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Segment Reporting and Concentrations (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Operating Lease, Right-of-Use Asset	$ 7,784		$ 0
Foreign Customer [Member] | Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	52.00%	58.00%
Foreign Customer [Member] | Accounts Receivable [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	62.00%		57.00%
Two clients [Member] | Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	26.00%	32.00%
Three Clients [Member] | Accounts Receivable [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	43.00%		48.00%
Client [Member] | Accounts Receivable [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	10.00%	10.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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