Balance Sheet Details - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Other Assets [Abstract]
Convertible notes receivable	$ 5,000	$ 5,000
Deferred income taxes	12,785	12,810
Other	516	506
Total other assets	$ 18,301	$ 18,316

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant