Stockholders' Equity - Gains (Losses) Reclassified Out of Aoci (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Amortization of interest rate hedge	$ 264
Amortization expense relating to employee benefit plans	1,620
Less-tax expense	402
Net of tax	1,218
Total reclassifications, net of tax	$ 1,482

Other Comprehensive Income Loss Reclassification Adjustment On Amortization Of Loss On Interest Rate Hedge Included In Net Income Before Tax

No definition available.

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