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Restructuring - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended 3 Months Ended
Mar. 31, 2014
Employee Severance
Dec. 31, 2013
Two Thousand and Thirteen Restructuring Plan [Member]
Dec. 31, 2013
Safety And Security Systems
Two Thousand and Thirteen Restructuring Plan [Member]
Dec. 31, 2013
Corporate, Non-Segment [Member]
Two Thousand and Thirteen Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]        
Severance costs     $ 1.2 $ 0.3
Adjustments (0.2)      
Restructuring and Related Cost, Expected Cost   $ 0.4