Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	401(k) Plan [Member] Common Class B [Member] USD ($)	401(k) Plan [Member] USD ($)	Restricted Stock [Member] Common Class A [Member] 2007 Incentive Plan [Member]	Restricted Stock [Member] Common Class B [Member] 2007 Incentive Plan [Member]	Restricted Stock [Member] Class B Treasury Stock [Member] 2007 Incentive Plan [Member] USD ($)	Restricted Stock [Member] 2007 Incentive Plan [Member] USD ($)	Common Class A [Member] USD ($)	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 ($)	Total USD ($)
Balance at December 31, 2013 at Dec. 31, 2013							$ 15,321	$ 483,055	$ (251,000)	$ (22,398)	$ (40,559)	$ (10,409)	$ 174,010
Balance at December 31, 2013 (in Shares) at Dec. 31, 2013							7,331,574	57,010,878		(1,578,554)	(4,768,925)
Net income									1,277				1,277
Issuance of common stock:
Common shares issued, value	6	6			(291)	(291)
Common shares issued (in Shares)	492		236,294	312,961	(22,556)
Share-based compensation							613	1,458					2,071
Balance at March 31, 2014 at Mar. 31, 2014							$ 15,934	$ 484,519	$ (249,723)	$ (22,398)	$ (40,850)	$ (10,409)	$ 177,073
Balance at March 31, 2014 (in Shares) at Mar. 31, 2014							7,567,868	57,324,331		(1,578,554)	(4,791,481)