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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Stock-Based Compensation [Abstract] |
Stock option activity | The following table summarizes information concerning stock options outstanding at December 31, 2015:
|  | Number of Shares |  |  | Weighted average exercise price |  | Weighted Average Remaining Contractual Term (in yrs) |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2015 |  |  | 1,038,342 |  |  | $ | 23.10 |  |  |  |  |
Granted |  |  | 36,316 |  |  |  | 25.85 |  |  |  |  |
Exercised |  |  | (519,947 | ) |  |  | 23.16 |  |  |  |  |
Forfeited |  |  | - |  |  |  | - |  |  |  |  |
Expired |  |  | (13,147 | ) |  |  | 22.97 |  |  |  |  |
Outstanding at December 31, 2015 |  |  | 541,564 |  |  | $ | 23.23 |  |  |  | 3.24 |  |  | $ | 2,541,332 |
Exercisable at December 31, 2015 |  |  | 501,952 |  |  | $ | 23.03 |  |  |  | 2.77 |  |  | $ | 2,457,469 |
Expected to Vest |  |  | 39,240 |  |  | $ | 25.76 |  |  |  | 9.11 |  |  | $ | 83,294 |
Cash proceeds, tax benefits and intrinsic value of stock options exercised | Cash proceeds, tax benefits and intrinsic value related to total stock options exercised is as follows:
|  | Years ended December 31, |
(dollars in thousands) |  | 2015 |  |  | 2014 |  |  | 2013 |
Proceeds from stock options exercised |  | $ | 12,044 |  |  | $ | 6,554 |  |  | $ | 7,927 |
Tax (expense) benefits related to stock options exercised |  |  | (43 | ) |  |  | 313 |  |  |  | 178 |
Intrinsic value of stock options exercised |  |  | 2,446 |  |  |  | 789 |  |  |  | 905 |
Fair value of shares vested during the year |  |  | 63 |  |  |  | 393 |  |  |  | 766 |
Unvested restricted awards and unvested restricted units activity | The following table summarizes information for unvested restricted stock awards outstanding as of December 31, 2015:
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value |
Unvested Restricted Stock Awards |  |  |  |  |  |
Unvested at January 1, 2015 |  |  | 52,000 |  |  | $ | 23.43 |
Forfeited |  |  | - |  |  |  | - |
Vested |  |  | (29,000 | ) |  |  | 22.85 |
Unvested at December 31, 2015 |  |  | 23,000 |  |  | $ | 24.17 |
The following table summarizes information for unvested restricted stock units outstanding as of December 31, 2015:
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value |
Unvested Restricted Stock Units |  |  |  |  |  |
Unvested at January 1, 2015 |  |  | 638,975 |  |  | $ | 31.01 |
Forfeited |  |  | (8,407 | ) |  |  | - |
Vested |  |  | (125,520 | ) |  |  | - |
Granted |  |  | 160,040 |  |  |  | 24.67 |
Unvested at December 31, 2015 |  |  | 665,088 |  |  | $ | 35.73 |

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- Definition Tabular disclosure of cash proceeds, tax benefits and intrinsic value of stock options exercised. + References No definition available. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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