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Income Taxes - Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax (Detail)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]      
Federal statutory tax rate 35.00% 35.00% 35.00%
State (2.30%) 0.70% 7.00%
State apportionment rate change (14.90%)    
Non-deductible executive compensation 0.70% 1.40% 3.50%
Valuation allowances 3.50% 8.80% (0.40%)
Other 0.60% 2.20% 0.30%
Consolidated effective tax rate 22.60% 48.10% 45.40%