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Commitments and Contingencies Narrative (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
Long-term Purchase Commitment [Line Items]  
2018 contractual obligation $ 1,304
2019 contractual obligation $ 956
Purchase commitment, period 5 years
Initial build of production suite costs | Minimum  
Long-term Purchase Commitment [Line Items]  
Other commitment $ 300
Annual production suite fees | Minimum  
Long-term Purchase Commitment [Line Items]  
Other commitment 3,000
Annual production suite fees | Maximum  
Long-term Purchase Commitment [Line Items]  
Other commitment $ 4,000