Income Taxes (Summary of the Total Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets
Tax carryforwards	$ 1,519	$ 990
Inventory	316	0
Accrued expenses and reserves	5,311	5,338
Other employee benefits	1,371	2,747
Other	1,167	1,088
Total deferred tax assets	9,684	10,163
Less: Valuation allowances	(1,157)	(1,295)
Deferred tax assets, net of valuation allowance	8,527	8,868
Deferred tax liabilities
Inventory	0	37
Accrued pension benefits	2,623	1,854
Depreciation and amortization	2,051	1,459
Total deferred tax liabilities	4,674	3,350
Net deferred tax asset	$ 3,853	$ 5,518