Summary of Significant Accounting Policies (Cash and Cash Equivalents, Inventories, Intangibles and Other Long-Lived Assets, and Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Cash and cash equivalents
Cash held in foreign bank accounts	$ 400		$ 800
Restricted cash	500		$ 500
Cost of revenue	9,261	$ 10,813
Improper Classification of Cost of Revenue
Cash and cash equivalents
Cost of revenue	$ 1,000	$ 500

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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-Publisher FASB
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-Topic 944
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Name:	us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant