Derivative Instruments and Hedging Activities - Fair Value of Company's Derivative Financial Instruments Classification on Unaudited Condensed Consolidated Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013 Other Assets [Member]	Dec. 31, 2013 Other Assets [Member] Interest Rate Swaps [Member]	Jun. 30, 2014 Other Liabilities [Member]	Jun. 30, 2014 Other Liabilities [Member] Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives Fair Value	$ 71	$ 71
Liabilities Derivatives Fair Value			$ 1,625	$ 1,625