Changes in Accumulated Other Comprehensive Loss - Reclassification of Adjustments out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity [Abstract]
Amortization of Prior Service Costs	$ (4)	$ (6)	$ (13)	$ (186)
Recognized Net Actuarial Loss	60	41	183	749
Total	56	35	170	563
Less: Tax Benefit	15	13	44	202
Net of Tax	$ 41	$ 22	$ 126	$ 361