CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2009	$ 278	$ 314,463	$ (2,012)	$ 33,486	$ (73,244)	$ 272,971
Balance (in shares) at Dec. 31, 2009	27,852,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B Common Stock to Class A Common Stock (in shares)	1,000
Conversion of Class B Common Stock to Class A Common Stock	0	0	0	0	0	0
Unrealized gains on available for sale securities	0	0	500	0	0	500
Reclassification of net losses on swap derivatives to earnings, net of tax expense						0
Other-than-temporary loss on investments, net of tax benefit of $765 in 2010	0	0	1,247	0	0	1,247
Reclassification of unrealized gains on sales of investments						0
Issuance of shares for employee stock options (in shares)	4,000
Issuance of shares for employee stock options	0	31	0	0	0	31
Unrealized gains on derivative, net of tax expense	0	0	170	0	0	170
Compensation expense related to employee and Director SAR/Options	0	659	0	0	0	659
Purchases of Treasury stock	0	0	0	0	(2,803)	(2,803)
Net (loss)/income	0	0	0	16,484	0	16,484
Balance at Dec. 31, 2010	278	315,153	(95)	49,970	(76,047)	289,259
Balance (in shares) at Dec. 31, 2010	27,857,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B Common Stock to Class A Common Stock (in shares)	9,000
Conversion of Class B Common Stock to Class A Common Stock	1	(1)	0	0	0	0
Unrealized gains on available for sale securities	0	0	182	0	0	182
Excess tax benefits on options exercised	0	60	0	0	0	60
Reclassification of net losses on swap derivatives to earnings, net of tax expense	0	0	571	0	0	571
Other-than-temporary loss on investments, net of tax benefit of $765 in 2010						0
Reclassification of unrealized gains on sales of investments	0	0	(502)	0	0	(502)
Issuance of shares for employee stock options (in shares)	35,000
Issuance of shares for employee stock options	0	283	0	0	0	283
Unrealized gains on derivative, net of tax expense						0
Compensation expense related to employee and Director SAR/Options	0	1,199	0	0	0	1,199
Purchases of Treasury stock	0	0	0	0	(798)	(798)
Dividends paid	0	0	0	(6,894)	0	(6,894)
Net (loss)/income	0	0	0	24,360	0	24,360
Balance at Dec. 31, 2011	279	316,694	156	67,436	(76,845)	307,720
Balance (in shares) at Dec. 31, 2011	27,901,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B Common Stock to Class A Common Stock (in shares)	1,000
Conversion of Class B Common Stock to Class A Common Stock	0	0	0	0	0	0
Unrealized gains on available for sale securities	0	0	25	0	0	25
Reclassification of net losses on swap derivatives to earnings, net of tax expense						0
Other-than-temporary loss on investments, net of tax benefit of $765 in 2010						0
Reclassification of unrealized gains on sales of investments	0	0	(162)	0	0	(162)
Unrealized gains on derivative, net of tax expense						0
Compensation expense related to employee and Director SAR/Options	0	779	0	0	0	779
Dividends paid	0	0	0	(4,594)	0	(4,594)
Net (loss)/income	0	0	0	(26,125)	0	(26,125)
Balance at Dec. 31, 2012	$ 279	$ 317,473	$ 19	$ 36,717	$ (76,845)	$ 277,643
Balance (in shares) at Dec. 31, 2012	27,902,000