Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_AccountsReceivableNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Revenue Recognition (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue from Contract with Customer [Line Items]
Product warranty term	1 year
Unbilled revenue, billed and collected, term	1 year
Accounts receivable, net	$ 3,737		$ 3,966
Revenue recognized related to contract liabilities	$ 30	$ 38
Minimum [Member]
Revenue from Contract with Customer [Line Items]
Payment term	30 days
Maximum [Member]
Revenue from Contract with Customer [Line Items]
Payment term	60 days