Concentration of Credit Risk (Detail Textuals) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Customer	Dec. 31, 2015 USD ($) Customer
Concentration Risk [Line Items]
Allowance for doubtful accounts | $	$ 87	$ 183
Sales revenue | Customer concentration risk
Concentration Risk [Line Items]
Number of customers	1	2
Sales revenue | Customer concentration risk | Customer one concentration risk
Concentration Risk [Line Items]
Concentration risk percentage	15.10%	14.20%
Sales revenue | Customer concentration risk | Customer two concentration risk
Concentration Risk [Line Items]
Concentration risk percentage		11.80%
Accounts receivable | Customer concentration risk
Concentration Risk [Line Items]
Number of customers	3	2
Accounts receivable | Customer concentration risk | Customer one concentration risk
Concentration Risk [Line Items]
Concentration risk percentage	24.20%	19.40%
Accounts receivable | Customer concentration risk | Customer two concentration risk
Concentration Risk [Line Items]
Concentration risk percentage	15.10%	13.30%
Accounts receivable | Customer concentration risk | Customer three concentration risk
Concentration Risk [Line Items]
Concentration risk percentage	13.70%