Derivative and Hedging Activities - Summary of Notional Amount and Fair Value of Derivative Instruments (Footnote) (Details) (Derivative Instrument 4, Designated as Hedging Instrument, Accounts payable, accrued expenses and other liabilities, Interest Rate Swap, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Derivative
Derivatives, Fair Value [Line Items]  
Number of interest rate derivatives held 8
Notional amount $ 61,758
Minimum  
Derivatives, Fair Value [Line Items]  
Notional amount 7,600
Maximum  
Derivatives, Fair Value [Line Items]  
Notional amount $ 7,900