Accumulated Other Comprehensive Loss - Summary of Reclassifications from Accumulated Other Comprehensive Loss to Net Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Amortization of defined benefit plan pension items
Amortization of loss	$ 205	$ 612
Income tax effect	(84)	(252)
After tax	121	360
Amortization of loss on ineffective interest rate swap
Reclassification to interest expense	1,082	1,948
Income tax effect	(445)	(801)
After tax	637	1,147
Total reclassifications net of income tax	$ 758	$ 1,507