Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Restricted Stock [Member] Common Class B [Member] 2007 Incentive Plan [Member]	Restricted Stock [Member] Class B Treasury Stock [Member] 2007 Incentive Plan [Member] USD ($)	Restricted Stock [Member] 2007 Incentive Plan [Member] USD ($)	Restricted Stock [Member] USD ($)	Employee Stock Option [Member] Common Class B [Member] 2007 Incentive Plan [Member] USD ($)	Employee Stock Option [Member] 2007 Incentive Plan [Member] USD ($)	Common Class A [Member] USD ($)	Common Class B [Member] 401(k) Plan [Member] USD ($)	Common Class B [Member] USD ($)	Retained Earnings [Member] USD ($)	Class A Treasury Stock [Member] USD ($)	Class B Treasury Stock [Member] USD ($)	Accumulated Other Comprehensive Income (Loss) [Member] USD ($)	401(k) Plan [Member] USD ($)	Total USD ($)
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:
Common shares issued (in Shares)									13,753
Common shares issued, value									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:
Common shares issued (in Shares)	432,396	(84,712)						14,293
Common shares issued, value		(188)	(188)					26						26
Share-based compensation				400					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)
Net income										18,288					18,288
Adjustment to pension liability, net of income tax													9,761		9,761
Issuance of common stock:
Common shares issued (in Shares)	382,062	(29,463)			119,822			5,235
Common shares issued, value		(256)	(256)		280	280		28						28
Share-based compensation									1,974						1,974
Ending balance at Dec. 31, 2013							$ 15,321		$ 483,055	$ (251,000)	$ (22,398)	$ (40,559)	$ (10,409)		$ 174,010
Ending balance (in Shares) at Dec. 31, 2013							7,331,574		57,010,878		(1,578,554)	(4,768,925)