Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 32,461	$ 9,035	$ 20,077
Pension Adjustments:
Amortization of actuarial losses and prior service costs, net of tax of $209, $173, and $302 for 2019, 2018, and 2017, respectively	676	570	508
Actuarial losses arising during the period, net of tax benefit of $502, $302, and $194 for 2019, 2018, and 2017, respectively	(1,682)	(899)	(304)
Change in net unrealized gains (losses) on cash flow hedges, net of tax expense (benefit) of $29, $121, and $(145) for 2019, 2018, and 2017, respectively	95
Change in net unrealized gains (losses) on cash flow hedges, net of tax expense (benefit) of $29, $121, and $(145) for 2019, 2018, and 2017, respectively		407	(242)
Other Comprehensive (Loss) Income, Net of Tax	(911)	78	(38)
Comprehensive Income, Net of Tax	$ 31,550	$ 9,113	$ 20,039