Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 29,174	$ 32,461	$ 9,035
Pension Adjustments:
Amortization of actuarial losses and prior service costs, net of tax of $236, $209, and $173 for 2020, 2019, and 2018, respectively	757	676	570
Actuarial losses arising during the period, net of tax benefit of $701, $502, and $302 for 2020, 2019, and 2018, respectively	(2,251)	(1,682)	(899)
Change in net unrealized gains on cash flow hedges, net of tax of $57, $29, and $121 for 2020, 2019, and 2018, respectively	162	95	407
Other Comprehensive (Loss) Income, Net of Tax	(1,332)	(911)	78
Comprehensive Income, Net of Tax	$ 27,842	$ 31,550	$ 9,113