Operating Segments - Geographic Segments (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | $ 42,745 | $ 41,208 | $ 42,618 | $ 40,235 | $ 40,096 | $ 38,105 | $ 26,296 | $ 18,795 | $ 166,806 | $ 123,292 | $ 72,140 |
| Long-Lived Assets | 75,377 | 70,767 | 75,377 | 70,767 | 44,114 | ||||||
| United States | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | 138,510 | 110,392 | 72,140 | ||||||||
| Long-Lived Assets | 70,208 | 63,858 | 70,208 | 63,858 | 44,045 | ||||||
| Other | |||||||||||
| Segment Reporting Information [Line Items] | |||||||||||
| Revenues | 28,296 | 12,900 | 0 | ||||||||
| Long-Lived Assets | $ 5,169 | $ 6,909 | $ 5,169 | $ 6,909 | $ 69 | ||||||