Quarterly report pursuant to Section 13 or 15(d)

Changes in Accumulated Other Comprehensive Loss, Net of Taxes, Related to Interest Rate Swap Agreements (Parenthetical) (Detail)

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Changes in Accumulated Other Comprehensive Loss, Net of Taxes, Related to Interest Rate Swap Agreements (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive loss before reclassifications, tax $ 529 $ 70 $ 1,287 $ 1,461
Interest Rate Swap
       
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Other comprehensive loss before reclassifications, tax (42) (476) (394) (156)
Amounts reclassified from accumulated other comprehensive loss to interest expense, tax $ 571 $ 546 $ 1,681 $ 1,617