CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE LOSS (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2008	$ 20	$ (118)	$ 381,523	$ 36	$ (359,182)	$ 22,279
Balance (in shares) at Dec. 31, 2008	19,834,292
Comprehensive loss:
Net loss					(11,531)	(11,531)
Currency translation adjustment				515	0	515
Total comprehensive loss						(11,016)
Stock compensation	0	0	1,305	0	0	1,305
Stock compensation (in shares)	97,895
Shares of common stock issued under stock benefit plans	0	0	108	0	0	108
Shares of common stock issued under stock benefit plans (in shares)	80,586
Payout of fractional shares as a result of reverse stock split	0	0	(1)	0	0	(1)
Payout of fractional shares as a result of reverse stock split (in shares)	(252)
Balance at Dec. 31, 2009	20	(118)	382,935	551	(370,713)	12,675
Balance (in shares) at Dec. 31, 2009	20,012,521
Comprehensive loss:
Net loss					(4,609)	(4,609)
Currency translation adjustment				(92)	0	(92)
Total comprehensive loss						(4,701)
Stock compensation	0	0	2,358	0	0	2,358
Stock compensation (in shares)	48,800
Shares of common stock issued under stock benefit plans	1	0	82	0	0	83
Shares of common stock issued under stock benefit plans (in shares)	449,257
Sales of stock, net of issuance costs	3	0	6,314	0	0	6,317
Sales of stock, net of issuance costs (in shares)	3,017,236
Balance at Dec. 31, 2010	24	(118)	391,689	459	(375,322)	16,732
Balance (in shares) at Dec. 31, 2010	23,527,814
Comprehensive loss:
Net loss					(22,872)	(22,872)
Currency translation adjustment				(523)	0	(523)
Total comprehensive loss						(23,395)
Stock compensation	0	0	2,474	0	0	2,474
Stock compensation (in shares)	0
Shares of common stock issued under stock benefit plans	1	0	321	0	0	322
Shares of common stock issued under stock benefit plans (in shares)	895,488
Sales of stock, net of issuance costs	6	0	16,067	0	0	16,073
Sales of stock, net of issuance costs (in shares)	6,210,000
Balance at Dec. 31, 2011	$ 31	$ (118)	$ 410,551	$ (64)	$ (398,194)	$ 12,206
Balance (in shares) at Dec. 31, 2011	30,633,302