Summary of Significant Accounting Policies - Cash and Cash Equivalents and Restricted Cash (Details) - Successor - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents	$ 155,792		$ 150,045
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash included in other long-term assets	1,354		2,611
Total cash and cash equivalents and restricted cash included in the Statements of Cash Flows	$ 157,146	$ 16,066	$ 152,656	$ 131,602	$ 0