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Supplemental Cash Flow Disclosures - Non-cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016
Supplemental Cash Flow Information [Abstract] |  |
Unsettled Bank Owned Life Insurance Proceeds | $ 897 | $ 320
Cash paid during the period for: |  |
Interest | 14,995 | 14,768
Income Taxes Paid, Net | 17,394 | 15,750
Non-cash investing and financing activities: |  |
Loans Transferred to Other Real Estate Owned and Repossessions | 2,154 | 3,973
Fair value of loans transferred from held to maturity to held for sale | 13,292 | 3,573
Gross increase in market value adjustment to securities available for sale | 5,240 | 13,094
Gross (decrease) increase in market value adjustment to securities derivatives | (538) | 981
Investments committed to purchase not settled | 0 | 276
Stock Issued During Period, Value, Treasury Stock Reissued | 2,258 | 0
Noncash or Part Noncash Acquisition, Value of Assets Acquired | $ 36,926 | $ 0

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 + Details
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