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Geographic and Segment Information (Details Narrative) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($) ReportableSegments	Dec. 31, 2017 USD ($)
Number of reportable operating segment	3	3
Assets, Noncurrent	$ 24,848	$ 25,778	$ 42,400
Concentration risk percentage		10.00%
U [S]
Assets, Noncurrent	$ 24,400	$ 25,800	$ 24,400
Percentage of assets (as a percent)	100.00%	100.00%	58.00%

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Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.

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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.

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