Share-Based Compensation - Restricted Stock Units (Details) - shares	1 Months Ended	12 Months Ended
	Nov. 30, 2014	Dec. 31, 2017	Dec. 31, 2016
Number of Shares
Outstanding at beginning of year (in shares)		46,908
Granted (in shares)		1,159,856
Canceled/forfeited (in shares)		(276)
Vested/Paid (in shares)		(39,168)
Outstanding at end of year (in shares)		1,167,320	46,908
MRSU
Number of Shares
Outstanding at beginning of year (in shares)		14,929
Granted (in shares)	60,767	270,269
Canceled/forfeited (in shares)		0
Vested/Paid (in shares)		(7,465)
Outstanding at end of year (in shares)		277,733	14,929
RSU
Number of Shares
Outstanding at beginning of year (in shares)		31,979
Granted (in shares)		889,587
Canceled/forfeited (in shares)		(276)
Vested/Paid (in shares)		(31,703)	(111,461)
Outstanding at end of year (in shares)		889,587	31,979