Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net Income (Loss)	$ (98)	$ (4,005)	$ (5,133)	$ 10,388
Other Comprehensive Income (Loss), Net of Tax:
Amortization of actuarial losses	219	63	657	188
Total other comprehensive income, net of tax	219	63	657	188
Total Comprehensive Income (Loss)	$ 121	$ (3,942)	$ (4,476)	$ 10,576