Consolidated Statement Of Shareholders' Equity (USD $) In Thousands	Class A Common Stock [Member]	Class B Common Stock [Member]	Capital In Excess Of Par Value [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Class A Treasury Stock [Member]	Total
Balance at Dec. 31, 2011	$ 409	$ 260	$ 336,661	$ (188,442)	$ (166)	$ (775)	$ 147,947
Balance, shares at Dec. 31, 2011	40,894	25,985				(59)
Net loss				(3,613)			(3,613)
Other comprehensive loss					(23)		(23)
Issuance of shares of stock in conjunction with stock option exercises			73				73
Issuance of shares of stock in conjunction with stock option exercises, shares	38
Issuance of shares of stock and restricted stock, net of cancellations and tax withholdings	1		(134)				(133)
Issuance of shares of stock and restricted stock, net of cancellations and tax withholdings, shares	49
Common stock dividends				(2)			(2)
Non-cash equity compensation			1,323				1,323
Balance at Mar. 31, 2012	$ 410	$ 260	$ 337,923	$ (192,057)	$ (189)	$ (775)	$ 145,572
Balance, shares at Mar. 31, 2012	40,981	25,985				(59)