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Consolidated Statements of Changes in Shareholders' Equity $ in Thousands | USD ($)
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Total shareholders’ equity at beginning of period at Dec. 31, 2014 | $ 2,851,403
Net income | 221,090
Other comprehensive income (loss) | (7,898)
Stock option exercises (908,921 shares in 2016 and 227,851 shares in 2015) | 11,830
Stock compensation expense recognized in earnings | 7,679
Tax benefits related to stock compensation | 880
Purchase of treasury stock (1,095,308 shares in 2015) | (74,947)
Cash dividends – preferred stock (approximately $1.01 per share in both 2016 and in 2015) | (6,047)
Cash dividends – common stock ($1.61 per share in 2016 and $1.57 per share in 2015) | (99,017)
Total shareholders’ equity at end of period at Sep. 30, 2015 | 2,904,973
Total shareholders’ equity at beginning of period at Dec. 31, 2015 | 2,890,343
Net income | 220,542
Other comprehensive income (loss) | 101,650
Stock option exercises (908,921 shares in 2016 and 227,851 shares in 2015) | 47,873
Stock compensation expense recognized in earnings | 7,998
Tax benefits related to stock compensation | 0
Purchase of treasury stock (1,095,308 shares in 2015) | 0
Cash dividends – preferred stock (approximately $1.01 per share in both 2016 and in 2015) | (6,047)
Cash dividends – common stock ($1.61 per share in 2016 and $1.57 per share in 2015) | (100,563)
Total shareholders’ equity at end of period at Sep. 30, 2016 | $ 3,161,796

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- Definition Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65880886&loc=d3e23524-113945 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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