Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net Loss	$ (2,135)	$ (4,014)
Other Comprehensive Income (Loss), Net of Tax:
Amortization of actuarial losses	63	158
Total other comprehensive income, net of tax	63	158
Total Comprehensive Loss	$ (2,072)	$ (3,856)