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Earnings Per Share - Factors Used in Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Basic |  |  |  |
Net income to common stockholders | $ 9,467 | $ 4,431 | $ 19,748 | $ 9,243
Weighted average common shares outstanding | 18,012,905 | 17,859,604 | 17,984,184 | 17,838,267
Basic earnings per common share | $ 0.53 | $ 0.25 | $ 1.10 | $ 0.52
Diluted |  |  |  |
Net income to common stockholders | $ 9,467 | $ 4,431 | $ 19,748 | $ 9,243
Dilutive effect of preferred stock | 193 |  | 385 |
Net income to common stockholders - diluted | $ 9,660 | $ 4,431 | $ 20,133 | $ 9,243
Weighted average common shares outstanding | 18,012,905 | 17,859,604 | 17,984,184 | 17,838,267
Average shares and dilutive potential common shares | 18,893,158 | 18,042,585 | 18,899,865 | 18,011,931
Diluted earnings per common share | $ 0.51 | $ 0.25 | $ 1.07 | $ 0.51
Restricted Stock |  |  |  |
Diluted |  |  |  |
Dilutive effects of stock based compensation | 47,521 | 112,880 | 67,308 | 113,334
Antidilutive shares | 35,270 | 76,362 | 35,270 | 76,362
Stock Options |  |  |  |
Diluted |  |  |  |
Dilutive effects of stock based compensation | 32,592 |  | 40,233 |
Antidilutive shares | 58,442 | 164,175 | 58,442 | 164,175
Series A Preferred Dividends |  |  |  |
Diluted |  |  |  |
Dilutive effects of assumed conversion of shares | 315,773 |  | 315,773 |
Antidilutive shares |  | 315,773 |  | 315,773
Series B Preferred Dividends |  |  |  |
Diluted |  |  |  |
Dilutive effects of assumed conversion of shares | 354,471 |  | 354,471 |
Antidilutive shares |  | 360,578 |  | 360,578
Warrant |  |  |  |
Diluted |  |  |  |
Dilutive effects of assumed exercises of stock warrants | 129,896 | 70,101 | 137,896 | 60,330

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- Definition The after-tax amount of any dividends on convertible preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1505-109256 + Details
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=96948231&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1252-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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