Equity and Share-Based Compensation - Common Shares (Details)	3 Months Ended
	Mar. 31, 2018 shares
Common Stock
Changes in number of shares outstanding
Share count at the beginning of the period (in shares)	25,272,969
Issuance of successor common stock (in shares)	110,885
Share count at the end of the period (in shares)	25,383,854
Treasury Stock
Changes in number of shares outstanding
Treasury Stock, Shares, Beginning Balance	(99,623)
Acquisition of treasury stock (in shares)	(28,746)
Treasury Stock, Shares, Ending Balance	(128,369)