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	95,844,000				95,844,012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	0	0	10,842	0	10,842
Exercise of stock options	280	0	0	0	280
Exercise of stock options (in shares)	175,000
Employee stock purchase plan issuances	588	0	0	0	588
Employee stock purchase plan issuances (in shares)	61,000
Amortization of deferred compensation related to restricted stock awards	64	0	0	0	64
Amortization of deferred compensation related to restricted stock awards (in shares)	0
Stock-based compensation expense	1,639	0	0	0	1,639
Foreign currency translation adjustment	0	0	0	358	358
Excess tax benefit - stock compensation	238	0	0	0	238
BALANCES at Mar. 31, 2013	$ 228,844	$ 17,946	$ 26,154	$ (5,546)	$ 215,090
BALANCES (in shares) at Mar. 31, 2013	96,080,000				96,079,885