CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 27,590	$ 21,434	$ 4,831
Other comprehensive income (loss):
Change in unrealized gain, derivatives, net of taxes			1,009
Write-off of cumulative translation adjustments, net of tax			4,676
Translation adjustments	2,293	(2,870)	1,777
Total other comprehensive income (loss)	2,293	(2,870)	7,462
Comprehensive income	$ 29,883	$ 18,564	$ 12,293