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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Statement of Financial Position [Abstract] |  |
Cash and due from banks, interest-bearing amounts | $ 87,201 | $ 41,639
Common stock, par value (in dollars per share) | $ 2.50 | $ 2.50
Common stock, shares authorized (in shares) | 50,000,000 | 50,000,000
Common stock, shares issued (in shares) | 36,130,480 | 36,130,480
Common stock, shares outstanding (in shares) | 34,913,023 | 34,810,374
Treasury stock, shares (in shares) | 1,217,457 | 1,320,106

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- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.2) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=73530178&loc=d3e59706-112781 + Details
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