CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (1,616)	$ 43,063	$ 43,717
Other comprehensive income (loss):
Foreign currency translation adjustments	298	65	1,855
Changes in fair value of cash flow hedges:
Unrealized gain (loss) arising during the period	37	9	(28)
Total other comprehensive income	335	74	1,827
Net comprehensive (loss) income	$ (1,281)	$ 43,137	$ 45,544

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 portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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