CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Treasury Stock	Comprehensive Income
Balance at Dec. 31, 2011	$ 45,471	$ 121	$ 911,987	$ (858,105)	$ (8,532)
Balance (in shares) at Dec. 31, 2011		12,169			1,123
Comprehensive income:
Net income for the three months ended March 31, 2012	14,149			14,149		14,149
Comprehensive income	14,149					14,149
Non-cash compensation	1,312		1,312
Issuance of common stock upon exercise of stock options and vesting of restricted stock units, net of withholding taxes	(827)	3	(830)
Issuance of common stock upon exercise of stock options and vesting of restricted stock units, net of withholding taxes (in shares)		229
Balance at Mar. 31, 2012	$ 60,105	$ 124	$ 912,469	$ (843,956)	$ (8,532)
Balance (in shares) at Mar. 31, 2012		12,398			1,123