XML 69 R53.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes - Summary of Company's Tax Position (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]                      
Income (Loss) Before Provision for Taxes $ 25,663 $ (15,614) $ (2,083) $ 2,088 $ 23,982 $ (1,960) $ (10,255) $ 2,733 $ 10,054 $ 14,500 $ (5,936)
Provision for Taxes                 $ 38,380 $ 9,392 $ 239
Effective Income Tax Rate                 381.70% 64.80% (4.00%)