Consolidated Statement of Equity (Parenthetical) (Warrant, USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]
Issuance of common stock	17,250,000	8,625,000	11,700,000
Common stock, shares repurchased		3,400	51,958
Number of warrants repurchased	427,332	612,900	3,371,804
Common stock issued under 2009 Equity Participation Plan, forfeited shares	146,638
Stock Issued During Period, Shares, Share-based Compensation, Gross	136,600
Common stock issued under 2009 Equity Participation Plan net of shares forfeited			(3,000)
Other comprehensive income (loss), net of tax:
Foreign currency translation loss, tax	$ 5,300	$ 1,300	$ 900
Unrealized forward contract forward currency gain (loss)	2,100	3,700	1,500
Unrealized holding gain (loss) on marketable securities, tax		$ 2,300	$ 2,100