CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
Interest rate swaps, tax	$ 1,345	$ 966	$ 184
Pension adjustment, tax	543	0	0
Capitalized swap intererst, tax (benefit)	$ 109	$ 74	$ 199