v3.19.1
Derivative Financial Instruments (Details) - USD ($)
12 Months Ended
Jan. 07, 2015
Dec. 31, 2018
Dec. 31, 2017
Interest Rate Swap      
Derivatives, Fair Value [Line Items]      
Notional amount $ 2,000,000    
Fair value of derivative   $ 5,000 $ 7,000
Derivative, term of contract 4 years    
Derivative, fixed interest rate 3.493%    
Hedge ineffectiveness on derivative   0  
Interest Rate Swap | London Interbank Offered Rate (LIBOR)      
Derivatives, Fair Value [Line Items]      
Derivative, basis spread on variable rate 1.87%    
Forward Contracts | Forward Sales Agreement      
Derivatives, Fair Value [Line Items]      
Notional amount   25,000,000 41,000,000
Liability, notional amount   4,300,000 12,600,000
Fair value of derivative   (253,000) (42,000)
Liability, fair value of derivative   59,000 18,000
Interest Rate Lock Commitments | Interest Rate Contract      
Derivatives, Fair Value [Line Items]      
Notional amount   32,900,000 56,900,000
Best Efforts Basis | Interest Rate Lock Commitments | Interest Rate Contract      
Derivatives, Fair Value [Line Items]      
Notional amount   1,800,000 6,200,000
Fair value of derivative   31,000 102,000
Designated as Hedging Instrument | Excluding Best Efforts Basis Commitments | Interest Rate Lock Commitments | Interest Rate Contract      
Derivatives, Fair Value [Line Items]      
Notional amount   31,100,000 50,700,000
Fair value of derivative   $ 234,000 $ 108,000