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DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Interest Rate Swaps (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
LIBOR | Subordinated Debentures | Debentures III    
Derivative [Line Items]    
Receive Rate 1.67% 1.67%
LIBOR | Subordinated Debentures | Debentures II    
Derivative [Line Items]    
Receive Rate 3.35%  
Designated as Hedging Instrument | LIBOR | Debentures II    
Derivative [Line Items]    
Receive Rate 3.35% 3.35%
Designated as Hedging Instrument | Interest Rate Swap, 3 month LIBOR plus 1.67%    
Derivative [Line Items]    
Unrealized Losses $ 329,000 $ 342,000
Designated as Hedging Instrument | Interest Rate Swap, 3 month LIBOR plus 3.35%    
Derivative [Line Items]    
Unrealized Losses 331,000 353,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap, 3 month LIBOR plus 1.67%    
Derivative [Line Items]    
Notional Amount $ 2,000,000 $ 2,000,000
Pay Rate 5.979% 5.979%
Maturity in Years 9 years 4 days 9 years 3 months
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap, 3 month LIBOR plus 3.35%    
Derivative [Line Items]    
Notional Amount $ 3,000,000 $ 3,000,000
Pay Rate 7.505% 7.505%
Maturity in Years 5 years 7 months 2 days 5 years 9 months 29 days