Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Translation adjustment, net of tax expense of $0, $0 and ($222) for 2018, 2017 and 2016, respectively	$ 0	$ 0	$ (222)
Unamortized pension adjustments, net of tax benefit (expense) of ($59), $37 and $88, for 2018, 2017 and 2016, respectively	$ (59)	$ 37	$ 88