Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	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			870				870
401(k) plan		7					7
401(k) plan (in Shares)		2,175
2007 Long Term Incentive Plan - restricted stock (in Shares)		382,062
2007 Long Term Incentive Plan - option exercises		47					47
2007 Long Term Incentive Plan - option exercises (in Shares)		15,000
Share-based compensation		136					136
Balance at Mar. 31, 2013	$ 15,321	$ 480,963	$ (268,418)	$ (22,398)	$ (40,303)	$ (20,170)	$ 144,995
Balance (in Shares) at Mar. 31, 2013	7,331,574	56,902,996		(1,578,554)	(4,739,462)