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Subsequent Events - Additional Information (Detail) - USD ($) | Feb. 04, 2016 | Feb. 03, 2016 | Feb. 01, 2016 | Dec. 31, 2015
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Subsequent Event [Line Items] |  |  |  |
Reported total assets of acquiree |  |  |  | $ 148,200,000
Total deposits held by acquiree |  |  |  | 122,800,000
Total loans of acquiree |  |  |  | $ 106,100,000
Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Cash paid for each share to Peoples shareholder | $ 81.75 |  |  |
Exchange ratio per share to Peoples shareholder | 3.0122% |  |  |
Business combination stock transferred, percentage of consideration | 65.00% |  |  |
Business combination cash transferred, percentage of consideration | 35.00% |  |  |
Market closing price per share |  | $ 23.99 |  |
Estimated transaction value |  | $ 22,500,000 |  |
Series B Preferred Stock [Member] | Subsequent Event [Member] |  |  |  |
Subsequent Event [Line Items] |  |  |  |
Preferred stock, shares outstanding |  |  | 12,500 |
Preferred stock, liquidation value |  |  | $ 1,000 |
Preferred stock, redemption price |  |  | $ 12,510,416.67 |

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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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