Industry, Geographic and Revenue Disaggregation - Long-lived Assets and Total Net Revenue by Geographic Territory (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	$ 7,303	$ 4,890
Geographic Concentration \| Long-lived assets
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	7,303	4,890
Geographic Concentration \| Domestic \| Long-lived assets
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	6,309	3,779
Geographic Concentration \| Foreign \| Long-lived assets
Geographic Areas, Long-Lived Assets [Abstract]
Long-lived assets	$ 994	$ 1,111

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(14))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(8))
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Reference 4: 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
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