ ​ (3,216) ​ ​ 65,699 Total stockholders' equity ​ ​ 263,282 ​ ​ (521) ​ ​ 262,761 ​ ​ 170,922 ​ ​ (3,216) ​ ​ 167,706 Total liabilities and stockhoders' equity ​ ​ 1,495,274 ​ ​ 5,586 ​ ​ 1,500,860 ​ ​ 1,485,533 ​ ​ 11,184 ​ ​ 1,496,717 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ March 31, ​ June 30, ​ 2020 2021 2021 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised reported Revisions As revised Ceded unearned premiums ​ $ 144,075 ​ $ 2,101 ​ $ 146,176 ​ $ 134,206 ​ $ 3,804 ​ $ 138,010 ​ $ 139,609 ​ $ 3,425 ​ $ 143,034 Reinsurance recoverable ​ 504,472 ​ ​ 4,253 ​ ​ 508,725 ​ 494,815 ​ ​ 9,039 ​ ​ 503,854 ​ 494,473 ​ ​ 10,269 ​ ​ 504,742 Federal income tax recoverable ​ 19,748 ​ ​ 247 ​ ​ 19,995 ​ 23,855 ​ ​ (852) ​ ​ 23,003 ​ 20,025 ​ ​ (751) ​ ​ 19,274 Total assets ​ 1,497,507 ​ ​ 6,601 ​ ​ 1,504,108 ​ 1,517,543 ​ ​ 11,991 ​ ​ 1,529,534 ​ 1,506,694 ​ ​ 12,943 ​ ​ 1,519,637 Reinsurance payable ​ 67,346 ​ ​ 7,529 ​ ​ 74,875 ​ 51,673 ​ ​ 15,582 ​ ​ 67,255 ​ 51,921 ​ ​ 16,911 ​ ​ 68,832 Total liabilities ​ ​ 1,321,328 ​ ​ 7,529 ​ ​ 1,328,857 ​ ​ 1,337,791 ​ ​ 15,582 ​ ​ 1,353,373 ​ ​ 1,327,810 ​ ​ 16,911 ​ ​ 1,344,721 Retained earnings ​ 74,957 ​ ​ (928) ​ ​ 74,029 ​ 78,260 ​ ​ (3,592) ​ ​ 74,668 ​ 77,793 ​ ​ (3,968) ​ ​ 73,825 Total stockholders' equity ​ ​ 176,179 ​ ​ (928) ​ ​ 175,251 ​ ​ 179,752 ​ ​ (3,592) ​ ​ 176,160 ​ ​ 178,884 ​ ​ (3,968) ​ ​ 174,916 Total liabilities and stockhoders' equity ​ ​ 1,497,507 ​ ​ 6,601 ​ ​ 1,504,108 ​ ​ 1,517,543 ​ ​ 11,990 ​ ​ 1,529,533 ​ ​ 1,506,694 ​ ​ 12,943 ​ ​ 1,519,637 ​ Consolidated Statements of Cash Flows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended December 31, ​ For the year ended December 31, ​ For the nine months ended September 30, ​ ​ 2019 ​ 2020 ​ 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised reported Revisions As revised Net income ​ $ (625) ​ $ (507) ​ $ (1,132) ​ $ (91,655) ​ $ (2,696) ​ $ (94,351) ​ $ (85,613) ​ $ (928) ​ $ (86,541) Change in reinsurance payable ​ (8,054) ​ 5,654 ​ (2,400) ​ (12,574) ​ 8,293 ​ (4,281) ​ 8,072 ​ 7,529 ​ 15,601 Change in reinsurance recoverable ​ (63,437) ​ (1,619) ​ (65,056) ​ (174,765) ​ (5,944) ​ (180,709) ​ (189,006) ​ (4,253) ​ (193,259) Change in ceded unearned premiums ​ (31,190) ​ (3,393) ​ (34,583) ​ 25,295 ​ (743) ​ 24,552 ​ 20,146 ​ (2,101) ​ 18,045 Change in federal income tax recoverable ​ (8,999) ​ (135) ​ (9,134) ​ (16,647) ​ 1,090 ​ (15,557) ​ (10,753) ​ (247) ​ (11,000) Net cash provided by (used in) operating activities ​ $ 27,670 ​ $ — ​ $ 27,670 ​ $ (69,327) ​ $ — ​ $ (69,327) ​ $ (62,895) ​ $ — ​ $ (62,895) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ended March 31, ​ For the six months ended June 30, ​ ​ 2021 ​ 2021 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Net income ​ $ 9,345 ​ $ (374) ​ $ 8,971 ​ $ 8,878 ​ $ (752) ​ $ 8,126 Change in reinsurance payable ​ 4,973 ​ 1,182 ​ 6,155 ​ 5,221 ​ 2,510 ​ 7,731 Change in reinsurance recoverable ​ (4,584) ​ (1,424) ​ (6,008) ​ (4,242) ​ (2,653) ​ (6,895) Change in ceded unearned premiums ​ 4,720 ​ 716 ​ 5,436 ​ (683) ​ 1,094 ​ 411 Change in federal income tax payable (recoverable) ​ 1,787 ​ (100) ​ 1,687 ​ 5,617 ​ (200) ​ 5,417 Net cash provided by (used in) operating activities ​ $ 29,476 ​ $ — ​ $ 29,476 ​ $ 28,899 ​ $ — ​ $ 28,899 ​

Acquisitions, Goodwill and Inde

Acquisitions, Goodwill and Indefinite-Lived Intangible Assets	9 Months Ended
	Sep. 30, 2021
Acquisitions, Goodwill and Indefinite-Lived Intangible Assets [Abstract]
Acquisitions, Goodwill and Indefinite-Lived Intangible Assets	4. Acquisitions, Goodwill and Indefinite-Lived Intangible Assets In connection with its normal process for evaluating impairment triggering events, the Company determined that a significant decline in its market capitalization below its stockholders’ equity during the first quarter of 2020 indicated the impairment of the goodwill and indefinite-lived intangible assets included in its balance sheet. As a result, the Company took a $44.7 million charge to goodwill and a $1.3 million charge to indefinite-lived intangible assets during the first quarter of 2020. As of September 30, 2021, there was no goodwill or ​

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2021
Fair Value [Abstract]
Fair Value	5. Fair Value ASC 820 defines fair value, establishes a consistent framework for measuring fair value and requires disclosure about fair value measurements. ASC 820, among other things, requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. In addition, ASC 820 precludes the use of block discounts when measuring the fair value of instruments traded in an active market, which were previously applied to large holdings of publicly traded equity securities. We determine the fair value of our financial instruments based on the fair value hierarchy established in ASC 820. In accordance with ASC 820, we utilize the following fair value hierarchy: ● Level 1: quoted prices in active markets for identical assets; ● Level 2: inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, inputs of identical assets for less active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the instrument; and ● Level 3: inputs to the valuation methodology that are unobservable for the asset or liability. This hierarchy requires the use of observable market data when available. Under ASC 820, we determine fair value based on the price that would be received for an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. It is our policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements, in accordance with the fair value hierarchy described above. Fair value measurements for assets and liabilities where there exists limited or no observable market data are calculated based upon our pricing policy, the economic and competitive environment, the characteristics of the asset or liability and other factors as appropriate. These estimated fair values may not be realized upon actual sale or immediate settlement of the asset or liability. Where quoted prices are available on active exchanges for identical instruments, investment securities are classified within Level 1 of the valuation hierarchy. Level 1 investment securities include equity securities. Level 2 investment securities include corporate bonds, collateralized corporate bank loans, municipal bonds, U.S. Treasury securities, other obligations of the U.S. Government and mortgage-backed securities for which quoted prices are not available on active exchanges for identical instruments. We use third-party pricing services to determine fair values for each Level 2 investment security in all asset classes. Since quoted prices in active markets for identical assets are not available, these prices are determined using observable market information such as quotes from less active markets and/or quoted prices of securities with similar characteristics, among other things. We have reviewed the processes used by the pricing services and have determined that they result in fair values consistent with the requirements of ASC 820 for Level 2 investment securities. We have not adjusted any prices received from third-party pricing sources. There were no transfers between Level 1 Level 2 In cases where there is limited activity or less transparency around inputs to the valuation, investment securities are classified within Level 3 of the valuation hierarchy. Level 3 investments are valued based on the best available data in order to approximate fair value. This data may be internally developed and consider risk premiums that a market participant would require. Investment securities classified within Level 3 include other less liquid investment securities. The following table presents, for each of the fair value hierarchy levels, assets that are measured at fair value on a recurring basis at September 30, 2021 and December 31, 2020 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of September 30, 2021 ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Identical Assets ​ Other Observable ​ Unobservable ​ ​ ​ ​ (Level 1) Inputs (Level 2) Inputs (Level 3) Total U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ 66,496 ​ $ — ​ $ 66,496 Corporate bonds ​ — ​ 121,741 ​ 356 ​ 122,097 Corporate bank loans ​ — ​ 86,334 ​ — ​ 86,334 Municipal bonds ​ — ​ 40,971 ​ — ​ 40,971 Mortgage-backed ​ — ​ 2,018 ​ — ​ 2,018 Total debt securities ​ — ​ 317,560 ​ 356 ​ 317,916 Total equity securities ​ 45,362 ​ — ​ — ​ 45,362 Total investments ​ $ 45,362 ​ $ 317,560 ​ $ 356 ​ $ 363,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2020 ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Identical Assets ​ Other Observable ​ Unobservable ​ ​ ​ ​ (Level 1) Inputs (Level 2) Inputs (Level 3) Total U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ 179,746 ​ $ — ​ $ 179,746 Corporate bonds ​ — ​ 219,020 ​ 348 ​ 219,368 Corporate bank loans ​ — ​ 52,782 ​ — ​ 52,782 Municipal bonds ​ — ​ 50,539 ​ — ​ 50,539 Mortgage-backed ​ — ​ 4,844 ​ — ​ 4,844 Total debt securities ​ — ​ 506,931 ​ 348 ​ 507,279 Total equity securities ​ 29,388 ​ — ​ — ​ 29,388 Total investments ​ $ 29,388 ​ $ 506,931 ​ $ 348 ​ $ 536,667 ​ Due to significant unobservable inputs into the valuation model for one corporate bond as of September 30, 2021 and December 31, 2020, we classified this investment as Level 3 in the fair value hierarchy. The corporate bond is a convertible senior note and its fair value was estimated by the sum of the bond value using an income approach discounting the scheduled interest and principal payments and the conversion feature utilizing a binomial lattice model. The following table summarizes the changes in fair value for all financial assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the nine months ended September 30, 2021 and 2020 (in thousands): ​ ​ ​ ​ Beginning balance as of January 1, 2021 $ 348 Sales ​ — Settlements ​ — Purchases ​ — Issuances ​ — Total realized/unrealized losses included in net income ​ — Net gain included in other comprehensive income ​ 8 Transfers into Level 3 ​ — Transfers out of Level 3 ​ — Ending balance as of September 30, 2021 ​ $ 356 ​ ​ ​ ​ ​ Beginning balance as of January 1, 2020 $ 339 Sales ​ — Settlements ​ — Purchases ​ — Issuances ​ — Total realized/unrealized gains included in net loss ​ — Net gains included in other comprehensive loss ​ (14) Transfers into Level 3 ​ — Transfers out of Level 3 ​ — Ending balance as of September 30, 2020 ​ $ 325 ​

Investments

Investments	9 Months Ended
	Sep. 30, 2021
Investments [Abstract]
Investments	6. Investments The amortized cost/carrying value and estimated fair value of investments in debt and equity securities by category is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross ​ ​ ​ ​ ​ Amortized Cost/ ​ Unrealized ​ Unrealized ​ ​ ​ ​ Carrying Value Gains Losses Fair Value As of September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury securities and obligations of U.S. Government ​ $ 66,354 ​ $ 142 ​ $ — ​ $ 66,496 Corporate bonds ​ 119,341 ​ 2,829 ​ (73) ​ 122,097 Corporate bank loans ​ 86,749 ​ 117 ​ (532) ​ 86,334 Municipal bonds ​ 40,618 ​ 421 ​ (68) ​ 40,971 Mortgage-backed ​ 1,967 ​ 55 ​ (4) ​ 2,018 Total debt securities ​ 315,029 ​ 3,564 ​ (677) ​ 317,916 Total equity securities ​ 39,129 ​ 8,148 ​ (1,915) ​ 45,362 Total investments ​ $ 354,158 ​ $ 11,712 ​ $ (2,592) ​ $ 363,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ Amortized Cost/ ​ Unrealized ​ Unrealized ​ ​ ​ As of December 31, 2020 ​ Carrying Value ​ Gains ​ Losses ​ Fair Value U.S. Treasury securities and obligations of U.S. Government ​ $ 179,259 ​ $ 487 ​ $ — ​ $ 179,746 Corporate bonds ​ 214,666 ​ 5,086 ​ (384) ​ 219,368 Corporate bank loans ​ 53,650 ​ 3 ​ (871) ​ 52,782 Municipal bonds ​ 49,833 ​ 756 ​ (50) ​ 50,539 Mortgage-backed ​ 4,759 ​ 114 ​ (29) ​ 4,844 Total debt securities ​ 502,167 ​ 6,446 ​ (1,334) ​ 507,279 Total equity securities ​ 26,988 ​ 5,648 ​ (3,248) ​ 29,388 Total investments ​ $ 529,155 ​ $ 12,094 ​ $ (4,582) ​ $ 536,667 ​ Major categories of net investment gains (losses) on investments are summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ ​ 2021 2020 2021 2020 U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ (3) ​ $ — ​ $ (3) ​ Corporate bonds ​ 133 ​ 352 ​ 494 ​ 766 ​ Corporate bank loans ​ 14 ​ 66 ​ 105 ​ (19) ​ Municipal bonds ​ (18) ​ (25) ​ (12) ​ 1,397 ​ Equity securities ​ 930 ​ — ​ 4,701 ​ 3,471 ​ Gain on investments ​ 1,059 ​ 390 ​ 5,288 ​ 5,612 ​ Other-than-temporary impairments ​ ​ — ​ ​ (1,692) ​ ​ — ​ ​ (1,692) ​ Unrealized losses on other investments ​ — ​ (262) ​ — ​ (2,136) ​ Unrealized (losses) gains on equity investments ​ ​ (1,592) ​ ​ 937 ​ ​ 3,834 ​ ​ (29,683) ​ Investment (losses) gains, net ​ $ (533) ​ $ (627) ​ $ 9,122 ​ $ (27,899) ​ ​ We realized gross gains on investments of $1.1 million and $0.5 million during the three months ended September 30, 2021 and 2020, respectively and $5.8 million and $22.4 million for the nine months ended September 30, 2021 and 2020, respectively. We did not realize gross losses on investments for the three months ended September 30, 2021 and realized gross losses on investments of $0.1 million for the three months ended September 30, 2020. We realized gross losses on investments of $0.5 million and $16.8 million for the nine months ended September 30, 2021 and 2020, respectively. We recorded proceeds from the sale of investment securities of $1.1 million and $47.4 million during the three months ended September 30, 2021 and 2020, respectively and $16.9 million and $155.0 million for the nine months ended September 30, 2021 and 2020, respectively. Realized investment gains and losses are recognized in operations on the first in-first out method. The following schedules summarize the gross unrealized losses showing the length of time that investments have been continuously in an unrealized loss position as of September 30, 2021 and December 31, 2020 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of September 30, 2021 ​ ​ 12 months or less ​ Longer than 12 months ​ Total ​ ​ ​ Unrealized ​ ​ Unrealized ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Corporate bonds ​ — ​ — ​ 2,592 ​ (73) ​ 2,592 ​ (73) Corporate bank loans ​ 27,235 ​ (125) ​ 20,443 ​ (407) ​ 47,678 ​ (532) Municipal bonds ​ 4,000 ​ (57) ​ 999 ​ (11) ​ 4,999 ​ (68) Mortgage-backed ​ — ​ — ​ 11 ​ (4) ​ 11 ​ (4) Total debt securities ​ 31,235 ​ (182) ​ 24,045 ​ (495) ​ 55,280 ​ (677) Total equity securities ​ 9,514 ​ (335) ​ ​ 4,143 ​ ​ (1,580) ​ ​ 13,657 ​ (1,915) Total investments with unrealized losses ​ $ 40,749 ​ $ (517) ​ $ 28,188 ​ $ (2,075) ​ $ 68,937 ​ $ (2,592) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2020 ​ ​ 12 months or less ​ Longer than 12 months ​ Total ​ ​ ​ Unrealized ​ ​ Unrealized ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Corporate bonds ​ 7,801 ​ (186) ​ 3,556 ​ (198) ​ 11,357 ​ (384) Corporate bank loans ​ 45,233 ​ (559) ​ 4,144 ​ (312) ​ 49,377 ​ (871) Municipal bonds ​ 2,859 ​ (33) ​ 1,154 ​ (17) ​ 4,013 ​ (50) Mortgage-backed ​ 635 ​ (25) ​ 14 ​ (4) ​ 649 ​ (29) Total debt securities ​ 56,528 ​ (803) ​ 8,868 ​ (531) ​ 65,396 ​ (1,334) Total equity securities ​ 9,572 ​ (1,610) ​ 1,848 ​ (1,638) ​ 11,420 ​ (3,248) Total investments with unrealized losses ​ $ 66,100 ​ $ (2,413) ​ $ 10,716 ​ $ (2,169) ​ $ 76,816 ​ $ (4,582) ​ We had a total of 86 debt securities with an unrealized loss, of which 58 were in an unrealized loss position for less than one year and 28 were in an unrealized loss position for a period of one year or greater, as of September 30, 2021. We held a total of 81 debt securities with an unrealized loss, of which 64 were in an unrealized loss position for less than one year and 17 were in an unrealized loss position for a period of one year or greater, as of December 31, 2020. We consider these losses as a temporary decline in value as they are predominately on securities that we do not intend to sell and do not believe we will be required to sell prior to recovery of our amortized cost basis. The gross unrealized losses on the debt security positions at September 30, 2021 and December 31, 2020 were due predominately to market and interest rate fluctuations and we see no other indications that the decline in values of these securities is other-than-temporary. Based on evidence gathered through our normal credit evaluation process, we presently expect that all debt securities held in our investment portfolio will be paid in accordance with their contractual terms. Nonetheless, it is at least reasonably possible that the performance of certain issuers of these debt securities will be worse than currently expected resulting in future write-downs within our portfolio of debt securities. We complete a detailed analysis each quarter to assess whether any decline in the fair value of any debt security below cost is deemed other-than-temporary. All debt securities with an unrealized loss are reviewed. We recognize an impairment loss when a debt security’s value declines below cost, adjusted for accretion, amortization and previous other-than-temporary impairments and it is determined that the decline is other-than-temporary. We did not recognize any impairment loss on debt securities during the nine months ended September 30, 2021. We recognized $1.7 million of other-than-temporary impairment on debt securities during the nine months ended September 30, 2020. Debt Investments: We assess whether we intend to sell, or it is more likely than not that we will be required to sell, a fixed maturity investment before recovery of its amortized cost basis less any current period credit losses. For fixed maturity investments that are considered other-than-temporarily impaired and that we do not intend to sell and will not be required to sell, we separate the amount of the impairment into the amount that is credit related (credit loss component) and the amount due to all other factors. The credit loss component is recognized in earnings and is the difference between the investment’s amortized cost basis and the present value of its expected future cash flows. The remaining difference between the investment’s fair value and the present value of future expected cash flows is recognized in other comprehensive income. During the nine months ended September 30, 2021 we disposed of $0.6 million of previously impaired securities. During the nine months ended September 30, 2020, we did not dispose of any previously impaired securities. Equity Investments: Equity investments that are not consolidated or accounted for under the equity method of accounting with readily determinable fair values are not required to be evaluated for other-than-temporary-impairment. ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost Fair Value ​ ​ (in thousands) Due in one year or less ​ $ 125,303 ​ $ 126,261 Due after one year through five years ​ 114,399 ​ 116,086 Due after five years through ten years ​ 64,251 ​ 64,191 Due after ten years ​ 9,109 ​ 9,360 Mortgage-backed ​ 1,967 ​ 2,018 ​ ​ $ 315,029 ​ $ 317,916 ​

Pledged Investments

Pledged Investments	9 Months Ended
	Sep. 30, 2021
Pledged Investments [Abstract]
Pledged Investments	7 We have pledged certain of our securities for the benefit of various state insurance departments and reinsurers. These securities are included with our available-for-sale debt securities because we have the ability to trade these securities. We retain the interest earned on these securities. These securities had a carrying value of $30.8 million and $29.7 million at September 30, 2021 and December 31, 2020, respectively.

Reserves for Unpaid Losses and

Reserves for Unpaid Losses and Loss Adjustment Expenses	9 Months Ended
	Sep. 30, 2021
Reserves for Unpaid Losses and Loss Adjustment Expenses [Abstract]
Reserves for Unpaid Losses and Loss Adjustment Expenses	8. Reserves for Unpaid Losses and Loss Adjustment Expenses Year to-date activity in the consolidated reserves for unpaid losses and LAE is summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ September 30, ​ ​ ​ 2021 ​ 2020 ​ Balance at January 1 ​ $ 789,768 ​ $ 620,355 ​ Less reinsurance recoverable ​ 357,200 ​ 274,275 ​ Net balance at January 1 ​ 432,568 ​ 346,080 ​ ​ ​ ​ ​ ​ ​ ​ ​ Incurred related to: ​ ​ ​ Current year ​ 207,121 ​ 253,319 ​ Loss portfolio transfer ​ ​ — ​ ​ 21,700 ​ Prior years ​ 2,553 ​ 33,259 ​ Total incurred ​ 209,674 ​ 308,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ Paid related to: ​ ​ ​ Current year ​ 64,292 ​ 67,146 ​ Loss portfolio transfer ​ ​ — ​ ​ 21,700 ​ Prior years ​ 130,623 ​ 177,325 ​ Total paid ​ 194,915 ​ 266,171 ​ ​ ​ ​ ​ ​ ​ ​ ​ Net balance at September 30 ​ 447,327 ​ 388,187 ​ Plus reinsurance recoverable ​ 368,054 ​ 367,704 ​ Balance at September 30 ​ $ 815,381 ​ $ 755,891 ​ ​ The year to date impact from the unfavorable (favorable) net prior years’ loss development on each reporting segment is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ ​ 2021 2020 Specialty Commercial Segment ​ $ 533 ​ $ 23,961 Standard Commercial Segment ​ (2,336) ​ 2,350 Personal Segment ​ 4,356 ​ 6,948 Corporate ​ — ​ — Total unfavorable net prior year development ​ $ 2,553 ​ $ 33,259 ​ The following describes the primary factors behind each segment’s prior accident year reserve development for the nine months ended September 30, 2021 and 2020: Nine months ended September 30, 2021: ● Specialty Commercial Segment. Our Commercial Auto business unit experienced net favorable development in the 2020 and 2019 accident years primarily in the excess and primary commercial automobile liability lines of business, partially offset by net unfavorable development in both the primary and excess commercial automobile lines of business in the 2018 and prior accident years. Our E&S Casualty business unit experienced net unfavorable development primarily in our primary and excess liability line of business in the 2019 and prior accident years, partially offset by net favorable development in the 2020 accident year. We experienced net unfavorable development in our E&S Property and Aerospace & Programs business units. We experienced net favorable development in our Professional Liability business unit. ● Standard Commercial Segment. Our Commercial Accounts business unit experienced net favorable development for all lines of business in total, primarily due to net favorable development in our commercial auto liability and property lines of business in accident years 2020, 2016 and 2015, partially offset by net unfavorable development in the general liability lines of business in accident years 2019, 2018, 2017 and 2014 and prior accident years. The run-off from our former Workers Compensation operating unit experienced net favorable development in the 2015 and prior accident years. ● Personal Segment. Net unfavorable development in our Specialty Personal Lines business unit was driven predominately by unfavorable development attributable to the 2020 and 2019 accident years. Nine months ended September 30, 2020: ● Specialty Commercial Segment. Our Commercial Auto business unit experienced net unfavorable development in the 2018 and prior accident years both in the primary and excess commercial automobile liability lines of business, partially offset by net favorable development in the excess commercial automobile lines of business in the 2019 accident year. Our E&S Casualty business unit experienced net unfavorable development primarily in our primary liability line of business and our E&S package insurance products in the 2017, 2016, 2015 and 2013 and prior accident years, partially offset by net favorable development in the 2019, 2018 and 2014 accident years. We experienced net favorable development in our E&S Property and Professional Liability business units, partially offset by net unfavorable development in our Aerospace & Programs business unit. ● Standard Commercial Segment. Our Commercial Accounts business unit experienced net unfavorable development primarily in the general liability line of business in the 2018, 2017, 2016, 2015 and 2013 and prior accident years, partially offset by net favorable development in the 2019 and 2014 accident years primarily in the general liability line of business. Our Commercial Accounts business unit experienced net favorable development in the 2016 and 2015 accident years, partially offset by net unfavorable development in the 2017 and 2014 accident years in the occupational accident line of business. The run-off from our former Workers Compensation operating unit experienced net favorable development in the 2014 and prior accident years, partially offset by net unfavorable development in the 2015 accident year. ● Personal Segment. Net unfavorable development in our Specialty Personal Lines business unit was mostly attributable to the 2019, 2018, 2017 and 2016 accident years, partially offset by favorable development in the 2015 and prior accident years. The net development during the nine months ended September 30, 2020 was driven predominately by unfavorable development attributable to more recent treaty years where we retain a greater portion of the claims.

Share-based Payment Arrangement

Share-based Payment Arrangements	9 Months Ended
	Sep. 30, 2021
Share-Based Payment Arrangements [Abstract]
Share-Based Payment Arrangements	9. Share-Based Payment Arrangements Our 2005 Long Term Incentive Plan (“2005 LTIP”) is a stock compensation plan for key employees and non-employee directors that was initially approved by the shareholders on May 26, 2005 and expired by its terms on May 27, 2015. As of September 30, 2021, there were no outstanding incentive stock options and outstanding non-qualified stock options to purchase 14,157 shares of our common stock. The exercise price of all such outstanding stock options is equal to the fair market value of our common stock on the date of grant. Our 2015 Long Term Incentive Plan (“2015 LTIP”) was approved by shareholders on May 29, 2015. There are 2,000,000 shares authorized for issuance under the 2015 LTIP. As of September 30, 2021, restricted stock units representing the right to receive up to 84,744 shares of our common stock were outstanding under the 2015 LTIP. There were no stock option awards granted under the 2015 LTIP as of September 30, 2021. ​ Stock Options: A summary of the status of our stock options as of September 30, 2021 and changes during the nine months then ended is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Average ​ ​ ​ ​ ​ ​ ​ ​ ​ Remaining ​ Aggregate ​ ​ Number of ​ Weighted Average ​ Contractual ​ Intrinsic Value ​ Shares Exercise Price Term (Years) ($000) Outstanding at January 1, 2021 14,157 ​ $ 6.99 ​ Granted — ​ $ — ​ Exercised — ​ $ — ​ Forfeited or expired — ​ $ — ​ Outstanding at September 30, 2021 14,157 ​ $ 6.99 0.3 ​ $ — Exercisable at September 30, 2021 14,157 ​ $ 6.99 0.3 ​ $ — ​ The following table details the intrinsic value of options exercised, total cost of share-based payments charged against income before income tax benefit and the amount of related income tax benefit recognized in income for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ ​ 2021 2020 2021 2020 ​ Intrinsic value of options exercised ​ $ — ​ $ — ​ $ — ​ $ — ​ Cost of share-based payments (non-cash) ​ $ — ​ $ — ​ $ — ​ $ — ​ Income tax benefit of share-based payments recognized in income ​ $ — ​ $ — ​ $ — ​ $ — ​ ​ As of September 30, 2021, there was no unrecognized compensation cost related to non-vested stock options granted under our plans which is expected to be recognized in the future. The fair value of each stock option granted is estimated on the date of grant using the Black-Scholes option pricing model. Expected volatilities are based on the historical volatility of Hallmark’s and similar companies’ common stock for a period equal to the expected term. The risk-free interest rates for periods within the contractual term of the options are based on rates for U.S. Treasury Notes with maturity dates corresponding to the options expected lives on the dates of grant. Expected term is determined based on the simplified method as we do not have sufficient historical exercise data to provide a basis for estimating the expected term. There were no stock options granted during the first nine months of 2021 or 2020. Restricted Stock Units: Restricted stock units awarded under the 2015 LTIP represent the right to receive shares of common stock upon the satisfaction of vesting requirements, performance criteria and other terms and conditions. Restricted stock units vest and shares of common stock become issuable on March 31 of the third calendar year following the year of grant if performance criteria have been satisfied. The performance criteria for all restricted stock units require that we achieve certain compound average annual growth rates in book value per share as well as certain average combined ratio percentages over the vesting period in order to receive shares of common stock in amounts ranging from 50% to 150% of the number of restricted stock units granted. Grantees of restricted stock units do not have any rights of a stockholder, and do not participate in any distributions to our common stockholders, until the award fully vests upon satisfaction of the vesting schedule, performance criteria and other conditions set forth in their award agreement. Therefore, unvested restricted stock units are not considered participating securities under ASC 260, “Earnings Per Share” (Topic 260), and are not included in the calculation of basic or diluted earnings per share. Compensation cost is measured as an amount equal to the fair value of the restricted stock units on the date of grant and is expensed over the vesting period if achievement of the performance criteria is deemed probable, with the amount of the expense recognized based on our best estimate of the ultimate achievement level. The grant date fair value of restricted stock units granted in 2017, 2018 and 2019 was $10.20, $10.87 and $18.10 per unit, respectively. We incurred compensation expense of $4 thousand and $158 thousand related to restricted stock units during the three months and nine months ended September 30, 2021, respectively. We incurred compensation expense (benefit) of $154 thousand and ($416) thousand related to restricted stock units during the three months and nine months ended September 30, 2020, respectively. We recorded income tax benefit of $1 thousand and $33 thousand related to restricted stock units during the three months and nine months ended September 30, 2021, respectively. We recorded income tax benefit (expense) of $32 thousand and ($88) thousand related to restricted stock units during the three months and nine months ended September 30, 2020, respectively. ​ The following table details the status of our restricted stock units as of and for the nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of Restricted Stock Units ​ ​ 2021 2020 Nonvested at January 1 ​ 228,827 353,491 Granted ​ — — Vested ​ (30,309) (19,065) Forfeited ​ (142,022) (92,563) Nonvested at September 30 ​ 56,496 241,863 ​ As of September 30, 2021, there was $0.2 million of unrecognized grant date compensation cost related to unvested restricted stock units assuming compensation cost accrual at target achievement level. Based on the current performance estimate, we expect to recognize $95 thousand of compensation cost related to unvested restricted stock units, of which $48 thousand is expected to be recognized during the remainder of 2021 and $47 thousand is expected to be recognized in 2022.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2021
Segment Information [Abstract]
Segment Information	10. Segment Information The following is business segment information for the three and nine months ended September 30, 2021 and 2020 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ 2021 2020 2021 2020 ​ Revenues ​ ​ ​ ​ ​ ​ Specialty Commercial Segment ​ $ 62,493 ​ $ 83,749 ​ $ 196,982 ​ $ 262,761 ​ Standard Commercial Segment ​ 18,157 ​ 17,398 ​ 53,085 ​ 52,130 ​ Personal Segment ​ 18,316 ​ 20,513 ​ 56,390 ​ 65,300 ​ Corporate ​ (1,616) ​ (1,367) ​ 7,134 ​ (30,430) ​ Consolidated ​ $ 97,350 ​ $ 120,293 ​ $ 313,591 ​ $ 349,761 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pre-tax income (loss) ​ ​ ​ ​ ​ ​ Specialty Commercial Segment ​ $ 12,620 ​ $ (27,237) ​ $ 28,816 ​ $ (5,752) ​ Standard Commercial Segment ​ 1,957 ​ (1,672) ​ 347 ​ (154) ​ Personal Segment ​ (3,887) ​ (2,065) ​ (8,275) ​ (5,836) ​ Corporate ​ (6,299) ​ (6,818) ​ (6,280) ​ (90,742) ​ Consolidated ​ $ 4,391 ​ $ (37,792) ​ $ 14,608 ​ $ (102,484) ​ ​ The following is additional business segment information as of the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, Assets: ​ 2021 ​ 2020 Specialty Commercial Segment ​ $ 1,113,020 ​ $ 1,116,137 Standard Commercial Segment ​ 199,999 ​ 183,689 Personal Segment ​ 139,530 ​ 133,310 Corporate ​ 67,659 ​ 63,581 Consolidated ​ $ 1,520,208 ​ $ 1,496,717 ​

Reinsurance

Reinsurance	9 Months Ended
	Sep. 30, 2021
Reinsurance [Abstract]
Reinsurance	11. Reinsurance We reinsure a portion of the risk we underwrite in order to control the exposure to losses and to protect capital resources. We cede to reinsurers a portion of these risks and pay premiums based upon the risk and exposure of the policies subject to such reinsurance. Ceded reinsurance involves credit risk and is generally subject to aggregate loss limits. Although the reinsurer is liable to us to the extent of the reinsurance ceded, we are ultimately liable as the direct insurer on all risks reinsured. Reinsurance recoverables are reported after allowances for uncollectible amounts. We monitor the financial condition of reinsurers on an ongoing basis and review our reinsurance arrangements periodically. Reinsurers are selected based on their financial condition, business practices and the price of their product offerings. In order to mitigate credit risk to reinsurance companies, most of our reinsurance recoverable balance as of September 30, 2021 was with reinsurers that had an A.M. Best rating of “A–” or better. We also mitigate our credit risk for the remaining reinsurance recoverable by obtaining letters of credit. The following table shows earned premiums ceded and reinsurance loss recoveries by period (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ceded earned premiums $ 75,314 $ 83,287 $ 229,478 $ 257,312 Reinsurance recoveries $ 69,845 $ 66,395 $ 210,024 $ 222,067 ​ Loss Portfolio Transfer ​ On July 16, 2020, AHIC, HIC, HSIC, HCM and HNIC (collectively, the “Hallmark Insurers”), entered into a Loss Portfolio Transfer Reinsurance Contract to be effective as of January 1, 2020 (the “LPT Contract”) with DARAG Bermuda Ltd. (“DARAG Bermuda”) and DARAG Insurance (Guernsey) Limited (“DARAG Guernsey” and, collectively, the “Reinsurers”). The LPT Contract was consummated on July 31, 2020. The Company recorded a $21.7 million pre-tax loss during the third quarter of 2020 attributable to the closing of the LPT Contract. ​ Pursuant to the LPT Contract, (a) the Hallmark Insurers ceded to the Reinsurers all existing and future claims for losses occurring on or prior to December 31, 2019 on the binding primary commercial automobile liability insurance policies and the brokerage primary commercial automobile liability insurance policies issued by the Hallmark Insurers (the “Subject Business”) up to an aggregate limit of $240.0 million, with (i) the first layer of $151.2 million in reinsurance provided by DARAG Bermuda, (ii) the Hallmark Insurers retaining a loss corridor of the next $24.9 million in losses on the Subject Business, (iii) DARAG Bermuda reinsuring a second layer of $27.8 million above the first layer and the Hallmark Insurers’ loss corridor, and (iv) DARAG Guernsey reinsuring the top layer of $36.1 million in losses on the Subject Business, in each case net of third-party reinsurance and other recoveries; (b) the Hallmark Insurers will continue to manage and retain the benefit of other third-party reinsurance on the Subject Business; and (c) the Hallmark Insurers paid the Reinsurers a net reinsurance premium of $92.6 million. In connection with the closing, the parties also entered into a Services Agreement and a Trust Agreement. Pursuant to the Services Agreement, DARAG Bermuda assumed responsibility for certain administrative services, including claims handling, for the Subject Business. Pursuant to the Trust Agreement, the Reinsurers made initial cash deposits in the aggregate amount of $96.7 million into collateral trust accounts with The Bank of New York Mellon, as trustee, to be held as security for the Reinsurers’ obligations to the Hallmark Insurers under the LPT Contract. ​ As of September 30, 2021, the ultimate incurred losses from the subject business were $208.5 million or $32.4 million in excess of the Hallmark Insurers’ loss corridor. Our reinsurance recoverables of $515.1 million include $49.0 million related to the LPT Contract as of September 30, 2021.

Subordinated Debt Securities

Subordinated Debt Securities	9 Months Ended
	Sep. 30, 2021
Subordinated Debt Securities [Abstract]
Subordinated Debt Securities	12. Subordinated Debt Securities We issued trust preferred securities through Trust I and Trust II. These Delaware statutory trusts are sponsored and wholly-owned by Hallmark and each was created solely for the purpose of issuing the trust preferred securities. Each trust pays dividends on its preferred securities at the same rate each quarter as interest is paid on the junior subordinated debt securities. Under the terms of the junior subordinated debt securities, we pay interest only each quarter and the principal of each note at maturity. The subordinated debt securities of each trust are uncollateralized and do not require maintenance of minimum financial covenants. The following table summarizes the nature and terms of the junior subordinated debt and trust preferred securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Hallmark ​ ​ Hallmark ​ ​ Statutory ​ ​ Statutory ​ ​ ​ Trust I ​ ​ Trust II ​ ​ ​ ​ ​ ​ ​ Issue date ​ ​ June 21, 2005 ​ ​ August 23, 2007 Principal amount of trust preferred securities ​ $ 30,000 ​ $ 25,000 Principal amount of junior subordinated debt securities ​ $ 30,928 ​ $ 25,774 Maturity date of junior subordinated debt securities ​ ​ June 15, 2035 ​ ​ September 15, 2037 Trust common stock ​ $ 928 ​ $ 774 Interest rate, per annum ​ ​ Three Month LIBOR + 3.25% ​ ​ Three Month LIBOR + 2.90% Current interest rate at September 30, 2021 ​ ​ 3.37% ​ ​ 3.02% ​

Senior Unsecured Notes

Senior Unsecured Notes	9 Months Ended
	Sep. 30, 2021
Senior Unsecured Notes [Abstract]
Senior Unsecured Notes	13. Senior Unsecured Notes On August 19, 2019, Hallmark issued $50.0 million of senior unsecured notes (“Notes”) due August 15, 2029. Interest on the Notes accrues at the rate of 6.25% per annum and is payable semi-annually in arrears commencing February 15, 2020. The Notes are not obligations of or guaranteed by any of Hallmark’s subsidiaries and are not subject to any sinking fund requirements. At Hallmark’s option, the Notes are redeemable, in whole or in part, prior to the stated maturity subject to certain provisions intended to make the holders of the Notes whole on scheduled interest and principal payments. The indenture governing the Notes contains covenants which, among other things, restrict Hallmark’s ability to incur additional indebtedness, make certain payments, create liens on the stock of certain subsidiaries, dispose of certain assets, or merge or consolidate with other entities. The terms of the indenture prohibit payments or other distributions on any security of the Company that ranks junior to the Notes when the Company’s debt to capital ratio (as defined in the indenture) is greater than 35%. The Company’s debt to capital ratio was 37.2% as of September 30, 2021. ​ ​ ​

Deferred Policy Acquisition Cos

Deferred Policy Acquisition Costs	9 Months Ended
	Sep. 30, 2021
Deferred Policy Acquisition Costs [Abstract]
Deferred Policy Acquisition Costs	14. Deferred Policy Acquisition Costs The following table shows total deferred and amortized policy acquisition cost activity by period reported in operating expenses (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deferred $ (8,163) $ (20,939) $ (29,327) $ (45,342) Amortized ​ ​ 10,960 ​ ​ 21,684 ​ ​ 36,673 ​ ​ 45,971 Net $ 2,797 $ 745 $ 7,346 $ 629 ​

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings per Share	15. Earnings per Share The following table sets forth basic and diluted weighted average shares outstanding for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares - basic ​ 18,172 ​ ​ 18,142 ​ 18,162 ​ ​ 18,136 Effect of dilutive securities ​ — ​ ​ — ​ — ​ ​ — Weighted average shares - assuming dilution ​ 18,172 ​ ​ 18,142 ​ 18,162 ​ ​ 18,136 ​ For the three months and nine months ended September 30, 2021 and 2020, 14,157 shares of common stock potentially issuable upon the exercise of employee stock options were excluded from the weighted average number of shares outstanding on a diluted basis because the effect of such options would be anti-dilutive.

Net Periodic Pension Cost

Net Periodic Pension Cost	9 Months Ended
	Sep. 30, 2021
Net Periodic Pension Cost [Abstract]
Net Periodic Pension Cost	16. Net Periodic Pension Cost The following table details the net periodic pension cost incurred by period (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 Interest cost $ 67 $ 89 $ 202 $ 266 Amortization of net loss ​ ​ 43 ​ ​ 34 ​ ​ 130 ​ ​ 104 Expected return on plan assets ​ ​ (177) ​ ​ (171) ​ ​ (531) ​ ​ (513) Net periodic pension cost $ (67) $ (48) $ (199) $ (143) Contributed amount $ — $ — $ — $ — ​ Refer to Note 15 to the consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2020 for more discussion of our retirement plans.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Taxes [Abstract]
Income Taxes	17. Income Taxes Our effective income tax rate for the nine months ended September 30, 2021 and 2020 was 20.8% and 15.6%, respectively. The effective tax rate for the nine months ended September 30, 2021 varied from the statutory tax rates primarily due to tax exempt interest. The effective tax rate for the nine months ended September 30, 2020 varied from the statutory tax rates primarily due to the non-deductible impairment of goodwill and indefinite-lived intangible assets. We concluded that no valuation allowance was necessary against our deferred tax assets as of September 30, 2021 and December 31, 2020. ​

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2021
Supplemental Cash Flow Information [Abstract]
Supplemental Cash Flow Information	18. Supplemental Cash Flow Information The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the consolidated balance sheet to the total of the same such amounts shown in the statement of cash flows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ As of September 30, ​ 2021 2020 ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents $ 325,833 $ 186,683 Restricted cash ​ ​ 3,793 ​ ​ 17,671 Total cash, cash equivalents and restricted cash shown in the statement of cash flows $ 329,626 $ 204,354 ​ Restricted cash represents amounts required to be set aside by a contractual agreement with a third-party insurer and amounts pledged for the benefit of various state insurance departments. The following table provides supplemental cash flow information for the nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest paid $ 3,165 $ 4,845 ​ ​ ​ ​ ​ ​ ​ Income taxes (recovered) paid ​ $ (4,147) ​ $ 654 ​ ​ ​ ​ ​ ​ ​ Supplemental schedule of non-cash investing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Receivable for securities related to investment disposals $ 5,613 $ 1,568 ​ ​ ​ ​ ​ ​ ​ Payable for securities related to investment purchases $ 1,047 $ 507 ​

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies [Abstract]
Commitments and Contingencies	19. Commitments and Contingencies ​ On May 5, 2020, a lawsuit styled Schulze v. Hallmark Financial Services, Inc., et al. (Case No. 3:20-cv-01130) was filed in the U.S. District Court for the Northern District of Texas, Dallas Division (the “Schulze Matter”). The Company, its former Chief Executive Officer and its former Chief Financial Officer are named defendants in the lawsuit brought on behalf of a putative class of shareholders who acquired Hallmark securities between March 5, 2019 and March 17, 2020. In general, the complaint alleges that the defendants violated the Securities Exchange Act of 1934 by failing to disclose that (a) the Company lacked effective internal controls over financial reporting related to its reserves for unpaid losses, (b) the Company improperly accounted for reserves for unpaid losses, (c) the Company would be forced to report $63.8 million of prior year net adverse loss development, (d) the Company would exit the contract binding line of its commercial automobile primary insurance business, and by making positive statements about the Company’s business, operations and prospects that were allegedly materially misleading and/or lacked a reasonable basis. On July 21, 2020, the court appointed Rajeev Yalamanchili as Lead Plaintiff. Lead Plaintiff filed an Amended Complaint on September 30, 2020. support of his opposition to the motion to dismiss. Lead Plaintiff chose not to file a second amended complaint. On September 24, 2021, Lead Plaintiff and Defendants filed a Joint Stipulation seeking dismissal of the case with prejudice, with each side bearing its own attorneys’ fees and costs. No consideration has been given, offered, or promised to Lead Plaintiff or his counsel in connection with this dismissal. The Court terminated the case pursuant to the Joint Stipulation. ​ As of September 30, 2021, we were engaged in various other legal proceedings in the ordinary course of business, none of which, either individually or in the aggregate, are believed likely to have a material adverse effect on our consolidated financial position or results of operations, in the opinion of management. The various other legal proceedings to which we were a party are routine in nature and incidental to our business. From time to time, assessments are levied on us by the guaranty association of the states where we offer our insurance products. Such assessments are made primarily to cover the losses of policyholders of insolvent or rehabilitated insurers. Since these assessments can generally be recovered through a reduction in future premium taxes paid, we capitalize the assessments that can be recovered as they are paid and amortize the capitalized balance against our premium tax expense. We did no t pay an assessment during the first nine months of 2021 or 2020. ​

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive (Loss) Income Balances	9 Months Ended
	Sep. 30, 2021
Changes in Accumulated Other Comprehensive (Loss) Income Balances [Abstract]
Changes in Accumulated Other Comprehensive (Loss) Income Balances	20. Changes in Accumulated Other Comprehensive (Loss) Income Balances The changes in accumulated other comprehensive (loss) income balances as of September 30, 2021 and 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated Other ​ ​ Pension ​ Unrealized ​ Comprehensive ​ Liability Gains (Loss) Income (Loss) Balance at January 1, 2020 ​ $ (3,239) ​ $ 3,927 ​ $ 688 Other comprehensive loss: ​ ​ ​ ​ ​ ​ ​ ​ Change in net actuarial gain ​ 104 ​ — ​ 104 Tax effect on change in net actuarial gain ​ (22) ​ — ​ (22) Unrealized holding gains arising during the period ​ — ​ 4,149 ​ 4,149 Tax effect on unrealized holding gains arising during the period ​ — ​ (872) ​ (872) Reclassification adjustment for gains included in net income ​ — ​ (5,612) ​ (5,612) Tax effect on reclassification adjustment for gains included in net income ​ — ​ 1,179 ​ 1,179 Other comprehensive loss, net of tax ​ 82 ​ (1,156) ​ (1,074) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at September 30, 2020 ​ $ (3,157) ​ $ 2,771 ​ $ (386) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at January 1, 2021 ​ $ (3,762) ​ $ 4,145 ​ $ 383 Other comprehensive loss: ​ ​ ​ Change in net actuarial gain ​ 130 ​ — ​ 130 Tax effect on change in net actuarial gain ​ (27) ​ — ​ (27) Unrealized holding gains arising during the period ​ — ​ 3,063 ​ 3,063 Tax effect on unrealized holding gains arising during the period ​ — ​ (643) ​ (643) Reclassification adjustment for gains included in net income ​ — ​ (5,288) ​ (5,288) Tax effect on reclassification adjustment for gains included in net income ​ — ​ 1,110 ​ 1,110 Other comprehensive loss, net of tax ​ 103 ​ (1,758) ​ (1,655) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at September 30, 2021 ​ $ (3,659) ​ $ 2,387 ​ $ (1,272) ​

Leases

Leases	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Leases	​ 21. Leases Right-of-use assets are included in the other assets line item and lease liabilities are included in the other liabilities line item of the consolidated balance sheet. We determine if a contract contains a lease at inception and recognize operating lease right-of-use assets and operating lease liabilities based on the present value of the future minimum lease payments at the commencement date. Since our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of future payments. Lease agreements have lease and non-lease components, which are accounted for as a single lease component. Lease expense is recognized on a straight-line basis over the lease term. The Company’s operating lease obligations predominately pertain to office leases utilized in the operation of our business. Our leases have remaining terms of 1 to 13 years, some of which include options to extend the leases. The components of lease expense and other lease information as of and during the three and nine month periods ended September 30, 2021 and 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Nine Months Ended ​ ​ September 30, ​ September 30, ​ September 30, ​ September 30, ​ 2021 ​ 2020 2021 ​ 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease cost ​ $ 526 ​ ​ $ 750 ​ ​ $ 1,620 ​ ​ $ 2,291 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash paid for amounts included in the measurement of lease liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating cash flows from operating leases ​ $ 543 ​ ​ $ 758 ​ ​ $ 1,627 ​ ​ $ 1,749 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Right-of-use assets obtained in exchange for new operating lease liabilities ​ $ — ​ ​ $ — ​ ​ $ 436 ​ ​ $ — ​ ​ Other lease information as of September 30, 2021 and December 31, 2020 are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 ​ ​ ​ ​ ​ ​ ​ Operating lease right-of-use assets ​ $ 13,501 ​ $ 13,986 ​ ​ ​ ​ ​ ​ ​ Operating lease liabilities ​ $ 15,369 ​ $ 15,862 ​ ​ ​ ​ ​ ​ ​ Weighted-average remaining lease term - operating leases ​ ​ 11.6 ​ ​ 10.2 ​ ​ ​ ​ ​ ​ ​ Weighted-average discount rate - operating leases ​ ​ 6.22% ​ ​ 5.88% ​ ​ ​ ​ ​ We incurred $0.2 million in short-term lease payments not included in our lease liability during the nine months ended September 30, 2021. ​ Future minimum lease payments under non-cancellable leases as of September 30, 2021 and December 31, 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 ​ 2020 ​ ​ ​ ​ ​ ​ ​ 2021 ​ $ 544 ​ $ 2,172 2022 ​ ​ 2,171 ​ ​ 2,171 2023 ​ ​ 2,023 ​ ​ 1,885 2024 ​ ​ 2,216 ​ ​ 1,941 2025 ​ ​ 2,450 ​ ​ 1,975 Thereafter ​ ​ 18,264 ​ ​ 11,350 Total future minimum lease payments ​ $ 27,668 ​ $ 21,494 ​ ​ ​ ​ ​ ​ ​ Less imputed interest ​ $ (12,299) ​ $ (5,632) Total operating lease liability ​ $ 15,369 ​ $ 15,862 ​

Basis of Presentation (Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2021
Basis of Presentation [Abstract]
Use of Estimates in the Preparation of the Financial Statements	Use of Estimates in the Preparation of the Financial Statements Our preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect our reported amounts of assets and liabilities and our disclosure of contingent assets and liabilities at the date of our consolidated financial statements, as well as our reported amounts of revenues and expenses during the reporting period. Refer to “Critical Accounting Estimates and Judgments” under Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2020 for information on accounting policies that we consider critical in preparing our consolidated financial statements. Actual results could differ materially from those estimates.
Fair Value of Financial Instruments	Fair Value of Financial Instruments Fair value estimates are made at a point in time based on relevant market data as well as the best information available about the financial instruments. Fair value estimates for financial instruments for which no or limited observable market data is available are based on judgments regarding current economic conditions, credit and interest rate risk. These estimates involve significant uncertainties and judgments and cannot be determined with precision. As a result, such calculated fair value estimates may not be realizable in a current sale or immediate settlement of the instrument. In addition, changes in the underlying assumptions used in the fair value measurement technique, including discount rate and estimates of future cash flows, could significantly affect these fair value estimates. Cash and Cash Equivalents Restricted Cash Senior Unsecured Notes Due 2029 Subordinated Debt Securities For reinsurance balances, premiums receivable, federal income tax recoverable, other assets and other liabilities, the carrying amounts approximate fair value because of the short maturity of such financial instruments.
Variable Interest Entities	Variable Interest Entities On June 21, 2005, we formed Hallmark Statutory Trust I (“Trust I”), an unconsolidated trust subsidiary, for the sole purpose of issuing $30.0 million in trust preferred securities. Trust I used the proceeds from the sale of these securities and our initial capital contribution to purchase $30.9 million of subordinated debt securities from Hallmark. The debt securities are the sole assets of Trust I, and the payments under the debt securities are the sole revenues of Trust I. On August 23, 2007, we formed Hallmark Statutory Trust II (“Trust II”), an unconsolidated trust subsidiary, for the sole purpose of issuing $25.0 million in trust preferred securities. Trust II used the proceeds from the sale of these securities and our initial capital contribution to purchase $25.8 million of subordinated debt securities from Hallmark. The debt securities are the sole assets of Trust II, and the payments under the debt securities are the sole revenues of Trust II. We evaluate on an ongoing basis our investments in Trust I and Trust II (collectively the “Trusts”) and have determined that we do not have a variable interest in the Trusts. Therefore, the Trusts are not included in our consolidated financial statements. ​
Income Taxes	Income Taxes We file a consolidated federal income tax return. Deferred federal income taxes reflect the future tax consequences of differences between the tax basis of assets and liabilities and their financial reporting amounts at each year end. Deferred taxes are recognized using the liability method, whereby tax rates are applied to cumulative temporary differences based on when and how they are expected to affect the tax return. Deferred tax assets and liabilities are adjusted for tax rate changes in effect for the year in which these temporary differences are expected to be recovered or settled. Net deferred tax assets are held at their net realizable value and an allowance is taken as needed. The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. There were no uncertain tax positions at September 30, 2021.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In December 2019, the FASB released ASU 2019-12, Simplifying the Accounting for Income Taxes. Recently Issued Accounting Pronouncements In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform ("ASU 2020-04"). ASU 2020-04 provides optional guidance for a limited period of time to ease potential accounting impact associated with transitioning away from reference rates that are expected to be discontinued, such as the London Interbank Offered Rate ("LIBOR"). The amendments in this ASU apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued. The amendments in ASU 2020-04 could be adopted as of March 12, 2020 and are effective December 31, 2022. We do not currently have any contracts that have been changed to a new reference rate, but we will continue to evaluate our contracts and the effects of this standard on our condensed consolidated financial statements prior to adoption. In June 2016, the FASB issued ASU 2016-13, “Measurement of Credit Losses on Financial Instruments” (Topic 326). ASU 2016-13 requires organizations to estimate credit losses on certain types of financial instruments, including receivables and available-for-sale debt securities, by introducing an approach based on expected losses. The expected loss approach will require entities to incorporate considerations of historical information, current information and reasonable and supportable forecasts. As a smaller reporting company, ASU 2016-13 is effective for fiscal years of the Company beginning after December 15, 2022, including interim periods within those fiscal years. ASU 2016-13 requires a modified retrospective transition method and early adoption is permitted. We are currently evaluating the impact that the adoption of this standard will have on our financial results and disclosures.

Revision of Previously Issued_2

Revision of Previously Issued Consolidated Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2021
Revision of Previously Issued Consolidated Financial Statements [Abstract]
Schedule of effect of the correction on our previously reported Consolidated Statements of Operations, Balance Sheets and Cash Flows	​ Consolidated Statements of Operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended September 30, ​ Nine months ended September 30, ​ ​ 2020 ​ 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Ceded premiums written ​ $ (80,353) ​ $ (3,055) ​ $ (83,408) ​ $ (230,094) ​ $ (9,173) ​ $ (239,267) Net premiums written ​ 116,111 ​ (3,055) ​ 113,056 ​ 351,603 ​ (9,173) ​ 342,430 Change in unearned premiums ​ ​ 3,449 ​ ​ 215 ​ ​ 3,664 ​ ​ 17,486 ​ ​ 2,101 ​ ​ 19,587 Net premiums earned ​ 119,560 ​ (2,840) ​ 116,720 ​ 369,089 ​ (7,072) ​ 362,017 Total revenues ​ 123,133 ​ (2,840) ​ 120,293 ​ 356,833 ​ (7,072) ​ 349,761 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Losses and loss adjustment expenses ​ ​ 124,253 ​ ​ (1,698) ​ ​ 122,555 ​ ​ 312,531 ​ ​ (4,253) ​ ​ 308,278 Operating expenses ​ 34,296 ​ (656) ​ 33,640 ​ 93,703 ​ (1,644) ​ 92,059 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) income before tax ​ $ (37,306) ​ $ (486) ​ $ (37,792) ​ $ (101,309) ​ $ (1,175) ​ $ (102,484) Income tax expense ​ (9,302) ​ (102) ​ (9,404) ​ (15,696) ​ (247) ​ (15,943) Net loss ​ $ (28,004) ​ $ (384) ​ $ (28,388) ​ $ (85,613) ​ $ (928) ​ $ (86,541) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common stockholders net income per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic ​ $ (1.54) ​ $ (0.02) ​ $ (1.56) ​ $ (4.72) ​ $ (0.05) ​ $ (4.77) Diluted ​ $ (1.54) ​ $ (0.02) ​ $ (1.56) ​ $ (4.72) ​ $ (0.05) ​ $ (4.77) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended December 31, ​ For the year ended December 31, ​ ​ 2019 ​ 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Ceded premiums written ​ $ (347,279) ​ $ (5,978) ​ $ (353,257) ​ $ (304,395) ​ $ (10,640) ​ $ (315,035) Net premiums written ​ 496,552 ​ (5,978) ​ 490,574 ​ 438,973 ​ (10,640) ​ 428,333 Change in unearned premiums ​ ​ (59,675) ​ ​ 3,393 ​ ​ (56,282) ​ ​ 42,825 ​ ​ 743 ​ ​ 43,568 Net premiums earned ​ 436,877 ​ (2,585) ​ 434,292 ​ 481,798 ​ (9,897) ​ 471,901 Total revenues ​ 486,371 ​ (2,585) ​ 483,786 ​ 478,745 ​ (9,897) ​ 468,848 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Losses and loss adjustment expenses ​ ​ 362,165 ​ ​ (1,619) ​ ​ 360,546 ​ ​ 412,851 ​ ​ (5,944) ​ ​ 406,907 Operating expenses ​ 117,357 ​ (325) ​ 117,032 ​ 126,266 ​ (2,347) ​ 123,919 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) income before tax ​ $ (1,032) ​ $ (642) ​ $ (1,674) ​ $ (114,162) ​ $ (1,606) ​ $ (115,768) Income tax expense ​ (407) ​ (135) ​ (542) ​ (22,507) ​ 1,090 ​ (21,417) Net loss ​ $ (625) ​ $ (507) ​ $ (1,132) ​ $ (91,655) ​ $ (2,696) ​ $ (94,351) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common stockholders net income per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic ​ $ (0.03) ​ $ (0.03) ​ $ (0.06) ​ $ (5.05) ​ $ (0.15) ​ $ (5.20) Diluted ​ $ (0.03) ​ $ (0.03) ​ $ (0.06) ​ $ (5.05) ​ $ (0.15) ​ $ (5.20) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ Three months ended June 30, ​ Six months ended June 30, ​ ​ 2021 ​ 2021 ​ 2021 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised reported Revisions As revised Ceded premiums written ​ $ (69,871) ​ $ (1,650) ​ $ (71,521) ​ $ (80,582) ​ $ (1,648) ​ $ (82,230) ​ $ (150,453) ​ $ (3,298) ​ $ (153,751) Net premiums written ​ 93,147 ​ (1,650) ​ 91,497 ​ 89,134 ​ (1,648) ​ 87,486 ​ 182,281 ​ (3,298) ​ 178,983 Change in unearned premiums ​ ​ 11,071 ​ ​ (716) ​ ​ 10,355 ​ ​ 9,477 ​ ​ (379) ​ ​ 9,098 ​ ​ 20,548 ​ ​ (1,095) ​ ​ 19,453 Net premiums earned ​ 104,218 ​ (2,366) ​ 101,852 ​ 98,611 ​ (2,027) ​ 96,584 ​ 202,829 ​ (4,393) ​ 198,436 Total revenues ​ 114,419 ​ (2,366) ​ 112,053 ​ 106,215 ​ (2,027) ​ 104,188 ​ 220,634 ​ (4,393) ​ 216,241 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Losses and loss adjustment expenses ​ ​ 70,903 ​ ​ (1,424) ​ ​ 69,479 ​ ​ 77,719 ​ ​ (1,230) ​ ​ 76,489 ​ ​ 148,622 ​ ​ (2,654) ​ ​ 145,968 Operating expenses ​ 30,441 ​ (468) ​ 29,973 ​ 27,653 ​ (319) ​ 27,334 ​ 58,094 ​ (787) ​ 57,307 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) income before tax ​ $ 11,700 ​ $ (473) ​ $ 11,227 ​ $ (532) ​ $ (478) ​ $ (1,010) ​ $ 11,168 ​ $ (951) ​ $ 10,217 Income tax expense ​ 2,355 ​ (99) ​ 2,256 ​ (65) ​ (100) ​ (165) ​ 2,290 ​ (199) ​ 2,091 Net loss ​ $ 9,345 ​ $ (374) ​ $ 8,971 ​ $ (467) ​ $ (378) ​ $ (845) ​ $ 8,878 ​ $ (752) ​ $ 8,126 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common stockholders net income per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic ​ $ 0.52 ​ $ (0.03) ​ $ 0.49 ​ $ (0.03) ​ $ (0.02) ​ $ (0.05) ​ $ 0.49 ​ $ (0.04) ​ $ 0.45 Diluted ​ $ 0.52 ​ $ (0.03) ​ $ 0.49 ​ $ (0.03) ​ $ (0.02) ​ $ (0.05) ​ $ 0.49 ​ $ (0.04) ​ $ 0.45 ​ ​ ​ ​ ​ ​ Consolidated Balance Sheets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ December 31, ​ 2019 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Ceded unearned premiums ​ $ 164,221 ​ $ 3,777 ​ $ 167,998 ​ $ 138,926 ​ $ 4,520 ​ $ 143,446 Reinsurance recoverable ​ 315,466 ​ ​ 1,671 ​ ​ 317,137 ​ 490,231 ​ ​ 7,615 ​ ​ 497,846 Federal income tax recoverable ​ 8,995 ​ ​ 139 ​ ​ 9,134 ​ 25,642 ​ ​ (951) ​ ​ 24,691 Total assets ​ 1,495,274 ​ ​ 5,587 ​ ​ 1,500,861 ​ 1,485,533 ​ ​ 11,184 ​ ​ 1,496,717 Reinsurance payable ​ 59,274 ​ ​ 6,107 ​ ​ 65,381 ​ 46,700 ​ ​ 14,400 ​ ​ 61,100 Total liabilities ​ ​ 1,231,992 ​ ​ 6,107 ​ ​ 1,238,099 ​ ​ 1,314,611 ​ ​ 14,400 ​ ​ 1,329,011 Retained earnings ​ 160,570 ​ ​ (521) ​ ​ 160,049 ​ 68,915 ​ ​ (3,216) ​ ​ 65,699 Total stockholders' equity ​ ​ 263,282 ​ ​ (521) ​ ​ 262,761 ​ ​ 170,922 ​ ​ (3,216) ​ ​ 167,706 Total liabilities and stockhoders' equity ​ ​ 1,495,274 ​ ​ 5,586 ​ ​ 1,500,860 ​ ​ 1,485,533 ​ ​ 11,184 ​ ​ 1,496,717 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ March 31, ​ June 30, ​ 2020 2021 2021 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised reported Revisions As revised Ceded unearned premiums ​ $ 144,075 ​ $ 2,101 ​ $ 146,176 ​ $ 134,206 ​ $ 3,804 ​ $ 138,010 ​ $ 139,609 ​ $ 3,425 ​ $ 143,034 Reinsurance recoverable ​ 504,472 ​ ​ 4,253 ​ ​ 508,725 ​ 494,815 ​ ​ 9,039 ​ ​ 503,854 ​ 494,473 ​ ​ 10,269 ​ ​ 504,742 Federal income tax recoverable ​ 19,748 ​ ​ 247 ​ ​ 19,995 ​ 23,855 ​ ​ (852) ​ ​ 23,003 ​ 20,025 ​ ​ (751) ​ ​ 19,274 Total assets ​ 1,497,507 ​ ​ 6,601 ​ ​ 1,504,108 ​ 1,517,543 ​ ​ 11,991 ​ ​ 1,529,534 ​ 1,506,694 ​ ​ 12,943 ​ ​ 1,519,637 Reinsurance payable ​ 67,346 ​ ​ 7,529 ​ ​ 74,875 ​ 51,673 ​ ​ 15,582 ​ ​ 67,255 ​ 51,921 ​ ​ 16,911 ​ ​ 68,832 Total liabilities ​ ​ 1,321,328 ​ ​ 7,529 ​ ​ 1,328,857 ​ ​ 1,337,791 ​ ​ 15,582 ​ ​ 1,353,373 ​ ​ 1,327,810 ​ ​ 16,911 ​ ​ 1,344,721 Retained earnings ​ 74,957 ​ ​ (928) ​ ​ 74,029 ​ 78,260 ​ ​ (3,592) ​ ​ 74,668 ​ 77,793 ​ ​ (3,968) ​ ​ 73,825 Total stockholders' equity ​ ​ 176,179 ​ ​ (928) ​ ​ 175,251 ​ ​ 179,752 ​ ​ (3,592) ​ ​ 176,160 ​ ​ 178,884 ​ ​ (3,968) ​ ​ 174,916 Total liabilities and stockhoders' equity ​ ​ 1,497,507 ​ ​ 6,601 ​ ​ 1,504,108 ​ ​ 1,517,543 ​ ​ 11,990 ​ ​ 1,529,533 ​ ​ 1,506,694 ​ ​ 12,943 ​ ​ 1,519,637 ​ Consolidated Statements of Cash Flows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the year ended December 31, ​ For the year ended December 31, ​ For the nine months ended September 30, ​ ​ 2019 ​ 2020 ​ 2020 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised reported Revisions As revised Net income ​ $ (625) ​ $ (507) ​ $ (1,132) ​ $ (91,655) ​ $ (2,696) ​ $ (94,351) ​ $ (85,613) ​ $ (928) ​ $ (86,541) Change in reinsurance payable ​ (8,054) ​ 5,654 ​ (2,400) ​ (12,574) ​ 8,293 ​ (4,281) ​ 8,072 ​ 7,529 ​ 15,601 Change in reinsurance recoverable ​ (63,437) ​ (1,619) ​ (65,056) ​ (174,765) ​ (5,944) ​ (180,709) ​ (189,006) ​ (4,253) ​ (193,259) Change in ceded unearned premiums ​ (31,190) ​ (3,393) ​ (34,583) ​ 25,295 ​ (743) ​ 24,552 ​ 20,146 ​ (2,101) ​ 18,045 Change in federal income tax recoverable ​ (8,999) ​ (135) ​ (9,134) ​ (16,647) ​ 1,090 ​ (15,557) ​ (10,753) ​ (247) ​ (11,000) Net cash provided by (used in) operating activities ​ $ 27,670 ​ $ — ​ $ 27,670 ​ $ (69,327) ​ $ — ​ $ (69,327) ​ $ (62,895) ​ $ — ​ $ (62,895) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the three months ended March 31, ​ For the six months ended June 30, ​ ​ 2021 ​ 2021 ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ As previously ​ ​ ​ ​ ​ ​ ​ reported Revisions As revised reported Revisions As revised Net income ​ $ 9,345 ​ $ (374) ​ $ 8,971 ​ $ 8,878 ​ $ (752) ​ $ 8,126 Change in reinsurance payable ​ 4,973 ​ 1,182 ​ 6,155 ​ 5,221 ​ 2,510 ​ 7,731 Change in reinsurance recoverable ​ (4,584) ​ (1,424) ​ (6,008) ​ (4,242) ​ (2,653) ​ (6,895) Change in ceded unearned premiums ​ 4,720 ​ 716 ​ 5,436 ​ (683) ​ 1,094 ​ 411 Change in federal income tax payable (recoverable) ​ 1,787 ​ (100) ​ 1,687 ​ 5,617 ​ (200) ​ 5,417 Net cash provided by (used in) operating activities ​ $ 29,476 ​ $ — ​ $ 29,476 ​ $ 28,899 ​ $ — ​ $ 28,899

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value [Abstract]
Fair Value, Assets Measured on Recurring Basis	The following table presents, for each of the fair value hierarchy levels, assets that are measured at fair value on a recurring basis at September 30, 2021 and December 31, 2020 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of September 30, 2021 ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Identical Assets ​ Other Observable ​ Unobservable ​ ​ ​ ​ (Level 1) Inputs (Level 2) Inputs (Level 3) Total U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ 66,496 ​ $ — ​ $ 66,496 Corporate bonds ​ — ​ 121,741 ​ 356 ​ 122,097 Corporate bank loans ​ — ​ 86,334 ​ — ​ 86,334 Municipal bonds ​ — ​ 40,971 ​ — ​ 40,971 Mortgage-backed ​ — ​ 2,018 ​ — ​ 2,018 Total debt securities ​ — ​ 317,560 ​ 356 ​ 317,916 Total equity securities ​ 45,362 ​ — ​ — ​ 45,362 Total investments ​ $ 45,362 ​ $ 317,560 ​ $ 356 ​ $ 363,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2020 ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Identical Assets ​ Other Observable ​ Unobservable ​ ​ ​ ​ (Level 1) Inputs (Level 2) Inputs (Level 3) Total U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ 179,746 ​ $ — ​ $ 179,746 Corporate bonds ​ — ​ 219,020 ​ 348 ​ 219,368 Corporate bank loans ​ — ​ 52,782 ​ — ​ 52,782 Municipal bonds ​ — ​ 50,539 ​ — ​ 50,539 Mortgage-backed ​ — ​ 4,844 ​ — ​ 4,844 Total debt securities ​ — ​ 506,931 ​ 348 ​ 507,279 Total equity securities ​ 29,388 ​ — ​ — ​ 29,388 Total investments ​ $ 29,388 ​ $ 506,931 ​ $ 348 ​ $ 536,667
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table summarizes the changes in fair value for all financial assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the nine months ended September 30, 2021 and 2020 (in thousands): ​ ​ ​ ​ Beginning balance as of January 1, 2021 $ 348 Sales ​ — Settlements ​ — Purchases ​ — Issuances ​ — Total realized/unrealized losses included in net income ​ — Net gain included in other comprehensive income ​ 8 Transfers into Level 3 ​ — Transfers out of Level 3 ​ — Ending balance as of September 30, 2021 ​ $ 356 ​ ​ ​ ​ ​ Beginning balance as of January 1, 2020 $ 339 Sales ​ — Settlements ​ — Purchases ​ — Issuances ​ — Total realized/unrealized gains included in net loss ​ — Net gains included in other comprehensive loss ​ (14) Transfers into Level 3 ​ — Transfers out of Level 3 ​ — Ending balance as of September 30, 2020 ​ $ 325

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2021
Investments [Abstract]
Amortized Cost/Carrying Value and Estimated Fair Value of Investments in Debt and Equity Securities by Category	The amortized cost/carrying value and estimated fair value of investments in debt and equity securities by category is as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Gross ​ ​ ​ ​ ​ Amortized Cost/ ​ Unrealized ​ Unrealized ​ ​ ​ ​ Carrying Value Gains Losses Fair Value As of September 30, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury securities and obligations of U.S. Government ​ $ 66,354 ​ $ 142 ​ $ — ​ $ 66,496 Corporate bonds ​ 119,341 ​ 2,829 ​ (73) ​ 122,097 Corporate bank loans ​ 86,749 ​ 117 ​ (532) ​ 86,334 Municipal bonds ​ 40,618 ​ 421 ​ (68) ​ 40,971 Mortgage-backed ​ 1,967 ​ 55 ​ (4) ​ 2,018 Total debt securities ​ 315,029 ​ 3,564 ​ (677) ​ 317,916 Total equity securities ​ 39,129 ​ 8,148 ​ (1,915) ​ 45,362 Total investments ​ $ 354,158 ​ $ 11,712 ​ $ (2,592) ​ $ 363,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ Amortized Cost/ ​ Unrealized ​ Unrealized ​ ​ ​ As of December 31, 2020 ​ Carrying Value ​ Gains ​ Losses ​ Fair Value U.S. Treasury securities and obligations of U.S. Government ​ $ 179,259 ​ $ 487 ​ $ — ​ $ 179,746 Corporate bonds ​ 214,666 ​ 5,086 ​ (384) ​ 219,368 Corporate bank loans ​ 53,650 ​ 3 ​ (871) ​ 52,782 Municipal bonds ​ 49,833 ​ 756 ​ (50) ​ 50,539 Mortgage-backed ​ 4,759 ​ 114 ​ (29) ​ 4,844 Total debt securities ​ 502,167 ​ 6,446 ​ (1,334) ​ 507,279 Total equity securities ​ 26,988 ​ 5,648 ​ (3,248) ​ 29,388 Total investments ​ $ 529,155 ​ $ 12,094 ​ $ (4,582) ​ $ 536,667
Major Categories of Net Investment Gains (Losses) on Investments	Major categories of net investment gains (losses) on investments are summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ ​ 2021 2020 2021 2020 U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ (3) ​ $ — ​ $ (3) ​ Corporate bonds ​ 133 ​ 352 ​ 494 ​ 766 ​ Corporate bank loans ​ 14 ​ 66 ​ 105 ​ (19) ​ Municipal bonds ​ (18) ​ (25) ​ (12) ​ 1,397 ​ Equity securities ​ 930 ​ — ​ 4,701 ​ 3,471 ​ Gain on investments ​ 1,059 ​ 390 ​ 5,288 ​ 5,612 ​ Other-than-temporary impairments ​ ​ — ​ ​ (1,692) ​ ​ — ​ ​ (1,692) ​ Unrealized losses on other investments ​ — ​ (262) ​ — ​ (2,136) ​ Unrealized (losses) gains on equity investments ​ ​ (1,592) ​ ​ 937 ​ ​ 3,834 ​ ​ (29,683) ​ Investment (losses) gains, net ​ $ (533) ​ $ (627) ​ $ 9,122 ​ $ (27,899) ​
Summary of Gross Unrealized Loss Position	The following schedules summarize the gross unrealized losses showing the length of time that investments have been continuously in an unrealized loss position as of September 30, 2021 and December 31, 2020 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of September 30, 2021 ​ ​ 12 months or less ​ Longer than 12 months ​ Total ​ ​ ​ Unrealized ​ ​ Unrealized ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Corporate bonds ​ — ​ — ​ 2,592 ​ (73) ​ 2,592 ​ (73) Corporate bank loans ​ 27,235 ​ (125) ​ 20,443 ​ (407) ​ 47,678 ​ (532) Municipal bonds ​ 4,000 ​ (57) ​ 999 ​ (11) ​ 4,999 ​ (68) Mortgage-backed ​ — ​ — ​ 11 ​ (4) ​ 11 ​ (4) Total debt securities ​ 31,235 ​ (182) ​ 24,045 ​ (495) ​ 55,280 ​ (677) Total equity securities ​ 9,514 ​ (335) ​ ​ 4,143 ​ ​ (1,580) ​ ​ 13,657 ​ (1,915) Total investments with unrealized losses ​ $ 40,749 ​ $ (517) ​ $ 28,188 ​ $ (2,075) ​ $ 68,937 ​ $ (2,592) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2020 ​ ​ 12 months or less ​ Longer than 12 months ​ Total ​ ​ ​ Unrealized ​ ​ Unrealized ​ ​ Unrealized ​ Fair Value Losses Fair Value Losses Fair Value Losses U.S. Treasury securities and obligations of U.S. Government ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Corporate bonds ​ 7,801 ​ (186) ​ 3,556 ​ (198) ​ 11,357 ​ (384) Corporate bank loans ​ 45,233 ​ (559) ​ 4,144 ​ (312) ​ 49,377 ​ (871) Municipal bonds ​ 2,859 ​ (33) ​ 1,154 ​ (17) ​ 4,013 ​ (50) Mortgage-backed ​ 635 ​ (25) ​ 14 ​ (4) ​ 649 ​ (29) Total debt securities ​ 56,528 ​ (803) ​ 8,868 ​ (531) ​ 65,396 ​ (1,334) Total equity securities ​ 9,572 ​ (1,610) ​ 1,848 ​ (1,638) ​ 11,420 ​ (3,248) Total investments with unrealized losses ​ $ 66,100 ​ $ (2,413) ​ $ 10,716 ​ $ (2,169) ​ $ 76,816 ​ $ (4,582)
Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturities	​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost Fair Value ​ ​ (in thousands) Due in one year or less ​ $ 125,303 ​ $ 126,261 Due after one year through five years ​ 114,399 ​ 116,086 Due after five years through ten years ​ 64,251 ​ 64,191 Due after ten years ​ 9,109 ​ 9,360 Mortgage-backed ​ 1,967 ​ 2,018 ​ ​ $ 315,029 ​ $ 317,916

Reserves for Unpaid Losses an_2

Reserves for Unpaid Losses and Loss Adjustment Expenses (Tables)	9 Months Ended
	Sep. 30, 2021
Reserves for Unpaid Losses and Loss Adjustment Expenses [Abstract]
Summary of Activity in the Reserves for Unpaid Losses and Loss Adjustment Expense	Year to-date activity in the consolidated reserves for unpaid losses and LAE is summarized as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ September 30, ​ ​ ​ 2021 ​ 2020 ​ Balance at January 1 ​ $ 789,768 ​ $ 620,355 ​ Less reinsurance recoverable ​ 357,200 ​ 274,275 ​ Net balance at January 1 ​ 432,568 ​ 346,080 ​ ​ ​ ​ ​ ​ ​ ​ ​ Incurred related to: ​ ​ ​ Current year ​ 207,121 ​ 253,319 ​ Loss portfolio transfer ​ ​ — ​ ​ 21,700 ​ Prior years ​ 2,553 ​ 33,259 ​ Total incurred ​ 209,674 ​ 308,278 ​ ​ ​ ​ ​ ​ ​ ​ ​ Paid related to: ​ ​ ​ Current year ​ 64,292 ​ 67,146 ​ Loss portfolio transfer ​ ​ — ​ ​ 21,700 ​ Prior years ​ 130,623 ​ 177,325 ​ Total paid ​ 194,915 ​ 266,171 ​ ​ ​ ​ ​ ​ ​ ​ ​ Net balance at September 30 ​ 447,327 ​ 388,187 ​ Plus reinsurance recoverable ​ 368,054 ​ 367,704 ​ Balance at September 30 ​ $ 815,381 ​ $ 755,891 ​
Impact of Net Prior Years Loss Development On Each Reporting Segment	The year to date impact from the unfavorable (favorable) net prior years’ loss development on each reporting segment is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ ​ 2021 2020 Specialty Commercial Segment ​ $ 533 ​ $ 23,961 Standard Commercial Segment ​ (2,336) ​ 2,350 Personal Segment ​ 4,356 ​ 6,948 Corporate ​ — ​ — Total unfavorable net prior year development ​ $ 2,553 ​ $ 33,259

Share-Based Payment Arrangeme_2

Share-Based Payment Arrangements (Tables)	9 Months Ended
	Sep. 30, 2021
Share-Based Payment Arrangements [Abstract]
Summary of the Status of Stock Options	A summary of the status of our stock options as of September 30, 2021 and changes during the nine months then ended is presented below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Average ​ ​ ​ ​ ​ ​ ​ ​ ​ Remaining ​ Aggregate ​ ​ Number of ​ Weighted Average ​ Contractual ​ Intrinsic Value ​ Shares Exercise Price Term (Years) ($000) Outstanding at January 1, 2021 14,157 ​ $ 6.99 ​ Granted — ​ $ — ​ Exercised — ​ $ — ​ Forfeited or expired — ​ $ — ​ Outstanding at September 30, 2021 14,157 ​ $ 6.99 0.3 ​ $ — Exercisable at September 30, 2021 14,157 ​ $ 6.99 0.3 ​ $ —
Schedule of Options, Grants in Period and Grant Date Intrinsic Value	The following table details the intrinsic value of options exercised, total cost of share-based payments charged against income before income tax benefit and the amount of related income tax benefit recognized in income for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended September 30, ​ Nine Months Ended September 30, ​ ​ 2021 2020 2021 2020 ​ Intrinsic value of options exercised ​ $ — ​ $ — ​ $ — ​ $ — ​ Cost of share-based payments (non-cash) ​ $ — ​ $ — ​ $ — ​ $ — ​ Income tax benefit of share-based payments recognized in income ​ $ — ​ $ — ​ $ — ​ $ — ​
Summary of the Status of Restricted Stock Units	The following table details the status of our restricted stock units as of and for the nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number of Restricted Stock Units ​ ​ 2021 2020 Nonvested at January 1 ​ 228,827 353,491 Granted ​ — — Vested ​ (30,309) (19,065) Forfeited ​ (142,022) (92,563) Nonvested at September 30 ​ 56,496 241,863

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Information [Abstract]
Schedule of Business Segment Information	The following is business segment information for the three and nine months ended September 30, 2021 and 2020 (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ 2021 2020 2021 2020 ​ Revenues ​ ​ ​ ​ ​ ​ Specialty Commercial Segment ​ $ 62,493 ​ $ 83,749 ​ $ 196,982 ​ $ 262,761 ​ Standard Commercial Segment ​ 18,157 ​ 17,398 ​ 53,085 ​ 52,130 ​ Personal Segment ​ 18,316 ​ 20,513 ​ 56,390 ​ 65,300 ​ Corporate ​ (1,616) ​ (1,367) ​ 7,134 ​ (30,430) ​ Consolidated ​ $ 97,350 ​ $ 120,293 ​ $ 313,591 ​ $ 349,761 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pre-tax income (loss) ​ ​ ​ ​ ​ ​ Specialty Commercial Segment ​ $ 12,620 ​ $ (27,237) ​ $ 28,816 ​ $ (5,752) ​ Standard Commercial Segment ​ 1,957 ​ (1,672) ​ 347 ​ (154) ​ Personal Segment ​ (3,887) ​ (2,065) ​ (8,275) ​ (5,836) ​ Corporate ​ (6,299) ​ (6,818) ​ (6,280) ​ (90,742) ​ Consolidated ​ $ 4,391 ​ $ (37,792) ​ $ 14,608 ​ $ (102,484) ​
Schedule of Additional Business Segment Information	The following is additional business segment information as of the dates indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, Assets: ​ 2021 ​ 2020 Specialty Commercial Segment ​ $ 1,113,020 ​ $ 1,116,137 Standard Commercial Segment ​ 199,999 ​ 183,689 Personal Segment ​ 139,530 ​ 133,310 Corporate ​ 67,659 ​ 63,581 Consolidated ​ $ 1,520,208 ​ $ 1,496,717

Reinsurance (Tables)

Reinsurance (Tables)	9 Months Ended
	Sep. 30, 2021
Reinsurance [Abstract]
Schedule of Reinsurance Ceded and Recoveries	The following table shows earned premiums ceded and reinsurance loss recoveries by period (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Ceded earned premiums $ 75,314 $ 83,287 $ 229,478 $ 257,312 Reinsurance recoveries $ 69,845 $ 66,395 $ 210,024 $ 222,067

Subordinated Debt Securities (T

Subordinated Debt Securities (Tables)	9 Months Ended
	Sep. 30, 2021
Subordinated Debt Securities [Abstract]
Summary of the nature and terms of the junior subordinated debt and trust preferred securities	The following table summarizes the nature and terms of the junior subordinated debt and trust preferred securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Hallmark ​ ​ Hallmark ​ ​ Statutory ​ ​ Statutory ​ ​ ​ Trust I ​ ​ Trust II ​ ​ ​ ​ ​ ​ ​ Issue date ​ ​ June 21, 2005 ​ ​ August 23, 2007 Principal amount of trust preferred securities ​ $ 30,000 ​ $ 25,000 Principal amount of junior subordinated debt securities ​ $ 30,928 ​ $ 25,774 Maturity date of junior subordinated debt securities ​ ​ June 15, 2035 ​ ​ September 15, 2037 Trust common stock ​ $ 928 ​ $ 774 Interest rate, per annum ​ ​ Three Month LIBOR + 3.25% ​ ​ Three Month LIBOR + 2.90% Current interest rate at September 30, 2021 ​ ​ 3.37% ​ ​ 3.02%

Deferred Policy Acquisition C_2

Deferred Policy Acquisition Costs (Tables)	9 Months Ended
	Sep. 30, 2021
Deferred Policy Acquisition Costs [Abstract]
Deferred Amortized Policy Acquisition Costs	The following table shows total deferred and amortized policy acquisition cost activity by period reported in operating expenses (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Deferred $ (8,163) $ (20,939) $ (29,327) $ (45,342) Amortized ​ ​ 10,960 ​ ​ 21,684 ​ ​ 36,673 ​ ​ 45,971 Net $ 2,797 $ 745 $ 7,346 $ 629

Earnings per Share (Tables)

Earnings per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares Outstanding	The following table sets forth basic and diluted weighted average shares outstanding for the periods indicated (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares - basic ​ 18,172 ​ ​ 18,142 ​ 18,162 ​ ​ 18,136 Effect of dilutive securities ​ — ​ ​ — ​ — ​ ​ — Weighted average shares - assuming dilution ​ 18,172 ​ ​ 18,142 ​ 18,162 ​ ​ 18,136

Net Periodic Pension Cost (Tabl

Net Periodic Pension Cost (Tables)	9 Months Ended
	Sep. 30, 2021
Net Periodic Pension Cost [Abstract]
Schedule of Net Benefit Costs	The following table details the net periodic pension cost incurred by period (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Nine Months Ended ​ September 30, September 30, ​ 2021 2020 2021 2020 Interest cost $ 67 $ 89 $ 202 $ 266 Amortization of net loss ​ ​ 43 ​ ​ 34 ​ ​ 130 ​ ​ 104 Expected return on plan assets ​ ​ (177) ​ ​ (171) ​ ​ (531) ​ ​ (513) Net periodic pension cost $ (67) $ (48) $ (199) $ (143) Contributed amount $ — $ — $ — $ —

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2021
Supplemental Cash Flow Information [Abstract]
Reconciliation of Cash, Cash Equivalents and Restricted Cash in Balance Sheet to Cash Flows	The following table provides a reconciliation of cash, cash equivalents and restricted cash reported in the consolidated balance sheet to the total of the same such amounts shown in the statement of cash flows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ As of September 30, ​ 2021 2020 ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents $ 325,833 $ 186,683 Restricted cash ​ ​ 3,793 ​ ​ 17,671 Total cash, cash equivalents and restricted cash shown in the statement of cash flows $ 329,626 $ 204,354
Supplemental cash flow information	The following table provides supplemental cash flow information for the nine months ended September 30, 2021 and 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ Nine Months Ended September 30, ​ 2021 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest paid $ 3,165 $ 4,845 ​ ​ ​ ​ ​ ​ ​ Income taxes (recovered) paid ​ $ (4,147) ​ $ 654 ​ ​ ​ ​ ​ ​ ​ Supplemental schedule of non-cash investing activities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Receivable for securities related to investment disposals $ 5,613 $ 1,568 ​ ​ ​ ​ ​ ​ ​ Payable for securities related to investment purchases $ 1,047 $ 507

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive (Loss) Income Balances (Tables)	9 Months Ended
	Sep. 30, 2021
Changes in Accumulated Other Comprehensive (Loss) Income Balances [Abstract]
Schedule of Changes in Accumulated Other Comprehensive (Loss) Income	The changes in accumulated other comprehensive (loss) income balances as of September 30, 2021 and 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accumulated Other ​ ​ Pension ​ Unrealized ​ Comprehensive ​ Liability Gains (Loss) Income (Loss) Balance at January 1, 2020 ​ $ (3,239) ​ $ 3,927 ​ $ 688 Other comprehensive loss: ​ ​ ​ ​ ​ ​ ​ ​ Change in net actuarial gain ​ 104 ​ — ​ 104 Tax effect on change in net actuarial gain ​ (22) ​ — ​ (22) Unrealized holding gains arising during the period ​ — ​ 4,149 ​ 4,149 Tax effect on unrealized holding gains arising during the period ​ — ​ (872) ​ (872) Reclassification adjustment for gains included in net income ​ — ​ (5,612) ​ (5,612) Tax effect on reclassification adjustment for gains included in net income ​ — ​ 1,179 ​ 1,179 Other comprehensive loss, net of tax ​ 82 ​ (1,156) ​ (1,074) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at September 30, 2020 ​ $ (3,157) ​ $ 2,771 ​ $ (386) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at January 1, 2021 ​ $ (3,762) ​ $ 4,145 ​ $ 383 Other comprehensive loss: ​ ​ ​ Change in net actuarial gain ​ 130 ​ — ​ 130 Tax effect on change in net actuarial gain ​ (27) ​ — ​ (27) Unrealized holding gains arising during the period ​ — ​ 3,063 ​ 3,063 Tax effect on unrealized holding gains arising during the period ​ — ​ (643) ​ (643) Reclassification adjustment for gains included in net income ​ — ​ (5,288) ​ (5,288) Tax effect on reclassification adjustment for gains included in net income ​ — ​ 1,110 ​ 1,110 Other comprehensive loss, net of tax ​ 103 ​ (1,758) ​ (1,655) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at September 30, 2021 ​ $ (3,659) ​ $ 2,387 ​ $ (1,272)

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Leases [Abstract]
Summary of components of lease expense and other lease information	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended Nine Months Ended ​ ​ September 30, ​ September 30, ​ September 30, ​ September 30, ​ 2021 ​ 2020 2021 ​ 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating lease cost ​ $ 526 ​ ​ $ 750 ​ ​ $ 1,620 ​ ​ $ 2,291 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash paid for amounts included in the measurement of lease liabilities ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating cash flows from operating leases ​ $ 543 ​ ​ $ 758 ​ ​ $ 1,627 ​ ​ $ 1,749 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Right-of-use assets obtained in exchange for new operating lease liabilities ​ $ — ​ ​ $ — ​ ​ $ 436 ​ ​ $ — ​
Summary of balance sheet components	Other lease information as of September 30, 2021 and December 31, 2020 are as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 2020 ​ ​ ​ ​ ​ ​ ​ Operating lease right-of-use assets ​ $ 13,501 ​ $ 13,986 ​ ​ ​ ​ ​ ​ ​ Operating lease liabilities ​ $ 15,369 ​ $ 15,862 ​ ​ ​ ​ ​ ​ ​ Weighted-average remaining lease term - operating leases ​ ​ 11.6 ​ ​ 10.2 ​ ​ ​ ​ ​ ​ ​ Weighted-average discount rate - operating leases ​ ​ 6.22% ​ ​ 5.88%
Summary of future minimum lease payments under non-cancellable leases	Future minimum lease payments under non-cancellable leases as of September 30, 2021 and December 31, 2020 were as follows (in thousands): ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ September 30, ​ December 31, ​ 2021 ​ 2020 ​ ​ ​ ​ ​ ​ ​ 2021 ​ $ 544 ​ $ 2,172 2022 ​ ​ 2,171 ​ ​ 2,171 2023 ​ ​ 2,023 ​ ​ 1,885 2024 ​ ​ 2,216 ​ ​ 1,941 2025 ​ ​ 2,450 ​ ​ 1,975 Thereafter ​ ​ 18,264 ​ ​ 11,350 Total future minimum lease payments ​ $ 27,668 ​ $ 21,494 ​ ​ ​ ​ ​ ​ ​ Less imputed interest ​ $ (12,299) ​ $ (5,632) Total operating lease liability ​ $ 15,369 ​ $ 15,862

General (Narrative) (Details)

General (Narrative) (Details)	9 Months Ended
	Sep. 30, 2021segment
General [Abstract]
Number of reportable segments	3

Basis of Presentation (Narrativ

Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	Aug. 23, 2007	Jun. 21, 2005	Sep. 30, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Senior unsecured notes due 2029, carrying value			$ 49,230	$ 49,156
Hallmark Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Proceeds from issuance of trust preferred securities	$ 25,000	$ 30,000
Senior unsecured notes due 2029 [Member]
Variable Interest Entity [Line Items]
Senior unsecured notes due 2029, carrying value			49,200
Senior unsecured notes due 2029, fair value			53,000
Subordinated Debt [Member]
Variable Interest Entity [Line Items]
Trust preferred securities, carrying value			55,900
Trust preferred securities, fair value			$ 29,000
Subordinated Debt [Member] | Hallmark Statutory Trust I [Member]
Variable Interest Entity [Line Items]
Payments to acquire trust preferred investments	$ 25,800	$ 30,900

Revision of Previously Issued_3

Revision of Previously Issued Consolidated Financial Statements - Statements of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded premiums written	$ (78,140)			$ (83,408)		$ (231,891)	$ (239,267)
Net premiums written	90,964			113,056		269,947	342,430
Change in unearned premiums	3,383			3,664		22,836	19,587
Net premiums earned	94,347			116,720		292,783	362,017
Total revenue	97,350			120,293		313,591	349,761
Losses and loss adjustment expenses	63,706			122,555		209,674	308,278
Operating expenses	27,882			33,640		85,188	92,059
(Loss) income before tax	4,391			(37,792)		14,608	(102,484)
Income tax expense	946			(9,404)		3,037	(15,943)
Net income (loss)	$ 3,445			$ (28,388)		$ 11,571	$ (86,541)
Common stockholders net income per share:
Basic (in dollars per share)	$ 0.19			$ (1.56)		$ 0.64	$ (4.77)
Diluted (in dollars per share)	$ 0.19			$ (1.56)		$ 0.64	$ (4.77)
Incorrect Accounting For Reinsurance Treaties [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded premiums written		$ (82,230)	$ (71,521)	$ (83,408)	$ (153,751)		$ (239,267)	$ (315,035)	$ (353,257)
Net premiums written		87,486	91,497	113,056	178,983		342,430	428,333	490,574
Change in unearned premiums		9,098	10,355	3,664	19,453		19,587	43,568	(56,282)
Net premiums earned		96,584	101,852	116,720	198,436		362,017	471,901	434,292
Total revenue		104,188	112,053	120,293	216,241		349,761	468,848	483,786
Losses and loss adjustment expenses		76,489	69,479	122,555	145,968		308,278	406,907	360,546
Operating expenses		27,334	29,973	33,640	57,307		92,059	123,919	117,032
(Loss) income before tax		(1,010)	11,227	(37,792)	10,217		(102,484)	(115,768)	(1,674)
Income tax expense		(165)	2,256	(9,404)	2,091		(15,943)	(21,417)	(542)
Net income (loss)		$ (845)	$ 8,971	$ (28,388)	$ 8,126		$ (86,541)	$ (94,351)	$ (1,132)
Common stockholders net income per share:
Basic (in dollars per share)		$ (0.05)	$ 0.49	$ (1.56)	$ 0.45		$ (4.77)	$ (5.20)	$ (0.06)
Diluted (in dollars per share)		$ (0.05)	$ 0.49	$ (1.56)	$ 0.45		$ (4.77)	$ (5.20)	$ (0.06)
Incorrect Accounting For Reinsurance Treaties [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded premiums written		$ (80,582)	$ (69,871)	$ (80,353)	$ (150,453)		$ (230,094)	$ (304,395)	$ (347,279)
Net premiums written		89,134	93,147	116,111	182,281		351,603	438,973	496,552
Change in unearned premiums		9,477	11,071	3,449	20,548		17,486	42,825	(59,675)
Net premiums earned		98,611	104,218	119,560	202,829		369,089	481,798	436,877
Total revenue		106,215	114,419	123,133	220,634		356,833	478,745	486,371
Losses and loss adjustment expenses		77,719	70,903	124,253	148,622		312,531	412,851	362,165
Operating expenses		27,653	30,441	34,296	58,094		93,703	126,266	117,357
(Loss) income before tax		(532)	11,700	(37,306)	11,168		(101,309)	(114,162)	(1,032)
Income tax expense		(65)	2,355	(9,302)	2,290		(15,696)	(22,507)	(407)
Net income (loss)		$ (467)	$ 9,345	$ (28,004)	$ 8,878		$ (85,613)	$ (91,655)	$ (625)
Common stockholders net income per share:
Basic (in dollars per share)		$ (0.03)	$ 0.52	$ (1.54)	$ 0.49		$ (4.72)	$ (5.05)	$ (0.03)
Diluted (in dollars per share)		$ (0.03)	$ 0.52	$ (1.54)	$ 0.49		$ (4.72)	$ (5.05)	$ (0.03)
Incorrect Accounting For Reinsurance Treaties [Member] | Revisions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded premiums written		$ (1,648)	$ (1,650)	$ (3,055)	$ (3,298)		$ (9,173)	$ (10,640)	$ (5,978)
Net premiums written		(1,648)	(1,650)	(3,055)	(3,298)		(9,173)	(10,640)	(5,978)
Change in unearned premiums		(379)	(716)	215	(1,095)		2,101	743	3,393
Net premiums earned		(2,027)	(2,366)	(2,840)	(4,393)		(7,072)	(9,897)	(2,585)
Total revenue		(2,027)	(2,366)	(2,840)	(4,393)		(7,072)	(9,897)	(2,585)
Losses and loss adjustment expenses		(1,230)	(1,424)	(1,698)	(2,654)		(4,253)	(5,944)	(1,619)
Operating expenses		(319)	(468)	(656)	(787)		(1,644)	(2,347)	(325)
(Loss) income before tax		(478)	(473)	(486)	(951)		(1,175)	(1,606)	(642)
Income tax expense		(100)	(99)	(102)	(199)		(247)	1,090	(135)
Net income (loss)		$ (378)	$ (374)	$ (384)	$ (752)		$ (928)	$ (2,696)	$ (507)
Common stockholders net income per share:
Basic (in dollars per share)		$ (0.02)	$ (0.03)	$ (0.02)	$ (0.04)		$ (0.05)	$ (0.15)	$ (0.03)
Diluted (in dollars per share)		$ (0.02)	$ (0.03)	$ (0.02)	$ (0.04)		$ (0.05)	$ (0.15)	$ (0.03)

Revision of Previously Issued_4

Revision of Previously Issued Consolidated Financial Statements - Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded unearned premiums	$ 145,858			$ 143,446
Reinsurance recoverable	515,088			497,846
Federal income tax recoverable	17,347			24,691
Total assets	1,520,208			1,496,717
Reinsurance payable	71,183			61,100
Total liabilities	1,342,428			1,329,011
Retained earnings	77,270			65,699
Total stockholders' equity	177,780			167,706	$ 175,251
Liabilities and Equity	$ 1,520,208			1,496,717
Incorrect Accounting For Reinsurance Treaties [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded unearned premiums		$ 143,034	$ 138,010	143,446	146,176	$ 167,998
Reinsurance recoverable		504,742	503,854	497,846	508,725	317,137
Federal income tax recoverable		19,274	23,003	24,691	19,995	9,134
Total assets		1,519,637	1,529,534	1,496,717	1,504,108	1,500,861
Reinsurance payable		68,832	67,255	61,100	74,875	65,381
Total liabilities		1,344,721	1,353,373	1,329,011	1,328,857	1,238,099
Retained earnings		73,825	74,668	65,699	74,029	160,049
Total stockholders' equity		174,916	176,160	167,706	175,251	262,761
Liabilities and Equity		1,519,637	1,529,533	1,496,717	1,504,108	1,500,860
Incorrect Accounting For Reinsurance Treaties [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded unearned premiums		139,609	134,206	138,926	144,075	164,221
Reinsurance recoverable		494,473	494,815	490,231	504,472	315,466
Federal income tax recoverable		20,025	23,855	25,642	19,748	8,995
Total assets		1,506,694	1,517,543	1,485,533	1,497,507	1,495,274
Reinsurance payable		51,921	51,673	46,700	67,346	59,274
Total liabilities		1,327,810	1,337,791	1,314,611	1,321,328	1,231,992
Retained earnings		77,793	78,260	68,915	74,957	160,570
Total stockholders' equity		178,884	179,752	170,922	176,179	263,282
Liabilities and Equity		1,506,694	1,517,543	1,485,533	1,497,507	1,495,274
Incorrect Accounting For Reinsurance Treaties [Member] | Revisions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Ceded unearned premiums		3,425	3,804	4,520	2,101	3,777
Reinsurance recoverable		10,269	9,039	7,615	4,253	1,671
Federal income tax recoverable		(751)	(852)	(951)	247	139
Total assets		12,943	11,991	11,184	6,601	5,587
Reinsurance payable		16,911	15,582	14,400	7,529	6,107
Total liabilities		16,911	15,582	14,400	7,529	6,107
Retained earnings		(3,968)	(3,592)	(3,216)	(928)	(521)
Total stockholders' equity		(3,968)	(3,592)	(3,216)	(928)	(521)
Liabilities and Equity		$ 12,943	$ 11,990	$ 11,184	$ 6,601	$ 5,586

Revision of Previously Issued_5

Revision of Previously Issued Consolidated Financial Statements - Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)	$ 3,445			$ (28,388)		$ 11,571	$ (86,541)
Change in reinsurance payable						10,083	15,601
Change in reinsurance recoverable						(17,242)	(193,259)
Change in ceded unearned premiums						(2,412)	18,045
Change in federal income tax payable (recoverable)						7,344	(11,000)
Net cash provided by (used in) operating activities						$ 47,348	(62,895)
Incorrect Accounting For Reinsurance Treaties [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		$ (845)	$ 8,971	(28,388)	$ 8,126		(86,541)	$ (94,351)	$ (1,132)
Change in reinsurance payable			6,155		7,731		15,601	(4,281)	(2,400)
Change in reinsurance recoverable			(6,008)		(6,895)		(193,259)	(180,709)	(65,056)
Change in ceded unearned premiums			5,436		411		18,045	24,552	(34,583)
Change in federal income tax payable (recoverable)			1,687		5,417		(11,000)	(15,557)	(9,134)
Net cash provided by (used in) operating activities			29,476		28,899		(62,895)	(69,327)	27,670
Incorrect Accounting For Reinsurance Treaties [Member] | As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		(467)	9,345	(28,004)	8,878		(85,613)	(91,655)	(625)
Change in reinsurance payable			4,973		5,221		8,072	(12,574)	(8,054)
Change in reinsurance recoverable			(4,584)		(4,242)		(189,006)	(174,765)	(63,437)
Change in ceded unearned premiums			4,720		(683)		20,146	25,295	(31,190)
Change in federal income tax payable (recoverable)			1,787		5,617		(10,753)	(16,647)	(8,999)
Net cash provided by (used in) operating activities			29,476		28,899		(62,895)	(69,327)	27,670
Incorrect Accounting For Reinsurance Treaties [Member] | Revisions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		$ (378)	(374)	$ (384)	(752)		(928)	(2,696)	(507)
Change in reinsurance payable			1,182		2,510		7,529	8,293	5,654
Change in reinsurance recoverable			(1,424)		(2,653)		(4,253)	(5,944)	(1,619)
Change in ceded unearned premiums			716		1,094		(2,101)	(743)	(3,393)
Change in federal income tax payable (recoverable)			$ (100)		$ (200)		$ (247)	$ 1,090	$ (135)

Acquisitions, Goodwill and In_2

Acquisitions, Goodwill and Indefinite-Lived Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Sep. 30, 2021
Acquisitions, Goodwill and Indefinite-Lived Intangible Assets [Abstract]
Goodwill, Impairment Loss	$ 44.7
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 1.3
Goodwill		$ 0
Indefinite-lived intangibles assets		$ 0

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021USD ($)security	Dec. 31, 2020security
Fair Value [Abstract]
Available-For-Sale Securities, Number Of Debt Securities With Unobservable Inputs | security	1	1
Transfer of assets from level 1 to level 2	$ 0
Transfer of assets from level 2 to level 1	0
Transfer of liabilities from level 1 to level 2	0
Transfer of liabilities from level 2 to level 1	$ 0

Fair Value (Fair Value of Asset

Fair Value (Fair Value of Assets Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 317,916	$ 507,279
Total equity securities	45,362	29,388
Total investments	363,278	536,667
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total equity securities	45,362	29,388
Collateralized Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,018
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	317,916	507,279
Total investments	363,278	536,667
Fair Value, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total equity securities	45,362	29,388
Fair Value, Recurring [Member] | U.S. Treasury securities and obligations of U.S. Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	66,496	179,746
Fair Value, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	122,097	219,368
Fair Value, Recurring [Member] | Corporate bank loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	86,334	52,782
Fair Value, Recurring [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	40,971	50,539
Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,018	4,844
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Total investments	45,362	29,388
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total equity securities	45,362	29,388
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | U.S. Treasury securities and obligations of U.S. Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate bank loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	317,560	506,931
Total investments	317,560	506,931
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total equity securities	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | U.S. Treasury securities and obligations of U.S. Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	66,496	179,746
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	121,741	219,020
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate bank loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	86,334	52,782
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	40,971	50,539
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	2,018	4,844
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	356	348
Total investments	356	348
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total equity securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | U.S. Treasury securities and obligations of U.S. Government [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	356	348
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate bank loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Collateralized Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 0	$ 0

Fair Value (Fair Value, Assets

Fair Value (Fair Value, Assets Measured on Recurring Basis Using Significant Unobservable Inputs (Level 3)) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 348	$ 339
Sales	0	0
Settlements	0	0
Purchases	0	0
Issuances	0	0
Total realized/unrealized loss (gains) included in net income (loss)	0	0
Net gains included in other comprehensive income (loss)	8	(14)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Ending balance	$ 356	$ 325

Investments (Narrative) (Detail

Investments (Narrative) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)security	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)security	Sep. 30, 2020USD ($)	Dec. 31, 2020security
Schedule of Available-for-sale Securities [Line Items]
Gross gains on investments	$ 1,100	$ 500	$ 5,800	$ 22,400
Gross losses on investments	0	100	500	16,800
Proceeds from sale of investment securities	$ 1,100	47,400	16,900	155,000
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]
Gain on debt securities			600	0
Other-than-temporary impairment		$ 1,692	$ 0	$ 1,692
Debt Securities [Member]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Number of Positions [Abstract]
Number of debt securities with unrealized loss | security	86		86		81
Number of debt securities with unrealized loss, less than 12 months | security	58		58		64
Number of debt securities with unrealized loss, greater than 12 months | security	28		28		17

Investments (Amortized Cost & C

Investments (Amortized Cost & Carrying Value and Estimated Fair Value of Investments in Debt and Equity Securities by Category) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	$ 315,029	$ 502,167
Fair Value	317,916	507,279
Equity Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Equity securities, Amortized Cost/ Carrying Value	39,129	26,988
Total equity securities	45,362	29,388
Investments, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Investments, Amortized cost/ Carrying Value	354,158	529,155
Investments, Gross Unrealized Gains	11,712	12,094
Investments, Gross Unrealized Losses	(2,592)	(4,582)
Investments, Fair value	363,278	536,667
Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	1,967
Fair Value	2,018
Debt Securities [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	315,029	502,167
Gross Unrealized Gain	3,564	6,446
Gross Unrealized Loss	(677)	(1,334)
Fair Value	317,916	507,279
Debt Securities [Member] | U.S. Treasury securities and obligations of U.S. Government [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	66,354	179,259
Gross Unrealized Gain	142	487
Gross Unrealized Loss	0	0
Fair Value	66,496	179,746
Debt Securities [Member] | Corporate Bonds [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	119,341	214,666
Gross Unrealized Gain	2,829	5,086
Gross Unrealized Loss	(73)	(384)
Fair Value	122,097	219,368
Debt Securities [Member] | Corporate bank loans [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	86,749	53,650
Gross Unrealized Gain	117	3
Gross Unrealized Loss	(532)	(871)
Fair Value	86,334	52,782
Debt Securities [Member] | Municipal Bonds [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	40,618	49,833
Gross Unrealized Gain	421	756
Gross Unrealized Loss	(68)	(50)
Fair Value	40,971	50,539
Debt Securities [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Amortized Cost/ Carrying Value	1,967	4,759
Gross Unrealized Gain	55	114
Gross Unrealized Loss	(4)	(29)
Fair Value	2,018	4,844
Equity Securities [Member]
Equity Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]
Equity securities, Amortized Cost/ Carrying Value	39,129	26,988
Equity Securities, Gross Unrealized Gains	8,148	5,648
Equity Securities, Gross Unrealized Losses	(1,915)	(3,248)
Total equity securities	$ 45,362	$ 29,388

Investments (Major Categories o

Investments (Major Categories of Net Investment Gains (Losses) on Investments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Gain (Loss) on Securities [Line Items]
Gain on debt securities			$ 600	$ 0
Gain on investments	$ 1,059	$ 390	5,288	5,612
Other-than-temporary impairment		(1,692)	0	(1,692)
Investment (losses) gains, net	(533)	(627)	9,122	(27,899)
Equity Securities [Member]
Gain (Loss) on Securities [Line Items]
Gain on equity securities	930		4,701	3,471
Unrealized (losses) gains	(1,592)	937	3,834	(29,683)
Other Investments [Member]
Gain (Loss) on Securities [Line Items]
Unrealized (losses) gains		(262)		(2,136)
U.S. Treasury securities and obligations of U.S. Government [Member] | Debt Securities [Member]
Gain (Loss) on Securities [Line Items]
Gain on debt securities		(3)		(3)
Corporate Bonds [Member] | Debt Securities [Member]
Gain (Loss) on Securities [Line Items]
Gain on debt securities	133	352	494	766
Corporate bank loans [Member] | Debt Securities [Member]
Gain (Loss) on Securities [Line Items]
Gain on debt securities	14	66	105	(19)
Municipal Bonds [Member] | Debt Securities [Member]
Gain (Loss) on Securities [Line Items]
Gain on debt securities	$ (18)	$ (25)	$ (12)	$ 1,397

Investments (Summary of Gross U

Investments (Summary of Gross Unrealized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments, Unrealized Loss Position, Fair Value
Investments, Fair Value 12 months or less	$ 40,749	$ 66,100
Investments, Fair Value Longer than 12 months	28,188	10,716
Investments, Total Fair Value	68,937	76,816
Investments, Unrealized Losses
Investments, Unrealized Losses 12 months or less	(517)	(2,413)
Investments, Unrealized Losses Longer than 12 months	(2,075)	(2,169)
Investments, Total Unrealized Losses	(2,592)	(4,582)
Debt Securities [Member]
Debt Securities, Unrealized Loss Position, Fair Value
Debt securities, Fair Value 12 months or less	31,235	56,528
Debt securities, Fair Value Longer than 12 months	24,045	8,868
Debt securities, Total Fair Value	55,280	65,396
Debt securities, Unrealized Losses
Debt securities, Unrealized Losses 12 months or less	(182)	(803)
Debt securities, Unrealized Losses Longer than 12 months	(495)	(531)
Debt securities, Total Unrealized Losses	677	1,334
Debt Securities [Member] | U.S. Treasury securities and obligations of U.S. Government [Member]
Debt Securities, Unrealized Loss Position, Fair Value
Debt securities, Fair Value 12 months or less	0	0
Debt securities, Fair Value Longer than 12 months	0	0
Debt securities, Total Fair Value	0	0
Debt securities, Unrealized Losses
Debt securities, Unrealized Losses 12 months or less	0	0
Debt securities, Unrealized Losses Longer than 12 months	0	0
Debt securities, Total Unrealized Losses	0	0
Debt Securities [Member] | Corporate Bonds [Member]
Debt Securities, Unrealized Loss Position, Fair Value
Debt securities, Fair Value 12 months or less	0	7,801
Debt securities, Fair Value Longer than 12 months	2,592	3,556
Debt securities, Total Fair Value	2,592	11,357
Debt securities, Unrealized Losses
Debt securities, Unrealized Losses 12 months or less	0	(186)
Debt securities, Unrealized Losses Longer than 12 months	(73)	(198)
Debt securities, Total Unrealized Losses	73	384
Debt Securities [Member] | Corporate bank loans [Member]
Debt Securities, Unrealized Loss Position, Fair Value
Debt securities, Fair Value 12 months or less	27,235	45,233
Debt securities, Fair Value Longer than 12 months	20,443	4,144
Debt securities, Total Fair Value	47,678	49,377
Debt securities, Unrealized Losses
Debt securities, Unrealized Losses 12 months or less	(125)	(559)
Debt securities, Unrealized Losses Longer than 12 months	(407)	(312)
Debt securities, Total Unrealized Losses	532	871
Debt Securities [Member] | Municipal Bonds [Member]
Debt Securities, Unrealized Loss Position, Fair Value
Debt securities, Fair Value 12 months or less	4,000	2,859
Debt securities, Fair Value Longer than 12 months	999	1,154
Debt securities, Total Fair Value	4,999	4,013
Debt securities, Unrealized Losses
Debt securities, Unrealized Losses 12 months or less	(57)	(33)
Debt securities, Unrealized Losses Longer than 12 months	(11)	(17)
Debt securities, Total Unrealized Losses	68	50
Debt Securities [Member] | Collateralized Mortgage Backed Securities [Member]
Debt Securities, Unrealized Loss Position, Fair Value
Debt securities, Fair Value 12 months or less	0	635
Debt securities, Fair Value Longer than 12 months	11	14
Debt securities, Total Fair Value	11	649
Debt securities, Unrealized Losses
Debt securities, Unrealized Losses 12 months or less	0	(25)
Debt securities, Unrealized Losses Longer than 12 months	(4)	(4)
Debt securities, Total Unrealized Losses	4	29
Equity Securities [Member]
Equity Securities, Unrealized Loss Position, Fair Value
Equity securities, Fair Value 12 months or less	9,514	9,572
Equity securities, Fair Value Longer than 12 months	4,143	1,848
Equity securities, Total Fair Value	13,657	11,420
Equity Securities, Unrealized Loss
Equity securities, Unrealized Losses 12 months or less	(335)	(1,610)
Equity securities, Unrealized Losses Longer than 12 months	(1,580)	(1,638)
Equity securities, Total Unrealized Losses	$ (1,915)	$ (3,248)

Investments (Schedule of Amorti

Investments (Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost, Due in one year or less	$ 125,303
Amortized Cost, Due after one year through five years	114,399
Amortized Cost, Due after five years through ten years	64,251
Amortized Cost, Amortized Cost Due after ten years	9,109
Amortized Cost	315,029	$ 502,167
Fair Value, Due in one year or less	126,261
Fair Value, Due after one year through five years	116,086
Fair Value, Due after five years through ten years	64,191
Fair Value, Due after ten years	9,360
Fair Value	317,916	$ 507,279
Collateralized Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,967
Fair Value	$ 2,018

Pledged Investments (Narrative)

Pledged Investments (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Pledged Investments [Abstract]
Securities available-for-sale pledged, carrying value	$ 30.8	$ 29.7

Reserves for Unpaid Losses an_3

Reserves for Unpaid Losses and Loss Adjustment Expenses (Activity in the Reserves for Unpaid Losses and Loss Adjustment Expense) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Reserves for Unpaid Losses and Loss Adjustment Expenses [Abstract]
Balance at January 1	$ 789,768	$ 620,355
Less reinsurance recoverable	357,200	274,275
Net balance at January 1	432,568	346,080
Incurred related to:
Current year	207,121	253,319
Loss portfolio transfer	0	21,700
Prior years	2,553	33,259
Total incurred	209,674	308,278
Paid related to:
Current year	64,292	67,146
Loss portfolio transfer	0	21,700
Prior years	130,623	177,325
Total paid	194,915	266,171
Net balance at June 30	447,327	388,187
Plus reinsurance recoverable	368,054	367,704
Balance at June 30	$ 815,381	$ 755,891

Reserves for Unpaid Losses an_4

Reserves for Unpaid Losses and Loss Adjustment Expenses (Causes for Prior Accident Year Reserve Development by Segment) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Total unfavorable net prior year development	$ 2,553	$ 33,259
Specialty Commercial Segment [Member]
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Total unfavorable net prior year development	533	23,961
Standard Commercial Segment [Member]
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Total unfavorable net prior year development	(2,336)	2,350
Personal Segment [Member]
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Total unfavorable net prior year development	4,356	6,948
Corporate [Member]
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]
Total unfavorable net prior year development	$ 0	$ 0

Share-Based Payment Arrangeme_3

Share-Based Payment Arrangements (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, Granted			0	0
Long Term Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of incentive stock options outstanding			0
Share-based compensation arrangement by share-based payment award, non-qualified stock options to purchase number of shares			14,157
Long Term Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized	2,000,000		2,000,000
Share-based compensation arrangement by share-based payment award, restricted stock options to purchase number of shares			84,744
Stock options, Granted			0
Long Term Incentive Plan 2005 and 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 0		$ 0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested share-based compensation arrangements	200		200
Allocated share-based compensation expense (benefit)	4	$ 154	158	$ (416)
Income tax benefit (expense) of share-based payments recognized in income	1	$ 32	33	$ (88)
Employee Service Share-based Compensation Nonvested Awards, Total Compensation Cost Expected to Recognized			95
Remainder of 2021	48		48
2022	$ 47		$ 47
Restricted Stock Units (RSUs) [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of restricted stock units granted as result of meeting growth rates	50.00%		50.00%
Restricted Stock Units (RSUs) [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of restricted stock units granted as result of meeting growth rates	150.00%		150.00%
Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, grant date fair value					$ 18.10	$ 10.87	$ 10.20

Share-Based Payment Arrangeme_4

Share-Based Payment Arrangements (Summary of the Status of Stock Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Share-Based Payment Arrangements [Abstract]
Stock Options, Outstanding at January 1, 2021	14,157
Stock options, Granted	0	0
Stock Options, Exercised	0
Stock Options, Forfeited or Expired	0
Stock Options, Outstanding at June 30, 2021	14,157
Stock Options, Exercisable at June 30, 2021	14,157
Weighted Average Exercise Price, Outstanding at January 1, 2021	$ 6.99
Weighted Average Exercise Price, Granted	0
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Forfeited or Expired	0
Weighted Average Exercise Price, Outstanding at June 30, 2021	6.99
Weighted Average Exercise Price, Exercisable at June 30, 2021	$ 6.99
Average Remaining Contractual Term, Outstanding at June 30, 2021	3 months 18 days
Average Remaining Contractual Term, Exercisable at June 30, 2021	3 months 18 days
Aggregate Intrinsic Value, Outstanding at June 30, 2021	$ 0
Aggregate Intrinsic Value, Exercisable at June 30, 2021	$ 0

Share-Based Payment Arrangeme_5

Share-Based Payment Arrangements (Schedule of Options, Grants in Period and Grant Date Intrinsic Value) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cost of share-based payments (non-cash)			$ 158	$ (416)
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised	$ 0	$ 0	0	0
Cost of share-based payments (non-cash)	0	0	0	0
Income tax benefit of share-based payments recognized in income	$ 0	$ 0	$ 0	$ 0

Share-Based Payment Arrangeme_6

Share-Based Payment Arrangements (Summary of the Status of Restricted Stock Units) (Details) - Restricted Stock Units (RSUs) [Member] - shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested at January 1	228,827	353,491
Granted	0	0
Vested	(30,309)	(19,065)
Forfeited	(142,022)	(92,563)
Nonvested at June 30, 2021	56,496	241,863

Segment Information (Schedule o

Segment Information (Schedule of Business Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues [Abstract]
Revenues	$ 97,350	$ 120,293	$ 313,591	$ 349,761
Pre-Tax Income (Loss)[Abstract]
Pre-tax income (loss)	4,391	(37,792)	14,608	(102,484)
Specialty Commercial Segment [Member]
Revenues [Abstract]
Revenues	62,493	83,749	196,982	262,761
Pre-Tax Income (Loss)[Abstract]
Pre-tax income (loss)	12,620	(27,237)	28,816	(5,752)
Standard Commercial Segment [Member]
Revenues [Abstract]
Revenues	18,157	17,398	53,085	52,130
Pre-Tax Income (Loss)[Abstract]
Pre-tax income (loss)	1,957	(1,672)	347	(154)
Personal Segment [Member]
Revenues [Abstract]
Revenues	18,316	20,513	56,390	65,300
Pre-Tax Income (Loss)[Abstract]
Pre-tax income (loss)	(3,887)	(2,065)	(8,275)	(5,836)
Corporate [Member]
Revenues [Abstract]
Revenues	(1,616)	(1,367)	7,134	(30,430)
Pre-Tax Income (Loss)[Abstract]
Pre-tax income (loss)	$ (6,299)	$ (6,818)	$ (6,280)	$ (90,742)

Segment Information (Schedule_2

Segment Information (Schedule of Additional Business Segment Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Assets	$ 1,520,208	$ 1,496,717
Specialty Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	1,113,020	1,116,137
Standard Commercial Segment [Member]
Segment Reporting Information [Line Items]
Assets	199,999	183,689
Personal Segment [Member]
Segment Reporting Information [Line Items]
Assets	139,530	133,310
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	$ 67,659	$ 63,581

Reinsurance (Schedule of Reinsu

Reinsurance (Schedule of Reinsurance Ceded and Recoveries) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reinsurance [Abstract]
Ceded earned premiums	$ 75,314	$ 83,287	$ 229,478	$ 257,312
Reinsurance recoveries	$ 69,845	$ 66,395	$ 210,024	$ 222,067

Reinsurance - LPT (Details)

Reinsurance - LPT (Details) - USD ($) $ in Thousands	Jul. 16, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effects of Reinsurance [Line Items]
Ceded premiums written		$ 78,140	$ 83,408	$ 231,891	$ 239,267
Reinsurance Recoverables		515,100		515,100
LPT
Effects of Reinsurance [Line Items]
Pre-tax loss			$ 21,700
Policyholder benefits and claims incurred, ceded	$ 240,000
Ceded premiums written	92,600
Payments for Deposits with Other Institutions	96,700
Reinsurance contract, ultimate incurred losses				208,500
Reinsurance contract in excess of the first layer				32,400
Reinsurance Recoverables		$ 49,000		$ 49,000
First Layer Of Reinsurance By DARAG Bermuda [Member] | LPT
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Excess Retention, Amount Reinsured	151,200
Reinsurance Retention Policy, Amount Retained	24,900
Second Layer Of Reinsurance By DARAG Bermuda [Member] | LPT
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Amount Retained	27,800
Top Layer Of Reinsurance By DARAG Guernsey [Member] | LPT
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Amount Retained	$ 36,100

Subordinated Debt Securities (S

Subordinated Debt Securities (Summary of the Nature and Terms of the Junior Subordinated Debt and Trust) (Details) - USD ($) shares in Thousands, $ in Thousands	Aug. 23, 2007	Jun. 21, 2005	Sep. 30, 2021
Hallmark Statutory Trust I [Member]
Subordinated Borrowing [Line Items]
Principal amount of trust preferred securities	$ 25,000	$ 30,000
Hallmark Statutory Trust I [Member] | Junior subordinated debt
Subordinated Borrowing [Line Items]
Issue date		Jun. 21, 2005
Principal amount of trust preferred securities		$ 30,000
Principal amount of junior subordinated debt securities		$ 30,928
Maturity date of junior subordinated debt securities		Jun. 15, 2035
Trust common stock		928
Interest rate, per annum		Three Month LIBOR + 3.25%
Current interest rate			3.37%
Hallmark Statutory Trust I [Member] | London Interbank Offered Rate (LIBOR) [Member] | Junior subordinated debt
Subordinated Borrowing [Line Items]
Debt instrument, basis spread on variable rate		3.25%
Hallmark Statutory Trust I I [Member] | Junior subordinated debt
Subordinated Borrowing [Line Items]
Issue date	Aug. 23, 2007
Principal amount of trust preferred securities	$ 25,000
Principal amount of junior subordinated debt securities	$ 25,774
Maturity date of junior subordinated debt securities	Sep. 15, 2037
Trust common stock	774
Interest rate, per annum	Three Month LIBOR + 2.90%
Current interest rate			3.02%
Hallmark Statutory Trust I I [Member] | London Interbank Offered Rate (LIBOR) [Member] | Junior subordinated debt
Subordinated Borrowing [Line Items]
Debt instrument, basis spread on variable rate	2.90%

Senior Unsecured Notes (Details

Senior Unsecured Notes (Details) $ in Millions	Aug. 19, 2019USD ($)	Sep. 30, 2021
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital		37.2
Senior unsecured notes ("Notes") due August 15, 2029
Debt Instrument [Line Items]
Principal amount	$ 50
Interest rate	6.25%
Debt to capital ratio covenant	35.00%

Deferred Policy Acquisition C_3

Deferred Policy Acquisition Costs (Deferred Amortized Policy Acquisition Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Document and Entity Information [Abstract]
Deferred, dispositions	$ (8,163)	$ (20,939)	$ (29,327)	$ (45,342)
Amortized	10,960	21,684	36,673	45,971
Net	$ 2,797	$ 745	$ 7,346	$ 629

Earnings Per Share (Narrative)

Earnings Per Share (Narrative) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share	14,157	14,157	14,157	14,157

Earnings Per Share (Schedule of

Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Weighted average shares - basic	18,172	18,142	18,162	18,136
Effect of dilutive securities	0	0	0	0
Weighted average shares - assuming dilution	18,172	18,142	18,162	18,136

Net Periodic Pension Cost (Sche

Net Periodic Pension Cost (Schedule of Net Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Periodic Pension Cost [Abstract]
Interest cost	$ 67	$ 89	$ 202	$ 266
Amortization of net loss	43	34	130	104
Expected return on plan assets	(177)	(171)	(531)	(513)
Net periodic pension cost	(67)	(48)	(199)	(143)
Contributed amount	$ 0	$ 0	$ 0	$ 0

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Taxes [Abstract]
Effective income tax rate, continuing operations	20.80%	15.60%
Valuation allowance	$ 0		$ 0

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information (Reconciliation of Cash, Cash Equivalents and Restricted Cash to Statement of Cash Flows) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Supplemental Cash Flow Information [Abstract]
Cash and cash equivalents	$ 325,833	$ 102,580	$ 186,683
Restricted cash	3,793	5,728	17,671
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$ 329,626	$ 108,308	$ 204,354	$ 54,948

Supplemental Cash Flow Inform_4

Supplemental Cash Flow Information (Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Supplemental Cash Flow Information [Abstract]
Interest paid	$ 3,165	$ 4,845
Income taxes (recovered) paid	(4,147)	654
Receivable for securities related to investment disposals	5,613	1,568
Payable for securities related to investment purchases	$ 1,047	$ 507

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	May 05, 2020	Sep. 30, 2021	Sep. 30, 2020
Commitments and Contingencies [Abstract]
Net adverse loss development	$ 63,800
Guaranty association assessments		$ 0	$ 0

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive (Loss) Income Balances (Schedule of Accumulated Other Comprehensive (Loss) Income ) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 383
Other comprehensive loss:
Change in net actuarial gain	$ 43	$ 35	130	$ 104
Tax effect on change in net actuarial gain	(9)	(8)	(27)	(22)
Unrealized holding gains arising during the period	276	2,706	3,063	4,149
Tax effect on unrealized holding gains arising during the period	(58)	(568)	(643)	(872)
Reclassification adjustment for gains included in net income	(1,059)	(390)	(5,288)	(5,612)
Tax effect on reclassification adjustment for gains included in net income	222	82	1,110	1,179
Other comprehensive loss, net of tax	(585)	1,857	(1,655)	(1,074)
Ending Balance	(1,272)		(1,272)
Pension Liability [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(3,762)	(3,239)
Other comprehensive loss:
Change in net actuarial gain			130	104
Tax effect on change in net actuarial gain			(27)	(22)
Unrealized holding gains arising during the period			0	0
Tax effect on unrealized holding gains arising during the period			0	0
Reclassification adjustment for gains included in net income			0	0
Tax effect on reclassification adjustment for gains included in net income			0	0
Other comprehensive loss, net of tax			103	82
Ending Balance	(3,659)	(3,157)	(3,659)	(3,157)
Unrealized Gains (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			4,145	3,927
Other comprehensive loss:
Change in net actuarial gain			0	0
Tax effect on change in net actuarial gain			0	0
Unrealized holding gains arising during the period			3,063	4,149
Tax effect on unrealized holding gains arising during the period			(643)	(872)
Reclassification adjustment for gains included in net income			(5,288)	(5,612)
Tax effect on reclassification adjustment for gains included in net income			1,110	1,179
Other comprehensive loss, net of tax			(1,758)	(1,156)
Ending Balance	2,387	2,771	2,387	2,771
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			383	688
Other comprehensive loss:
Change in net actuarial gain			130	104
Tax effect on change in net actuarial gain			(27)	(22)
Unrealized holding gains arising during the period			3,063	4,149
Tax effect on unrealized holding gains arising during the period			(643)	(872)
Reclassification adjustment for gains included in net income			(5,288)	(5,612)
Tax effect on reclassification adjustment for gains included in net income			1,110	1,179
Other comprehensive loss, net of tax			(1,655)	(1,074)
Ending Balance	$ (1,272)	$ (386)	$ (1,272)	$ (386)

Leases (Narrative) (Details)

Leases (Narrative) (Details)	9 Months Ended
	Sep. 30, 2021
Lessee, Lease, Description [Line Items]
Options to extend	true
Minimum [Member]
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Remaining lease term	13 years

Leases (Components of Lease Exp

Leases (Components of Lease Expense and Other Lease Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease cost	$ 526	$ 750	$ 1,620	$ 2,291
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases	543	758	1,627	1,749
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 0	$ 436	$ 0

Leases (Component of Lease and

Leases (Component of Lease and Other Information) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 13,501	$ 13,986
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other Assets	Other Assets
Operating lease liabilities	$ 15,369	$ 15,862
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Weighted-average remaining lease term - operating leases	11 years 7 months 6 days	10 years 2 months 12 days
Weighted-average discount rate - operating leases	6.22%	5.88%
Short-term lease payments	$ 200

Leases (Maturities) (Details)

Leases (Maturities) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Future minimum lease payments under non-cancellable leases:
2021	$ 544	$ 2,172
2022	2,171	2,171
2023	2,023	1,885
2024	2,216	1,941
2025	2,450	1,975
Thereafter	18,264	11,350
Total future minimum lease payments	27,668	21,494
Less imputed interest	(12,299)	(5,632)
Total operating lease liability	$ 15,369	$ 15,862