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	$ 2,867	$ 1,456
Inventory	316	0
Accrued expenses and reserves	5,896	5,505
Other employee benefits	1,500	2,349
Other	1,412	996
Total deferred tax assets	11,991	10,306
Less: Valuation allowances	(1,069)	(1,162)
Deferred tax assets, net of valuation allowance	10,922	9,144
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	$ 6,248	$ 5,794