CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Parenthetical - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unrealized (loss) gain on derivatives designated and qualifying as cash flow hedges, tax	$ (346)	$ 17	$ (21)
Unrecognized amounts from defined benefit pension plans, tax	$ 1,681	$ 19,252	$ 4,297