Derivative Instruments and Hedging Activities - Income for Derivatives Designated as Hedging Instruments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Net loss		$ (1,875)		$ (1,990)
Net Loss on Termination of Interest Rate Swap [Member] | Interest Rate Swap [Member] | Cash Flow Hedge [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap-cash flow hedge-loss on termination		(1,866)		(1,866)
Interest Expense [Member] | Interest Rate Swap [Member] | Cash Flow Hedge [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap-cash flow hedge-interest payments		9		124
Interest rate swap-cash flow hedge-ineffectiveness