Quarterly report pursuant to Section 13 or 15(d)

Revenue Contract Acquisition Costs (Details)

v3.10.0.1
Revenue Contract Acquisition Costs (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Capitalized Contract Cost [Line Items]          
Capitalized contract cost, amortization $ 212 $ 479 $ 943 $ 1,300  
Deferred Commissions          
Capitalized Contract Cost [Line Items]          
Capitalized contract costs, current 366   366   $ 308
Capitalized contract costs, noncurrent $ 36   $ 36   $ 47