Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2017

Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component

Changes in accumulated other comprehensive income (loss) by component is as follows for the year ended December 31, 2017:

(Thousands)	2017			2016			2015
Cash flow hedge changes in fair value gain (loss):
Balance at begininng of period	$	(6,102	)	$	(5,427	)	$	—
Other comprehensive income (loss) before reclassifications		(7,735	)		(24,465	)		(21,682	)
Amounts reclassified from accumulated other comprehensive income		20,630			23,790			16,255
Net other comprehensive income		6,793			(6,102	)		(5,427	)
Less:  Other comprehensive (loss) income attributable to noncontrolling interest		442			—			—
Balance at end of period		6,351			(6,102	)		(5,427	)
Foreign currency translation gain (loss):
Balance at begininng of period		(267	)		—			—
Translation adjustments		1,660			(267	)		—
Net other comprehensive income		1,393			(267	)		—
Less:  Other comprehensive (loss) income attributable to noncontrolling interest		(77	)		—			—
Balance at end of period		1,470			(267	)		-
Accumulated other comprehensive income (loss) at end of period	$	7,821		$	(6,369	)	$	(5,427	)