Pension and Other Postretirement Employee Benefit Plans - Additional Information (Detail 1) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	$ 0.1
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year	0.4
Non Qualified Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	0.0
Cost of Sales
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	0.7	$ 1.8
Selling, General and Administrative Expenses
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	$ 0.4	$ 0.8