Mergers and Acquisitions (Details Textual) (Montana Community Banks, Inc., USD $)	3 Months Ended
	Mar. 31, 2015
Montana Community Banks, Inc.
Business Acquisition
Effective Date of Acquisition	Feb. 28, 2015
Percentage of Outstanding Common Stock Acquired	100.00%
Business Combination, Consideration Transferred	$ 22,995,000
Number of Shares Issued for Aquisition	443,644
Cash consideration for outstanding shares	12,219,000
Loans receivable	84,689,000
Loans Receivable Acquired, Gross Principal and Contractual Interest Due	88,817,000
Core deposit intangible	2,087,000
Core Deposit Intangible Assets, Weighted Average Useful Life	10 years
Third-party Acquisition Related Costs	595,000
Net interest income and non-interest income	889,000
Net income	$ 64,000