Annual report pursuant to Section 13 and 15(d)

Derivative Financial Instruments - Additional Information (Detail)

v2.4.1.9
Derivative Financial Instruments - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2011
Agreement
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Number of interest rate swap agreements   2us-gaap_NumberOfInterestRateDerivativesHeld
Notional amount of borrowings   $ 73.0invest_DerivativeNotionalAmount
Interest rate derivatives fixed interest rate   3.878%us-gaap_DerivativeFixedInterestRate
Fair value of the interest rate swap liability $ 0.1us-gaap_InterestRateDerivativeLiabilitiesAtFairValue