Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2016
Changes in accumulated other comprehensive income (loss) by component
Balance		$ 290,105
Balance	$ 234,709	234,709
Unrealized Gain (Loss) on Marketable Securities
Changes in accumulated other comprehensive income (loss) by component
Balance	91	(289)
Other comprehensive income before reclassifications	36	416
Net current-period other comprehensive income	36	416
Balance	127	127
Foreign Currency Items
Changes in accumulated other comprehensive income (loss) by component
Balance	2,596	2,596
Balance	2,596	2,596
Accumulated Other Comprehensive Income
Changes in accumulated other comprehensive income (loss) by component
Balance	2,687	2,307
Other comprehensive income before reclassifications	36	416
Amounts reclassified from other comprehensive income	0	0
Net current-period other comprehensive income	36	416
Balance	$ 2,723	$ 2,723

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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