Annual report pursuant to Section 13 and 15(d)

Revenue from contracts with customers (Details textual)

v3.19.1
Revenue from contracts with customers (Details textual) - USD ($)
$ in Thousands
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Retained Earnings (Accumulated Deficit) $ (28,722)   $ (31,979)
Adoption Of ASC 606 [Member]      
Retained Earnings (Accumulated Deficit)   $ 17,000