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Financial Instruments - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Derivative
Dec. 31, 2012
Derivative
Derivative Instruments And Hedging Activities Disclosure [Abstract]    
Unrealized loss of hedging instrument $ 13,900,000 $ 8,300,000
Approximate fair value of notes 148,200,000 250,700,000
Carrying amount of notes 145,500,000 250,400,000
Tax Increment Financing Bonds ("TIF Bonds") 5,086,000 5,247,000
Aggregate notional amount 631,400,000 632,800,000
Number of interest rate derivatives held 10 10
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net $ (6,600,000)