Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

v3.8.0.1
Commitments and Contingencies (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
item
Dec. 31, 2017
USD ($)
Number of previous claims experienced | item 0  
Future minimum unconditional purchase obligations    
Sales and use tax receivable $ 3,332 $ 2,704
Prepaid expense and other current assets    
Future minimum unconditional purchase obligations    
Sales and use tax receivable 3,332  
Net sales and use tax liability 5,730  
Accounts Payable and Accrued Liabilities    
Future minimum unconditional purchase obligations    
Sales and use tax liability $ 9,062