Derivative Instruments and Hedging Activities - Derivatives Designated as Hedging Instruments (Detail) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	$ 19,269	$ 19,945
Derivative Assets, Fair Value	0	0
Derivative Liabilities, Fair Value	438	241
Net loss	(377)	(66)	$ (1,990)
Accumulated Other Comprehensive (Loss) Income, fair value, net of taxes	(285)	(157)
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Notional Amount	19,269	19,945
Derivative Assets, Fair Value	0	0
Accumulated Other Comprehensive (Loss) Income, fair value, net of taxes	(285)	(157)
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap—cash flow hedge—net interest payments	377	66	124
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Net Loss on Termination of Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap—cash flow hedge—loss on termination	0	0	$ (1,866)
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Other Liabilities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Liabilities, Fair Value	$ 438	$ 241