Eastern Insurance (EIHI) 10-Q 31 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 30, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'Eastern Insurance Holdings, Inc.	'
Entity Central Index Key	'0001321268	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	7,919,527

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
ASSETS	'	'
Fixed income securities, at estimated fair value (amortized cost, $153,036; $145,486)	$153,259	$148,976
Convertible bonds, at estimated fair value (amortized cost, $26,413; $18,207)	29,616	19,747
Equity securities, at estimated fair value (cost, $17,684; $20,462)	23,103	23,200
Other long-term investments, at estimated fair value (cost, $8,000; $7,000)	11,722	9,974
Total investments	217,700	201,897
Cash and cash equivalents	51,345	48,075
Accrued investment income	915	858
Premiums receivable (net of allowance, $225; $225)	80,902	67,525
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	19,222	19,676
Deferred acquisition costs	11,571	9,497
Deferred income taxes, net	3,574	3,239
Federal income taxes recoverable	627	'
Intangible assets	3,850	4,331
Goodwill	10,752	10,752
Other assets	16,861	14,902
Total assets	417,319	380,752
LIABILITIES	'	'
Reserves for unpaid losses and loss adjustment expenses	126,466	117,728
Unearned premium reserves	90,191	73,775
Advance premium	255	672
Accounts payable and accrued expenses	23,811	23,540
Ceded reinsurance balances payable	9,113	9,273
Segregated portfolio cell dividend payable	20,805	17,354
Policyholder dividends payable	2,536	2,312
Federal income taxes payable	'	243
Total liabilities	273,177	244,897
Commitments and contingencies (Note 10)	'	'
SHAREHOLDERS' EQUITY	'	'
Series A preferred stock, par value $0, auth. shares – 5,000,000; no shares issued and outstanding	0	0
Common capital stock, par value $0, auth. shares—20,000,000; issued—11,930,714 and 11,927,714, respectively; outstanding—7,919,527 and 7,910,609, respectively	0	0
Unearned ESOP compensation	-2,057	-2,616
Additional paid in capital	118,627	117,443
Treasury stock, at cost (4,011,187 and 4,017,105 shares, respectively)	-56,446	-56,532
Retained earnings	82,749	75,169
Accumulated other comprehensive income, net	1,269	2,391
Total shareholders' equity	144,142	135,855
Total liabilities and shareholders' equity	$417,319	$380,752

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Convertible bonds, amortized cost	$26,413	$18,207
Equity securities Cost or Amortized Cost	170,720	165,948
Other long term investments, cost	8,000	7,000
Premiums receivable, allowance	225	225
Series A preferred stock, par value	$0	$0
Series A preferred stock, shares authorized	5,000,000	5,000,000
Series A preferred stock, shares issued	0	0
Series A preferred stock, shares outstanding	0	0
Common capital stock, par value	$0	$0
Common capital stock, shares authorized	20,000,000	20,000,000
Common capital stock, shares issued	11,930,714	11,927,714
Common capital stock, outstanding shares	7,919,527	7,910,609
Treasury stock, at cost	4,011,187	4,017,105
Fixed income securities [Member]	'	'
Fixed income securities, amortized cost	153,036	145,486
Equity securities - available for sale [Member]	'	'
Equity securities Cost or Amortized Cost	$17,684	$20,462

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUE	'	'	'	'
Net premiums earned	$45,129	$41,397	$132,982	$116,618
Net investment income	955	892	2,778	2,906
Change in equity interest in limited partnerships	-10	290	748	738
Net realized investment gains (losses)	2,255	1,023	3,162	1,511
Other revenue	29	84	163	239
Total revenue	48,358	43,686	139,833	122,012
EXPENSES	'	'	'	'
Losses and loss adjustment expenses incurred	28,948	27,849	84,672	76,335
Acquisition and other underwriting expenses	5,426	5,486	16,147	15,391
Other expenses	7,868	6,224	21,591	18,119
Amortization of intangibles	160	202	480	605
Policyholder dividend expense	309	493	807	715
Segregated portfolio dividend expense	441	29	2,154	1,414
Total expenses	43,152	40,283	125,851	112,579
Income before income taxes	5,206	3,403	13,982	9,433
Income tax expense	1,514	617	4,054	2,377
Net income (loss)	3,692	2,786	9,928	7,056
Other comprehensive income (loss)	'	'	'	'
Unrealized holding gains arising during period, net of tax of $472, $682, $396 and $1,180	877	1,272	736	2,196
Amortization of unrecognized benefit plan amounts, net of tax of $4, $2, $12 and $7	8	4	22	13
Less: Reclassification adjustment for gains included in net income, net of tax of $301, $152, $692 and $307	1,154	243	1,880	536
Other comprehensive (loss) income	-269	1,033	-1,122	1,673
Comprehensive income	$3,423	$3,819	$8,806	$8,729
Basic earnings per share (See Note 4):	'	'	'	'
Basic earnings per share	$0.48	$0.37	$1.29	$0.92
Diluted earnings per share (See Note 4):	'	'	'	'
Diluted earnings per share	$0.48	$0.36	$1.29	$0.90

Consolidated_Statements_of_Ope1

Consolidated Statements of Operations and Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements of Operations and Comprehensive Income (Loss)	'	'	'	'
Unrealized holding gains arising during period, tax	$472	$682	$396	$1,180
Amortization of unrecognized benefit plan amounts, tax	4	2	12	7
Reclassification adjustment for gains (losses) included in net income (loss), tax	$301	$152	$692	$307

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)	Series A Preferred Stock	Common Capital Stock	Unearned ESOP Compensation	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss) Net of Tax	Total
In Thousands, except Share data		USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)	USD ($)
Balance, value at Dec. 31, 2011	'	$0	($3,364)	$116,272	($54,109)	$66,910	$2,550	$128,259
Series A Preferred Stock, Shares Outstanding, Beginning Balance at Dec. 31, 2011	0	'	'	'	'	'	'	'
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2011	'	7,935,446	'	'	'	'	'	'
ESOP shares released	'	'	561	318	'	'	'	879
Equity awards, shares	'	141,700	'	'	'	'	'	'
Equity awards, value	'	'	'	510	'	'	'	510
Tax benefit related to stock compensation	'	'	'	11	'	'	'	11
Repurchase of common stock, shares	'	-166,537	'	'	'	'	'	'
Repurchase of common stock, value	'	'	'	'	-2,423	'	'	-2,423
Shareholder dividend	'	'	'	'	'	-1,620	'	-1,620
Net income (loss)	'	'	'	'	'	7,056	'	7,056
Other comprehensive income (loss), net of tax	'	'	'	'	'	'	1,673	1,673
Balance, value at Sep. 30, 2012	'	'	-2,803	117,111	-56,532	72,346	4,223	134,345
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2012	'	7,910,609	'	'	'	'	'	'
Balance, value at Jun. 30, 2012	'	'	-2,991	116,772	-56,532	70,112	3,190	130,551
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2012	'	7,910,609	'	'	'	'	'	'
ESOP shares released	'	'	188	130	'	'	'	318
Equity awards, value	'	'	'	201	'	'	'	201
Tax benefit related to stock compensation	'	'	'	8	'	'	'	8
Shareholder dividend	'	'	'	'	'	-552	'	-552
Net income (loss)	'	'	'	'	'	2,786	'	2,786
Other comprehensive income (loss), net of tax	'	'	'	'	'	'	1,033	1,033
Balance, value at Sep. 30, 2012	'	'	-2,803	117,111	'	72,346	4,223	134,345
Balance, value at Dec. 31, 2012	'	'	-2,616	117,443	-56,532	75,169	2,391	135,855
Series A Preferred Stock, Shares Outstanding, Beginning Balance at Dec. 31, 2012	'	'	'	'	'	'	'	0
Common Stock, Shares, Outstanding, Beginning Balance at Dec. 31, 2012	'	7,910,609	'	'	'	'	'	7,910,609
ESOP shares released	'	'	559	527	'	'	'	1,086
Equity awards, shares	'	3,000	'	'	'	'	'	'
Equity awards, value	'	'	'	602	'	'	'	602
Issuance of shares under stock compensation plan, shares	'	5,918	'	'	'	'	'	'
Issuance of shares under stock compensation plan, value	'	'	'	'	86	-1	'	85
Tax benefit related to stock compensation	'	'	'	55	'	29	'	84
Shareholder dividend	'	'	'	'	'	-2,376	'	-2,376
Net income (loss)	'	'	'	'	'	9,928	'	9,928
Other comprehensive income (loss), net of tax	'	'	'	'	'	'	-1,122	-1,122
Balance, value at Sep. 30, 2013	'	'	-2,057	118,627	-56,446	82,749	1,269	144,142
Series A Preferred Stock, Shares Outstanding, Ending Balance at Sep. 30, 2013	0	'	'	'	'	'	'	0
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2013	'	7,919,527	'	'	'	'	'	7,919,527
Balance, value at Jun. 30, 2013	'	'	-2,246	118,197	-56,529	79,841	1,538	140,801
Common Stock, Shares, Outstanding, Beginning Balance at Jun. 30, 2013	'	7,910,827	'	'	'	'	'	'
ESOP shares released	'	'	189	218	'	'	'	407
Equity awards, shares	'	3,000	'	'	'	'	'	'
Equity awards, value	'	'	'	205	'	'	'	205
Issuance of shares under stock compensation plan, shares	'	5,700	'	'	'	'	'	'
Issuance of shares under stock compensation plan, value	'	'	'	'	83	-1	'	82
Tax benefit related to stock compensation	'	'	'	7	'	11	'	18
Shareholder dividend	'	'	'	'	'	-794	'	-794
Net income (loss)	'	'	'	'	'	3,692	'	3,692
Other comprehensive income (loss), net of tax	'	'	'	'	'	'	-269	-269
Balance, value at Sep. 30, 2013	'	'	($2,057)	$118,627	($56,446)	$82,749	$1,269	$144,142
Series A Preferred Stock, Shares Outstanding, Ending Balance at Sep. 30, 2013	0	'	'	'	'	'	'	0
Common Stock, Shares, Outstanding, Ending Balance at Sep. 30, 2013	'	7,919,527	'	'	'	'	'	7,919,527

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net income (loss)	$9,928	$7,056
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation	583	599
Net amortization of bond premium/discount	700	900
Net realized investment gains	-3,162	-1,511
Change in equity interest in limited partnerships	-748	-738
Deferred tax benefit	140	-1,519
Stock compensation expense	1,688	1,389
Intangible asset amortization	480	605
Changes in assets and liabilities:	'	'
Accrued investment income	-57	-87
Premiums receivable	-13,377	-15,809
Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses	454	-2,750
Deferred acquisition costs	-2,074	-797
Other assets	-1,985	-1,896
Reserves for unpaid losses and loss adjustment expenses	8,738	9,608
Unearned and advance premium	15,999	16,196
Ceded reinsurance balances payable	-160	-636
Accounts payable and accrued expenses	93	278
Federal income taxes recoverable/payable	-870	-165
Policyholder dividends payable	224	263
Segregated portfolio cell dividend payable	2,411	1,243
Net cash provided by operating activities	19,005	12,229
Cash flows from investing activities:	'	'
Purchase of fixed income securities	-53,904	-37,383
Purchase of equity securities	-3,258	-7,246
Purchase of other long-term investments	-1,000	'
Proceeds from sale of fixed income securities	15,672	17,274
Proceeds from maturities/calls of fixed income securities	21,949	9,865
Proceeds from the sale of equity securities	7,570	5,582
Proceeds from sale of other long-term investments	'	1,248
Purchase of equipment	-557	-617
Net cash used in investing activities	-13,528	-11,277
Cash flows from financing activities:	'	'
Repurchase of common stock	'	-2,423
Shareholder dividend	-2,376	-1,620
Issuance of shares under stock compensation plan	85	'
Tax benefit related to stock compensation	84	11
Net cash used in financing activities	-2,207	-4,032
Net decrease in cash and cash equivalents	3,270	-3,080
Cash and cash equivalents, beginning of period	48,075	52,448
Cash and cash equivalents, end of period	$51,345	$49,368

Background_and_Nature_of_Opera

Background and Nature of Operations	9 Months Ended
	Sep. 30, 2013
Background and Nature of Operations [Abstract]	'
Background and Nature of Operations	'
	1. Background and Nature of Operations
	Eastern Insurance Holdings, Inc. (“EIHI”) is an insurance holding company offering workers’ compensation insurance and reinsurance products through its direct and indirect wholly-owned subsidiaries, Global Alliance Holdings, Ltd. (“Global Alliance”), Eastern Alliance Insurance Company (“Eastern Alliance”), Allied Eastern Indemnity Company (“Allied Eastern”), Eastern Advantage Assurance Company (“Eastern Advantage”), Employers Security Insurance Company (“Employers Security”) Employers Alliance, Inc. (“Employers Alliance”), Eastern Re Ltd., SPC (“Eastern Re”), and Eastern Services Corporation (“Eastern Services”), collectively referred to as the “Company.”
	In September 2013, Employers Security Insurance Company was merged into and with Eastern Alliance Insurance Company.
	The Company currently operates in three segments: workers’ compensation insurance, segregated portfolio cell reinsurance, and corporate/other.

Significant_Accounting_Policie

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Significant Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	2. Significant Accounting Policies
	Basis of Presentation
	The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the U.S. Securities and Exchange Commission. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments, being normal, recurring adjustments, necessary for a fair statement of the financial position and results of operations of the Company for the periods presented have been included. The results of operations for an interim period are not necessarily indicative of the results for an entire year. These financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto as of and for the year ended December 31, 2012 included in the Company’s Annual Report on Form 10-K, which was filed with the U.S. Securities and Exchange Commission on March 8, 2013.
	All inter-company transactions and related account balances have been eliminated in consolidation.
	Certain amounts in the prior year consolidated financial statements have been reclassified to conform to the current year presentation.
	During the second quarter of 2013, management changed its accounting policy related to the classification of premium amortization and discount accretion recognized in its convertible bond portfolio. The Company previously reported amortization/accretion related to its convertible bond portfolio as a component of net investment income. The Company’s convertible bond portfolio is reported at estimated fair value with changes in fair value reported as a realized gain or loss. Due to the nature of convertible securities, certain securities may be purchased at a significant premium (commonly referred to as “conversion premium”) as a result of the underlying value of the issuer’s common stock, and the conversion premium can have a significant impact on net investment income as it is amortized. Management believes the conversion premium is reflective of the fair value of the convertible security at acquisition and should be reflected as a component of the change in fair value reported as a realized gain or loss. As a result, the Company has changed its policy for recognizing amortization/accretion related to its convertible bond portfolio and will report amortization/accretion as a component of the change in estimated fair value in net realized investment gains (losses) on the consolidated statements of operations and comprehensive income (loss). This change in accounting policy had no impact of the Company’s consolidated financial position or results of operations.  Prior period amounts have not been reclassified as the amounts were immaterial.
	Use of Estimates
	The preparation of the unaudited interim consolidated financial statements requires management to make estimates and assumptions that affect the amount of reported assets and liabilities and disclosures of contingent assets and liabilities as of the date of the unaudited interim consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant estimates in the unaudited interim consolidated financial statements include reserves for unpaid losses and loss adjustment expenses (“LAE”), earned but unbilled premium, deferred acquisition costs, return premiums under reinsurance contracts, and current and deferred income taxes. Actual results could differ from these estimates.

Agreement_and_Plan_of_Merger_w

Agreement and Plan of Merger with ProAssurance Corporation	9 Months Ended
	Sep. 30, 2013
Agreement and Plan of Merger with ProAssurance Corporation [Abstract]	'
Agreement and Plan of Merger with ProAssurance Corporation	'
	3. Agreement and Plan of Merger with ProAssurance Corporation
	On September 23, 2013, EIHI entered into an Agreement and Plan of Merger (the “Merger Agreement”) with ProAssurance Corporation (“ProAssurance”) and PA Merger Company, a wholly owned subsidiary of ProAssurance (“Acquisition Sub”), pursuant to which, upon the terms and subject to the conditions set forth in the Merger Agreement, Acquisition Sub will merge with and into EIHI, with EIHI surviving the merger as a wholly owned subsidiary of ProAssurance.
	The merger is expected to be finalized in January 2014.  On the effective date of the merger, each share of EIHI common stock issued and outstanding immediately prior to the effective date, including any allocated and unallocated shares held by EIHI’s employee stock ownership plan and any shares of restricted stock, will be automatically cancelled and converted into the right to receive $24.50 in cash (the “Cash Consideration”). Each option to purchase shares of EIHI common stock issued and outstanding immediately prior to the closing date, whether or not vested and exercisable, will be cancelled and converted into the right to receive the product of (i) the number of shares of EIHI common stock that would have been acquired upon the exercise of such stock option, multiplied by (ii) the excess, if any, of the Cash Consideration over the exercise price to acquire a share of EIHI common stock under such stock option.
	Consummation of the merger is subject to customary conditions, including (i) the approval of EIHI’s shareholders, (ii) receipt of antitrust and insurance regulatory approvals, (iii) the absence of any law, order or injunction prohibiting the merger, (iv) the accuracy of each party’s representations and warranties (subject to customary materiality qualifiers), and (v) each party’s compliance with its covenants and agreements contained in the Merger Agreement.  In addition, ProAssurance’s obligation to consummate the merger is subject to no occurrence, circumstance, or combination thereof, shall have occurred that, individually or in the aggregate, has, or is reasonably likely to have, a material adverse effect on EIHI.  The merger is not subject to any financing condition.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	4. Earnings Per Share
	Basic earnings per share are computed by dividing net income (loss) by the weighted average number of shares outstanding for the respective period. Diluted earnings per share are computed by dividing net income (loss) by the weighted average number of shares outstanding for the period, including dilutive potential common shares outstanding for the period.
	Consolidated net income, basic shares outstanding, diluted shares outstanding, basic earnings per share, diluted earnings per share and cash dividends per share for the three and nine months ended September 30, 2013 and 2012 were as follows (in thousands, except share and per share data):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Net income for basic and diluted earnings per share	$	3,692	$	2,786	$	9,928	$	7,056
	Less: Dividends declared – common and unvested restricted share units		-794		-552		-2,376		-1,620
	Undistributed earnings		2,898		2,234		7,552		5,436
	Percent allocated to common shareholders		98.5%		98.1%		98.5%		98.1%
			2,855		2,192		7,439		5,333
	Add: Dividends declared – common shares		782		543		2,340		1,589
		$	3,637	$	2,735	$	9,779	$	6,922
	Denominator for basic earnings per share		7,586,843		7,480,526		7,558,707		7,539,870
	Effect of dilutive securities		54,228		146,340		38,907		139,633
	Denominator for diluted earnings per common share		7,641,071		7,626,866		7,597,614		7,679,503
	Basic earnings per share	$	0.48	$	0.37	$	1.29	$	0.92
	Diluted earnings per share	$	0.48	$	0.36	$	1.29	$	0.90
	Cash dividends per share	$	0.11	$	0.07	$	0.31	$	0.21
	The following table provides a summary of the equity awards that were not included in the Company’s earnings per share calculation because to do so would have been anti-dilutive:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Total outstanding equity awards		1,427,585		1,387,000		1,427,585		1,387,000
	Dilutive equity awards		-54,228		-146,340		-38,907		-139,633
	Equity awards excluded from earnings per share calculation		1,373,357		1,240,660		1,388,678		1,247,367

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	5. Fair Value Measurements
	The Company’s assets and liabilities that are measured at fair value on a recurring basis are segregated between those assets and liabilities that are valued based on quoted prices (unadjusted) in active markets for identical assets or liabilities, which the reporting entity can access at the measurement date (Level 1), direct or indirect observable inputs other than Level 1 quoted prices (Level 2), or unobservable inputs to the extent that observable inputs are not available (Level 3).
	The following is a description of the Company’s categorization of the inputs used in the recurring fair value measurements of its financial assets included in its consolidated balance sheets as of September 30, 2013 and December 31, 2012:
	Level 1—Represents financial assets whose fair value is determined based upon observable unadjusted quoted market prices for identical financial assets in active markets that the Company can access. An example of a Level 1 input utilized to measure fair value includes the closing price of one share of common stock on an active exchange market. The Company considers U.S. Treasuries and equity securities as Level 1 assets.
	Level 2—Represents financial assets whose fair value is determined based upon: quoted market prices for similar assets in active markets; quoted market prices for identical assets in inactive markets; inputs other than quoted market prices that are observable for the asset such as interest rates or yield curves; or other inputs derived principally from or corroborated from other observable market information. An example of a Level 2 input utilized to measure fair value, specifically for the Company’s fixed income portfolio, is “matrix pricing.” “Matrix pricing” relies on observable inputs from active markets other than quoted market prices including, but not limited to, benchmark securities and yields, latest reported trades, quotes from brokers or dealers, issuer spreads, bids, offers, and other relevant reference data to determine fair value. “Matrix pricing” is used to measure the fair value of fixed income securities where obtaining individual quoted market prices is impractical. The Company considers U.S. Government agencies, municipal bonds, corporate bonds, mortgage-backed securities, collateralized mortgage obligations, asset-backed securities, and convertible bonds as Level 2 assets.
	Level 3—Represents financial assets whose fair value is determined based upon inputs that are unobservable, including the Company’s own determinations of the assumptions that a market participant would use in pricing the asset.
	The following table provides a summary of the fair value measurements of the Company’s fixed income securities, convertible bonds, and equity securities, as of September 30, 2013 and December 31, 2012, excluding the segregated portfolio cell reinsurance segment (in thousands):
				Fair Value Measurements at Reporting
				Date Using
		9/30/13		Level 1		Level 2		Level 3
	Fixed income securities—available for sale:
	U.S. Treasuries and government agencies	$	19,996	$	12,779	$	7,217	$	—
	States, municipalities, and political subdivisions		43,926		—		43,926		—
	Corporate securities		17,655		—		17,655		—
	Residential mortgage-backed securities		23,529		—		23,529		—
	Commercial mortgage-backed securities		161		—		161		—
	Collateralized mortgage obligations		14,326		—		14,326		—
	Other structured securities		1,023		—		1,023		—
	Convertible bonds		29,616		—		29,616		—
	Equity securities—available for sale		14,178		14,178		—		—
	Total	$	164,410	$	26,957	$	137,453	$	—
				Fair Value Measurements at Reporting
				Date Using
		12/31/12		Level 1		Level 2		Level 3
	Fixed income securities—available for sale:
	U.S. Treasuries and government agencies	$	15,865	$	10,743	$	5,122	$	—
	States, municipalities, and political subdivisions		45,150		—		45,150		—
	Corporate securities		10,285		—		10,285		—
	Residential mortgage-backed securities		28,434		—		28,434		—
	Commercial mortgage-backed securities		167		—		167		—
	Collateralized mortgage obligations		17,122		—		17,122		—
	Other structured securities		1,023		—		1,023		—
	Convertible bonds		19,747		—		19,747		—
	Equity securities—available for sale		15,588		15,588		—		—
	Total	$	153,381	$	26,331	$	127,050	$	—
	There were no transfers between Level 1 and Level 2 securities for the three and nine months ended September 30, 2013.
	The estimated fair values of the Company’s investments in fixed income securities, convertible bonds, and equity securities are based on prices provided by an independent, nationally recognized pricing service. The prices provided by the independent pricing service are based on quoted market prices, when available, non-binding broker quotes, or matrix pricing. The independent pricing service provides a single price or quote per security and the Company did not adjust security prices during the three and nine months ended September 30, 2013 and 2012. Management has controls in place to validate the reasonableness of fair values provided by the independent pricing service, including testing the fair value of a sample of securities on a quarterly basis by comparing fair values from different pricing sources. Fixed income securities include U.S. Treasuries, agencies backed by the U.S. Government, municipal bonds, corporate bonds, mortgage-backed securities, collateralized mortgage obligations, and asset-backed securities.
	The Company’s fixed income securities and convertible bonds consist primarily of publicly traded securities for which there are observable inputs and/or broker quotes. Most fixed income security prices provided by the independent pricing service are based on observable inputs and, therefore, are classified as Level 2 securities. The Company does not hold any fixed income securities, for which pricing was based on significant unobservable inputs; therefore, the Company has not classified any of its fixed income securities as Level 3 securities.
	The Company’s equity securities consist primarily of exchange traded funds and equity securities of natural gas companies for which there is an active market and quoted market prices; therefore, the Company has classified its equity securities as Level 1 securities. The estimated fair values of the Company’s exchange traded funds are based on published net asset value (“NAV”) per share.
	The estimated fair value of the Company’s equity securities, excluding equity securities in the segregated portfolio cell reinsurance segment, as of September 30, 2013 and December 31, 2012, by investment strategy and/or industry, are as follows (in thousands):
		2013		2012
	Large growth fund	$	3,768	$	3,156
	Foreign large blend fund		621		554
	Diversified emerging markets fund		823		911
	Large value fund		4,299		7,062
	Foreign large value fund		424		378
	Foreign large growth fund		2,135		1,881
	Natural gas industry		1,672		1,263
	Financial institutions		434		383
	Other		2		—
	Total	$	14,178	$	15,588
	Other long-term investments include the Company’s interest in various limited partnerships, including a low volatility multi-strategy fund of funds, a structured finance opportunity fund, and an open-ended investment fund. The Company records its investment in the limited partnerships using the equity method. The carrying value of the Company’s limited partnership investments are based on the Company’s allocable share of the limited partnerships’ NAV. Changes in the Company’s investments are based on statements received directly from the limited partnership and/or the limited partnership’s administrator. The estimated fair values of the underlying investments in the limited partnerships may be based on Level 1, Level 2, or Level 3 inputs, or a combination thereof. The Company considers its limited partnership investments as Level 3 investments.
	As of September 30, 2013 and December 31, 2012, the estimated fair values of the Company’s limited partnership investments, by investment strategy, were as follows (in thousands):
		2013		2012
	Multi-strategy fund of funds	$	7,578	$	6,063
	Structured finance opportunity fund		3,451		3,278
	Open-ended investment fund		693		633
	Total	$	11,722	$	9,974
	The activity in the Company’s limited partnership investments for the three and nine months ended September 30, 2013 and 2012 was as follows (in thousands):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Balance, beginning of period	$	11,732	$	10,657	$	9,974	$	10,209
	Contributions		—		—		1,000		—
Withdrawals		—		-1,243		—		-1,243
Unrealized change in interest		-10		290		748		738
Balance, end of period	$	11,722	$	9,704	$	11,722	$	9,704
The change in interest in the Company’s limited partnership investments is included in the change in equity interest in limited partnerships in the consolidated statements of operations and comprehensive income.

Investments

Investments	9 Months Ended
	Sep. 30, 2013
Investments [Abstract]	'
Investments	'
	6. Investments
	The following tables provide the amortized cost and estimated fair value of the Company’s fixed income and equity securities as of September 30, 2013 and December 31, 2012 (in thousands):
		Cost or		Gross		Gross
		Amortized		Unrealized		Unrealized		Estimated
	30-Sep-13	Cost		Gains		Losses		Fair Value
	U.S. Treasuries and government agencies	$	23,575	$	253	$	-82	$	23,746
	States, municipalities, and political subdivisions		43,030		1,196		-300		43,926
	Corporate securities		46,725		138		-315		46,548
	Residential mortgage-backed securities		24,054		236		-761		23,529
	Commercial mortgage-backed securities		149		12		—		161
	Collateralized mortgage obligations		14,485		88		-247		14,326
	Other structured securities		1,018		13		-8		1,023
	Total fixed income securities		153,036		1,936		-1,713		153,259
	Equity securities		17,684		5,558		-139		23,103
	Total fixed income and equity securities	$	170,720	$	7,494	$	-1,852	$	176,362
		Cost or		Gross		Gross
		Amortized		Unrealized		Unrealized		Estimated
	31-Dec-12	Cost		Gains		Losses		Fair Value
	U.S. Treasuries and government agencies	$	19,780	$	364	$	-5	$	20,139
	States, municipalities, and political subdivisions		42,942		2,239		-31		45,150
	Corporate securities		36,624		321		-4		36,941
	Residential mortgage-backed securities		27,983		481		-30		28,434
	Commercial mortgage-backed securities		148		19		—		167
	Collateralized mortgage obligations		17,009		172		-59		17,122
	Other structured securities		1,000		23		—		1,023
	Total fixed income securities		145,486		3,619		-129		148,976
	Equity securities		20,462		2,877		-139		23,200
	Total fixed income and equity securities	$	165,948	$	6,496	$	-268	$	172,176
	Corporate securities include an investment in a fixed income mutual fund with a cost and estimated fair value of $38,767 and $38,491, respectively, as of September 30, 2013 and a cost and estimated fair value of $26,600 and $26,656 as of December 31, 2012. The fixed income mutual fund’s investment objective is to provide a total return that is consistent with the preservation of capital through investing in high grade U.S. Dollar fixed income securities with a maximum maturity not exceeding five years.
	Other structured securities held as of September 30, 2013 and December 31, 2012 include two asset-backed securities collateralized by auto loan receivables and one security in an equipment trust made up of fixed retail installment contracts and retail installment loans.
	The amortized cost and estimated fair value of fixed income securities and convertible bonds, excluding the Company’s investment in the fixed income mutual fund, as of September 30, 2013, by contractual maturity, are shown below (in thousands). Expected maturities could differ from contractual maturities because borrowers may have the right to call or prepay obligations, with or without call or prepayment penalties.
		Amortized		Estimated
		Cost		Fair Value
	Less than one year	$	12,863	$	13,524
	One through five years		46,436		48,244
	Five through ten years		22,535		23,201
	Greater than ten years		17,393		18,473
	Mortgage/asset-backed securities		39,727		39,039
	Total	$	138,954	$	142,481
	The gross unrealized losses and estimated fair value of fixed income and equity securities, excluding those securities in the segregated portfolio cell reinsurance segment, classified as available-for-sale by category and length of time an individual security has been in a continuous unrealized position as of September 30, 2013 and December 31, 2012 are as follows (in thousands):
		Less Than 12 Months					12 Months or More					Total
		Estimated		Gross			Estimated		Gross			Estimated		Gross
		Fair		Unrealized		# of	Fair		Unrealized		# of	Fair		Unrealized		# of
	30-Sep-13	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
	U.S. Treasuries and government agencies	$	2,952	$	-82	9	$	—	$	—	—	$	2,952	$	-82	9
	States, municipalities, and political subdivisions		13,249		-300	62		—		—	—		13,249		-300	62
	Corporate securities		11,451		-95	11		—		—	—		11,451		-95	11
	Residential mortgage-backed securities		16,064		-761	20		—		—	—		16,064		-761	20
	Collateralized mortgage obligations		9,173		-233	17		799		-14	4		9,972		-247	21
	Other structured securities		10		-8	1		—		—	—		10		-8	1
	Total fixed income securities		52,899		-1,479	120		799		-14	4		53,698		-1,493	124
	Equity securities		1,142		-139	6		—		—	—		1,142		-139	6
	Total fixed income and equity securities	$	54,041	$	-1,618	126	$	799	$	-14	4	$	54,840	$	-1,632	130
		Less Than 12 Months					12 Months or More					Total
		Estimated		Gross			Estimated		Gross			Estimated		Gross
		Fair		Unrealized		# of	Fair		Unrealized		# of	Fair		Unrealized		# of
	31-Dec-12	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
	U.S. Treasuries and government agencies	$	594	$	-5	1	$	—	$	—	—	$	594	$	-5	1
	States, municipalities, and political subdivisions		3,922		-31	17		—		—	—		3,922		-31	17
	Residential mortgage-backed securities		11,922		-30	10		—		—	—		11,922		-30	10
	Collateralized mortgage obligations		4,943		-56	9		122		-3	2		5,065		-59	11
	Total fixed income securities		21,381		-122	37		122		-3	2		21,503		-125	39
	Equity securities		1,034		-135	11		—		—	—		1,034		-135	11
Total fixed income and equity securities	$	22,415	$	-257	48	$	122	$	-3	2	$	22,537	$	-260	50
Note: The Company has excluded the segregated portfolio cell reinsurance segment’s gross unrealized losses from the above table because changes in the estimated fair value of the segregated portfolio cell reinsurance segment’s fixed income and equity securities inures to the segregated portfolio cell dividend participant and, accordingly, is included in the segregated portfolio cell dividend payable and the related segregated portfolio dividend expense in the Company’s consolidated balance sheets and consolidated statement of operations and comprehensive income (loss), respectively. Management believes the exclusion of the segregated portfolio cell reinsurance segment from this disclosure provides a more transparent understanding of gross unrealized losses in the Company’s fixed income and equity security portfolios that could impact its consolidated financial position or results of operations.
Management has evaluated the unrealized losses related to its fixed income securities and determined that they are primarily due to a fluctuation in interest rates and not to credit issues of the issuer or the underlying assets in the case of asset-backed securities. The Company does not intend to sell the fixed income securities and it is not more likely than not that the Company will be required to sell the fixed income securities before recovery of their amortized cost bases, which may be maturity; therefore, management does not consider the fixed income securities to be other–than-temporarily impaired as of September 30, 2013.
Management has evaluated the unrealized losses related to its equity securities and determined that they are primarily related to the current market conditions and not due to underlying issues related to the issuer or the industry in which the issuer operates. The equity securities have been in an unrealized loss position for less than twelve months and none of the securities had an estimated fair value less than 80% of its cost basis. The Company does not intend to sell the equity securities and it is not more likely than not that the Company will be required to sell the equity securities before recovery of their cost bases; therefore, management does not consider the equity securities to be other-than-temporarily impaired as of September 30, 2013.
The following table provides information related to net realized investment gains for the three and nine months ended September 30, 2013 and 2012 (in thousands):
	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Gross realized investment gains:
Fixed income securities	$	3	$	2	$	10	$	190
Convertible bonds		256		492		1,102		921
Equity securities		1,253		38		1,576		498
Other		—		5		—		5
Gross realized investment gains		1,512		537		2,688		1,614
Gross realized investment losses:
Fixed income securities		-41		—		-42		—
Convertible bonds		-8		-63		-35		-86
Equity securities		—		—		-10		-52
Other		—		—		—		-641
Gross realized investment losses		-49		-63		-87		-779
Other-than-temporary investment impairments		—		-40		—		-127
Change in fair value of convertible bonds		792		589		561		803
Net realized investment gains	$	2,255	$	1,023	$	3,162	$	1,511
Other-than-temporary impairments recognized for the three months ended September 30, 2012 reflect one mutual fund that had been in and unrealized loss position for more than twelve months. Other-than-temporary impairments recognized for the nine months ended September 30, 2012 reflect two mutual funds that had been in and unrealized loss position for more than twelve months.
Net investment income for the three and nine months ended September 30, 2013 and 2012 was as follows (in thousands):
	Three Months Ended September 30,				Nine Months Ended September 30,
	2013		2012		2013		2012
Fixed income and convertible bond securities	$	1,048	$	964	$	3,023	$	3,025
Equity securities		116		90		251		260
Cash and cash equivalents		2		3		8		22
Other		—		28		62		126
Gross investment income		1,166		1,085		3,344		3,433
Investment expenses		-211		-193		-566		-527
Net investment income	$	955	$	892	$	2,778	$	2,906

Reserves_for_Unpaid_Losses_and

Reserves for Unpaid Losses and Loss Adjustment Expenses	9 Months Ended
	Sep. 30, 2013
Reserves for Unpaid Losses and Loss Adjustment Expenses [Abstract]	'
Reserves for Unpaid Losses and Loss Adjustment Expenses	'
	7. Reserves for Unpaid Losses and Loss Adjustment Expenses
	The following table provides a summary of the activity in the Company’s reserves for unpaid losses and LAE for the three and nine months ended September 30, 2013 and 2012 (in thousands):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Balance, beginning of period	$	123,365	$	111,521	$	117,728	$	106,077
	Reinsurance recoverables on unpaid losses and LAE		14,073		14,539		15,084		11,805
	Net balance, beginning of period		109,292		96,982		102,644		94,272
	Incurred related to:
	Current year		28,990		28,549		84,268		76,877
	Prior year		-42		-700		404		-542
	Total incurred		28,948		27,849		84,672		76,335
	Paid related to:
	Current year		15,183		13,181		28,157		25,246
	Prior year		11,257		10,952		47,359		44,663
	Total paid		26,440		24,133		75,516		69,909
	Net balance, end of period		111,800		100,698		111,800		100,698
	Reinsurance recoverables on unpaid losses and LAE		14,666		14,987		14,666		14,987
	Balance, end of period	$	126,466	$	115,685	$	126,466	$	115,685
	Incurred losses by segment were as follows for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
	Three Months Ended September 30, 2013
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	23,406	$	5,789	$	29,195
	Current period discount		-50		-155		-205
	Prior year, gross of discount		—		-188		-188
	Accretion of prior period discount		—		146		146
	Total incurred	$	23,356	$	5,592	$	28,948
	Three Months Ended September 30, 2012
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	22,544	$	6,327	$	28,871
	Current period discount		-179		-143		-322
	Prior year, gross of discount		—		-781		-781
	Accretion of prior period discount		—		81		81
	Total incurred	$	22,365	$	5,484	$	27,849
	Nine Months Ended September 30, 2013
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	69,387	$	17,376	$	86,763
	Current period discount		-1,927		-568		-2,495
	Prior year, gross of discount		—		-1,726		-1,726
	Accretion of prior period discount		1,546		584		2,130
	Total incurred	$	69,006	$	15,666	$	84,672
	Nine Months Ended September 30, 2012
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	61,979	$	17,384	$	79,363
	Current period discount		-1,929		-557		-2,486
	Prior year, gross of discount		—		-2,361		-2,361
	Accretion of prior period discount		1,430		389		1,819
	Total incurred	$	61,480	$	14,855	$	76,335
For the three and nine months ended September 30, 2013 and 2012, the estimates of ultimate losses and LAE for prior accident periods produced from our actuarial methods were reasonably consistent, in the aggregate, with the estimates we prepared as of December 31, 2012. During the second quarter of 2013, however, there were some deviations, by accident year, between the actuarial indications and recorded reserves. Based on consideration of the credibility of the higher than expected loss experience on older accident periods and the robustness of the recent accident period loss ratio, management adjusted the spread of the recorded reserves by accident period to align the reserves with the actuarial indications during the second quarter of 2013. In the aggregate, the Company did not recognize any development on prior accident period workers compensation insurance reserves for the three and nine months ended September 30, 2013.
The Company recognized favorable development in its segregated portfolio cell reinsurance segment of $188 and $1,726 for the three and nine months ended September 30, 2013, respectively, compared to favorable development of $781 and $2,361 for the same periods in 2012. The favorable development primarily reflects the impact of claim settlements for amounts at, or less than, previously established case and IBNR reserves. Prior period reserve development in the segregated portfolio cell reinsurance segment results in an increase or decrease in the segment’s losses and LAE incurred, and a corresponding decrease or increase in the segregated portfolio cell dividend expense.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2013
Segment Information [Abstract]	'
Segment Information	'
	8. Segment Information
	The Company currently operates in three business segments.
	Workers’ Compensation Insurance
	The Company offers traditional workers’ compensation insurance coverage to employers, primarily in the Mid-Atlantic, Southeast, Midwest and Gulf South regions of the United States. The Company’s workers’ compensation products include guaranteed cost policies, policyholder dividend policies, retrospectively-rated policies, deductible policies and alternative market programs.
	Net premiums earned in the workers’ compensation insurance segment for the three and nine months ended September 30, 2013 and 2012 were as follows (in thousands):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Guaranteed cost policies	$	27,601	$	24,629	$	81,310	$	69,813
	Dividend policies		4,711		5,144		13,982		13,893
	Deductible policies		1,905		1,523		5,750		4,717
	Retrospectively-rated policies		1,661		1,885		4,913		4,395
	Total	$	35,878	$	33,181	$	105,955	$	92,818
	Segregated Portfolio Cell Reinsurance
	The Company offers alternative market workers’ compensation solutions to individual companies, groups and associations (referred to as “segregated portfolio cell dividend participants”) through the creation of segregated portfolio cells. The segregated portfolio cells are segregated pools of assets that function as insurance companies within an insurance company. The pool of assets and associated liabilities of each segregated portfolio cell are solely for the benefit of the segregated portfolio cell dividend participants, and the pool of assets of one segregated portfolio cell are statutorily protected from the creditors of the others. This permits the Company to provide customers with a turn-key alternative markets solution that includes program design, fronting, claims administration, risk management, segregated portfolio cell rental, asset management and segregated portfolio management services. The Company outsources the asset management and segregated portfolio cell management services to a third party. The segregated portfolio cell structure provides dividend participants the opportunity to share in both underwriting profit and investment income derived from their respective segregated portfolio cell’s financial results.
	The following table provides the fee revenue generated by the segregated portfolio cell reinsurance segment that is included in the Company’s workers’ compensation insurance and corporate/other segments for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Workers’ compensation insurance segment	$	1,610	$	1,231	$	5,119	$	4,095
	Corporate/other segment		33		194		300		629
	Total	$	1,643	$	1,425	$	5,419	$	4,724
	The fee revenue earned by the workers’ compensation insurance and corporate/other segments is included in acquisition and other underwriting expenses in the consolidated statements of operations and comprehensive income (loss).
	The Company is a preferred shareholder in certain of the segregated portfolio cells. For those segregated portfolio cells in which the Company participates, the Company shares in the operating and investment results of those cells and recognizes its share of the segregated portfolio dividend in the consolidated statements of operations and comprehensive income (loss).
	The Company’s share of the segregated portfolio dividend, which is included in the corporate/other segment, was as follows for the three and nine months ended September 30, 2013 and 2012, respectively (in thousands):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Segregated portfolio dividend income	$	401	$	256	$	1,158	$	778
	Corporate/Other
	The corporate/other segment primarily includes the expenses of EIHI, the third party administration activities of the Company, and the results of operations of Eastern Re, as well as certain eliminations necessary to reconcile the segment information to the consolidated statements of operations and comprehensive income (loss). The Company cancelled the remaining reinsurance contracts at Eastern Re in 1999 on a run-off basis and continues to have exposure for outstanding claims as of September 30, 2013. The corporate/other segment also included the Company’s interest in a segregated portfolio cell with an unaffiliated primary carrier that wrote insurance coverage for sprinkler contractors, known as “SprinklerPro”. The Company non-renewed the SprinklerPro contract on a run-off basis effective April 1, 2009. The Company commuted the SprinklerPro contract during the second quarter of 2012 and recognized a realized loss of $641,000, which is included in net realized investment gains (losses) for the nine months ended September 30, 2012.
	The following table represents the segment results for the three months ended September 30, 2013 (in thousands):
		Workers’		Segregated
		Compensation		Portfolio Cell		Corporate/
		Insurance		Reinsurance		Other		Total
	Revenue:
	Net premiums earned	$	35,878	$	9,251	$	—	$	45,129
	Net investment income		863		70		22		955
	Change in equity interest in limited partnerships		-48		—		38		-10
	Net realized investment (losses) gains		1,651		8		596		2,255
	Other revenue		—		—		29		29
	Total revenue		38,344		9,329		685		48,358
	Expenses:
	Losses and LAE incurred		23,356		5,592		—		28,948
	Acquisition and other underwriting expenses		2,672		2,787		-33		5,426
	Other expenses		5,740		96		2,032		7,868
	Amortization of intangibles		—		—		160		160
	Policyholder dividend expense		297		12		—		309
	Segregated portfolio dividend expense		—		842		-401		441
	Total expenses		32,065		9,329		1,758		43,152
	Income (loss) before income taxes		6,279		—		-1,073		5,206
	Income tax expense (benefit)		1,710		—		-196		1,514
	Net income (loss)	$	4,569	$	—	$	-877	$	3,692
	Total assets	$	367,333	$	77,315	$	-27,329	$	417,319
	The following table represents the segment results for the three months ended September 30, 2012 (in thousands):
		Workers’		Segregated
		Compensation		Portfolio Cell		Corporate/
		Insurance		Reinsurance		Other		Total
	Revenue:
	Net premiums earned	$	33,181	$	8,216	$	—	$	41,397
	Net investment income		749		75		68		892
	Change in equity interest in limited partnerships		258		—		32		290
	Net realized investment (losses) gains		1,022		40		-39		1,023
	Other revenue		—		—		84		84
	Total revenue		35,210		8,331		145		43,686
	Expenses:
Losses and LAE incurred		22,365		5,484		—		27,849
Acquisition and other underwriting expenses		3,198		2,482		-194		5,486
Other expenses		5,090		54		1,080		6,224
Amortization of intangibles		—		—		202		202
Policyholder dividend expense		467		26		—		493
Segregated portfolio dividend expense		—		285		-256		29
Total expenses		31,120		8,331		832		40,283
Income (loss) before income taxes		4,090		—		-687		3,403
Income tax expense (benefit)		1,003		—		-386		617
Net income (loss)	$	3,087	$	—	$	-301	$	2,786
Total assets	$	332,694	$	68,124	$	-21,875	$	378,943
The following table represents the segment results for the nine months ended September 30, 2013 (in thousands):
	Workers’		Segregated
	Compensation		Portfolio Cell		Corporate/
	Insurance		Reinsurance		Other		Total
Revenue:
Net premiums earned	$	105,955	$	27,027	$	—	$	132,982
Net investment income		2,419		226		133		2,778
Change in equity interest in limited partnerships		575		—		173		748
Net realized investment gains		2,413		148		601		3,162
Other revenue		—		—		163		163
Total revenue		111,362		27,401		1,070		139,833
Expenses:
Losses and LAE incurred		69,006		15,666		—		84,672
Acquisition and other underwriting expenses		8,357		8,090		-300		16,147
Other expenses		16,911		289		4,391		21,591
Amortization of intangibles		—		—		480		480
Policyholder dividend expense		763		44		—		807
Segregated portfolio dividend expense		—		3,312		-1,158		2,154
Total expenses		95,037		27,401		3,413		125,851
Income (loss) before income taxes		16,325		—		-2,343		13,982
Income tax expense (benefit)		4,804		—		-750		4,054
Net income (loss)	$	11,521	$	—	$	-1,593	$	9,928
Total assets	$	367,333	$	77,315	$	-27,329	$	417,319
The following table represents the segment results for the nine months ended September 30, 2012 (in thousands):
	Workers’		Segregated
	Compensation		Portfolio Cell		Corporate/
	Insurance		Reinsurance		Other		Total
Revenue:
Net premiums earned	$	92,818	$	23,800	$	—	$	116,618
Net investment income		2,385		249		272		2,906
Change in equity interest in limited partnerships		620		—		118		738
Net realized investment gains (losses)		1,618		506		-613		1,511
Other revenue		—		—		239		239
Total revenue		97,441		24,555		16		122,012
Expenses:
Losses and LAE incurred		61,480		14,855		—		76,335
Acquisition and other underwriting expenses		8,793		7,227		-629		15,391
Other expenses		14,790		218		3,111		18,119
Amortization of intangibles		—		—		605		605
Policyholder dividend expense		652		63		—		715
Segregated portfolio dividend expense		—		2,192		-778		1,414
Total expenses		85,715		24,555		2,309		112,579
Income (loss) before income taxes		11,726		—		-2,293		9,433
Income tax expense (benefit)		3,278		—		-901		2,377
Net income (loss)	$	8,448	$	—	$	-1,392	$	7,056
Total assets	$	332,694	$	68,124	$	-21,875	$	378,943

Segregated_Portfolio_Cell_Rein

Segregated Portfolio Cell Reinsurance Segment	9 Months Ended
	Sep. 30, 2013
Segregated Portfolio Cell Reinsurance Segment [Abstract]	'
Segregated Portfolio Cell Reinsurance Segment	'
	9. Segregated Portfolio Cell Reinsurance Segment
	The segregated portfolio cell reinsurance segment includes the Company’s 18 alternative market programs, which are included in the Company’s consolidated financial position and results of operations. The segregated portfolio cell reinsurance segment’s assets and liabilities as of September 30, 2013 and December 31, 2012, which are included in the Company’s consolidated balance sheets, were as follows (unaudited):
		September 30,		December 31,
		2013		2012
	ASSETS
	Investments:
	Fixed income securities, at estimated fair value (amortized cost, $32,863; $30,874)	$	32,644	$	30,931
	Equity securities, at estimated fair value (cost, $7,039; $7,043)		8,925		7,612
	Total investments		41,569		38,543
	Cash and cash equivalents		2,252		1,495
	Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses		4,218		4,716
	Deferred acquisition costs		5,396		4,160
	Other assets		5,277		4,361
	Due from affiliates, net		18,603		12,803
	Total assets	$	77,315	$	66,078
	LIABILITIES
	Reserves for unpaid losses and loss adjustment expenses	$	29,491	$	28,295
	Unearned premium reserves		20,024		14,817
	Accounts payable and accrued expenses		104		3
	Segregated portfolio cell dividend payable		20,805		17,353
	Policyholder dividends payable		164		150
	Due to affiliates, net		6,698		5,435
	Total liabilities		77,286		66,053
	SHAREHOLDERS’ EQUITY
	Preferred stock outstanding		29		25
	Total shareholders’ equity		29		25
	Total liabilities and shareholders’ equity	$	77,315	$	66,078

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies	'
	10. Commitments and Contingencies
	Legal Proceedings
	The Company is subject to legal proceedings and claims that arise in the ordinary course of its business and have not been finally adjudicated. Although there can be no assurance as to the ultimate disposition of these matters, it is the opinion of the Company’s management, based upon the information available at this time, that the expected outcome of these matters, individually or in the aggregate, will not have a material adverse effect on the Company’s results of operations or financial condition.
	Shareholder Demand Related to Merger with ProAssurance
	The Company has received letters from attorneys purporting to represent shareholders of the Company and demanding certain actions be taken as a result of the proposed acquisition of the Company by ProAssurance Corporation (“ProAssurance”). The letters claim that the proposed acquisition is the result of a flawed process and is fundamentally unfair to the Company, the shareholder and other public shareholders of the Company. The demands request that the Company’s Board of Directors 1) undertake all appropriate and available methods to maximize shareholder value and remove any conflicts of interest that have clouded the transaction process, 2) revise the proposed acquisition as structured in the merger agreement to eliminate the deal protection devices, including, but not limited to, the restrictions on the Board’s ability to seek bona-fide offers set forth in the merger agreement and reduction of the termination fee, 3) address alleged deficiencies in the Proxy statement, 4) refrain from consummating the proposed acquisition whereby the Company’s public shareholders will be cashed out of their Company stock for inadequate consideration, and 5) take appropriate legal action against each of the members of the Company’s Board of Directors.
	It is reasonably possible that others could initiate additional actions or litigation against the Company with respect to the proposed merger. The Company disagrees with the assertions made in the letters and expects to respond fully and vigorously defend any subsequent litigation.
	AIG Arbitration
	On September 6, 2011, the Company served a written demand (the “Arbitration Demand”) initiating arbitration proceedings against various AIG Companies under 24 reinsurance treaties pursuant to which the Company reinsured AIG Companies for certain pollution liability risks related to underground storage tanks for the policy years 1990 through 1999 (the “Treaties”). The Treaties were cancelled by Eastern Re in 1999. In the Arbitration Demand, the Company seeks an award from the arbitration panel compelling AIG Companies to permit the Company to examine the bases for certain paid losses and loss reserves ceded by AIG Companies to Eastern Re under the Treaties. The Company believes that the Treaties permit such an audit.
	On October 3, 2011, AIG Companies responded to the Arbitration Demand by advising that they will seek an award from the arbitration panel of approximately $1,900 plus future amounts that may become due under the Treaties before the final hearing in the arbitration. Both the Company and AIG Companies seek attorney’s fees and costs in the arbitration. Both the Company and AIG Companies have appointed arbitrators.
	During the first quarter of 2012, the Company received quarterly claims data from AIG Companies that reflected unfavorable claim development under the reinsurance treaties. The Company is unable to substantiate the reliability of the claims data reported by AIG Companies and, as a result, has not adjusted its consolidated financial statements for the amounts reported by AIG Companies. The Company continues to believe it has adequately reserved the claims at issue.
	The Company commenced an audit of the claims covered under the Treaties during the third quarter of 2012. Following the claim audit, the Company requested additional files and further information from AIG Companies in order to allow the Company to complete the audit. AIG Companies have not provided the requested information, which the Company is now pursuing in the arbitration. Once received, the information will be evaluated to determine whether such information would cause the Company to revise its estimates or position with respect to the pending arbitration.
	During the second quarter of 2013, an umpire was selected in the arbitration and an organizational meeting was held. Both parties submitted Position Statements which stated their respective positions and requested relief. In addition to seeking a full audit, the Company is seeking an order from the arbitration panel granting it all appropriate relief relating to or arising from the incorrect, improper, or untimely billings that AIG has sent to the Company. Subject to the results of the audit and discovery, the relief the Company seeks may include a refund of payments the Company has already made to AIG Companies under the treaties as well as an award in the Company’s favor for the damages it has suffered. AIG Companies is seeking approximately $4,100, which AIG Companies contends is the total the Company owes under 14 of 24 reinsurance treaties the parties entered into between 1989 and 1999. At the organizational meeting, the final hearing was set for the week of March 31, 2014. Following the meeting, the arbitration panel approved a schedule for the arbitration.
	It is reasonably possible that the final outcome of the arbitration could go against the Company, which could result in a material, adverse effect on the Company’s results of operations and financial condition.
	Eastern Alliance Insurance Co. v. Managepoint, LLC, d/b/a Management 2000 Group, Inc., a/k/a Management, Inc.
	Eastern Alliance brought this action against Managepoint, Inc., Managepoint, LLC, and Management 2000 Group, Inc. (collectively, the “Defendants”) to recover amounts due and owing under five workers’ compensation deductible insurance policies issued to the Defendants.
	On November 21, 2012, the Defendants filed a complaint, denying Eastern Alliance’s assertion that they operate as the same entity, and thus, are liable for the debts of the other, and renouncing any liability for any amounts set forth in the complaint. The Defendants also raised a number of affirmative defenses, including that Eastern Alliance breached its duty of good faith and fair dealing by, among other things, failing to obtain required approvals to settling workers’ compensation claims and improperly invoicing, collecting, and retaining various overpayments by the Defendants.
	On June 12, 2013, Eastern Alliance and the Defendants entered into a Settlement Agreement and Mutual Release (the “Settlement”) related to the above matter.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	11. Subsequent Events
	Management performed an evaluation of subsequent events through the issuance date of the consolidated financial statements and determined there were no recognized or unrecognized subsequent events that would require an adjustment and/or additional disclosure in the consolidated financial statements as of September 30, 2013.

Significant_Accounting_Policie1

Significant Accounting Policies (Policy)	9 Months Ended
	Sep. 30, 2013
Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X of the U.S. Securities and Exchange Commission. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments, being normal, recurring adjustments, necessary for a fair statement of the financial position and results of operations of the Company for the periods presented have been included. The results of operations for an interim period are not necessarily indicative of the results for an entire year. These financial statements should be read in conjunction with the Company’s audited financial statements and notes thereto as of and for the year ended December 31, 2012 included in the Company’s Annual Report on Form 10-K, which was filed with the U.S. Securities and Exchange Commission on March 8, 2013.
	All inter-company transactions and related account balances have been eliminated in consolidation.
	Certain amounts in the prior year consolidated financial statements have been reclassified to conform to the current year presentation.
	During the second quarter of 2013, management changed its accounting policy related to the classification of premium amortization and discount accretion recognized in its convertible bond portfolio. The Company previously reported amortization/accretion related to its convertible bond portfolio as a component of net investment income. The Company’s convertible bond portfolio is reported at estimated fair value with changes in fair value reported as a realized gain or loss. Due to the nature of convertible securities, certain securities may be purchased at a significant premium (commonly referred to as “conversion premium”) as a result of the underlying value of the issuer’s common stock, and the conversion premium can have a significant impact on net investment income as it is amortized. Management believes the conversion premium is reflective of the fair value of the convertible security at acquisition and should be reflected as a component of the change in fair value reported as a realized gain or loss. As a result, the Company has changed its policy for recognizing amortization/accretion related to its convertible bond portfolio and will report amortization/accretion as a component of the change in estimated fair value in net realized investment gains (losses) on the consolidated statements of operations and comprehensive income (loss). This change in accounting policy had no impact of the Company’s consolidated financial position or results of operations.  Prior period amounts have not been reclassified as the amounts were immaterial.
Use of Estimates	'
	Use of Estimates
	The preparation of the unaudited interim consolidated financial statements requires management to make estimates and assumptions that affect the amount of reported assets and liabilities and disclosures of contingent assets and liabilities as of the date of the unaudited interim consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. The most significant estimates in the unaudited interim consolidated financial statements include reserves for unpaid losses and loss adjustment expenses (“LAE”), earned but unbilled premium, deferred acquisition costs, return premiums under reinsurance contracts, and current and deferred income taxes. Actual results could differ from these estimates.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Schedule of Basic and Diluted Earnings per Share [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Net income for basic and diluted earnings per share	$	3,692	$	2,786	$	9,928	$	7,056
	Less: Dividends declared – common and unvested restricted share units		-794		-552		-2,376		-1,620
	Undistributed earnings		2,898		2,234		7,552		5,436
	Percent allocated to common shareholders		98.5%		98.1%		98.5%		98.1%
			2,855		2,192		7,439		5,333
	Add: Dividends declared – common shares		782		543		2,340		1,589
		$	3,637	$	2,735	$	9,779	$	6,922
	Denominator for basic earnings per share		7,586,843		7,480,526		7,558,707		7,539,870
	Effect of dilutive securities		54,228		146,340		38,907		139,633
	Denominator for diluted earnings per common share		7,641,071		7,626,866		7,597,614		7,679,503
	Basic earnings per share	$	0.48	$	0.37	$	1.29	$	0.92
	Diluted earnings per share	$	0.48	$	0.36	$	1.29	$	0.90
	Cash dividends per share	$	0.11	$	0.07	$	0.31	$	0.21
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Total outstanding equity awards		1,427,585		1,387,000		1,427,585		1,387,000
	Dilutive equity awards		-54,228		-146,340		-38,907		-139,633
	Equity awards excluded from earnings per share calculation		1,373,357		1,240,660		1,388,678		1,247,367

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements [Abstract]	'
Schedule of Fair Value Measurements [Table Text Block]	'
				Fair Value Measurements at Reporting
				Date Using
		9/30/13		Level 1		Level 2		Level 3
	Fixed income securities—available for sale:
	U.S. Treasuries and government agencies	$	19,996	$	12,779	$	7,217	$	—
	States, municipalities, and political subdivisions		43,926		—		43,926		—
	Corporate securities		17,655		—		17,655		—
	Residential mortgage-backed securities		23,529		—		23,529		—
	Commercial mortgage-backed securities		161		—		161		—
	Collateralized mortgage obligations		14,326		—		14,326		—
	Other structured securities		1,023		—		1,023		—
	Convertible bonds		29,616		—		29,616		—
	Equity securities—available for sale		14,178		14,178		—		—
	Total	$	164,410	$	26,957	$	137,453	$	—
				Fair Value Measurements at Reporting
				Date Using
		12/31/12		Level 1		Level 2		Level 3
	Fixed income securities—available for sale:
	U.S. Treasuries and government agencies	$	15,865	$	10,743	$	5,122	$	—
	States, municipalities, and political subdivisions		45,150		—		45,150		—
	Corporate securities		10,285		—		10,285		—
	Residential mortgage-backed securities		28,434		—		28,434		—
	Commercial mortgage-backed securities		167		—		167		—
	Collateralized mortgage obligations		17,122		—		17,122		—
	Other structured securities		1,023		—		1,023		—
	Convertible bonds		19,747		—		19,747		—
	Equity securities—available for sale		15,588		15,588		—		—
	Total	$	153,381	$	26,331	$	127,050	$	—
Schedule of Equity Securities by Investment Strategy/Industry [Table Taxt Block]	'
		2013		2012
	Large growth fund	$	3,768	$	3,156
	Foreign large blend fund		621		554
	Diversified emerging markets fund		823		911
	Large value fund		4,299		7,062
	Foreign large value fund		424		378
	Foreign large growth fund		2,135		1,881
	Natural gas industry		1,672		1,263
	Financial institutions		434		383
	Other		2		—
	Total	$	14,178	$	15,588
Schedule of Estimated Fair Values of Other Long-Term Investments [Table Text Block]	'
		2013		2012
	Multi-strategy fund of funds	$	7,578	$	6,063
	Structured finance opportunity fund		3,451		3,278
	Open-ended investment fund		693		633
	Total	$	11,722	$	9,974
Schedule of Activity Related to Limited Partnership Investments [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Balance, beginning of period	$	11,732	$	10,657	$	9,974	$	10,209
	Contributions		—		—		1,000		—
	Withdrawals		—		-1,243		—		-1,243
	Unrealized change in interest		-10		290		748		738
	Balance, end of period	$	11,722	$	9,704	$	11,722	$	9,704

Investments_Tables

Investments (Tables)	9 Months Ended
	Sep. 30, 2013
Investments [Abstract]	'
Schedule of Amortized Cost and Estimated Fair Value of Fixed Income and Equity Securities [Table Text Block]	'
		Cost or		Gross		Gross
		Amortized		Unrealized		Unrealized		Estimated
	30-Sep-13	Cost		Gains		Losses		Fair Value
	U.S. Treasuries and government agencies	$	23,575	$	253	$	-82	$	23,746
	States, municipalities, and political subdivisions		43,030		1,196		-300		43,926
	Corporate securities		46,725		138		-315		46,548
	Residential mortgage-backed securities		24,054		236		-761		23,529
	Commercial mortgage-backed securities		149		12		—		161
	Collateralized mortgage obligations		14,485		88		-247		14,326
	Other structured securities		1,018		13		-8		1,023
	Total fixed income securities		153,036		1,936		-1,713		153,259
	Equity securities		17,684		5,558		-139		23,103
	Total fixed income and equity securities	$	170,720	$	7,494	$	-1,852	$	176,362
		Cost or		Gross		Gross
		Amortized		Unrealized		Unrealized		Estimated
	31-Dec-12	Cost		Gains		Losses		Fair Value
	U.S. Treasuries and government agencies	$	19,780	$	364	$	-5	$	20,139
	States, municipalities, and political subdivisions		42,942		2,239		-31		45,150
	Corporate securities		36,624		321		-4		36,941
	Residential mortgage-backed securities		27,983		481		-30		28,434
	Commercial mortgage-backed securities		148		19		—		167
	Collateralized mortgage obligations		17,009		172		-59		17,122
	Other structured securities		1,000		23		—		1,023
	Total fixed income securities		145,486		3,619		-129		148,976
	Equity securities		20,462		2,877		-139		23,200
	Total fixed income and equity securities	$	165,948	$	6,496	$	-268	$	172,176
Schedule of Maturities [Table Text Block]	'
		Amortized		Estimated
		Cost		Fair Value
	Less than one year	$	12,863	$	13,524
	One through five years		46,436		48,244
	Five through ten years		22,535		23,201
	Greater than ten years		17,393		18,473
	Mortgage/asset-backed securities		39,727		39,039
	Total	$	138,954	$	142,481
Schedule of Gross Unrealized Losses and Estimated Fair Value of Fixed Income and Equity Securities [Table Text Block]	'
		Less Than 12 Months					12 Months or More					Total
		Estimated		Gross			Estimated		Gross			Estimated		Gross
		Fair		Unrealized		# of	Fair		Unrealized		# of	Fair		Unrealized		# of
	30-Sep-13	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
	U.S. Treasuries and government agencies	$	2,952	$	-82	9	$	—	$	—	—	$	2,952	$	-82	9
	States, municipalities, and political subdivisions		13,249		-300	62		—		—	—		13,249		-300	62
	Corporate securities		11,451		-95	11		—		—	—		11,451		-95	11
	Residential mortgage-backed securities		16,064		-761	20		—		—	—		16,064		-761	20
	Collateralized mortgage obligations		9,173		-233	17		799		-14	4		9,972		-247	21
	Other structured securities		10		-8	1		—		—	—		10		-8	1
	Total fixed income securities		52,899		-1,479	120		799		-14	4		53,698		-1,493	124
	Equity securities		1,142		-139	6		—		—	—		1,142		-139	6
	Total fixed income and equity securities	$	54,041	$	-1,618	126	$	799	$	-14	4	$	54,840	$	-1,632	130
		Less Than 12 Months					12 Months or More					Total
		Estimated		Gross			Estimated		Gross			Estimated		Gross
		Fair		Unrealized		# of	Fair		Unrealized		# of	Fair		Unrealized		# of
	31-Dec-12	Value		Losses		Securities	Value		Losses		Securities	Value		Losses		Securities
	U.S. Treasuries and government agencies	$	594	$	-5	1	$	—	$	—	—	$	594	$	-5	1
	States, municipalities, and political subdivisions		3,922		-31	17		—		—	—		3,922		-31	17
	Residential mortgage-backed securities		11,922		-30	10		—		—	—		11,922		-30	10
	Collateralized mortgage obligations		4,943		-56	9		122		-3	2		5,065		-59	11
	Total fixed income securities		21,381		-122	37		122		-3	2		21,503		-125	39
	Equity securities		1,034		-135	11		—		—	—		1,034		-135	11
	Total fixed income and equity securities	$	22,415	$	-257	48	$	122	$	-3	2	$	22,537	$	-260	50
Schedule of Realized Gain (Loss) [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Gross realized investment gains:
	Fixed income securities	$	3	$	2	$	10	$	190
	Convertible bonds		256		492		1,102		921
	Equity securities		1,253		38		1,576		498
	Other		—		5		—		5
	Gross realized investment gains		1,512		537		2,688		1,614
	Gross realized investment losses:
	Fixed income securities		-41		—		-42		—
	Convertible bonds		-8		-63		-35		-86
	Equity securities		—		—		-10		-52
	Other		—		—		—		-641
	Gross realized investment losses		-49		-63		-87		-779
	Other-than-temporary investment impairments		—		-40		—		-127
	Change in fair value of convertible bonds		792		589		561		803
	Net realized investment gains	$	2,255	$	1,023	$	3,162	$	1,511
Schedule of Net Investment Income [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Fixed income and convertible bond securities	$	1,048	$	964	$	3,023	$	3,025
	Equity securities		116		90		251		260
	Cash and cash equivalents		2		3		8		22
	Other		—		28		62		126
	Gross investment income		1,166		1,085		3,344		3,433
	Investment expenses		-211		-193		-566		-527
	Net investment income	$	955	$	892	$	2,778	$	2,906

Reserves_for_Unpaid_Losses_and1

Reserves for Unpaid Losses and Loss Adjustment Expenses (Tables)	9 Months Ended
	Sep. 30, 2013
Reserves for Unpaid Losses and Loss Adjustment Expenses [Abstract]	'
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Balance, beginning of period	$	123,365	$	111,521	$	117,728	$	106,077
	Reinsurance recoverables on unpaid losses and LAE		14,073		14,539		15,084		11,805
	Net balance, beginning of period		109,292		96,982		102,644		94,272
	Incurred related to:
	Current year		28,990		28,549		84,268		76,877
	Prior year		-42		-700		404		-542
	Total incurred		28,948		27,849		84,672		76,335
	Paid related to:
	Current year		15,183		13,181		28,157		25,246
	Prior year		11,257		10,952		47,359		44,663
	Total paid		26,440		24,133		75,516		69,909
	Net balance, end of period		111,800		100,698		111,800		100,698
	Reinsurance recoverables on unpaid losses and LAE		14,666		14,987		14,666		14,987
	Balance, end of period	$	126,466	$	115,685	$	126,466	$	115,685
Schedule of Incurred Losses by Segment [Table Text Block]	'
	Three Months Ended September 30, 2013
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	23,406	$	5,789	$	29,195
	Current period discount		-50		-155		-205
	Prior year, gross of discount		—		-188		-188
	Accretion of prior period discount		—		146		146
	Total incurred	$	23,356	$	5,592	$	28,948
	Three Months Ended September 30, 2012
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	22,544	$	6,327	$	28,871
	Current period discount		-179		-143		-322
	Prior year, gross of discount		—		-781		-781
	Accretion of prior period discount		—		81		81
	Total incurred	$	22,365	$	5,484	$	27,849
	Nine Months Ended September 30, 2013
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	69,387	$	17,376	$	86,763
	Current period discount		-1,927		-568		-2,495
	Prior year, gross of discount		—		-1,726		-1,726
	Accretion of prior period discount		1,546		584		2,130
	Total incurred	$	69,006	$	15,666	$	84,672
	Nine Months Ended September 30, 2012
		Workers’		Segregated
		Compensation		Portfolio Cell
		Insurance		Reinsurance
		Segment		Segment		Total
	Incurred related to:
	Current year, gross of discount	$	61,979	$	17,384	$	79,363
	Current period discount		-1,929		-557		-2,486
	Prior year, gross of discount		—		-2,361		-2,361
	Accretion of prior period discount		1,430		389		1,819
	Total incurred	$	61,480	$	14,855	$	76,335

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Information [Abstract]	'
Schedule of Net Premiums Earned in Workers' Compensation Insurance Segment [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Guaranteed cost policies	$	27,601	$	24,629	$	81,310	$	69,813
	Dividend policies		4,711		5,144		13,982		13,893
	Deductible policies		1,905		1,523		5,750		4,717
	Retrospectively-rated policies		1,661		1,885		4,913		4,395
	Total	$	35,878	$	33,181	$	105,955	$	92,818
Schedule of Fee Revenue Generated, by Segment [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Workers’ compensation insurance segment	$	1,610	$	1,231	$	5,119	$	4,095
	Corporate/other segment		33		194		300		629
	Total	$	1,643	$	1,425	$	5,419	$	4,724
Share of the Segregated Portfolio Dividend [Table Text Block]	'
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Segregated portfolio dividend income	$	401	$	256	$	1,158	$	778
Schedule of Segment Results [Table Text Block]	'
	The following table represents the segment results for the three months ended September 30, 2013 (in thousands):
		Workers’		Segregated
		Compensation		Portfolio Cell		Corporate/
		Insurance		Reinsurance		Other		Total
	Revenue:
	Net premiums earned	$	35,878	$	9,251	$	—	$	45,129
	Net investment income		863		70		22		955
	Change in equity interest in limited partnerships		-48		—		38		-10
	Net realized investment (losses) gains		1,651		8		596		2,255
	Other revenue		—		—		29		29
	Total revenue		38,344		9,329		685		48,358
	Expenses:
	Losses and LAE incurred		23,356		5,592		—		28,948
	Acquisition and other underwriting expenses		2,672		2,787		-33		5,426
	Other expenses		5,740		96		2,032		7,868
	Amortization of intangibles		—		—		160		160
	Policyholder dividend expense		297		12		—		309
	Segregated portfolio dividend expense		—		842		-401		441
	Total expenses		32,065		9,329		1,758		43,152
	Income (loss) before income taxes		6,279		—		-1,073		5,206
	Income tax expense (benefit)		1,710		—		-196		1,514
	Net income (loss)	$	4,569	$	—	$	-877	$	3,692
	Total assets	$	367,333	$	77,315	$	-27,329	$	417,319
	The following table represents the segment results for the three months ended September 30, 2012 (in thousands):
		Workers’		Segregated
		Compensation		Portfolio Cell		Corporate/
		Insurance		Reinsurance		Other		Total
	Revenue:
	Net premiums earned	$	33,181	$	8,216	$	—	$	41,397
	Net investment income		749		75		68		892
	Change in equity interest in limited partnerships		258		—		32		290
	Net realized investment (losses) gains		1,022		40		-39		1,023
	Other revenue		—		—		84		84
	Total revenue		35,210		8,331		145		43,686
	Expenses:
	Losses and LAE incurred		22,365		5,484		—		27,849
	Acquisition and other underwriting expenses		3,198		2,482		-194		5,486
	Other expenses		5,090		54		1,080		6,224
	Amortization of intangibles		—		—		202		202
	Policyholder dividend expense		467		26		—		493
	Segregated portfolio dividend expense		—		285		-256		29
	Total expenses		31,120		8,331		832		40,283
	Income (loss) before income taxes		4,090		—		-687		3,403
	Income tax expense (benefit)		1,003		—		-386		617
	Net income (loss)	$	3,087	$	—	$	-301	$	2,786
	Total assets	$	332,694	$	68,124	$	-21,875	$	378,943
	The following table represents the segment results for the nine months ended September 30, 2013 (in thousands):
		Workers’		Segregated
		Compensation		Portfolio Cell		Corporate/
		Insurance		Reinsurance		Other		Total
	Revenue:
	Net premiums earned	$	105,955	$	27,027	$	—	$	132,982
	Net investment income		2,419		226		133		2,778
	Change in equity interest in limited partnerships		575		—		173		748
	Net realized investment gains		2,413		148		601		3,162
	Other revenue		—		—		163		163
	Total revenue		111,362		27,401		1,070		139,833
	Expenses:
	Losses and LAE incurred		69,006		15,666		—		84,672
	Acquisition and other underwriting expenses		8,357		8,090		-300		16,147
	Other expenses		16,911		289		4,391		21,591
	Amortization of intangibles		—		—		480		480
	Policyholder dividend expense		763		44		—		807
Segregated portfolio dividend expense		—		3,312		-1,158		2,154
Total expenses		95,037		27,401		3,413		125,851
Income (loss) before income taxes		16,325		—		-2,343		13,982
Income tax expense (benefit)		4,804		—		-750		4,054
Net income (loss)	$	11,521	$	—	$	-1,593	$	9,928
Total assets	$	367,333	$	77,315	$	-27,329	$	417,319
The following table represents the segment results for the nine months ended September 30, 2012 (in thousands):
	Workers’		Segregated
	Compensation		Portfolio Cell		Corporate/
	Insurance		Reinsurance		Other		Total
Revenue:
Net premiums earned	$	92,818	$	23,800	$	—	$	116,618
Net investment income		2,385		249		272		2,906
Change in equity interest in limited partnerships		620		—		118		738
Net realized investment gains (losses)		1,618		506		-613		1,511
Other revenue		—		—		239		239
Total revenue		97,441		24,555		16		122,012
Expenses:
Losses and LAE incurred		61,480		14,855		—		76,335
Acquisition and other underwriting expenses		8,793		7,227		-629		15,391
Other expenses		14,790		218		3,111		18,119
Amortization of intangibles		—		—		605		605
Policyholder dividend expense		652		63		—		715
Segregated portfolio dividend expense		—		2,192		-778		1,414
Total expenses		85,715		24,555		2,309		112,579
Income (loss) before income taxes		11,726		—		-2,293		9,433
Income tax expense (benefit)		3,278		—		-901		2,377
Net income (loss)	$	8,448	$	—	$	-1,392	$	7,056
Total assets	$	332,694	$	68,124	$	-21,875	$	378,943

Segregated_Portfolio_Cell_Rein1

Segregated Portfolio Cell Reinsurance Segment (Tables)	9 Months Ended
	Sep. 30, 2013
Segregated Portfolio Cell Reinsurance Segment [Abstract]	'
Schedule of Segregated Portfolio Cell Reinsurance Segment's Assets and Liabilities [Table Text Block]	'
		September 30,		December 31,
		2013		2012
	ASSETS
	Investments:
	Fixed income securities, at estimated fair value (amortized cost, $32,863; $30,874)	$	32,644	$	30,931
	Equity securities, at estimated fair value (cost, $7,039; $7,043)		8,925		7,612
	Total investments		41,569		38,543
	Cash and cash equivalents		2,252		1,495
	Reinsurance recoverable on paid and unpaid losses and loss adjustment expenses		4,218		4,716
	Deferred acquisition costs		5,396		4,160
	Other assets		5,277		4,361
	Due from affiliates, net		18,603		12,803
	Total assets	$	77,315	$	66,078
	LIABILITIES
	Reserves for unpaid losses and loss adjustment expenses	$	29,491	$	28,295
	Unearned premium reserves		20,024		14,817
	Accounts payable and accrued expenses		104		3
	Segregated portfolio cell dividend payable		20,805		17,353
	Policyholder dividends payable		164		150
	Due to affiliates, net		6,698		5,435
	Total liabilities		77,286		66,053
	SHAREHOLDERS’ EQUITY
	Preferred stock outstanding		29		25
	Total shareholders’ equity		29		25
	Total liabilities and shareholders’ equity	$	77,315	$	66,078

Agreement_and_Plan_of_Merger_w1

Agreement and Plan of Merger with ProAssurance Corporation (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Agreement and Plan of Merger with ProAssurance Corporation [Abstract]	'
Business Acquisition, Date of Acquisition Agreement	23-Sep-13
Business Acquisition, Effective Date of Acquisition	1-Jan-14
Cash consideration	$24.50

Earnings_Per_share_Schedule_of

Earnings Per share (Schedule of Basic and Diluted Earnings Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Net income for basic and diluted earnings per share	$3,692	$2,786	$9,928	$7,056
Less: Dividends declared – common and unvested restricted share units	-794	-552	-2,376	-1,620
Undistributed earnings	2,898	2,234	7,552	5,436
Percent allocated to common shareholders	98.50%	98.10%	98.50%	98.10%
Undistributed earnings allocated to common shareholders	2,855	2,192	7,439	5,333
Add: Dividends declared – common shares	782	543	2,340	1,589
Net income (loss) available to common stockholders	$3,637	$2,735	$9,779	$6,922
Denominator for basic earnings per share	7,586,843	7,480,526	7,558,707	7,539,870
Effect of dilutive securities	54,228	146,340	38,907	139,633
Denominator for diluted earnings per common share	7,641,071	7,626,866	7,597,614	7,679,503
Basic earnings per share	$0.48	$0.37	$1.29	$0.92
Diluted earnings per share	$0.48	$0.36	$1.29	$0.90
Cash dividends per share	$0.11	$0.07	$0.31	$0.21

Recovered_Sheet1

Earnings Per Share (Schedule of Anti-Dilutive Securities Excluded from Computation of Earnings Per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Total outstanding equity awards	1,427,585	1,387,000	1,427,585	1,387,000
Dilutive equity awards	-54,228	-146,340	-38,907	-139,633
Equity awards excluded from earnings per share calculation	1,373,357	1,240,660	1,388,678	1,247,367

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule of Fair Value Measurements) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	$176,362	$172,176
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0	'
Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	164,410	153,381
Fair Value, Inputs, Level 1 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	26,957	26,331
Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	137,453	127,050
U.S. Treasuries and government agencies [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	23,746	20,139
U.S. Treasuries and government agencies [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	19,996	15,865
U.S. Treasuries and government agencies [Member] | Fair Value, Inputs, Level 1 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	12,779	10,743
U.S. Treasuries and government agencies [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	7,217	5,122
States, municipalities, and political subdivisions [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	43,926	45,150
States, municipalities, and political subdivisions [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	43,926	45,150
States, municipalities, and political subdivisions [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	43,926	45,150
Corporate securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	46,548	36,941
Corporate securities [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	17,655	10,285
Corporate securities [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	17,655	10,285
Residential mortgage-backed securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	23,529	28,434
Residential mortgage-backed securities [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	23,529	28,434
Residential mortgage-backed securities [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	23,529	28,434
Commercial mortgage-backed securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	161	167
Commercial mortgage-backed securities [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	161	167
Commercial mortgage-backed securities [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	161	167
Collateralized mortgage obligations [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	14,326	17,122
Collateralized mortgage obligations [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	14,326	17,122
Collateralized mortgage obligations [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	14,326	17,122
Other structured securities [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	1,023	1,023
Other structured securities [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	1,023	1,023
Other structured securities [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	1,023	1,023
Convertible Bonds [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	29,616	19,747
Convertible Bonds [Member] | Fair Value, Inputs, Level 2 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	29,616	19,747
Equity securities - available for sale [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	23,103	23,200
Equity securities - available for sale [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	14,178	15,588
Equity securities - available for sale [Member] | Fair Value, Inputs, Level 1 [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Available for sale securities	$14,178	$15,588

Fair_Value_Measurements_Schedu1

Fair Value Measurements (Schedule of Equity Securities by Investment Strategy/Industry) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Available for sale securities	$176,362	$172,176
Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	164,410	153,381
Large growth fund [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	3,768	3,156
Foreign large blend fund [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	621	554
Diversified emerging markets fund [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	823	911
Large value fund [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	4,299	7,062
Foreign large value fund [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	424	378
Foreign large growth fund [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	2,135	1,881
Natural gas industry [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	1,672	1,263
Financial institutions [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	434	383
Other equity securities [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	2	'
Equity securities - available for sale [Member]	'	'
Available for sale securities	23,103	23,200
Equity securities - available for sale [Member] | Workers' Compensation Insurance and Corporate/Other [Member]	'	'
Available for sale securities	$14,178	$15,588

Fair_Value_Measurements_Schedu2

Fair Value Measurements (Schedule of Estimated Fair Values of Other Long-Term Investments) (Details) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'	'	'	'	'
Estimated fair value of limited partnership investment	$11,722	$11,732	$9,974	$9,704	$10,657	$10,209
Multi-strategy fund of funds [Member]	'	'	'	'	'	'
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'	'	'	'	'
Estimated fair value of limited partnership investment	7,578	'	6,063	'	'	'
Structured finance opportunity fund [Member]	'	'	'	'	'	'
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'	'	'	'	'
Estimated fair value of limited partnership investment	3,451	'	3,278	'	'	'
Open-ended investment fund [Member]	'	'	'	'	'	'
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]	'	'	'	'	'	'
Estimated fair value of limited partnership investment	$693	'	$633	'	'	'

Fair_Value_Measurements_Schedu3

Fair Value Measurements (Schedule of Activity Related to Limited Partnership Investments) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Fair Value Measurements [Abstract]	'	'	'	'
Balance, beginning of period	$11,732	$10,657	$9,974	$10,209
Contributions	'	'	1,000	'
Withdrawals	0	-1,243	'	-1,243
Unrealized change in interest	-10	290	748	738
Balance, end of period	$11,722	$9,704	$11,722	$9,704

Investments_Schedule_of_Amorti

Investments (Schedule of Amortized Cost and Estimated Fair Value of Fixed Income and Equity Securities) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	$170,720	$165,948
Gross Unrealized Gains	7,494	6,496
Gross Unrealized Losses	-1,852	-268
Estimated Fair Value	176,362	172,176
U.S. Treasuries and government agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	23,575	19,780
Gross Unrealized Gains	253	364
Gross Unrealized Losses	-82	-5
Estimated Fair Value	23,746	20,139
States, municipalities, and political subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	43,030	42,942
Gross Unrealized Gains	1,196	2,239
Gross Unrealized Losses	-300	-31
Estimated Fair Value	43,926	45,150
Corporate securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	46,725	36,624
Gross Unrealized Gains	138	321
Gross Unrealized Losses	-315	-4
Estimated Fair Value	46,548	36,941
Residential mortgage-backed securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	24,054	27,983
Gross Unrealized Gains	236	481
Gross Unrealized Losses	-761	-30
Estimated Fair Value	23,529	28,434
Commercial mortgage-backed securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	149	148
Gross Unrealized Gains	12	19
Estimated Fair Value	161	167
Collateralized mortgage obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	14,485	17,009
Gross Unrealized Gains	88	172
Gross Unrealized Losses	-247	-59
Estimated Fair Value	14,326	17,122
Other structured securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	1,018	1,000
Gross Unrealized Gains	13	23
Gross Unrealized Losses	-8	'
Estimated Fair Value	1,023	1,023
Fixed income securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	153,036	145,486
Gross Unrealized Gains	1,936	3,619
Gross Unrealized Losses	-1,713	-129
Estimated Fair Value	153,259	148,976
Equity securities - available for sale [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Cost or amortized cost	17,684	20,462
Gross Unrealized Gains	5,558	2,877
Gross Unrealized Losses	-139	-139
Estimated Fair Value	$23,103	$23,200

Investments_Schedule_of_Maturi

Investments (Schedule of Maturities) (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Investments [Abstract]	'
Amortized cost of fixed income securities and convertible bonds with less than one year to maturity	$12,863
Amortized cost of fixed income securities and convertible bonds with one through five years to maturity	46,436
Amortized cost of fixed income securities and convertible bonds with five through ten years to maturity	22,535
Amortized cost of fixed income securities and convertible bonds with greater than ten years to maturity	17,393
Amortized cost of mortgage/asset-backed securities	39,727
Total amortized cost of fixed income securities and convertible bonds	138,954
Estimated fair value of fixed income securities and convertible bonds with less than one year to maturity	13,524
Estimated fair value of fixed income securities and convertible bonds with one through five years to maturity	48,244
Estimated fair value of fixed income securities and convertible bonds with five through ten years to maturity	23,201
Estimated fair value of fixed income securities and convertible bonds with greater than ten years to maturity	18,473
Estimated fair value of mortgage/asset-backed securities	39,039
Total estimated fair value of fixed income securities and convertible bonds	$142,481

Investments_Schedule_of_Gross_

Investments (Schedule of Gross Unrealized Losses and Estimated Fair Value of Fixed Income and Equity Securities) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
	security	security
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	$54,041	$22,415
Less Than 12 Months Gross Unrealized Losses	-1,618	-257
12 Months or More Estimated Fair Value	799	122
12 Months or More Gross Unrealized Losses	-14	-3
Total Estimated Fair Value	54,840	22,537
Total Gross Unrealized Losses	-1,632	-260
# of Securities	130	50
U.S. Treasuries and government agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	2,952	594
Less Than 12 Months Gross Unrealized Losses	-82	-5
Total Estimated Fair Value	2,952	594
Total Gross Unrealized Losses	-82	-5
# of Securities	9	1
States, municipalities, and political subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	13,249	3,922
Less Than 12 Months Gross Unrealized Losses	-300	-31
Total Estimated Fair Value	13,249	3,922
Total Gross Unrealized Losses	-300	-31
# of Securities	62	17
Corporate securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	11,451	'
Less Than 12 Months Gross Unrealized Losses	-95	'
Total Estimated Fair Value	11,451	'
Total Gross Unrealized Losses	-95	'
# of Securities	11	'
Residential mortgage-backed securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	16,064	11,922
Less Than 12 Months Gross Unrealized Losses	-761	-30
Total Estimated Fair Value	16,064	11,922
Total Gross Unrealized Losses	-761	-30
# of Securities	20	10
Collateralized mortgage obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	9,173	4,943
Less Than 12 Months Gross Unrealized Losses	-233	-56
12 Months or More Estimated Fair Value	799	122
12 Months or More Gross Unrealized Losses	-14	-3
Total Estimated Fair Value	9,972	5,065
Total Gross Unrealized Losses	-247	-59
# of Securities	21	11
Other structured securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	10	'
Less Than 12 Months Gross Unrealized Losses	-8	'
Total Estimated Fair Value	10	'
Total Gross Unrealized Losses	-8	'
# of Securities	1	'
Fixed income securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	52,899	21,381
Less Than 12 Months Gross Unrealized Losses	-1,479	-122
12 Months or More Estimated Fair Value	799	122
12 Months or More Gross Unrealized Losses	-14	-3
Total Estimated Fair Value	53,698	21,503
Total Gross Unrealized Losses	-1,493	-125
# of Securities	124	39
Equity securities - available for sale [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months Estimated Fair Value	1,142	1,034
Less Than 12 Months Gross Unrealized Losses	-139	-135
Total Estimated Fair Value	1,142	1,034
Total Gross Unrealized Losses	($139)	($135)
# of Securities	6	11
Less than 12 Months [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	126	48
Less than 12 Months [Member] | U.S. Treasuries and government agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	9	1
Less than 12 Months [Member] | States, municipalities, and political subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	62	17
Less than 12 Months [Member] | Corporate securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	11	'
Less than 12 Months [Member] | Residential mortgage-backed securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	20	10
Less than 12 Months [Member] | Collateralized mortgage obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	17	9
Less than 12 Months [Member] | Other structured securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	1	'
Less than 12 Months [Member] | Fixed income securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	120	37
Less than 12 Months [Member] | Equity securities - available for sale [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	6	11
12 Months or More [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	4	2
12 Months or More [Member] | Collateralized mortgage obligations [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	4	2
12 Months or More [Member] | Fixed income securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
# of Securities	4	2

Investments_Schedule_of_Realiz

Investments (Schedule of Realized Gain (Loss)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Gross realized gains	$1,512	$537	$2,688	$1,614
Gross realized losses	-49	-63	-87	-779
Other-than-temporary investment impairments	'	-40	'	-127
Change in fair value of convertible bonds	792	589	561	803
Net realized investment gains (losses)	2,255	1,023	3,162	1,511
Fixed income securities [Member]	'	'	'	'
Gross realized gains	3	2	10	190
Gross realized losses	-41	'	-42	'
Other-than-temporary investment impairments	'	'	0	'
Convertible Bonds [Member]	'	'	'	'
Gross realized gains, convertible bonds	256	492	1,102	921
Gross realized loss, convertible bonds	8	63	35	86
Equity securities - available for sale [Member]	'	'	'	'
Gross realized gains	1,253	38	1,576	498
Gross realized losses	'	'	-10	-52
Other-than-temporary investment impairments	'	'	0	'
Other [Member]	'	'	'	'
Gross realized gains, other	'	5	'	5
Gross realized loss, other	'	'	'	$641

Investments_Schedule_of_Net_In

Investments (Schedule of Net Investment Income) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Investment Income	$1,166	$1,085	$3,344	$3,433
Investment Expense	-211	-193	-566	-527
Net Investment Income	955	892	2,778	2,906
Fixed income and convertible bond securities [Member]	'	'	'	'
Investment Income	1,048	964	3,023	3,025
Equity securities - available for sale [Member]	'	'	'	'
Investment Income	116	90	251	260
Cash and Cash Equivalents [Member]	'	'	'	'
Investment Income	2	3	8	22
Other Investments [Member]	'	'	'	'
Investment Income	'	$28	$62	$126

Investments_Narrative_Disclosu

Investments (Narrative Disclosures) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'
Estimated Fair Value	$176,362	'	$176,362	'	$172,176
Other-than-temporary impairment of equity security	'	40	'	127	'
Fixed income securities, at estimated fair value (amortized cost, $32,863; $30,874)	153,259	'	153,259	'	148,976
Net realized investment gains (losses)	792	589	561	803	'
Change in equity interest in limited partnerships	-10	290	748	738	'
Fixed income mutual fund [Member]	'	'	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'
Fixed income mutual fund cost	38,767	'	38,767	'	26,600
Estimated Fair Value	38,491	'	38,491	'	26,656
Fixed income securities [Member]	'	'	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'
Estimated Fair Value	153,259	'	153,259	'	148,976
Other-than-temporary impairment of equity security	'	'	0	'	'
Equity securities - available for sale [Member]	'	'	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'
Estimated Fair Value	23,103	'	23,103	'	23,200
Other-than-temporary impairment of equity security	'	'	$0	'	'
Maximum [Member]	'	'	'	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'
Fixed income security, original maturity	'	'	'5 years	'	'

Reserves_for_Unpaid_Losses_and2

Reserves for Unpaid Losses and LAE (Schedule of Liability for Unpaid Claims and Claims Adjustment Expense) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reserves for Unpaid Losses and Loss Adjustment Expenses [Abstract]	'	'	'	'
Balance, beginning of period	$123,365	$111,521	$117,728	$106,077
Reinsurance recoverables on unpaid losses and LAE, beginning balance	14,073	14,539	15,084	11,805
Net balance, beginning of period	109,292	96,982	102,644	94,272
Incurred related to current year	28,990	28,549	84,268	76,877
Incurred related to prior year	-42	-700	404	-542
Losses and loss adjustment expenses incurred	28,948	27,849	84,672	76,335
Paid related to current year	15,183	13,181	28,157	25,246
Paid related to prior year	11,257	10,952	47,359	44,663
Total paid	26,440	24,133	75,516	69,909
Net balance, end of period	111,800	100,698	111,800	100,698
Reinsurance recoverables on unpaid losses and LAE, ending balance	14,666	14,987	14,666	14,987
Balance, end of period	$126,466	$115,685	$126,466	$115,685

Reserves_for_Unpaid_Losses_and3

Reserves for Unpaid Losses and LAE (Schedule of Incurred Losses by Segment) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Current year, gross of discount	$29,195	$28,871	$86,763	$79,363
Current period discount	205	322	2,495	2,486
Prior year, gross of discount	-188	-781	-1,726	-2,361
Accretion of prior period discount	146	81	2,130	1,819
Total incurred	28,948	27,849	84,672	76,335
Workers' Compensation Insurance [Member]	'	'	'	'
Current year, gross of discount	23,406	22,544	69,387	61,979
Current period discount	50	179	1,927	1,929
Accretion of prior period discount	'	'	1,546	1,430
Total incurred	23,356	22,365	69,006	61,480
Segregated Portfolio Cell Reinsurance Segment [Member]	'	'	'	'
Current year, gross of discount	5,789	6,327	17,376	17,384
Current period discount	155	143	568	557
Prior year, gross of discount	-188	-781	-1,726	-2,361
Accretion of prior period discount	146	81	584	389
Total incurred	$5,592	$5,484	$15,666	$14,855

Reserves_for_Unpaid_Losses_and4

Reserves for Unpaid Losses and LAE (Narrative) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Workers' Compensation Insurance [Member]	'	'	'	'
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense, Amount	$0	'	$0	'
Segregated Portfolio Cell Reinsurance Segment [Member]	'	'	'	'
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense, Amount	$188	$781	$1,726	$2,361

Segment_Information_Schedule_o

Segment Information (Schedule of Net Premiums Earned in Workers' Compensation Insurance Segment) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Premiums Earned, Net	$45,129	$41,397	$132,982	$116,618
Workers' Compensation Insurance [Member]	'	'	'	'
Premiums Earned, Net	35,878	33,181	105,955	92,818
Workers' Compensation Insurance [Member] | Guaranteed cost policies [Member]	'	'	'	'
Premiums Earned, Net	27,601	24,629	81,310	69,813
Workers' Compensation Insurance [Member] | Policyholder dividend policies [Member]	'	'	'	'
Premiums Earned, Net	4,711	5,144	13,982	13,893
Workers' Compensation Insurance [Member] | Deductible Policies [Member]	'	'	'	'
Premiums Earned, Net	1,905	1,523	5,750	4,717
Workers' Compensation Insurance [Member] | Retrospectively-rated policies [Member]	'	'	'	'
Premiums Earned, Net	$1,661	$1,885	$4,913	$4,395

Segment_Information_Schedule_o1

Segment Information (Schedule of Fee Revenue Generated, by Segment) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Fee revenue generated by the segregated portfolio cell reinsurance segment	$1,643	$1,425	$5,419	$4,724
Workers' Compensation Insurance [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Fee revenue generated by the segregated portfolio cell reinsurance segment	1,610	1,231	5,119	4,095
Corporate/Other [Member]	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Fee revenue generated by the segregated portfolio cell reinsurance segment	$33	$194	$300	$629

Segment_Information_Share_of_t

Segment Information (Share of the Segregated Portfolio Dividend) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Information [Abstract]	'	'	'	'
Segregated portfolio dividend income	$401	$256	$1,158	$778

Segment_Information_Schedule_o2

Segment Information (Schedule of Segment Results) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'
Net premiums earned	$45,129	$41,397	$132,982	$116,618	'
Net investment income	955	892	2,778	2,906	'
Change in equity interest in limited partnerships	-10	290	748	738	'
Net realized investment gains (losses)	2,255	1,023	3,162	1,511	'
Other revenue	29	84	163	239	'
Total revenue	48,358	43,686	139,833	122,012	'
Losses and loss adjustment expenses incurred	28,948	27,849	84,672	76,335	'
Acquisition and other underwriting expenses	5,426	5,486	16,147	15,391	'
Other expenses	7,868	6,224	21,591	18,119	'
Amortization of intangibles	160	202	480	605	'
Policyholder dividend expense	309	493	807	715	'
Segregated portfolio dividend expense	441	29	2,154	1,414	'
Total expenses	43,152	40,283	125,851	112,579	'
Income before income taxes	5,206	3,403	13,982	9,433	'
Income tax expense	1,514	617	4,054	2,377	'
Net income (loss)	3,692	2,786	9,928	7,056	'
Total assets	417,319	378,943	417,319	378,943	380,752
Workers' Compensation Insurance [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net premiums earned	35,878	33,181	105,955	92,818	'
Net investment income	863	749	2,419	2,385	'
Change in equity interest in limited partnerships	-48	258	575	620	'
Net realized investment gains (losses)	1,651	1,022	2,413	1,618	'
Total revenue	38,344	35,210	111,362	97,441	'
Losses and loss adjustment expenses incurred	23,356	22,365	69,006	61,480	'
Acquisition and other underwriting expenses	2,672	3,198	8,357	8,793	'
Other expenses	5,740	5,090	16,911	14,790	'
Policyholder dividend expense	297	467	763	652	'
Total expenses	32,065	31,120	95,037	85,715	'
Income before income taxes	6,279	4,090	16,325	11,726	'
Income tax expense	1,710	1,003	4,804	3,278	'
Net income (loss)	4,569	3,087	11,521	8,448	'
Total assets	367,333	332,694	367,333	332,694	'
Segregated Portfolio Cell Reinsurance Segment [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net premiums earned	9,251	8,216	27,027	23,800	'
Net investment income	70	75	226	249	'
Net realized investment gains (losses)	8	40	148	506	'
Total revenue	9,329	8,331	27,401	24,555	'
Losses and loss adjustment expenses incurred	5,592	5,484	15,666	14,855	'
Acquisition and other underwriting expenses	2,787	2,482	8,090	7,227	'
Other expenses	96	54	289	218	'
Policyholder dividend expense	12	26	44	63	'
Segregated portfolio dividend expense	842	285	3,312	2,192	'
Total expenses	9,329	8,331	27,401	24,555	'
Total assets	77,315	68,124	77,315	68,124	66,078
Corporate/Other [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Net investment income	22	68	133	272	'
Change in equity interest in limited partnerships	38	32	173	118	'
Net realized investment gains (losses)	596	-39	601	-613	'
Other revenue	29	84	163	239	'
Total revenue	685	145	1,070	16	'
Acquisition and other underwriting expenses	-33	-194	-300	-629	'
Other expenses	2,032	1,080	4,391	3,111	'
Amortization of intangibles	160	202	480	605	'
Segregated portfolio dividend expense	-401	-256	-1,158	-778	'
Total expenses	1,758	832	3,413	2,309	'
Income before income taxes	-1,073	-687	-2,343	-2,293	'
Income tax expense	-196	-386	-750	-901	'
Net income (loss)	-877	-301	-1,593	-1,392	'
Total assets	($27,329)	($21,875)	($27,329)	($21,875)	'

Segment_Information_Narrative_

Segment Information (Narrative) (Details) (Corporate/Other [Member], USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2012
Corporate/Other [Member]	'
Segment Reporting Information [Line Items]	'
Equity Method Investment, Realized Gain (Loss)	$641

Segregated_Portfolio_Cell_Rein2

Segregated Portfolio Cell Reinsurance Segment (Details) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Fixed income securities, at estimated fair value (amortized cost, $32,863; $30,874)	$153,259	'	$148,976	'	'	'
Equity securities, at estimated fair value (cost, $7,039; $7,043)	23,103	'	23,200	'	'	'
Total investments	217,700	'	201,897	'	'	'
Cash and cash equivalents	51,345	'	48,075	49,368	'	52,448
Reinsurance recoverable on paid and unpaid losses and LAE	19,222	'	19,676	'	'	'
Accrued investment income	915	'	858	'	'	'
Deferred acquisition costs	11,571	'	9,497	'	'	'
Other assets	16,861	'	14,902	'	'	'
Total assets	417,319	'	380,752	378,943	'	'
Reserves for unpaid losses and LAE	126,466	123,365	117,728	115,685	111,521	106,077
Unearned premium reserves	90,191	'	73,775	'	'	'
Accounts payable and accrued expenses	23,811	'	23,540	'	'	'
Segregated portfolio cell dividend payable	20,805	'	17,354	'	'	'
Policyholder dividends payable	2,536	'	2,312	'	'	'
Total liabilities	273,177	'	244,897	'	'	'
Preferred stock outstanding	0	'	0	'	'	'
Total shareholders' equity	144,142	140,801	135,855	134,345	130,551	128,259
Total liabilities and shareholders' equity	417,319	'	380,752	'	'	'
Equity securities Cost or Amortized Cost	170,720	'	165,948	'	'	'
Segregated Portfolio Cell Reinsurance Segment [Member]	'	'	'	'	'	'
Fixed income securities, at estimated fair value (amortized cost, $32,863; $30,874)	32,644	'	30,931	'	'	'
Equity securities, at estimated fair value (cost, $7,039; $7,043)	8,925	'	7,612	'	'	'
Total investments	41,569	'	38,543	'	'	'
Cash and cash equivalents	2,252	'	1,495	'	'	'
Reinsurance recoverable on paid and unpaid losses and LAE	4,218	'	4,716	'	'	'
Deferred acquisition costs	5,396	'	4,160	'	'	'
Other assets	5,277	'	4,361	'	'	'
Due from affiliates, net	18,603	'	12,803	'	'	'
Total assets	77,315	'	66,078	68,124	'	'
Reserves for unpaid losses and LAE	29,491	'	28,295	'	'	'
Unearned premium reserves	20,024	'	14,817	'	'	'
Accounts payable and accrued expenses	104	'	3	'	'	'
Segregated portfolio cell dividend payable	20,805	'	17,353	'	'	'
Policyholder dividends payable	164	'	150	'	'	'
Due to affiliates, net	6,698	'	5,435	'	'	'
Total liabilities	77,286	'	66,053	'	'	'
Preferred stock outstanding	29	'	25	'	'	'
Total shareholders' equity	29	'	25	'	'	'
Total liabilities and shareholders' equity	77,315	'	66,078	'	'	'
Fixed income securities amortized cost	32,863	'	30,874	'	'	'
Equity securities Cost or Amortized Cost	$7,039	'	$7,043	'	'	'

Commitments_and_Contingencies_

Commitments and Contingencies (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended	0 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Oct. 03, 2011	Sep. 30, 2013	Sep. 30, 2013	Jun. 12, 2013	Sep. 30, 2013
	AIG Arbitration [Member]	AIG Arbitration [Member]	AIG Arbitration [Member]	Eastern Alliance Insurance Co. v. Managepoint, LLC, d/b/a Management 2000 Group, Inc., a/k/a Management, Inc. [Member]	Eastern Alliance Insurance Co. v. Managepoint, LLC, d/b/a Management 2000 Group, Inc., a/k/a Management, Inc. [Member]
Loss Contingency, Lawsuit Filing Date	'	'	'September 6, 2011	'	'November 21, 2012
Loss Contingency, Trial or Alternative Dispute Resolution	'	'	'arbitration proceedings	'	'
Loss Contingency, Damages Sought, Value	$1,900	$4,100	'	'	'
Loss Contingency, Settlement Agreement, Date	'	'	'	'June 12, 2013	'