XML 119 R103.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair Value Measurements (Detail Textuals) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Impaired loans with a specific allowance $ 7,923,000 $ 7,030,000
Specific allowance related to impaired loans 1,333,000 1,080,000
Impaired financing receivable charge offs 788,000 1,000,000
Mortgage servicing rights (MSRs)    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Increase (decrease) in valuation of mortgage servicing rights arising from inputs and assumptions $ 364,000 $ 108,000