Derivatives - Summary of Designated Derivative Instruments Classified as Derivative Liabilities (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) Instrument	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jan. 31, 2015 USD ($)
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Deferred Tax Benefit	$ (5,299,000)	$ (10,043,000)	$ (760,000)
Loss Recognized in Accumulated Comprehensive Loss	$ (921,000)
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	384,000
Credit Risk Adjustment	537,000
Adjusted Fair Market Value	921,000
Loss Recognized in Accumulated Comprehensive Loss	921,000
Interest Expense Recognized into Earnings	$ 1,521,000
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%