Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Consolidated Statements Of Comprehensive Income [Abstract]
NET INCOME		$ 204	$ 3,720
OTHER COMPREHENSIVE INCOME, NET OF TAX:
Unrealized gain on available-for-sale securities		1,835	1,303
Defined benefit pension plans:
Amortization of prior service cost	[1]	5	6
Amortization of actuarial loss	[1]	82	61
Net change, Net-of-Tax Amount		87	67
OTHER COMPREHENSIVE INCOME, NET OF TAX		1,922	1,370
COMPREHENSIVE INCOME		$ 2,126	$ 5,090

[1] Included in net periodic pension cost, as described in Note 9 - "Net Periodic Benefit Costs"