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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | COMMON STOCK [Member] | CAPITAL SURPLUS [Member] | RETAINED EARNINGS [Member] | ACCUMULATED OTHER COMPREHENSIVE INCOME [Member]
--- | --- | --- | --- | --- | ---
Balance at beginning of period at Dec. 31, 2014 |  | $ 15,504 | $ 96,841 | $ 492,776 | $ 4,193
Shares issued, Value |  | 8 | 236 |  |
Net income | $ 16,259 |  |  | 16,259 |
Net change | 739 |  |  |  | 739
Tax effect of stock options |  |  | (64) |  |
Dividends on common stock |  |  |  | (5,277) |
Stock-based compensation arrangements |  |  | 464 |  |
Balance at end of period at Mar. 31, 2015 | 621,679 | 15,512 | 97,477 | 503,758 | 4,932
Balance at beginning of period at Dec. 31, 2015 | 655,510 | 15,597 | 102,865 | 535,521 | 1,527
Shares issued, Value |  | 31 | 871 |  |
Net income | 16,579 |  |  | 16,579 |
Net change | 530 |  |  |  | 530
Tax effect of stock options |  |  | (209) |  |
Dividends on common stock |  |  |  | (5,579) |
Stock-based compensation arrangements |  |  | 451 |  |
Shares acquired and canceled, Value |  | (100) |  | (5,423) |
Balance at end of period at Mar. 31, 2016 | $ 662,661 | $ 15,528 | $ 103,978 | $ 541,098 | $ 2,057

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- Definition The tax effects of employee stock option transactions that are recognized differently for financial reporting and tax purposes, occurring during the period and charged or credited directly to shareholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6419406&loc=d3e23586-113945 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 740 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6419406&loc=d3e23594-113945 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 11 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e39076-109324 + Details
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- Definition Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: 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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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