Income Taxes (Components of Deferred Tax Asset and Liability) (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Accounts receivable	$ 218	$ 211
Inventories	741	884
Net operating loss carryforwards	4,213	4,992
Other accrued liabilities	2,745	3,341
Pension	3,684	7,295
Tax Credits	1,634	1,879
Total deferred tax assets	13,235	18,602
Deferred tax liabilities:
Intangible assets	4,077	6,525
Property, plant and equipment	15,101	15,195
Total deferred tax liabilities	19,178	21,720
Valuation allowance	4,307	3,727
Net deferred tax liabilities	$ (10,250)	$ (6,845)