Mergers and Acquisitions (Details Textual) - The Foothills Bank	9 Months Ended
Sep. 30, 2017 USD ($) shares
Business Acquisition
Business Acquisition, Effective Date of Acquisition	Apr. 30, 2017
Percentage of Outstanding Common Stock Acquired	100.00%
Business Combination, Consideration Transferred	$ 64,015,000
Number of Shares Issued for Aquisition \| shares	1,381,661
Cash consideration for outstanding shares	$ 17,342,000
Loans receivable	292,529,000
Loans Receivable Acquired, Gross Principal and Contractual Interest Due	303,527,000
Third-party Acquisition Related Costs	877,000
Net interest income and non-interest income	8,579,000
Net income	$ 1,853,000

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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Number of shares of equity interests issued or issuable to acquire entity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

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For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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