Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (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
Balance at Dec. 31, 2012	$ 15,321	$ 480,773	$ (269,288)	$ (22,398)	$ (40,303)	$ (20,170)	$ 143,935
Balance (in Shares) at Dec. 31, 2012	7,331,574	56,503,759		(1,578,554)	(4,739,462)
Net income			6,014				6,014
Issuance of common stock:
401(k) plan		14					14
401(k) plan (in Shares)		3,535
2007 Long Term Incentive Plan - restricted stock (in Shares)		382,062
2007 Long Term Incentive Plan - option exercises		101					101
2007 Long Term Incentive Plan - option exercises (in Shares)		30,000
Share-based compensation		1,464					1,464
Balance at Jun. 30, 2013	$ 15,321	$ 482,352	$ (263,274)	$ (22,398)	$ (40,303)	$ (20,170)	$ 151,528
Balance (in Shares) at Jun. 30, 2013	7,331,574	56,919,356		(1,578,554)	(4,739,462)