CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income	$ 5,035us-gaap_NetIncomeLoss	$ 83,332us-gaap_NetIncomeLoss	$ 20,546us-gaap_NetIncomeLoss
Other comprehensive (loss) income, net of applicable taxes:
Foreign currency translation adjustment	(3,585)	684	535
Unrealized gain on short-term investments	53us-gaap_UnrealizedGainLossOnInvestments	0us-gaap_UnrealizedGainLossOnInvestments	2us-gaap_UnrealizedGainLossOnInvestments
Total other comprehensive (loss) income	(3,532)	684	537
Comprehensive income	$ 1,503us-gaap_ComprehensiveIncomeNetOfTax	$ 84,016us-gaap_ComprehensiveIncomeNetOfTax	$ 21,083us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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