Commitments and Contingencies - Legal Matters - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended		6 Months Ended	0 Months Ended
	Jun. 30, 2014 Cases	Dec. 31, 2013 Cases	Jun. 30, 2014 Claimed by Plaintiffs [Member]	Jun. 10, 2014 Maximum [Member]
Loss Contingencies [Line Items]
Cumulative settlement payments for cases involving asbestos-related claims	$ 0.7
Average cost per settled claim excluding legal fees	25,000
Number of claims pending	186	173
Number of new cases filed	27
Number of cases dismissed	14
Number of cases settled	0
Plaintiffs property damages and other loss	75		36
Payment for attorneys fees and reimbursement				$ 0.2
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.