Condensed Consolidated Statement of Shareholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Stockholders' Equity at Mar. 31, 2011	$ 101,731	$ 304	$ 106,629	$ 30,071	$ (35,273)
Treasury Stock, Shares at Mar. 31, 2011	9,668,977				9,668,977
Common Stock, Shares, Issued at Mar. 31, 2011	30,397,789	30,397,789
Increase (Decrease) in Stockholders' Equity
Net loss	(2,911)			(2,911)
Excess tax deficiency	(14)		(14)
Issuance of common stock upon exercise of warrants and stock options, number of shares		40,550
Issuance of common stock upon exercise of warrants and stock options, share value	85	0	85
Share-based compensation from options grants	346		346
Stockholders' Equity at Dec. 31, 2011	$ 99,237	$ 304	$ 107,046	$ 27,160	$ (35,273)
Treasury Stock, Shares at Dec. 31, 2011	9,668,977				9,668,977
Common Stock, Shares, Issued at Dec. 31, 2011	30,438,339	30,438,339