Quarterly report pursuant to Section 13 or 15(d)

Revenue - Schedule of Contract Assets and Liabilities (Details)

v3.10.0.1
Revenue - Schedule of Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2018
Jan. 02, 2018
Dec. 31, 2017
Account receivables, net of allowance $ 6,075 $ 7,940  
Unbilled receivables - current 3,018 4,574  
Unbilled receivables - non-current 129 184  
Deferred revenue 4,472 $ 5,083 $ 4,311
Year-to-date Change [Member]      
Account receivables, net of allowance (1,865)    
Unbilled receivables - current (1,529)    
Unbilled receivables - non-current (55)    
Deferred revenue $ (611)    
Changes in Account receivables, net of allowance, percentage (23.50%)    
Changes in Unbilled receivables - current, percentage (33.60%)    
Changes in Unbilled receivables - non-current, percentage (29.90%)    
Changes in Deferred revenue, percentage (12.00%)