Donegal (DGICA) 10-Q 7 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014	Jul. 31, 2014
		Class A common stock [Member]	Class B common stock [Member]
Document Information [Line Items]	'	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Jun-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q2	'	'
Trading Symbol	'DGICA	'	'
Entity Registrant Name	'DONEGAL GROUP INC	'	'
Entity Central Index Key	'0000800457	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	21,061,397	5,576,775

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
Fixed maturities	'	'
Held to maturity, at amortized cost	$297,627,689	$240,370,277
Available for sale, at fair value	425,979,180	403,651,965
Equity securities, available for sale, at fair value	26,840,004	12,422,837
Investments in affiliates	38,352,714	35,685,433
Short-term investments, at cost, which approximates fair value	30,465,711	99,677,795
Total investments	819,265,298	791,808,307
Cash	20,566,819	27,636,416
Accrued investment income	5,614,616	5,423,531
Premiums receivable	137,198,297	123,904,629
Reinsurance receivable	278,563,475	244,239,113
Deferred policy acquisition costs	48,132,420	43,627,510
Deferred tax asset, net	15,957,784	20,310,558
Prepaid reinsurance premiums	121,200,782	112,663,942
Property and equipment, net	7,419,939	6,424,703
Accounts receivable - securities	0	1,187,866
Federal income taxes recoverable	756,666	420,952
Goodwill	5,625,354	5,625,354
Other intangible assets	958,010	958,010
Other	1,193,550	1,179,611
Total assets	1,462,453,010	1,385,410,502
Liabilities	'	'
Unpaid losses and loss expenses	526,371,272	495,619,269
Unearned premiums	417,150,626	382,734,642
Accrued expenses	14,758,909	19,265,097
Reinsurance balances payable	14,995,181	17,948,808
Borrowings under lines of credit	60,000,000	58,000,000
Cash dividends declared	0	3,299,182
Subordinated debentures	5,000,000	5,000,000
Accounts payable - securities	8,223,433	751,641
Due to affiliate	4,722,598	2,170,225
Drafts payable	3,683,432	1,386,285
Other	2,068,660	2,358,242
Total liabilities	1,056,974,111	988,533,391
Stockholders' Equity	'	'
Preferred stock, $.01 par value, authorized 2,000,000 shares; none issued	0	0
Additional paid-in capital	192,824,908	189,116,410
Accumulated other comprehensive income (loss)	4,901,381	-2,312,890
Retained earnings	220,578,243	222,888,887
Treasury stock	-13,101,682	-13,089,656
Total stockholders' equity	405,478,899	396,877,111
Total liabilities and stockholders' equity	1,462,453,010	1,385,410,502
Class A common stock [Member]	'	'
Stockholders' Equity	'	'
Common stock value	219,557	217,868
Total stockholders' equity	219,557	217,868
Class B common stock [Member]	'	'
Stockholders' Equity	'	'
Common stock value	56,492	56,492
Total stockholders' equity	$56,492	$56,492

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Class A common stock [Member]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	21,955,646	21,786,765
Common stock, shares outstanding	21,013,938	20,845,903
Class B common stock [Member]	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	5,649,240	5,649,240
Common stock, shares outstanding	5,576,775	5,576,775

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:	'	'	'	'
Net premiums earned	$136,589,156	$126,963,328	$270,137,417	$251,665,369
Investment income, net of investment expenses	4,614,484	4,670,558	9,230,260	9,486,001
Net realized investment gains	2,034,172	1,253,982	1,945,640	2,594,546
Lease income	213,792	210,557	426,582	425,954
Installment payment fees	1,681,699	1,733,642	3,323,249	3,443,883
Equity in earnings of Donegal Financial Services Corporation	348,625	675,568	757,867	1,764,474
Total revenues	145,481,928	135,507,635	285,821,015	269,380,227
Expenses:	'	'	'	'
Net losses and loss expenses	97,887,449	89,519,350	195,519,841	175,052,366
Amortization of deferred policy acquisition costs	22,025,000	19,910,000	43,344,000	39,470,000
Other underwriting expenses	21,546,607	21,129,407	42,005,326	39,880,918
Policyholder dividends	607,247	340,582	1,001,750	815,855
Interest	443,135	333,699	808,617	820,848
Other expenses	652,578	1,412,439	1,614,785	2,394,793
Total expenses	143,162,016	132,645,477	284,294,319	258,434,780
Income before income tax expense	2,319,912	2,862,158	1,526,696	10,945,447
Income tax expense	381,242	233,171	222,440	1,841,024
Net income	$1,938,670	$2,628,987	$1,304,256	$9,104,423
Class A common stock [Member]	'	'	'	'
Earnings per common share:	'	'	'	'
Common stock - basic	$0.08	$0.10	$0.05	$0.35
Common stock - diluted	$0.07	$0.10	$0.05	$0.35
Common stock - basic and diluted	'	'	$0.05	$0.35
Class B common stock [Member]	'	'	'	'
Earnings per common share:	'	'	'	'
Common stock - basic	$0.07	$0.09	$0.04	$0.32
Common stock - diluted	$0.07	$0.09	$0.04	$0.32
Common stock - basic and diluted	$0.07	$0.09	$0.04	$0.32

Consolidated_Statements_of_Inc1

Consolidated Statements of Income (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net realized investment gains	$2,034,172	$1,253,982	$1,945,640	$2,594,546
Income tax expense	381,242	233,171	222,440	1,841,024
Reclassification out of Accumulated Other Comprehensive Income (loss) [Member]	'	'	'	'
Net realized investment gains	2,034,172	253,982	1,945,640	2,594,546
Income tax expense	$691,619	$426,354	$661,518	$882,146

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income	$1,938,670	$2,628,987	$1,304,256	$9,104,423
Unrealized gain (loss) on securities:	'	'	'	'
Unrealized holding income (loss) during the period, net of income tax (benefit) expense	4,307,342	-21,171,130	8,498,393	-24,336,575
Reclassification adjustment for gains included in net income, net of income tax expense	-1,342,553	-827,628	-1,284,122	-1,712,400
Other comprehensive income (loss)	2,964,789	-21,998,758	7,214,271	-26,048,975
Comprehensive income (loss)	$4,903,459	($19,369,771)	$8,518,527	($16,944,552)

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Income tax (benefit) expense on unrealized holding (loss) income arising during the period	$2,288,044	($11,419,131)	$4,546,126	($13,144,225)
Income tax expense on reclassification adjustment for gains	$691,619	$426,354	$661,518	$882,146

Consolidated_Statement_of_Stoc

Consolidated Statement of Stockholders' Equity (USD $)	Total	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Class A common stock [Member]	Class B common stock [Member]
Beginning balance at Dec. 31, 2013	$396,877,111	$189,116,410	($2,312,890)	$222,888,887	($13,089,656)	$217,868	$56,492
Beginning balance, shares at Dec. 31, 2013	'	'	'	'	'	21,786,765	5,649,240
Issuance of common stock (stock compensation plans)	3,434,914	3,433,225	'	'	'	1,689	'
Issuance of common stock (stock compensation plans), shares	'	'	'	'	'	168,881	'
Net income	1,304,256	'	'	1,304,256	'	'	'
Cash dividends declared	-3,403,301	'	'	-3,403,301	'	'	'
Grant of stock options	'	211,599	'	-211,599	'	'	'
Tax benefit on exercise of stock options	63,674	63,674	'	'	'	'	'
Repurchase of treasury shares	-12,026	'	'	'	-12,026	'	'
Other comprehensive income (loss)	7,214,271	'	7,214,271	'	'	'	'
Ending balance at Jun. 30, 2014	$405,478,899	$192,824,908	$4,901,381	$220,578,243	($13,101,682)	$219,557	$56,492
Ending balance, shares at Jun. 30, 2014	'	'	'	'	'	21,955,646	5,649,240

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash Flows from Operating Activities:	'	'
Net income	$1,304,256	$9,104,423
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	1,690,186	1,731,939
Net realized investment gains	-1,945,640	-2,594,546
Equity in earnings of Donegal Financial Services Corporation	-757,867	-1,764,474
Changes in assets and liabilities:	'	'
Losses and loss expenses	30,752,003	30,822,822
Unearned premiums	34,415,984	29,053,529
Premiums receivable	-13,293,668	-14,796,642
Deferred acquisition costs	-4,504,910	-3,186,920
Deferred income taxes	468,165	1,462,275
Reinsurance receivable	-34,324,362	-24,634,256
Prepaid reinsurance premiums	-8,536,840	-7,688,112
Accrued investment income	-191,085	217,457
Due to affiliate	2,552,373	-5,195,486
Reinsurance balances payable	-2,953,627	6,409,821
Current income taxes	-335,714	-2,924,912
Accrued expenses	-4,506,188	-240,983
Other, net	1,993,623	1,000,041
Net adjustments	522,433	7,671,553
Net cash provided by operating activities	1,826,689	16,775,976
Cash Flows from Investing Activities:	'	'
Purchases of fixed maturities, held to maturity	-80,370,767	'
Purchases of fixed maturities, available for sale	-47,084,249	-105,331,013
Purchases of equity securities, available for sale	-14,310,274	-7,960,000
Maturity of fixed maturities:	'	'
Held to maturity	24,283,903	7,594,156
Available for sale	16,443,132	33,013,851
Sales of fixed maturities, available for sale	20,772,908	51,460,696
Sales of equity securities, available for sale	4,858,654	7,964,080
Net purchases of property and equipment	-1,428,190	-334,227
Net decrease in investment in affiliates	0	465,000
Net sales of short-term investments	69,212,084	8,913,405
Net cash used in investing activities	-7,622,799	-4,214,052
Cash Flows from Financing Activities:	'	'
Cash dividends paid	-6,702,483	-6,292,981
Issuance of common stock	3,441,022	4,889,211
Purchase of treasury stock	-12,026	'
Payments on subordinated debentures	0	-15,465,000
Payments on line of credit	-1,000,000	-9,000,000
Borrowings under lines of credit	3,000,000	18,500,000
Net cash used in financing activities	-1,273,487	-7,368,770
Net (decrease) increase in cash	-7,069,597	5,193,154
Cash at beginning of period	27,636,416	19,801,290
Cash at end of period	20,566,819	24,994,444
Cash paid during period - Interest	675,313	831,215
Net cash paid during period - Taxes	$0	$3,100,000

Organization

Organization	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Organization	'
	1-	Organization
	Donegal Mutual Insurance Company (“Donegal Mutual”) organized us as an insurance holding company on August 26, 1986. Our insurance subsidiaries, Atlantic States Insurance Company (“Atlantic States”), Southern Insurance Company of Virginia (“Southern”), Le Mars Insurance Company (“Le Mars”), the Peninsula Insurance Group (“Peninsula”), which consists of Peninsula Indemnity Company and The Peninsula Insurance Company, Sheboygan Falls Insurance Company (“Sheboygan”) and Michigan Insurance Company (“MICO”), write personal and commercial lines of property and casualty coverages exclusively through a network of independent insurance agents in certain Mid-Atlantic, Midwestern, New England and Southern states. We also own 48.2% of the outstanding stock of Donegal Financial Services Corporation (“DFSC”), a grandfathered unitary savings and loan holding company that owns Union Community Bank (“UCB”), a state savings bank. UCB has 13 banking offices, all of which are located in Lancaster County, Pennsylvania. Donegal Mutual owns the remaining 51.8% of the outstanding stock of DFSC.
	We have four segments: our investment function, our personal lines of insurance, our commercial lines of insurance and our investment in DFSC. The personal lines products of our insurance subsidiaries consist primarily of homeowners and private passenger automobile policies. The commercial lines products of our insurance subsidiaries consist primarily of commercial automobile, commercial multi-peril and workers’ compensation policies.
	At June 30, 2014, Donegal Mutual held approximately 37% of our outstanding Class A common stock and approximately 76% of our outstanding Class B common stock. This ownership provides Donegal Mutual with approximately 65% of the total voting power of our common stock. We believe Donegal Mutual’s voting control is beneficial to us for the reasons we describe in our Annual Report on Form 10-K. Our insurance subsidiaries and Donegal Mutual have interrelated operations due to a pooling agreement and other intercompany agreements and transactions. While each company maintains its separate corporate existence, our insurance subsidiaries and Donegal Mutual conduct business together as the Donegal Insurance Group. As such, Donegal Mutual and our insurance subsidiaries share the same business philosophy, the same management, the same employees and the same facilities and offer the same types of insurance products.
	Atlantic States, our largest subsidiary, participates in a pooling agreement with Donegal Mutual. Under the pooling agreement, the two companies pool their insurance business and each company receives an allocated percentage of the pooled business. Atlantic States has an 80% share of the results of the pooled business, and Donegal Mutual has a 20% share of the results of the pooled business.
	The same executive management and underwriting personnel administer products, classes of business underwritten, pricing practices and underwriting standards of Donegal Mutual and our insurance subsidiaries. In addition, as the Donegal Insurance Group, Donegal Mutual and our insurance subsidiaries share a combined business plan to achieve market penetration and underwriting profitability objectives. The products our insurance subsidiaries and Donegal Mutual market are generally complementary, thereby allowing the Donegal Insurance Group to offer a broader range of products to a given market and to expand the Donegal Insurance Group’s ability to service an entire personal lines or commercial lines account. Distinctions within the products of Donegal Mutual and our insurance subsidiaries generally relate to specific risk profiles targeted within similar classes of business, such as preferred tier versus standard tier products, but we do not allocate all of the standard risk gradients to one company. Therefore, the underwriting profitability of the business the individual companies write directly will vary. However, as the risk characteristics of all business Donegal Mutual and Atlantic States write directly are homogenized within the underwriting pool, Donegal Mutual and Atlantic States share the underwriting results in proportion to their respective participation in the pool. Pooled business represents the predominant percentage of the net underwriting activity of both Donegal Mutual and Atlantic States.
	On February 23, 2009, our board of directors authorized a share repurchase program pursuant to which we may purchase up to 300,000 shares of our Class A common stock at prices prevailing from time to time in the open market subject to the provisions of applicable rules of the Securities and Exchange Commission (the “SEC”) and in privately negotiated transactions. We purchased 846 shares of our Class A common stock under this program during the six months ended June 30, 2014. We did not purchase any shares under this program during the six-month period ended June 30, 2013. We have purchased a total of 296,778 shares of our Class A common stock under this program from its inception through June 30, 2014.
	On July 18, 2013, our board of directors authorized a share repurchase program pursuant to which we have the authority to purchase up to 500,000 additional shares of our Class A common stock at prices prevailing from time to time in the open market subject to the provisions of applicable rules of the SEC and in privately negotiated transactions. We did not purchase any shares of our Class A common stock under this program during the six-month period ended June 30, 2014.

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	2 -	Basis of Presentation
	Our financial information for the interim periods included in this Form 10-Q Report is unaudited; however, such information reflects all adjustments, consisting only of normal recurring adjustments that, in the opinion of our management, are necessary for a fair presentation of our financial position, results of operations and cash flows for those interim periods. Our results of operations for the six months ended June 30, 2014 are not necessarily indicative of the results of operations we expect for the year ending December 31, 2014.
	You should read these interim financial statements in conjunction with the financial statements and the notes to our financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2013.

Earnings_Per_Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	3-	Earnings Per Share
	We have two classes of common stock, which we refer to as our Class A common stock and our Class B common stock. Our certificate of incorporation provides that whenever our board of directors declares a dividend on our Class B common stock, our board of directors shall simultaneously declare a dividend on our Class A common stock that is payable to the holders of our Class A common stock at the same time and as of the same record date at a rate that is at least 10% greater than the rate at which our board of directors declared a dividend on our Class B common stock. Accordingly, we use the two-class method to compute our earnings per common share. The two-class method is an earnings allocation formula that determines earnings per share separately for each class of common stock based on dividends we have declared and an allocation of our remaining undistributed earnings using a participation percentage that reflects the dividend rights of each class. The table below presents for the periods indicated a reconciliation of the numerators and denominators we used to compute basic and diluted net income per share for each class of our common stock:
			Three Months Ended June 30,
			2014				2013
			Class A		Class B		Class A		Class B
			(in thousands, except per share data)
	Basic and diluted net income per share:
	Numerator:
	Allocation of net income		$	1,577	$	362	$	2,102	$	527
	Denominator:
	Weighted-average shares outstanding			20,961,526		5,576,775		21,202,571		5,576,775
	Basic net income per share		$	0.08	$	0.07	$	0.1	$	0.09
	Diluted net income per share:
	Numerator:
	Allocation of net income		$	1,577	$	362	$	2,102	$	527
	Denominator:
	Number of shares used in basic computation			20,961,526		5,576,775		21,202,571		5,576,775
	Weighted-average shares effect of dilutive securities
	Add: Director and employee stock options			388,838		—		401,309		—
	Number of shares used in per share computations			21,350,364		5,576,775		21,603,880		5,576,775
	Diluted net income per share		$	0.07	$	0.07	$	0.1	$	0.09
			Six Months Ended June 30,
			2014				2013
			Class A		Class B		Class A		Class B
			(in thousands, except per share data)
	Basic and diluted net income per share:
	Numerator:
	Allocation of net income		$	1,067	$	237	$	7,304	$	1,801
	Denominator:
	Weighted-average shares outstanding			20,917,529		5,576,775		20,637,801		5,576,775
	Basic net income per share		$	0.05	$	0.04	$	0.35	$	0.32
	Diluted net income per share:
	Numerator:
	Allocation of net income		$	1,067	$	237	$	7,304	$	1,801
	Denominator:
	Number of shares used in basic computation			20,917,529		5,576,775		20,637,801		5,576,775
	Weighted-average shares effect of dilutive securities
	Add: Director and employee stock options			384,512		—		346,296		—
	Number of shares used in per share computations			21,302,041		5,576,775		20,984,097		5,576,775
	Diluted net income per share		$	0.05	$	0.04	$	0.35	$	0.32
	We did not include outstanding options to purchase the following number of shares of Class A common stock in our computation of diluted earnings per share because the exercise price of the options was greater than the average market price of our Class A common stock during the applicable period:
			Three Months Ended June 30,				Six Months Ended June 30,
			2014		2013		2014		2013
	Number of options to purchase Class A shares excluded			2,523,500		1,199,000		2,548,500		1,199,000

Reinsurance

Reinsurance	6 Months Ended
	Jun. 30, 2014
Insurance [Abstract]	'
Reinsurance	'
	4-	Reinsurance
	Atlantic States and Donegal Mutual have participated in a pooling agreement since 1986 under which each company places all of its direct written premiums into the pool, and Atlantic States and Donegal Mutual then share the underwriting results of the pool in accordance with the terms of the pooling agreement. Atlantic States has an 80% share of the results of the pool, and Donegal Mutual has a 20% share of the results of the pool.
	Our insurance subsidiaries and Donegal Mutual purchase certain third-party reinsurance on a combined basis. Le Mars, MICO, Peninsula and Sheboygan also purchase separate third-party reinsurance that provides coverage that we believe is commensurate with their relative size and exposures. Our insurance subsidiaries use several different reinsurers, all of which, consistent with requirements of our insurance subsidiaries and Donegal Mutual, have an A.M. Best rating of A- (Excellent) or better or, with respect to foreign reinsurers, have a financial condition that, in the opinion of our management, is equivalent to a company with at least an A- rating from A.M. Best. The following information describes the external reinsurance our insurance subsidiaries have in place at June 30, 2014:
		•	excess of loss reinsurance, under which losses are automatically reinsured, through a series of reinsurance agreements, over a set retention (generally $1.0 million), and
		•	catastrophe reinsurance, under which Donegal Mutual, Atlantic States and Southern recover, through a series of reinsurance agreements, 100% of an accumulation of many losses resulting from a single event, including natural disasters, over a set retention (generally $5.0 million) and after exceeding an annual aggregate deductible (generally $1.5 million) up to aggregate losses of $149.0 million per occurrence.
	Our insurance subsidiaries and Donegal Mutual also purchase facultative reinsurance to cover exposures from losses that exceed the limits their third-party reinsurance agreements provide.
	MICO maintains a quota-share reinsurance agreement with third-party reinsurers to reduce its net exposures. Effective January 1, 2014, the quota-share reinsurance percentage was 20%.
	In addition to the pooling agreement and third-party reinsurance, our insurance subsidiaries have various reinsurance agreements with Donegal Mutual.
	Other than the changes we discuss above, we have made no significant changes to our third-party reinsurance or the reinsurance agreements between our insurance subsidiaries and Donegal Mutual during the six months ended June 30, 2014.

Investments

Investments	6 Months Ended
	Jun. 30, 2014
Investments Debt And Equity Securities [Abstract]	'
Investments	'
	5-	Investments
	The amortized cost and estimated fair values of our fixed maturities and equity securities at June 30, 2014 were as follows:
			Amortized Cost		Gross Unrealized		Gross Unrealized		Estimated Fair
					Gains		Losses		Value
			(in thousands)
	Held to Maturity
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	51,905	$	1,052	$	1	$	52,956
	Obligations of states and political subdivisions			94,992		7,744		—	$	102,736
	Corporate securities			52,907		1,052		25	$	53,934
	Mortgage-backed securities			97,824		1,434		132		99,126
	Totals		$	297,628	$	11,282	$	158	$	308,752
			Amortized Cost		Gross Unrealized		Gross Unrealized		Estimated Fair
					Gains		Losses		Value
			(in thousands)
	Available for Sale
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	16,097	$	184	$	13	$	16,268
	Obligations of states and political subdivisions			251,191		18,001		12		269,180
	Corporate securities			60,134		1,325		2		61,457
	Mortgage-backed securities			77,207		1,895		28		79,074
	Fixed maturities			404,629		21,405		55		425,979
	Equity securities			25,908		958		26		26,840
	Totals		$	430,537	$	22,363	$	81	$	452,819
	At June 30, 2014, our holdings of obligations of states and political subdivisions included general obligation bonds with an aggregate fair value of $277.6 million and an amortized cost of $259.4 million. Our holdings at June 30, 2014 also included special revenue bonds with an aggregate fair value of $94.3 million and an amortized cost of $86.8 million. With respect to both categories of these bonds, we held no securities of any issuer that constituted more than 10% of the category at June 30, 2014. Education bonds and water and sewer utility bonds represented 60% and 24%, respectively, of our total investments in special revenue bonds based on the carrying values of these investments at June 30, 2014. Many of the issuers of the special revenue bonds we held at June 30, 2014 have the authority to impose ad valorem taxes. In that respect, many of the special revenue bonds we held are similar to general obligation bonds.
	The amortized cost and estimated fair values of our fixed maturities and equity securities at December 31, 2013 were as follows:
			Amortized Cost		Gross Unrealized		Gross Unrealized		Estimated Fair
					Gains		Losses		Value
			(in thousands)
	Held to Maturity
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	47,946	$	—	$	870	$	47,076
	Obligations of states and political subdivisions			108,435		465		446		108,454
	Corporate securities			14,875		17		112		14,780
	Mortgage-backed securities			69,114		33		667		68,480
	Totals		$	240,370	$	515	$	2,095	$	238,790
			Amortized Cost		Gross Unrealized		Gross Unrealized		Estimated Fair
					Gains		Losses		Value
			(in thousands)
	Available for Sale
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	14,272	$	118	$	57	$	14,333
	Obligations of states and political subdivisions			265,783		11,779		15		277,547
	Corporate securities			39,940		775		43		40,672
	Mortgage-backed securities			70,259		923		82		71,100
	Fixed maturities			390,254		13,595		197		403,652
	Equity securities			12,168		348		93		12,423
	Totals		$	402,422	$	13,943	$	290	$	416,075
	At December 31, 2013, our holdings of obligations of states and political subdivisions included general obligation bonds with an aggregate fair value of $294.1 million and an amortized cost of $284.9 million. Our holdings also included special revenue bonds with an aggregate fair value of $91.9 million and an amortized cost of $89.3 million. With respect to both categories, we held no securities of any issuer that constituted more than 10% of the category at December 31, 2013. Education bonds and water and sewer utility bonds represented 56% and 23%, respectively, of our total investments in special revenue bonds based on the carrying values of these investments at December 31, 2013. Many of the issuers of the special revenue bonds we held at December 31, 2013 have the authority to impose ad valorem taxes. In that respect, many of the special revenue bonds we held are similar to general obligation bonds.
	We made reclassifications from available for sale to held to maturity of fixed maturities at fair value on November 30, 2013. The following table summarizes the reclassifications by type of securities at November 30, 2013:
			Amortized Cost		Estimated Fair
					Value
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	50,627,225	$	47,914,311
	Obligations of states and political subdivisions			88,456,842		79,866,801
	Corporate securities			15,745,976		14,879,294
	Mortgage-backed securities			72,465,250		69,567,883
	Totals		$	227,295,293	$	212,228,289
	We have segregated within accumulated other comprehensive income the net unrealized losses of $15.1 million arising prior to the November 30, 2013 reclassification date for fixed maturities reclassified from available for sale to held to maturity. We will amortize this balance over the remaining life of the related securities as an adjustment to yield in a manner consistent with the accretion of discount on the same fixed maturities. During the six months ended June 30, 2014, amortization of $617,325 was recorded in accumulated other comprehensive income. At June 30, 2014 and December 31, 2013, net unrealized losses of $14.4 million and $15.0 million, respectively, remained within accumulated other comprehensive income.
	We show below the amortized cost and estimated fair value of our fixed maturities at June 30, 2014 by contractual maturity. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
			Amortized Cost		Estimated Fair
					Value
			(in thousands)
	Held to maturity
	Due in one year or less		$	3,640	$	3,665
	Due after one year through five years			32,539		32,902
	Due after five years through ten years			82,712		84,777
	Due after ten years			80,913		88,282
Mortgage-backed securities			97,824		99,126
Total held to maturity		$	297,628	$	308,752
Available for sale
Due in one year or less		$	12,000	$	12,084
Due after one year through five years			67,977		69,662
Due after five years through ten years			119,264		126,695
Due after ten years			128,181		138,464
Mortgage-backed securities			77,207		79,074
Total available for sale		$	404,629	$	425,979
Gross realized gains and losses from investments before applicable income taxes were as follows:
		Three Months Ended June 30,				Six Months Ended June 30,
		2014		2013		2014		2013
		(in thousands)				(in thousands)
Gross realized gains:
Fixed maturities		$	1,325	$	1,389	$	1,348	$	2,340
Equity securities			709		267		652		741
			2,034		1,656		2,000		3,081
Gross realized losses:
Fixed maturities			—		10		1		24
Equity securities			—		392		53		462
			—		402		54		486
Net realized gains		$	2,034	$	1,254	$	1,946	$	2,595
We held fixed maturities and equity securities with unrealized losses representing declines that we considered temporary at June 30, 2014 as follows:
		Less Than 12 Months				More Than 12 Months
		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
		(in thousands)
U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	2,663	$	13	$	264	$	1
Obligations of states and political subdivisions			—		—		1,572		12
Corporate securities			6,919		27		—		—
Mortgage-backed securities			9,966		50		13,083		110
Equity securities			4,028		26		—		—
Totals		$	23,576	$	116	$	14,919	$	123
We held fixed maturities and equity securities with unrealized losses representing declines that we considered temporary at December 31, 2013 as follows:
		Less Than 12 Months				More Than 12 Months
		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
		(in thousands)
U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	50,803	$	822	$	4,642	$	104
Obligations of states and political subdivisions			65,171		363		13,405		99
Corporate securities			16,694		84		6,852		72
Mortgage-backed securities			72,878		536		19,014		213
Equity securities			1,629		93		—		—
Totals		$	207,175	$	1,898	$	43,913	$	488
We make estimates concerning the valuation of our investments and the recognition of other-than-temporary declines in the value of our investments. For equity securities, we write down the investment to its fair value, and we reflect the amount of the write-down as a realized loss in our results of operations when we consider the decline in value of an individual investment to be other than temporary. We individually monitor all investments for other-than-temporary declines in value. Generally, we assume there has been an other-than-temporary decline in value if an individual equity security has depreciated in value by more than 20% of original cost and has been in such an unrealized loss position for more than six months. We held six equity securities that were in an unrealized loss position at June 30, 2014. Based upon our analysis of general market conditions and underlying factors impacting these equity securities, we considered these declines in value to be temporary. With respect to a debt security that is in an unrealized loss position, we first assess if we intend to sell the debt security. If we determine we intend to sell the debt security, we recognize the impairment loss in our results of operations. If we do not intend to sell the debt security, we determine whether it is more likely than not that we will be required to sell the debt security prior to recovery. If we determine it is more likely than not that we will be required to sell the debt security prior to recovery, we recognize an impairment loss in our results of operations. If we determine it is more likely than not that we will not be required to sell the debt security prior to recovery, we then evaluate whether a credit loss has occurred. We determine whether a credit loss has occurred by comparing the amortized cost of the debt security to the present value of the cash flows we expect to collect. If we expect a cash flow shortfall, we consider that a credit loss has occurred. If we determine that a credit loss has occurred, we consider the impairment to be other than temporary. We then recognize the amount of the impairment loss related to the credit loss in our results of operations, and we recognize the remaining portion of the impairment loss in our other comprehensive income, net of applicable taxes. In addition, we may write down securities in an unrealized loss position based on a number of other factors, including when the fair value of an investment is significantly below its cost, when the financial condition of the issuer of a security has deteriorated, the occurrence of industry, company or geographic events that have negatively impacted the value of a security and rating agency downgrades. We held 30 debt securities that were in an unrealized loss position at June 30, 2014. Based upon our analysis of general market conditions and underlying factors impacting these debt securities, we considered these declines in value to be temporary.
We amortize premiums and discounts on debt securities over the life of the security as an adjustment to yield using the effective interest method. We compute realized investment gains and losses using the specific identification method.
We amortize premiums and discounts on mortgage-backed debt securities using anticipated prepayments.
We account for investments in our affiliates using the equity method of accounting. Under this method, we record our investment at cost, with adjustments for our share of our affiliates’ earnings and losses as well as changes in the equity of our affiliates due to unrealized gains and losses. Our investments in affiliates include our 48.2% ownership interest in DFSC. We include our share of DFSC’s net income in our results of operations. We have compiled the following summary financial information for DFSC at June 30, 2014 and December 31, 2013 and for the three months and six months ended June 30, 2014 and 2013, respectively, from the financial statements of DFSC. The financial information of DFSC at June 30, 2014 and for the three and six months then ended is unaudited.
Balance sheets:		June 30,		December 31,
		2014		2013
		(in thousands)
Total assets		$	519,366	$	512,578
Total liabilities		$	439,906	$	438,649
Stockholders’ equity			79,460		73,929
Total liabilities and stockholders’ equity		$	519,366	$	512,578
		Three Months Ended June 30,				Six Months Ended June 30,
Income statements:		2014		2013		2014		2013
		(in thousands)				(in thousands)
Net income		$	723	$	1,401	$	1,572	$	3,659

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	6 -	Segment Information
	We evaluate the performance of our personal lines and commercial lines segments based upon the underwriting results of our insurance subsidiaries using statutory accounting principles (“SAP”) that various state insurance departments prescribe or permit. Our management uses SAP to measure the performance of our insurance subsidiaries instead of United States generally accepted accounting principles (“GAAP”). Financial data by segment is as follows:
			Three Months Ended June 30,
			2014			2013
			(in thousands)
	Revenues:
	Premiums earned
	Commercial lines		$	56,696		$	49,612
	Personal lines			79,893			77,351
	GAAP premiums earned			136,589			126,963
	Net investment income			4,614			4,671
	Realized investment gains			2,034			1,254
	Equity in earnings of DFSC			349			676
	Other			1,896			1,944
	Total revenues		$	145,482		$	135,508
	Income before income taxes:
	Underwriting loss:
	Commercial lines		$	(5,827	)	$	(3,079	)
	Personal lines			(3,125	)		(3,448	)
	SAP underwriting loss			(8,952	)		(6,527	)
	GAAP adjustments			3,475			2,591
	GAAP underwriting loss			(5,477	)		(3,936	)
	Net investment income			4,614			4,671
	Realized investment gains			2,034			1,254
	Equity in earnings of DFSC			349			676
	Other			800			197
	Income before income taxes		$	2,320		$	2,862
			Six Months Ended June 30,
			2014			2013
			(in thousands)
	Revenues:
	Premiums earned
	Commercial lines		$	111,042		$	97,243
	Personal lines			159,095			154,422
	GAAP premiums earned			270,137			251,665
	Net investment income			9,230			9,486
	Realized investment gains			1,946			2,595
	Equity in earnings of DFSC			758			1,764
	Other			3,750			3,870
	Total revenues		$	285,821		$	269,380
	Income before income taxes:
	Underwriting loss:
	Commercial lines		$	(11,175	)	$	(4,670	)
	Personal lines			(6,959	)		(3,224	)
	SAP underwriting loss			(18,134	)		(7,894	)
	GAAP adjustments			6,400			4,340
	GAAP underwriting loss			(11,734	)		(3,554	)
	Net investment income			9,230			9,486
	Realized investment gains			1,946			2,595
	Equity in earnings of DFSC			758			1,764
	Other			1,327			654
	Income before income taxes		$	1,527		$	10,945

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Borrowings	'
	7-	Borrowings
	Lines of Credit
	In June 2014, we renewed our existing credit agreement with Manufacturers and Traders Trust Company (“M&T”) relating to a $60.0 million unsecured, revolving line of credit. The line of credit expires in July 2017. We have the right to request a one-year extension of the credit agreement as of each anniversary date of the agreement. At June 30, 2014, we had $45.0 million in outstanding borrowings and had the ability to borrow an additional $15.0 million at interest rates equal to M&T’s current prime rate or the then current LIBOR rate plus 2.25%. The interest rate on our outstanding borrowings is adjustable quarterly. At June 30, 2014, the interest rate on our outstanding borrowings was 2.41%. We pay a fee of 0.2% per annum on the loan commitment amount regardless of usage. The credit agreement requires our compliance with certain covenants. These covenants include minimum levels of our net worth, leverage ratio, statutory surplus and the A.M. Best ratings of our insurance subsidiaries. We were in compliance with all requirements of the credit agreement during the six months ended June 30, 2014.
	MICO is a member of the Federal Home Loan Bank (“FHLB”) of Indianapolis. Through its membership, MICO has the ability to issue debt to the FHLB of Indianapolis in exchange for cash advances. MICO had no outstanding borrowings with the FHLB of Indianapolis at December 31, 2013 or June 30, 2014. The table below presents the amount of FHLB of Indianapolis stock MICO purchased, collateral pledged and assets related to MICO’s membership at June 30, 2014.
	FHLB stock purchased and owned as part of the agreement		$	252,100
	Collateral pledged, at par (carrying value $2,673,959)			3,700,000
	Borrowing capacity currently available			2,301,231
	Atlantic States is a member of the FHLB of Pittsburgh. Through its membership, Atlantic States has the ability to issue debt to the FHLB of Pittsburgh in exchange for cash advances. In the first quarter of 2013, Atlantic States issued secured debt in the principal amount of $15.0 million to the FHLB of Pittsburgh in exchange for cash advances in the amount of $15.0 million. The interest rate on the advances was .31% at June 30, 2014. The table below presents the amount of FHLB of Pittsburgh stock Atlantic States purchased, collateral pledged and assets related to Atlantic States’ membership in the FHLB of Pittsburgh at June 30, 2014.
	FHLB stock purchased and owned as part of the agreement		$	941,700
	Collateral pledged, at par (carrying value $17,089,256)			20,500,000
	Borrowing capacity currently available			1,305,523
	Subordinated Debentures
	In January 2002, West Bend Mutual Insurance Company (“West Bend”), the prior owner of MICO, purchased a $5.0 million surplus note from MICO at face value to increase MICO’s statutory surplus. On December 1, 2010, Donegal Mutual purchased the surplus note from West Bend at face value. The surplus note carries an interest rate of 5.00%, and any repayment of principal or payment of interest on the surplus note requires prior approval of the Michigan Department of Insurance and Financial Services.

ShareBased_Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Share-Based Compensation	'
	8-	Share–Based Compensation
	We measure all share-based payments to employees, including grants of stock options, and use a fair-value-based method for the recording of related compensation expense in our consolidated statements of income. In determining the expense we record for stock options granted to directors and employees of our subsidiaries and affiliates, we estimate the fair value of each option award on the date of grant using the Black-Scholes option pricing model. The significant assumptions we utilize in applying the Black-Scholes option pricing model are the risk-free interest rate, the expected term, the dividend yield and the expected volatility.
	We charged compensation expense related to our stock compensation plans against income before income taxes of $497,614 and $155,523 for the three months ended June 30, 2014 and 2013, respectively, with a corresponding income tax benefit of $174,165 and $54,433, respectively. We charged compensation expense related to our stock compensation plans against income before income taxes of $1.0 million and $327,828 for the six months ended June 30, 2014 and 2013, respectively, with a corresponding income tax benefit of $363,484 and $114,740, respectively. At June 30, 2014, we had $3.6 million of unrecognized compensation expense related to nonvested share-based compensation granted under our stock compensation plans. We expect to recognize this cost over a weighted average period of 1.9 years.
	We received cash from option exercises under all stock compensation plans for the three months ended June 30, 2014 and 2013 of $1.2 million and $1.9 million, respectively. We received cash from option exercises under all stock compensation plans for the six months ended June 30, 2014 and 2013 of $1.4 million and $3.6 million, respectively. We realized actual tax benefits for the tax deductions from option exercises of share-based compensation of $52,159 and $87,952 for the three months ended June 30, 2014 and 2013, respectively. We realized actual tax benefits for the tax deductions from option exercises of share-based compensation of $63,674 and $186,881 for the six months ended June 30, 2014 and 2013, respectively.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	9-	Fair Value Measurements
	We account for financial assets using a framework that establishes a hierarchy that ranks the quality and reliability of the inputs, or assumptions, we use in the determination of fair value, and we classify financial assets and liabilities carried at fair value in one of the following three categories:
	Level 1 – quoted prices in active markets for identical assets and liabilities;
	Level 2 – directly or indirectly observable inputs other than Level 1 quoted prices; and
	Level 3 – unobservable inputs not corroborated by market data.
	For investments that have quoted market prices in active markets, we use the quoted market price as fair value and include these investments in Level 1 of the fair value hierarchy. We classify publicly-traded equity securities as Level 1. When quoted market prices in active markets are not available, we base fair values on quoted market prices of comparable instruments or price estimates we obtain from independent pricing services and include these investments in Level 2 of the fair value hierarchy. We classify our fixed maturity investments as Level 2. Our fixed maturity investments consist of U.S. Treasury securities and obligations of U.S. government corporations and agencies, obligations of states and political subdivisions, corporate securities and mortgage-backed securities.
	We present our investments in available-for-sale fixed maturity and equity securities at estimated fair value. The estimated fair value of a security may differ from the amount that could be realized if we sold the security in a forced transaction. In addition, the valuation of fixed maturity investments is more subjective when markets are less liquid, increasing the potential that the estimated fair value does not reflect the price at which an actual transaction would occur. We utilize nationally recognized independent pricing services to estimate fair values or obtain market quotations for substantially all of our fixed maturity and equity investments. These pricing services utilize market quotations for fixed maturity and equity securities that have quoted prices in active markets. For fixed maturity securities that generally do not trade on a daily basis, the pricing services prepare estimates of fair value measurements based predominantly on observable market inputs. The pricing services do not use broker quotes in determining the fair values of our investments. Our investment personnel review the estimates of fair value the pricing services provide to determine if the estimates we obtain are representative of fair values based upon our investment personnel’s general knowledge of the market, their research findings related to unusual fluctuations in value and their comparison of such values to execution prices for similar securities. Our investment personnel regularly monitor the market, current trading ranges for similar securities and the pricing of specific investments. Our investment personnel review all pricing estimates that we receive from the pricing services against their expectations with respect to pricing based on fair market curves, security ratings, coupon rates, security type and recent trading activity. Our investment personnel review documentation with respect to the pricing services’ pricing methodology that they obtain periodically to determine if the primary pricing sources, market inputs and pricing frequency for various security types are reasonable. At December 31, 2013, we received one estimate per security from the pricing services, and we priced substantially all of our Level 1 and Level 2 investments using those prices. At June 30, 2014, we received two estimates per security from the pricing services, and we priced substantially all of our Level 1 and Level 2 investments using those prices. In our review of the estimates the pricing services provided at June 30, 2014 and December 31, 2013, we did not identify any material discrepancies, and we did not make any adjustments to the estimates the pricing services provided.
	We present our cash and short-term investments at estimated fair value. We classify these items as Level 1.
	The carrying values in the balance sheet for premium receivables and reinsurance receivables and payables for premiums and paid losses and loss expenses approximate their fair values. The carrying amounts we report in the balance sheet for our subordinated debentures and borrowings under lines of credit approximate their fair values. We classify these items as Level 3.
	We evaluate our assets and liabilities on a recurring basis to determine the appropriate level at which to classify them for each reporting period.
	The following table presents our fair value measurements for our investments in available-for-sale fixed maturity and equity securities at June 30, 2014:
					Fair Value Measurements Using
			Fair Value		Quoted		Significant Other		Significant
					Prices in Active		Observable Inputs		Unobservable
					Markets for		(Level 2)		Inputs (Level 3)
					Identical Assets
					(Level 1)
			(in thousands)
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	16,268	$	—	$	16,268	$	—
	Obligations of states and political subdivisions			269,180		—		269,180		—
	Corporate securities			61,457		—		61,457		—
	Mortgage-backed securities			79,074		—		79,074		—
	Equity securities			26,840		17,539		9,301		—
	Totals		$	452,819	$	17,539	$	435,280	$	—
	We did not transfer any investments between Levels 1 and 2 during the six months ended June 30, 2014.
	The following table presents our fair value measurements for our investments in available-for-sale fixed maturity and equity securities at December 31, 2013:
					Fair Value Measurements Using
			Fair Value		Quoted		Significant Other		Significant
					Prices in Active		Observable Inputs		Unobservable
					Markets for		(Level 2)		Inputs (Level 3)
					Identical Assets
					(Level 1)
			(in thousands)
	U.S. Treasury securities and obligations of U.S. government corporations and agencies		$	14,333	$	—	$	14,333	$	—
	Obligations of states and political subdivisions			277,547		—		277,547		—
	Corporate securities			40,672		—		40,672		—
	Mortgage-backed securities			71,100		—		71,100		—
	Equity securities			12,423		6,468		5,955		—
	Totals		$	416,075	$	6,468	$	409,607	$	—

Income_Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	10 -	Income Taxes
	At June 30, 2014 and December 31, 2013, respectively, we had no material unrecognized tax benefits or accrued interest and penalties. Tax years 2010 through 2013 remained open for examination at June 30, 2014. We provide a valuation allowance when we believe it is more likely than not that we will not realize some portion of our tax asset. We established a valuation allowance of $440,778 related to a portion of the net operating loss carryforward of Le Mars at January 1, 2004. We have determined that we are not required to establish a valuation allowance for the other net deferred tax assets of $40.2 million and $39.6 million at June 30, 2014 and December 31, 2013, respectively, because it is more likely than not that we will realize these deferred tax assets through reversals of existing temporary differences, future taxable income and the implementation of tax planning strategies. We also have a net operating loss carryforward of $4.7 million related to Le Mars, which will begin to expire in 2020 if not previously utilized. This carryforward is subject to an annual limitation in the amount that we can use in any one year of approximately $376,000. We also have an alternative minimum tax credit carryforward of $10.0 million with an indefinite life.

Impact_of_New_Accounting_Stand

Impact of New Accounting Standards	6 Months Ended
	Jun. 30, 2014
Accounting Changes And Error Corrections [Abstract]	'
Impact of New Accounting Standards	'
	11 -	Impact of New Accounting Standards
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued guidance that requires an entity to provide information about amounts it reclassifies out of accumulated other comprehensive income. If GAAP requires an entity to reclassify amounts out of accumulated other comprehensive income to net income in their entirety in the same reporting period, the guidance requires an entity to present significant amounts it reclassifies out of accumulated other comprehensive income by the respective line items of net income, either on the face of the statement where the entity presents net income or in the notes to the entity’s financial statements,. For other amounts that GAAP does not require an entity to reclassify to net income in their entirety, the guidance requires an entity to cross-reference such amounts to other disclosures GAAP requires that provide additional detail about those amounts. The guidance was effective for interim and annual reporting periods after December 15, 2012. We adopted this new guidance as of January 1, 2013. Our adoption of this new guidance did not impact our financial position, results of operations or cash flows.
	In July 2013, the FASB issued a new standard that requires an entity to present an unrecognized tax benefit as a reduction of a deferred tax asset for a net operating loss carryforward or similar tax loss or tax credit carryforward, rather than as a liability, when the uncertain tax position would reduce the net operating loss or other carryforward under the tax law of the applicable jurisdiction and when the entity intends to use the deferred tax asset for that purpose. The new standard was effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We adopted this new guidance as of January 1, 2014. Our adoption of this new standard did not impact our financial position, results of operations or cash flows.

Impact_of_New_Accounting_Stand1

Impact of New Accounting Standards (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Changes And Error Corrections [Abstract]	'
Other Comprehensive Income	'
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued guidance that requires an entity to provide information about amounts it reclassifies out of accumulated other comprehensive income. If GAAP requires an entity to reclassify amounts out of accumulated other comprehensive income to net income in their entirety in the same reporting period, the guidance requires an entity to present significant amounts it reclassifies out of accumulated other comprehensive income by the respective line items of net income, either on the face of the statement where the entity presents net income or in the notes to the entity’s financial statements,. For other amounts that GAAP does not require an entity to reclassify to net income in their entirety, the guidance requires an entity to cross-reference such amounts to other disclosures GAAP requires that provide additional detail about those amounts. The guidance was effective for interim and annual reporting periods after December 15, 2012. We adopted this new guidance as of January 1, 2013. Our adoption of this new guidance did not impact our financial position, results of operations or cash flows.
	In July 2013, the FASB issued a new standard that requires an entity to present an unrecognized tax benefit as a reduction of a deferred tax asset for a net operating loss carryforward or similar tax loss or tax credit carryforward, rather than as a liability, when the uncertain tax position would reduce the net operating loss or other carryforward under the tax law of the applicable jurisdiction and when the entity intends to use the deferred tax asset for that purpose. The new standard was effective for fiscal years, and interim periods within those years, beginning after December 15, 2013. We adopted this new guidance as of January 1, 2014. Our adoption of this new standard did not impact our financial position, results of operations or cash flows.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Summary of Reconciliation of Numerators and Denominators Used in Basic and Diluted Per Share Computations	'
	The table below presents for the periods indicated a reconciliation of the numerators and denominators we used to compute basic and diluted net income per share for each class of our common stock:
		Three Months Ended June 30,
		2014				2013
		Class A		Class B		Class A		Class B
		(in thousands, except per share data)
	Basic and diluted net income per share:
	Numerator:
	Allocation of net income	$	1,577	$	362	$	2,102	$	527
	Denominator:
	Weighted-average shares outstanding		20,961,526		5,576,775		21,202,571		5,576,775
	Basic net income per share	$	0.08	$	0.07	$	0.1	$	0.09
	Diluted net income per share:
	Numerator:
	Allocation of net income	$	1,577	$	362	$	2,102	$	527
	Denominator:
	Number of shares used in basic computation		20,961,526		5,576,775		21,202,571		5,576,775
	Weighted-average shares effect of dilutive securities
	Add: Director and employee stock options		388,838		—		401,309		—
	Number of shares used in per share computations		21,350,364		5,576,775		21,603,880		5,576,775
	Diluted net income per share	$	0.07	$	0.07	$	0.1	$	0.09
		Six Months Ended June 30,
		2014				2013
		Class A		Class B		Class A		Class B
		(in thousands, except per share data)
	Basic and diluted net income per share:
	Numerator:
	Allocation of net income	$	1,067	$	237	$	7,304	$	1,801
	Denominator:
	Weighted-average shares outstanding		20,917,529		5,576,775		20,637,801		5,576,775
	Basic net income per share	$	0.05	$	0.04	$	0.35	$	0.32
	Diluted net income per share:
	Numerator:
	Allocation of net income	$	1,067	$	237	$	7,304	$	1,801
	Denominator:
	Number of shares used in basic computation		20,917,529		5,576,775		20,637,801		5,576,775
	Weighted-average shares effect of dilutive securities
	Add: Director and employee stock options		384,512		—		346,296		—
	Number of shares used in per share computations		21,302,041		5,576,775		20,984,097		5,576,775
	Diluted net income per share	$	0.05	$	0.04	$	0.35	$	0.32
Reconciliation of Diluted Shares Outstanding	'
	We did not include outstanding options to purchase the following number of shares of Class A common stock in our computation of diluted earnings per share because the exercise price of the options was greater than the average market price of our Class A common stock during the applicable period:
		Three Months Ended June 30,				Six Months Ended June 30,
		2014		2013		2014		2013
	Number of options to purchase Class A shares excluded		2,523,500		1,199,000		2,548,500		1,199,000

Investments_Tables

Investments (Tables)	6 Months Ended
	Jun. 30, 2014
Investments Debt And Equity Securities [Abstract]	'
Summary of Amortized Cost and Estimated Fair Value of Fixed Maturities and Equity Securities	'
	The amortized cost and estimated fair values of our fixed maturities and equity securities at June 30, 2014 were as follows:
		Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Gains		Losses
		(in thousands)
	Held to Maturity
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	51,905	$	1,052	$	1	$	52,956
	Obligations of states and political subdivisions		94,992		7,744		—	$	102,736
	Corporate securities		52,907		1,052		25	$	53,934
	Mortgage-backed securities		97,824		1,434		132		99,126
	Totals	$	297,628	$	11,282	$	158	$	308,752
		Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Gains		Losses
		(in thousands)
	Available for Sale
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	16,097	$	184	$	13	$	16,268
	Obligations of states and political subdivisions		251,191		18,001		12		269,180
	Corporate securities		60,134		1,325		2		61,457
	Mortgage-backed securities		77,207		1,895		28		79,074
	Fixed maturities		404,629		21,405		55		425,979
	Equity securities		25,908		958		26		26,840
	Totals	$	430,537	$	22,363	$	81	$	452,819
	The amortized cost and estimated fair values of our fixed maturities and equity securities at December 31, 2013 were as follows:
		Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Gains		Losses
		(in thousands)
	Held to Maturity
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	47,946	$	—	$	870	$	47,076
	Obligations of states and political subdivisions		108,435		465		446		108,454
	Corporate securities		14,875		17		112		14,780
	Mortgage-backed securities		69,114		33		667		68,480
	Totals	$	240,370	$	515	$	2,095	$	238,790
		Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Gains		Losses
		(in thousands)
	Available for Sale
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	14,272	$	118	$	57	$	14,333
	Obligations of states and political subdivisions		265,783		11,779		15		277,547
	Corporate securities		39,940		775		43		40,672
	Mortgage-backed securities		70,259		923		82		71,100
	Fixed maturities		390,254		13,595		197		403,652
	Equity securities		12,168		348		93		12,423
	Totals	$	402,422	$	13,943	$	290	$	416,075
Summary of Reclassifications of Fixed Maturities at Fair Value	'
	The following table summarizes the reclassifications by type of securities at November 30, 2013:
		Amortized Cost		Estimated Fair
				Value
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	50,627,225	$	47,914,311
	Obligations of states and political subdivisions		88,456,842		79,866,801
	Corporate securities		15,745,976		14,879,294
	Mortgage-backed securities		72,465,250		69,567,883
	Totals	$	227,295,293	$	212,228,289
Summary of Amortized Cost and Estimated Fair Value of Fixed Maturities by Contractual Maturity	'
	We show below the amortized cost and estimated fair value of our fixed maturities at June 30, 2014 by contractual maturity. Expected maturities may 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
		(in thousands)
	Held to maturity
	Due in one year or less	$	3,640	$	3,665
	Due after one year through five years		32,539		32,902
	Due after five years through ten years		82,712		84,777
	Due after ten years		80,913		88,282
	Mortgage-backed securities		97,824		99,126
	Total held to maturity	$	297,628	$	308,752
	Available for sale
	Due in one year or less	$	12,000	$	12,084
	Due after one year through five years		67,977		69,662
	Due after five years through ten years		119,264		126,695
	Due after ten years		128,181		138,464
	Mortgage-backed securities		77,207		79,074
	Total available for sale	$	404,629	$	425,979
Summary of Gross Realized Gains and Losses from Investments before Applicable Income Taxes	'
	Gross realized gains and losses from investments before applicable income taxes were as follows:
		Three Months Ended June 30,				Six Months Ended June 30,
		2014		2013		2014		2013
		(in thousands)				(in thousands)
	Gross realized gains:
	Fixed maturities	$	1,325	$	1,389	$	1,348	$	2,340
	Equity securities		709		267		652		741
			2,034		1,656		2,000		3,081
	Gross realized losses:
	Fixed maturities		—		10		1		24
	Equity securities		—		392		53		462
			—		402		54		486
	Net realized gains	$	2,034	$	1,254	$	1,946	$	2,595
Summary of Fixed Maturities and Equity Securities with Unrealized Losses	'
	We held fixed maturities and equity securities with unrealized losses representing declines that we considered temporary at June 30, 2014 as follows:
		Less Than 12 Months				More Than 12 Months
		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses
		(in thousands)
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	2,663	$	13	$	264	$	1
	Obligations of states and political subdivisions		—		—		1,572		12
	Corporate securities		6,919		27		—		—
	Mortgage-backed securities		9,966		50		13,083		110
	Equity securities		4,028		26		—		—
	Totals	$	23,576	$	116	$	14,919	$	123
	We held fixed maturities and equity securities with unrealized losses representing declines that we considered temporary at December 31, 2013 as follows:
		Less Than 12 Months				More Than 12 Months
		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses
		(in thousands)
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	50,803	$	822	$	4,642	$	104
	Obligations of states and political subdivisions		65,171		363		13,405		99
	Corporate securities		16,694		84		6,852		72
	Mortgage-backed securities		72,878		536		19,014		213
	Equity securities		1,629		93		—		—
	Totals	$	207,175	$	1,898	$	43,913	$	488
Summary of Financial Information	'
	The financial information of DFSC at June 30, 2014 and for the three and six months then ended is unaudited.
	Balance sheets:	June 30,		December 31,
		2014		2013
		(in thousands)
	Total assets	$	519,366	$	512,578
	Total liabilities	$	439,906	$	438,649
	Stockholders’ equity		79,460		73,929
	Total liabilities and stockholders’ equity	$	519,366	$	512,578
		Three Months Ended June 30,				Six Months Ended June 30,
	Income statements:	2014		2013		2014		2013
		(in thousands)				(in thousands)
	Net income	$	723	$	1,401	$	1,572	$	3,659

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Summary of Financial Data by Segment	'
	Financial data by segment is as follows:
		Three Months Ended June 30,
		2014			2013
		(in thousands)
	Revenues:
	Premiums earned
	Commercial lines	$	56,696		$	49,612
	Personal lines		79,893			77,351
	GAAP premiums earned		136,589			126,963
	Net investment income		4,614			4,671
	Realized investment gains		2,034			1,254
	Equity in earnings of DFSC		349			676
	Other		1,896			1,944
	Total revenues	$	145,482		$	135,508
	Income before income taxes:
	Underwriting loss:
	Commercial lines	$	(5,827	)	$	(3,079	)
	Personal lines		(3,125	)		(3,448	)
	SAP underwriting loss		(8,952	)		(6,527	)
	GAAP adjustments		3,475			2,591
	GAAP underwriting loss		(5,477	)		(3,936	)
	Net investment income		4,614			4,671
	Realized investment gains		2,034			1,254
	Equity in earnings of DFSC		349			676
	Other		800			197
	Income before income taxes	$	2,320		$	2,862
		Six Months Ended June 30,
		2014			2013
		(in thousands)
	Revenues:
	Premiums earned
	Commercial lines	$	111,042		$	97,243
	Personal lines		159,095			154,422
	GAAP premiums earned		270,137			251,665
	Net investment income		9,230			9,486
	Realized investment gains		1,946			2,595
	Equity in earnings of DFSC		758			1,764
	Other		3,750			3,870
	Total revenues	$	285,821		$	269,380
	Income before income taxes:
	Underwriting loss:
	Commercial lines	$	(11,175	)	$	(4,670	)
	Personal lines		(6,959	)		(3,224	)
	SAP underwriting loss		(18,134	)		(7,894	)
	GAAP adjustments		6,400			4,340
	GAAP underwriting loss		(11,734	)		(3,554	)
	Net investment income		9,230			9,486
	Realized investment gains		1,946			2,595
	Equity in earnings of DFSC		758			1,764
	Other		1,327			654
	Income before income taxes	$	1,527		$	10,945

Borrowings_Tables

Borrowings (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Amount of FHLB of Indianapolis/Pittsburgh Stock Purchased, Collateral Pledged and Assets Related to MICO's/Atlantic States Agreement	'
	The table below presents the amount of FHLB of Indianapolis stock MICO purchased, collateral pledged and assets related to MICO’s membership at June 30, 2014.
	FHLB stock purchased and owned as part of the agreement	$	252,100
	Collateral pledged, at par (carrying value $2,673,959)		3,700,000
	Borrowing capacity currently available		2,301,231
	The table below presents the amount of FHLB of Pittsburgh stock Atlantic States purchased, collateral pledged and assets related to Atlantic States’ membership in the FHLB of Pittsburgh at June 30, 2014.
	FHLB stock purchased and owned as part of the agreement	$	941,700
	Collateral pledged, at par (carrying value $17,089,256)		20,500,000
	Borrowing capacity currently available		1,305,523

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements for Investments in Available-for-Sale Fixed Maturity and Equity Securities	'
	The following table presents our fair value measurements for our investments in available-for-sale fixed maturity and equity securities at June 30, 2014:
				Fair Value Measurements Using
		Fair Value		Quoted		Significant Other		Significant
				Prices in Active		Observable Inputs		Unobservable
				Markets for		(Level 2)		Inputs (Level 3)
				Identical Assets
				(Level 1)
		(in thousands)
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	16,268	$	—	$	16,268	$	—
	Obligations of states and political subdivisions		269,180		—		269,180		—
	Corporate securities		61,457		—		61,457		—
	Mortgage-backed securities		79,074		—		79,074		—
	Equity securities		26,840		17,539		9,301		—
	Totals	$	452,819	$	17,539	$	435,280	$	—
	We did not transfer any investments between Levels 1 and 2 during the six months ended June 30, 2014.
	The following table presents our fair value measurements for our investments in available-for-sale fixed maturity and equity securities at December 31, 2013:
				Fair Value Measurements Using
		Fair Value		Quoted		Significant Other		Significant
				Prices in Active		Observable Inputs		Unobservable
				Markets for		(Level 2)		Inputs (Level 3)
				Identical Assets
				(Level 1)
		(in thousands)
	U.S. Treasury securities and obligations of U.S. government corporations and agencies	$	14,333	$	—	$	14,333	$	—
	Obligations of states and political subdivisions		277,547		—		277,547		—
	Corporate securities		40,672		—		40,672		—
	Mortgage-backed securities		71,100		—		71,100		—
	Equity securities		12,423		6,468		5,955		—
	Totals	$	416,075	$	6,468	$	409,607	$	—

Organization_Additional_Inform

Organization - Additional Information (Detail)	6 Months Ended				64 Months Ended		6 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Feb. 23, 2009	Jun. 30, 2014	Jul. 18, 2013	Jun. 30, 2014
	Office	Class A common stock [Member]	Class A common stock [Member]	Class A common stock [Member]	Class A common stock [Member]	Class A common stock [Member]	Class A common stock [Member]	Class A common stock [Member]	Class B common stock [Member]
	Segment		Stock Repurchase Program One [Member]	Stock Repurchase Program One [Member]	Stock Repurchase Program One [Member]	Stock Repurchase Program One [Member]	Stock Repurchase Program Two [Member]	Stock Repurchase Program Two [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'
Operations Commenced Date	26-Aug-86	'	'	'	'	'	'	'	'
Outstanding stock percentage	48.20%	'	'	'	'	'	'	'	'
Stock ownership percentage owned by third party	51.80%	'	'	'	'	'	'	'	'
Number of banking offices	13	'	'	'	'	'	'	'	'
Number of operating segments	4	'	'	'	'	'	'	'	'
Stock ownership percentage held by major shareholder	'	37.00%	'	'	'	'	'	'	76.00%
Voting power percentage of outstanding common stock	65.00%	'	'	'	'	'	'	'	'
Percentage of share in results of pooled business	80.00%	'	'	'	'	'	'	'	'
Percentage of share in results of pooled business owned by third party	20.00%	'	'	'	'	'	'	'	'
Number of common stock shares purchased	'	'	'	'	'	300,000	'	500,000	'
Common stock shares purchased	'	'	846	0	296,778	'	0	'	'

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014
Equity [Abstract]	'
Percentage of dividend declared on each share	10.00%

Earnings_Per_Share_Summary_of_

Earnings Per Share - Summary of Reconciliation of Numerators and Denominators Used in Basic and Diluted Per Share Computations (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Class A common stock [Member]	'	'	'	'
Numerator:	'	'	'	'
Allocation of net income	$1,577	$2,102	$1,067	$7,304
Denominator:	'	'	'	'
Weighted-average shares outstanding	20,961,526	21,202,571	20,917,529	20,637,801
Basic net income per share	$0.08	$0.10	$0.05	$0.35
Numerator:	'	'	'	'
Allocation of net income	1,577	2,102	1,067	7,304
Denominator:	'	'	'	'
Number of shares used in basic computation	20,961,526	21,202,571	20,917,529	20,637,801
Weighted-average shares effect of dilutive securities	'	'	'	'
Add: Director and employee stock options	388,838	401,309	384,512	346,296
Number of shares used in per share computations	21,350,364	21,603,880	21,302,041	20,984,097
Diluted net income per share	$0.07	$0.10	$0.05	$0.35
Class B common stock [Member]	'	'	'	'
Numerator:	'	'	'	'
Allocation of net income	362	527	237	1,801
Denominator:	'	'	'	'
Weighted-average shares outstanding	5,576,775	5,576,775	5,576,775	5,576,775
Basic net income per share	$0.07	$0.09	$0.04	$0.32
Numerator:	'	'	'	'
Allocation of net income	$362	$527	$237	$1,801
Denominator:	'	'	'	'
Number of shares used in basic computation	5,576,775	5,576,775	5,576,775	5,576,775
Weighted-average shares effect of dilutive securities	'	'	'	'
Add: Director and employee stock options	0	'	0	'
Number of shares used in per share computations	5,576,775	5,576,775	5,576,775	5,576,775
Diluted net income per share	$0.07	$0.09	$0.04	$0.32

Earnings_Per_Share_Reconciliat

Earnings Per Share - Reconciliation of Diluted Shares Outstanding (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Number of options to purchase Class A shares excluded	2,523,500	1,199,000	2,548,500	1,199,000

Reinsurance_Additional_Informa

Reinsurance - Additional Information (Detail) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014
Ceded Credit Risk [Line Items]	'
Percentage of share in results of pooled business subsidiary	80.00%
Percentage of share in results of pooled business owned by third party	20.00%
Excess of loss reinsured under an agreement	$1
Percentage of accumulation of losses	100.00%
Natural disasters, over a set retention	5
Natural disasters, aggregate annual deduction	1.5
Quota share reinsurance percentage	20.00%
Donegal Mutual [Member]	'
Ceded Credit Risk [Line Items]	'
Maximum amount of loss coverage under reinsurance agreement of property catastrophe	$149

Investments_Summary_of_Amortiz

Investments - Summary of Amortized Cost and Estimated Fair Value of Fixed Maturities and Equity Securities (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Nov. 30, 2013
Schedule of Equity Method Investments [Line Items]	'	'	'
Held to maturity, at amortized cost	$297,627,689	$240,370,277	'
Held to Maturity, Gross Unrealized Gains	11,282,000	515,000	'
Held to Maturity, Gross Unrealized Losses	158,000	2,095,000	'
Total held to maturity, Estimated Fair Value	308,752,000	238,790,000	212,228,289
Available for Sale, Amortized Cost	430,537,000	402,422,000	'
Available for Sale, Gross Unrealized Gains	22,363,000	13,943,000	'
Available for Sale, Gross Unrealized Losses	81,000	290,000	'
Available for Sale, Estimated Fair Value	452,819,000	416,075,000	'
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Held to maturity, at amortized cost	51,905,000	47,946,000	'
Held to Maturity, Gross Unrealized Gains	1,052,000	'	'
Held to Maturity, Gross Unrealized Losses	1,000	870,000	'
Total held to maturity, Estimated Fair Value	52,956,000	47,076,000	47,914,311
Available for Sale, Amortized Cost	16,097,000	14,272,000	'
Available for Sale, Gross Unrealized Gains	184,000	118,000	'
Available for Sale, Gross Unrealized Losses	13,000	57,000	'
Available for Sale, Estimated Fair Value	16,268,000	14,333,000	'
Obligations of States and Political Subdivisions [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Held to maturity, at amortized cost	94,992,000	108,435,000	'
Held to Maturity, Gross Unrealized Gains	7,744,000	465,000	'
Held to Maturity, Gross Unrealized Losses	'	446,000	'
Total held to maturity, Estimated Fair Value	102,736,000	108,454,000	79,866,801
Available for Sale, Amortized Cost	251,191,000	265,783,000	'
Available for Sale, Gross Unrealized Gains	18,001,000	11,779,000	'
Available for Sale, Gross Unrealized Losses	12,000	15,000	'
Available for Sale, Estimated Fair Value	269,180,000	277,547,000	'
Corporate Securities [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Held to maturity, at amortized cost	52,907,000	14,875,000	'
Held to Maturity, Gross Unrealized Gains	1,052,000	17,000	'
Held to Maturity, Gross Unrealized Losses	25,000	112,000	'
Total held to maturity, Estimated Fair Value	53,934,000	14,780,000	14,879,294
Available for Sale, Amortized Cost	60,134,000	39,940,000	'
Available for Sale, Gross Unrealized Gains	1,325,000	775,000	'
Available for Sale, Gross Unrealized Losses	2,000	43,000	'
Available for Sale, Estimated Fair Value	61,457,000	40,672,000	'
Mortgage-Backed Securities [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Held to maturity, at amortized cost	97,824,000	69,114,000	'
Held to Maturity, Gross Unrealized Gains	1,434,000	33,000	'
Held to Maturity, Gross Unrealized Losses	132,000	667,000	'
Total held to maturity, Estimated Fair Value	99,126,000	68,480,000	69,567,883
Available for Sale, Amortized Cost	77,207,000	70,259,000	'
Available for Sale, Gross Unrealized Gains	1,895,000	923,000	'
Available for Sale, Gross Unrealized Losses	28,000	82,000	'
Available for Sale, Estimated Fair Value	79,074,000	71,100,000	'
Fixed Maturities [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Available for Sale, Amortized Cost	404,629,000	390,254,000	'
Available for Sale, Gross Unrealized Gains	21,405,000	13,595,000	'
Available for Sale, Gross Unrealized Losses	55,000	197,000	'
Available for Sale, Estimated Fair Value	425,979,000	403,652,000	'
Equity Securities [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Available for Sale, Amortized Cost	25,908,000	12,168,000	'
Available for Sale, Gross Unrealized Gains	958,000	348,000	'
Available for Sale, Gross Unrealized Losses	26,000	93,000	'
Available for Sale, Estimated Fair Value	$26,840,000	$12,423,000	'

Investments_Additional_Informa

Investments - Additional Information (Detail) (USD $)

0 Months Ended

6 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

Nov. 30, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Obligations of States and Political Subdivisions [Member]

Obligations of States and Political Subdivisions [Member]

Special Revenue Bonds [Member]

Special Revenue Bonds [Member]

Education Bonds [Member]

Education Bonds [Member]

Water and Sewer Utility Bonds [Member]

Water and Sewer Utility Bonds [Member]

Equity Securities [Member]

Fixed Maturities [Member]

Accumulated Net Unrealized Investment Losses [Member]

Accumulated Net Unrealized Investment Losses [Member]

General Obligation Bonds [Member]

Securities

Securities

Schedule of Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate fair value of bond held

'

'

'

$277,600,000

$294,100,000

$94,300,000

$91,900,000

'

'

'

'

'

'

'

'

Amortized cost of bond held

'

'

'

259,400,000

284,900,000

86,800,000

89,300,000

'

'

'

'

'

'

'

'

Percentage of which the company held security of any issuer

'

10.00%

10.00%

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of investments in special revenue bonds

'

'

'

'

'

'

'

60.00%

56.00%

24.00%

23.00%

'

'

'

'

Net unrealized losses arising prior to reclassification date and classified in accumulated other comprehensive income

15,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of unrealized losses recorded in accumulated other comprehensive income

'

617,325

'

'

'

'

'

'

'

'

'

'

'

'

'

Net unrealized losses reclassified in accumulated other comprehensive income

'

'

'

'

'

'

'

'

'

'

'

'

'

$14,400,000

$15,000,000

Depreciation of original cost value

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Time period for which individual security should be in unrealized position of twenty percentage or more to assume it as other than temporary decline

'

'More than six months

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of fixed maturity securities classified as available for sale

'

'

'

'

'

'

'

'

'

'

'

6

30

'

'

Percentage of ownership interest

'

48.20%

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments_Summary_of_Reclass

Investments - Summary of Reclassifications of Fixed Maturities at Fair Value (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Nov. 30, 2013
Schedule of Equity Method Investments [Line Items]	'	'	'
Transfers from available for sale to held to maturity, Amortized Cost	'	'	$227,295,293
Transfers from available for sale to held to maturity, Estimated Fair Value	308,752,000	238,790,000	212,228,289
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Transfers from available for sale to held to maturity, Amortized Cost	'	'	50,627,225
Transfers from available for sale to held to maturity, Estimated Fair Value	52,956,000	47,076,000	47,914,311
Obligations of States and Political Subdivisions [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Transfers from available for sale to held to maturity, Amortized Cost	'	'	88,456,842
Transfers from available for sale to held to maturity, Estimated Fair Value	102,736,000	108,454,000	79,866,801
Corporate Securities [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Transfers from available for sale to held to maturity, Amortized Cost	'	'	15,745,976
Transfers from available for sale to held to maturity, Estimated Fair Value	53,934,000	14,780,000	14,879,294
Mortgage-Backed Securities [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Transfers from available for sale to held to maturity, Amortized Cost	'	'	72,465,250
Transfers from available for sale to held to maturity, Estimated Fair Value	$99,126,000	$68,480,000	$69,567,883

Investments_Summary_of_Amortiz1

Investments - Summary of Amortized Cost and Estimated Fair Value of Fixed Maturities by Contractual Maturity (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Nov. 30, 2013
Held to maturity	'	'	'
Due in one year or less, Amortized Cost	$3,640,000	'	'
Due after one year through five years, Amortized Cost	32,539,000	'	'
Due after five years through ten years, Amortized Cost	82,712,000	'	'
Due after ten years, Amortized Cost	80,913,000	'	'
Mortgage-backed securities, Amortized Cost	97,824,000	'	'
Total held to maturity, Amortized Cost	297,627,689	240,370,277	'
Due in one year or less, Estimated Fair Value	3,665,000	'	'
Due after one year through five years, Estimated Fair Value	32,902,000	'	'
Due after five years through ten years, Estimated Fair Value	84,777,000	'	'
Due after ten years, Estimated Fair Value	88,282,000	'	'
Mortgage-backed securities, Estimated Fair Value	99,126,000	'	'
Total held to maturity, Estimated Fair Value	308,752,000	238,790,000	212,228,289
Available for sale	'	'	'
Due in one year or less, Amortized Cost	12,000,000	'	'
Due after one year through five years, Amortized Cost	67,977,000	'	'
Due after five years through ten years, Amortized Cost	119,264,000	'	'
Due after ten years, Amortized Cost	128,181,000	'	'
Mortgage-backed securities, Amortized Cost	77,207,000	'	'
Total available for sale, Amortized Cost	404,629,000	'	'
Due in one year or less, Estimated Fair Value	12,084,000	'	'
Due after one year through five years, Estimated Fair Value	69,662,000	'	'
Due after five years through ten years, Estimated Fair Value	126,695,000	'	'
Due after ten years, Estimated Fair Value	138,464,000	'	'
Mortgage-backed securities, Estimated Fair Value	79,074,000	'	'
Total available for sale, Estimated Fair Value	$425,979,180	$403,651,965	'

Investments_Summary_of_Gross_R

Investments - Summary of Gross Realized Gains and Losses from Investments before Applicable Income Taxes (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Gain (Loss) on Investments [Line Items]	'	'	'	'
Gross realized gains	$2,034,000	$1,656,000	$2,000,000	$3,081,000
Gross realized losses	0	402,000	54,000	486,000
Net realized gains	2,034,172	1,253,982	1,945,640	2,594,546
Fixed Maturities [Member]	'	'	'	'
Gain (Loss) on Investments [Line Items]	'	'	'	'
Gross realized gains	1,325,000	1,389,000	1,348,000	2,340,000
Gross realized losses	0	10,000	1,000	24,000
Equity Securities [Member]	'	'	'	'
Gain (Loss) on Investments [Line Items]	'	'	'	'
Gross realized gains	709,000	267,000	652,000	741,000
Gross realized losses	$0	$392,000	$53,000	$462,000

Investments_Summary_of_Fixed_M

Investments - Summary of Fixed Maturities and Equity Securities with Unrealized Losses (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	$23,576	$207,175
Less Than 12 Months, Unrealized Losses	116	1,898
More Than 12 Months, Fair Value	14,919	43,913
More Than 12 Months, Unrealized Losses	123	488
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	2,663	50,803
Less Than 12 Months, Unrealized Losses	13	822
More Than 12 Months, Fair Value	264	4,642
More Than 12 Months, Unrealized Losses	1	104
Obligations of States and Political Subdivisions [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	'	65,171
Less Than 12 Months, Unrealized Losses	'	363
More Than 12 Months, Fair Value	1,572	13,405
More Than 12 Months, Unrealized Losses	12	99
Corporate Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	6,919	16,694
Less Than 12 Months, Unrealized Losses	27	84
More Than 12 Months, Fair Value	'	6,852
More Than 12 Months, Unrealized Losses	'	72
Mortgage-Backed Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	9,966	72,878
Less Than 12 Months, Unrealized Losses	50	536
More Than 12 Months, Fair Value	13,083	19,014
More Than 12 Months, Unrealized Losses	110	213
Equity Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Less Than 12 Months, Fair Value	4,028	1,629
Less Than 12 Months, Unrealized Losses	$26	$93

Investments_Summary_of_Financi

Investments - Summary of Financial Information (Detail) (Donegal Financial Services Corporation [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Donegal Financial Services Corporation [Member]	'	'	'	'	'
Balance sheets:	'	'	'	'	'
Total assets	$519,366	'	$519,366	'	$512,578
Total liabilities	439,906	'	439,906	'	438,649
Stockholders' equity	79,460	'	79,460	'	73,929
Total liabilities and stockholders' equity	519,366	'	519,366	'	512,578
Income statements:	'	'	'	'	'
Net income	$723	$1,401	$1,572	$3,659	'

Segment_Information_Summary_of

Segment Information - Summary of Financial Data by Segment (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Premiums earned	'	'	'	'
Net premiums earned	$136,589,156	$126,963,328	$270,137,417	$251,665,369
GAAP premiums earned	136,589,000	126,963,000	270,137,000	251,665,000
Net investment income	4,614,484	4,670,558	9,230,260	9,486,001
Realized investment gains	2,034,172	1,253,982	1,945,640	2,594,546
Equity in earnings of DFSC	348,625	675,568	757,867	1,764,474
Other	1,896,000	1,944,000	3,750,000	3,870,000
Total revenues	145,481,928	135,507,635	285,821,015	269,380,227
Underwriting loss:	'	'	'	'
SAP underwriting income (loss)	-8,952,000	-6,527,000	-18,134,000	-7,894,000
GAAP adjustments	3,475,000	2,591,000	6,400,000	4,340,000
GAAP underwriting loss	-5,477,000	-3,936,000	-11,734,000	-3,554,000
Net investment income	4,614,000	4,671,000	9,230,000	9,486,000
Realized investment gains	2,034,172	1,253,982	1,945,640	2,594,546
Equity in earnings of DFSC	348,625	675,568	757,867	1,764,474
Other	800,000	197,000	1,327,000	654,000
Income before income tax expense	2,319,912	2,862,158	1,526,696	10,945,447
Commercial lines [Member]	'	'	'	'
Premiums earned	'	'	'	'
Net premiums earned	56,696,000	49,612,000	111,042,000	97,243,000
Underwriting loss:	'	'	'	'
GAAP underwriting loss	-5,827,000	-3,079,000	-11,175,000	-4,670,000
Personal lines [Member]	'	'	'	'
Premiums earned	'	'	'	'
Net premiums earned	79,893,000	77,351,000	159,095,000	154,422,000
Underwriting loss:	'	'	'	'
GAAP underwriting loss	($3,125,000)	($3,448,000)	($6,959,000)	($3,224,000)

Borrowings_Additional_Informat

Borrowings - Additional Information (Detail) (USD $)	6 Months Ended				6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
		Atlantic States [Member]	Atlantic States [Member]	Maximum [Member]	Subordinated Debentures [Member]	Manufacturers and Traders Trust Company [Member]	West Bend Mutual Insurance Company [Member]	MICO [Member]	MICO [Member]	MICO [Member]
			Lines of Credit [Member]				Subordinated Debentures [Member]	Indianapolis [Member]	Indianapolis [Member]	Indianapolis [Member]
										Lines of Credit [Member]
Line of Credit Facility [Line Items]	'	'	'	'	'	'	'	'	'	'
Right to request for extension of credit agreement with Manufacturers and Traders Trust Company	'	'	'	'	'	$60,000,000	'	'	'	$2,301,231
Line of credit that expires date	'2017-07	'	'	'	'	'	'	'	'	'
Outstanding borrowings	45,000,000	'	'	'	'	'	'	'	'	'
Line of credit facility remaining borrowing capacity	15,000,000	'	'	'	'	'	'	'	'	'
Line of credit, interest rate related to LIBOR rate description	'Interest rates equal to M&T's current prime rate or the then current LIBOR rate plus 2.25%.	'	'	'	'	'	'	'	'	'
Debt instrument interest rate effective percentage	'	'	'	2.25%	'	'	'	'	'	'
Interest rate on borrowings	2.41%	'	'	'	'	'	'	'	'	'
Percentage commitment fee	0.20%	'	'	'	'	'	'	'	'	'
Revolving credit facility, borrowing interest rate	'The credit agreement requires our compliance with certain covenants. These covenants include minimum levels of our net worth, leverage ratio, statutory surplus and the A.M. Best ratings of our insurance subsidiaries. We were in compliance with all requirements of the credit agreement during the six months ended June 30, 2014.	'	'	'	'	'	'	'	'	'
Federal Home Loan Bank borrowing amount outstanding	'	'	'	'	'	'	'	0	0	'
Interest rate on advances	'	'	0.31%	'	'	'	'	'	'	'
Debt issued to FHLB in exchange of advance cash	'	15,000,000	'	'	'	'	'	'	'	'
Debt instrument basis spread on variable rate	'	'	'	'	5.00%	'	'	'	'	'
Purchase of surplus note	'	'	'	'	'	'	$5,000,000	'	'	'

Borrowings_Amount_of_FHLB_of_I

Borrowings - Amount of FHLB of Indianapolis/Pittsburgh Stock Purchased, Collateral Pledged and Assets Related to MICO's/Atlantic States Agreement (Detail) (Lines of Credit [Member], USD $)	Jun. 30, 2014
MICO [Member] | Indianapolis [Member]	'
Amount of FHLB of Indianapolis/Pittsburgh stock purchased, collateral pledged and assets related to MICO's/Atlantic States Agreement	'
FHLB stock purchased and owned as part of the agreement	$252,100
Collateral pledged, at par	3,700,000
Borrowing capacity currently available	2,301,231
Atlantic States [Member] | Pittsburgh [Member]	'
Amount of FHLB of Indianapolis/Pittsburgh stock purchased, collateral pledged and assets related to MICO's/Atlantic States Agreement	'
FHLB stock purchased and owned as part of the agreement	941,700
Collateral pledged, at par	20,500,000
Borrowing capacity currently available	$305,523

Borrowings_Amount_of_FHLB_of_I1

Borrowings - Amount of FHLB of Indianapolis/Pittsburgh Stock Purchased, Collateral Pledged and Assets Related to MICO's/Atlantic States Agreement (Parenthetical) (Detail) (Lines of Credit [Member], USD $)	Jun. 30, 2014
Indianapolis [Member] | MICO [Member]	'
Line of Credit Facility [Line Items]	'
Collateral pledged, at par, carrying value	$2,673,959
Pittsburgh [Member] | Atlantic States [Member]	'
Line of Credit Facility [Line Items]	'
Collateral pledged, at par, carrying value	$17,089,256

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'	'
Compensation expense in stock compensation plans	$497,614	$155,523	$1,000,000	$327,828
Income tax benefit of stock compensation plans	174,165	54,433	363,484	114,740
Unrecognized compensation expense related to nonvested share-based compensation	3,600,000	'	3,600,000	'
Weighted average period of unrecognized compensation cost	'	'	'1 year 10 months 24 days	'
Cash from option exercises	1,200,000	1,900,000	1,400,000	3,600,000
Tax benefit for tax deductions from option exercises	$52,159	$87,952	$63,674	$186,881

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value Measurements for Investments in Available-for-Sale Fixed Maturity and Equity Securities (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	$452,819	$416,075
U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	16,268	14,333
Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	269,180	277,547
Corporate Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	61,457	40,672
Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	79,074	71,100
Equity Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	26,840	12,423
Assets and Liabilities on Recurring Basis [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	452,819	416,075
Assets and Liabilities on Recurring Basis [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	16,268	14,333
Assets and Liabilities on Recurring Basis [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	269,180	277,547
Assets and Liabilities on Recurring Basis [Member] | Corporate Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	61,457	40,672
Assets and Liabilities on Recurring Basis [Member] | Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	79,074	71,100
Assets and Liabilities on Recurring Basis [Member] | Equity Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	26,840	12,423
Assets and Liabilities on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	17,539	6,468
Assets and Liabilities on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Equity Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	17,539	6,468
Assets and Liabilities on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	435,280	409,607
Assets and Liabilities on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	16,268	14,333
Assets and Liabilities on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Obligations of States and Political Subdivisions [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	269,180	277,547
Assets and Liabilities on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	61,457	40,672
Assets and Liabilities on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	79,074	71,100
Assets and Liabilities on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Equity Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale Securities, Fair Value Disclosure	$9,301	$5,955

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional information (Detail) (USD $)	Jun. 30, 2014
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'
Transfer of investments between Levels 1 and 2	$0

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
			Le Mars [Member]
Operating Loss Carryforwards [Line Items]	'	'	'
Unrecognized tax benefits	$0	$0	'
Valuation allowance related to the portion of operating loss carryforwards	'	'	440,778
Deferred tax assets, net	40,200,000	39,600,000	'
Operating loss carryforward	'	'	4,700,000
Operating loss carryforward expiration period	'	'	'2020
Operating loss carryforward annual limitations in amount on use	'	'	376,000
Alternative minimum tax credit carryforward	$10,000,000	'	'