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Stock Options and Restricted Stock (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock Option Activity | The following table summarizes information about the stock option activity under the 2005 Incentive Plan:
|  | Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (in years) |
Outstanding at January 1, 2016 |  |  | 88,879 |  |  |  | 12.10 |  |  |  | 4.3 |
Granted |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (68,879 | ) |  |  | 12.14 |  |  |  | 3.3 |
Canceled, forfeited, or expired |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2016 |  |  | 20,000 |  |  |  | 8.71 |  |  |  | 3.1 |
Exercisable at December 31, 2016 |  |  | 20,000 |  |  |  | 8.71 |  |  |  | 3.1 |
Outstanding at January 1, 2017 |  |  | 20,000 |  |  |  | 8.71 |  |  |  | 3.1 |
Granted |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |  |  |  | — |
Canceled, forfeited, or expired |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2017 |  |  | 20,000 |  |  |  | 5.21 |  |  |  | 2.1 |
Exercisable at December 31, 2017 |  |  | 20,000 |  |  |  | 5.21 |  |  |  | 2.1 |
Outstanding at January 1, 2018 |  |  | 20,000 |  |  |  | 5.21 |  |  |  | 2.1 |
Granted |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (15,000 | ) |  |  | 4.46 |  |  |  | 0.9 |
Canceled, forfeited, or expired |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2018 |  |  | 5,000 |  |  |  | 3.95 |  |  |  | 1.9 |
Exercisable at December 31, 2018 |  |  | 5,000 |  |  |  | 3.95 |  |  |  | 1.9 |
Weighted Average Grant Date Fair Values of Options Granted |
|  | 2018 |  |  | 2017 |  |  | 2016 |
|  | (in thousands) |
Cash received from option exercises |  | $ | 67 |  |  | $ | — |  |  | $ | 837 |
Total tax benefits realized for tax deductions from options exercised |  |  | — |  |  |  | — |  |  |  | 833 |
Total intrinsic value of options exercised |  |  | 766 |  |  |  | — |  |  |  | 2,967 |
Grant date fair value of options vested |  |  | — |  |  |  | — |  |  |  | — |
Aggregate intrinsic value of vested options outstanding |  |  | 264 |  |  |  | 1,128 |  |  |  | 1,073 |
Restricted Stock Activity | The following table summarizes information about the restricted stock activity under the 2005 Incentive Plan:
|  | Shares |  |  | Weighted- Average Grant- Date Fair Value per Share |
Nonvested balance at January 1, 2016 |  |  | 1,600 |  |  |  | 27.35 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | (800 | ) |  |  | 27.35 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2016 |  |  | 800 |  |  |  | 27.35 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | (800 | ) |  |  | 27.35 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2017 |  |  | — |  |  |  | — |
Granted |  |  | — |  |  |  | — |
Vested |  |  | — |  |  |  | — |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2018 |  |  | — |  |  |  | — |
The following table summarizes information about the common and restricted stock activity under the 2012 Incentive Plan:
|  | Shares |  |  | Weighted- AverageGrant- Date Fair Value per Share |
Nonvested balance at January 1, 2016 |  |  | 77,528 |  |  |  | 40.57 |
Granted |  |  | 27,077 |  |  |  | 54.44 |
Vested |  |  | (26,294 | ) |  |  | 45.18 |
Forfeited |  |  | (1,919 | ) |  |  | — |
Nonvested balance at December 31, 2016 |  |  | 76,392 |  |  |  | 43.91 |
Granted |  |  | 9,326 |  |  |  | 55.58 |
Vested |  |  | (24,839 | ) |  |  | 43.89 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2017 |  |  | 60,879 |  |  |  | 45.71 |
Granted |  |  | 3,304 |  |  |  | 59.16 |
Vested |  |  | (24,608 | ) |  |  | 44.31 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2018 |  |  | 39,575 |  |  |  | 48.93 |
The following table summarizes information about the restricted stock activity under the Non-Employee Director Restricted Stock Plan:
|  | Shares |  |  | Weighted- Average Grant- Date Fair Value per Share |
Nonvested balance at January 1, 2016 |  |  | 7,112 |  |  |  | 44.26 |
Granted |  |  | 5,952 |  |  |  | 63.57 |
Vested |  |  | (7,488 | ) |  |  | 44.54 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2016 |  |  | 5,576 |  |  |  | 64.50 |
Granted |  |  | 6,454 |  |  |  | 54.20 |
Vested |  |  | (5,576 | ) |  |  | 64.50 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2017 |  |  | 6,454 |  |  |  | 54.20 |
Granted |  |  | 5,761 |  |  |  | 60.75 |
Vested |  |  | (6,454 | ) |  |  | 54.20 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2018 |  |  | 5,761 |  |  |  | 60.75 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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