Derivatives - Summary of Designated Derivative Instruments Classified as Derivative Assets (Details)	9 Months Ended
	Sep. 30, 2015 USD ($) Instrument	Jan. 31, 2015 USD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Loss Recognized in Accumulated Comprehensive Loss	$ (2,695,000)
Interest Rate Swaps
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Quantity | Instrument	4
Maturity Dates	Oct. 31, 2028
Notional Amount	$ 109,143,000	$ 109,100,000
Fair Market Value	2,212,000
Credit Risk Adjustment	483,000
Adjusted Fair Market Value	2,695,000
Loss Recognized in Accumulated Comprehensive Loss	2,695,000
Interest Expense Recognized into Earnings	$ 926,000
Interest Rate Swaps | Minimum
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Hedge Interest Rates	2.17%
Interest Rate Swaps | Maximum
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Hedge Interest Rates	2.18%