Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details Textual)

v3.8.0.1
Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Recognition Of Deferred Revenue ,Remainder Of Fiscal year $ 712  
Recognition Of Deferred Revenue, Next Twelve Months 543  
Recognition Of Deferred Revenue, in Two Years 754  
Deferred Revenue 2,058 $ 1,919
Accounts Receivable, Net, Current $ 3,574 $ 2,760