UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other cash flow information:
Capital expenditures	$ 6,400	$ 1,200
Increase in interest rate swaps	972
Increase in deferred tax liability	373
Increase in accumulated other comprehensive income	599	(1,048)
Interest paid, capitalized	$ 577	$ 146