Statement of Cash Flows Supplemental Disclosure - Supplemental Disclosures of Cash Flow Information (Detail) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Supplemental Cash Flow Information [Line Items]
Interest on deposits and borrowings	$ 15,870	$ 8,611
Income taxes	2,500	425
Supplemental schedule of noncash activities:
Transfers from loans to real estate owned and other repossessed assets	892	651
Transfers from loans to loans held for sale		27,921
Transfers from premises and equipment to other assets, held for sale		1,720
Accretion of securities held to maturity	$ 122	151
Ohio Legacy Corp. [Member]
Supplemental schedule of noncash activities:
Issuance of common stock		25,816
Net assets acquired excluding cash and cash equivalents		$ 36

Noncash activities, accretion of securities held to maturity.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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