Nature of Operations and Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Nature of Operations and Summary of Significant Accounting Policies
Number of Bank Divisions	13
Number of Operating Segments	1
Maximum Period of Original Maturity to be Included in Cash and Cash Equivalents	3 months
Federal Reserve Balance or Cash on Hand Required	$ 34,309,000
Minimum Period Past Due to Consider Loans as Delinquent	30 days
Minimum Period Past Due to Consider Loans as Non Accrual	90 days
Number of Quarters used to Determine Historical Loss Experience	12
Minimum Number Days Delinquent to Charge off Consumer Loans	120 days
Long-lived assets considered impaired	$ 0	$ 0
Maximum period up to which purchase price of business is allocated to assets acquired and liabilities assumed	1 year
Number of Reporting Units Subsequent to Aggregation for Goodwill Assessment	1
Bank Owned Life Insurance	$ 49,534,000	$ 46,030,000
Percentage of likelihood for term more likely than not	50.00%
Number of Steps to Achieve Core Revenue Recognition Principal	5
Minimum Range
Nature of Operations and Summary of Significant Accounting Policies
Number of years for home equity loan origination term	10 years
Minimum Range | Office Buildings
Nature of Operations and Summary of Significant Accounting Policies
Useful life of premises and equipment	15 years
Minimum Range | Furniture, fixtures and equipment
Nature of Operations and Summary of Significant Accounting Policies
Useful life of premises and equipment	3 years
Maximum Range
Nature of Operations and Summary of Significant Accounting Policies
Number of years for home equity loan origination term	15 years
Maximum Range | Office Buildings
Nature of Operations and Summary of Significant Accounting Policies
Useful life of premises and equipment	40 years
Maximum Range | Furniture, fixtures and equipment
Nature of Operations and Summary of Significant Accounting Policies
Useful life of premises and equipment	10 years