Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Oct. 03, 2014	Dec. 31, 2014 Cases	Dec. 31, 2013 Cases	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Rent expense		$ 2,900,000	$ 2,500,000	$ 1,800,000
Cumulative settlement payments for cases involving asbestos-related claims		800,000
Average cost per settled claim excluding legal fees		25,000
Number of claims pending		195	173
Number of new cases filed		51
Number of cases dismissed		29
Number of cases settled		0
Legal reserve expense amount		300,000	3,500,000
Settlement recovering expense		200,000
Loss amount awarded for damage	600,000
Loss amount not paid under the contract	$ 200,000
Loss contingency settlement terms		After a trial on January 12, 2015, on February 27, 2015, the Court issued Findings of Fact and Conclusions of Law that provide that we and Kirk & Blum breached our contract with Viron and that Viron is entitled to damages in the amount of approximately $0.6 million plus attorneys' fees. Additionally, the Court concluded that we and Kirk & Blum are not entitled to an offset for the invoiced amounts of $0.2 million not paid by Viron under the contract.
Assessment regarding Loss contingency impact Description		We are not aware of pending claims or assessments, other than as described above, which may have a material adverse impact on our liquidity, financial position, results of operations, or cash flows.