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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 28, 2012
acre
Jun. 30, 2012
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Commitments and Contingencies Disclosure [Line Items]              
Total rent expense     $ 0.2 $ 0.6 $ 0.5 $ 1.9  
Aggregate environmental-related accruals     1.6   1.6   1.5
Threshold of ownership percentage in Company for private investigation of compliance         5.00%    
Other income related to contract termination   0.8     0.8    
Estimated land contribution to joint venture (in acres) 57            
Percentage of Capital Contribution 66.00%            
Estimated construction loan 9.9            
Expected land and cash contribution, year 2013            
Land
             
Commitments and Contingencies Disclosure [Line Items]              
Estimated contribution to joint venture 6.0            
Surety bonds | Certain development projects
             
Commitments and Contingencies Disclosure [Line Items]              
Commitment obligations     10.8   10.8   15.7
Surety bonds | Standby letters of credit
             
Commitments and Contingencies Disclosure [Line Items]              
Commitment obligations     $ 1.0   $ 1.0   $ 0.8