Company Operations by Product, Customer and Geographic Area (Details Textual) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)
Segment Reporting [Abstract]
Number of segments \| segment	1
Concentration Risk [Line Items]
Accounts receivable	$ 11,330	$ 14,785
Accounts Receivable \| Customer Concentration Risk \| Customer One
Concentration Risk [Line Items]
Concentration risk, percentage	32.00%
Accounts receivable	$ 3,571
Accounts Receivable \| Customer Concentration Risk \| Customer Two
Concentration Risk [Line Items]
Concentration risk, percentage	24.00%
Accounts receivable	$ 2,755
Accounts Receivable \| Customer Concentration Risk \| Customer Three
Concentration Risk [Line Items]
Concentration risk, percentage	24.00%
Accounts receivable	$ 2,789
Accounts Receivable \| Customer Concentration Risk \| Customer Four
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%
Accounts receivable	$ 1,174

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: 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(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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