Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Comprehensive Income (loss)
Balance at Dec. 31, 2010	$ 37,731	$ 28	$ 291,342	$ 2	$ (253,641)	$ 0
Balance, shares at Dec. 31, 2010		28,041,379
Issuance of common stock from exercised stock options/restricted stock units, shares		62,062
Employee and non-employee stock-based compensation	2,929		2,929
Comprehensive loss:
Net loss	(1,205)				(1,205)	(1,205)
Net unrealized gain on marketable securities	83			83		83
Comprehensive loss	(1,122)					(1,122)
Balance at Jun. 30, 2011	$ 39,538	$ 28	$ 294,271	$ 85	$ (254,846)	$ 0
Balance, shares at Jun. 30, 2011		28,103,441