Consolidated Statement of Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Capital in Excess of Par Value	Accumulated Deficit	Accumulated Other Comprehensive Loss	Class A Treasury Stock	Class A Common Stock Common Stock	Class B Common Stock Common Stock
Balance at Dec. 31, 2014	$ 68,685	$ 345,021	$ (276,109)	$ (24)	$ (775)	$ 322	$ 250
Balance, shares at Dec. 31, 2014					(59)	32,261	24,985
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,585)		(2,585)
Other comprehensive income	21			21
Issuance of shares of stock in conjunction with stock option exercises, shares						14
Issuance of shares of stock in conjunction with stock option exercises	61	61				0
Issuance of shares of stock and restricted stock, net of cancellations and tax withholdings, shares						61
Issuance of shares of stock and restricted stock, net of cancellations and tax withholdings	(107)	(108)				1
Non-cash equity compensation	575	575
Balance at Mar. 31, 2015	$ 66,650	$ 345,549	$ (278,694)	$ (3)	$ (775)	$ 323	$ 250
Balance, shares at Mar. 31, 2015					(59)	32,336	24,985