Other Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Other Assets, Noncurrent Disclosure [Abstract]
Demonstration assets, net	$ 2,108		$ 1,824
Deferred tax assets, net	72		72
Other	2,538		1,852
Other assets	$ 4,718		$ 3,748
Useful life of demonstration assets	2 years
Amortization of demonstration assets	$ 500	$ 500

Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant