Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Common Class A [Member]	Common Class B [Member]	Retained Earnings [Member]	Class A Treasury Stock [Member]	Class B Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning balance at Dec. 31, 2009	$ 15,321	$ 453,824	$ (303,698)	$ (22,398)	$ (40,115)	$ (9,314)	$ 93,620
Beginning balance (in Shares) at Dec. 31, 2009	7,331,574	47,529,502		(1,578,554)	(4,654,750)
Net income			23,163				23,163
Gain on derivatives, net of income tax						3,870	3,870
Adjustment to pension liability, net of income tax						(2,544)	(2,544)
Preferred stock dividends (including accretion of original issuance costs)			(14,582)				(14,582)
Issuance of common stock:
Exchange of preferred stock		25,518					25,518
Exchange of preferred stock (in Shares)		8,500,000
401(k) plan (in Shares)		13,815
401(k) plan		30					30
Share-based compensation		332					332
Ending balance at Dec. 31, 2010	15,321	479,704	(295,117)	(22,398)	(40,115)	(7,988)	129,407
Ending balance (in Shares) at Dec. 31, 2010	7,331,574	56,043,317		(1,578,554)	(4,654,750)
Net income			9,035				9,035
Adjustment to pension liability, net of income tax						(8,414)	(8,414)
Preferred stock dividends (including accretion of original issuance costs)			(7,240)				(7,240)
Issuance of common stock:
401(k) plan (in Shares)		13,753
401(k) plan		29					29
Share-based compensation		136					136
Ending balance at Dec. 31, 2011	15,321	479,869	(293,322)	(22,398)	(40,115)	(16,402)	122,953
Ending balance (in Shares) at Dec. 31, 2011	7,331,574	56,057,070		(1,578,554)	(4,654,750)
Net income			28,129				28,129
Adjustment to pension liability, net of income tax						(3,768)	(3,768)
Preferred stock dividends (including accretion of original issuance costs)			(4,095)				(4,095)
Issuance of common stock:
401(k) plan (in Shares)		14,293
401(k) plan		26					26
2007 Long Term Incentive Plan					(188)		(188)
2007 Long Term Incentive Plan (in Shares)		432,396			(84,712)
Share-based compensation		878					878
Ending balance at Dec. 31, 2012	$ 15,321	$ 480,773	$ (269,288)	$ (22,398)	$ (40,303)	$ (20,170)	$ 143,935
Ending balance (in Shares) at Dec. 31, 2012	7,331,574	56,503,759		(1,578,554)	(4,739,462)