CONSOLIDATED AND COMBINED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 71,892	$ 156,850	$ 5,699
Realized and unrealized gain (loss) on hedging instruments	4,297	540	(316)
Comprehensive income	76,189	157,390	5,383
Less: comprehensive income attributable to noncontrolling interest	(524)	(58)	0
Comprehensive Income Attributable to Common Shareholders	$ 75,665	$ 157,332	$ 5,383