Loans and Allowance for Loan Losses (Details 1)	12 Months Ended
	Dec. 31, 2017
Factor Considered:
Levels of and trends in charge-offs, classifications and non-accruals	Stable
Trends in volume and terms	Increasing
Changes in lending policies and procedures	Stable
Experience, depth and ability of management, including loan review function	Stable
Economic trends, including valuation of underlying collateral	Stable
Concentrations of credit	Decreasing