Valuation Allowances on Deferred Tax Assets and Tax Legislation Developments Schedule of Deferred Tax Assets from Net Operating Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Components of Deferred Tax Assets [Abstract]
Domestic net operating loss carryforward	$ 110,167	$ 102,827
Foreign net operating loss carryforward	$ 5,826	$ 8,007

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant