Income Taxes (Components of Deferred Income Taxes) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Reserve for receivables and inventories	$ 2,979	$ 2,769
Accrued compensation	1,180	1,105
Payables	1,237	694
Non-pension postretirement benefits	2,337	2,601
Net operating loss and credit carryforwards	1,193	1,668
Accrued pension benefits	1,398	1,122
Accrued employee benefits	3,969	2,405
Other	856	858
Total deferred tax assets	15,149	13,222
Depreciation	4,652	4,570
Amortization	9,850	10,881
Total deferred tax liabilities	14,502	15,451
Net deferred tax assets (liabilities)	647
Net deferred tax assets (liabilities)		(2,229)
Tax credit carry forward	200	200
Undistributed earnings of foreign subsidiary	21,000
Maximum	1,200
General Business Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
General business credit carryforwards	$ 2,800	$ 4,100