v3.7.0.1
Loan Sales And Mortgage Servicing Rights - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Loan Sales And Mortgage Servicing Rights [Line Items]      
Gain on sale of loans $ 300 $ 0  
Mortgage servicing rights 113    
FFB      
Loan Sales And Mortgage Servicing Rights [Line Items]      
Gain on sale of loans 300    
Sale of multifamily loans through securitization 21,000    
Mortgage servicing rights recorded 100    
Mortgage servicing rights 2,200   $ 2,200
Loans serviced for others 417,300   412,200
Servicing fees earned on loans $ 200   $ 300