Accrued Liabilities - Other - Accrued Liabilities - Other (Detail) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Payables and Accruals [Abstract]
Environmental	$ 5,036,000	$ 9,475,000
Other professional fees	1,030,000	496,000
Warranty	908,000	1,176,000	$ 1,145,000
Taxes (other than income) and insurance	805,000	879,000
Foreign currency forward contracts	534,000	673,000
Commissions	510,000	551,000
Accrued customer incentive plans	392,000	414,000
Deferred compensation - current	229,000	265,000
Deferred revenue	199,000	44,000
Litigation and legal fees	112,000	91,000
Acquisition earn-out, current		32,000
Other	1,897,000	2,370,000
Accrued liabilities - other	$ 11,652,000	$ 16,466,000