CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Warrants to acquire Common Stock [Member]	Accumulated Deficit [Member]	Other Comprehensive Loss [Member]	Total
BALANCES at Dec. 31, 2012	$ 226,035	$ 17,946	$ (36,996)	$ (5,904)	$ 201,081
BALANCES (in shares) at Dec. 31, 2012	95,844,012				95,844,012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	0	0	23,479	0	23,479
Exercise of stock options	676	0	0	0	676
Exercise of stock options (in shares)	270,000
Employee stock purchase plan issuances	588	0	0	0	588
Employee stock purchase plan issuances (in shares)	61,000
Compensation and share issuances related to restricted stock awards	414	0	0	0	414
Compensation and share issuances related to restricted stock awards (in shares)	16,000
Stock-based compensation expense	3,830	0	0	0	3,830
Foreign currency translation adjustment	0	0	0	(4,621)	(4,621)
Excess tax benefit - stock compensation	745	0	0	0	745
BALANCES at Jun. 30, 2013	$ 232,288	$ 17,946	$ (13,517)	$ (10,525)	$ 226,192
BALANCES (in shares) at Jun. 30, 2013	96,191,057				96,191,057