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Stock-Based Compensation Plans | 12 Months Ended
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Dec. 31, 2015
Stock-Based Compensation Plans |
Stock-Based Compensation Plans | (14) Stock-Based Compensation Plans The components of stock compensation expense for the years ended December 31, 201 5, 201 4, and 201 3, included in the accompanying consolidated statements of income were as follows:
|  | 2015 |  | 2014 |  | 2013 |
|  | (in thousands) |
2007 Stock Incentive Plan |  | $ | 4,102 |  | $ | 3,459 |  | $ | 3,393 |
Employee Stock Purchase Plan |  |  | 48 |  |  | 50 |  |  | 46 |
Total Stock Compensation Expense |  | $ | 4,150 |  | $ | 3,509 |  | $ | 3,439 |
The significant stock compensation plans are described below. Our 2007 Stock Incentive Plan (the 2007 Plan) was adopted on May 24, 2007. Under this 2007 Plan, a total of 2,000,000 shares are authorized for stock based compensation available in the form of either restricted stock or stock options. On May 28, 2015, the Company’s shareholders authorized an increase in the number of shares of Common Stock available for grant by 800,000 shares bringing the total to 2,800,000 shares authorized. 2,263,712 shares of restricted stock were granted under the 2007 Stock Incentive Plan by December 31, 2015. Of this amount, 135,368 shares of restricted stock were cancelled and returned to the pool of shares which could be granted under the 2007 Stock Incentive Plan resulting in a net number of 671,656 shares which were available as of December 31, 2015 for future issuance under the 2007 Incentive Plan. The fair value of the restricted stock awards equaled the stock price at the date of grants. The following table summarizes restricted stock activity during the years ended December 31:
|  | Shares |
Restricted stock at December 31, 2012 |  | 682,654 |
Granted in 2013 (vesting over 4 years) |  | 130,000 |
Granted in 2013 (vesting on first anniversary from date of issuance) |  | 21,408 |
Cancelled in 2013 |  | (60,110) |
Vested in 2013 |  | (258,822) |
Restricted stock at December 31, 2013 |  | 515,130 |
Granted in 2014 (vesting over 3 years) |  | 174,500 |
Granted in 2014 (vesting over 4 years) |  | 13,000 |
Granted in 2014 (vesting on first anniversary from date of issuance) |  | 50,208 |
Cancelled in 2014 |  | (5,750) |
Vested in 2014 |  | (221,732) |
Restricted stock at December 31, 2014 |  | 525,356 |
Granted in 2015 (vesting over 3 years) |  | 125,000 |
Granted in 2015 (vesting over 4 years) |  | 5,000 |
Granted in 2015 (vesting on first anniversary from date of issuance) |  | 16,440 |
Cancelled in 2015 |  | — |
Vested in 2015 |  | (275,201) |
Restricted stock at December 31, 2015 |  | 396,595 |
Our accounting policy is to recognize the associated expense of such awards on a straight-line basis over the vesting period. At December 31, 201 5 the stock compensation expense related to the restricted stock awards that will be recognized over the average remaining vesting period of 1.6 years totals $4.7 million. At December 31, 201 5, the intrinsic value of unvested restricted stock awards is $8.0 million. The Plan terminates on May 24, 2017. A summary of activity under the 2007 Plan for the years ended December 31, 201 5, 201 4, and 201 3 is as follows:
|  |  |  | Weighted Average |  |  |  |
|  | Number Outstanding |  | Grant Date Fair Value |  | Aggregate Value |
Balance as of December 31, 2012 |  | 682,654 |  | $ | 12.83 |  | $ | 8,756,990 |
Shares granted |  | 151,408 |  |  | 14.25 |  |  | 2,158,011 |
Shares cancelled |  | (60,110) |  |  | 12.41 |  |  | (745,876) |
Shares vested |  | (258,822) |  |  | 12.01 |  |  | (3,108,651) |
Balance as of December 31, 2013 |  | 515,130 |  | $ | 13.71 |  | $ | 7,060,474 |
Shares granted |  | 237,708 |  |  | 19.84 |  |  | 4,710,362 |
Shares cancelled |  | (5,750) |  |  | 14.02 |  |  | (80,630) |
Shares vested |  | (221,732) |  |  | 13.24 |  |  | (2,903,595) |
Balance as of December 31, 2014 |  | 525,356 |  | $ | 16.72 |  | $ | 8,786,611 |
Shares granted |  | 146,440 |  |  | 18.53 |  |  | 2,713,159 |
Shares cancelled |  | — |  |  | — |  |  | — |
Shares vested |  | (275,201) |  |  | 15.87 |  |  | (4,367,983) |
Balance as of December 31, 2015 |  | 396,595 |  | $ | 17.98 |  | $ | 7,131,787 |
Employee Stock Purchase Plan: Under our Employee Stock Purchase Plan (ESPP), as amended and restated effective May 20, 2010, 250,000 shares of common stock have been reserved for issuance. The Purchase Plan was effective in September 1996. Eligible employees may designate not more than 10% of their cash compensation to be deducted each pay period for the purchase of common stock under the Purchase Plan. Participants may purchase not more than 1,000 shares or $25,000 of common stock in any one calendar year. Each January 31 and July 31 shares of common stock are purchased with the employees’ payroll deductions from the immediately preceding six months at a price per share of 85% of the lesser of the market price of the common stock on the purchase date or the market price of the common stock on the date of entry into an offering period. In 201 5 and 201 4, 10,374 and 14,06 8 shares of common stock, respectively, were issued under the Purchase Plan. We issue new shares through our transfer agent upon employee stock purchase. The weighted average per share fair value of the employee’s purchase rights under the Purchase Plan for the rights granted was $6.17, $6.17 and $3.19 for 201 5, 201 4 and 201 3, respectively. 1996 Stock Option/Stock Issuance Plan: We granted stock options under our 1996 Stock Option/Stock Issuance Plan (the 1996 Plan), as amended and restated as of March 1, 2003, until the plan terminated in June 2006. Under this Plan, a total of 3,025,000 shares were authorized for grant. These options have a contractual term of ten years and vest at a rate of 25% annually commencing on the first anniversary of the date of grant. For shares outstanding with graded vesting, our accounting policy is to value the options as one award and recognize the associated expense on a straight-line basis over the vesting period. We issue new shares through our transfer agent upon stock option exercise. In the year ended December 31, 2013, 54,991 options were exercised with a total intrinsic value at exercise date of approximately $0.4 million and 6,500 options were cancelled. In the year ended December 31, 2014, 26,437 options were exercised with a total intrinsic value at exercise date of approximately $0.2 million. In the year ended December 31, 201 5, 49,000 options were exercised with a total intrinsic value at exercise date of approximately $0.3 million. As of December 31, 2015, there are no options remaining under the 1996 Plan. A summary of the activity under the 1996 Plan for the years ended December 31, 201 5, 201 4, and 2013 is as follows:
|  |  |  |  |  |  |  |  | Weighted |  |  |  |
|  |  |  |  |  |  |  |  | Average |  |  |  |
|  |  |  |  |  |  |  |  | Remaining |  |  |  |
|  | Options |  |  |  | Weighted |  | Contractual |  |  |  |
|  | Available |  |  |  | Average |  | Term (in |  | Aggregate |
|  | for Grant |  | Options |  | Exercise Price |  | years) |  | Intrinsic Value |
Outstanding as of December 31, 2012 |  | — |  | 136,928 |  | $ | 8.60 |  | 2.23 |  | $ | 781,692 |
Options exercised |  | — |  | (54,991) |  |  | 7.96 |  |  |  |  |  |
Options cancelled |  | — |  | (6,500) |  |  | 5.01 |  |  |  |  |  |
Outstanding as of December 31, 2013 |  | — |  | 75,437 |  | $ | 9.38 |  | 1.49 |  | $ | 601,991 |
Options exercised |  | — |  | (26,437) |  |  | 9.71 |  |  |  |  |  |
Options cancelled |  | — |  | — |  |  | — |  |  |  |  |  |
Outstanding as of December 31, 2014 |  | — |  | 49,000 |  | $ | 9.20 |  | 0.59 |  | $ | 622,300 |
Options exercised |  | — |  | (49,000) |  |  | 9.20 |  |  |  |  |  |
Options cancelled |  | — |  | — |  |  | — |  |  |  |  |  |
Outstanding as of December 31, 2015 |  | — |  | — |  | $ | — |  | — |  | $ | — |
Vested and expected to vest at: |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2015 |  |  |  | — |  | $ | — |  | — |  | $ | — |
Options exercisable at: |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2013 |  |  |  | 75,437 |  | $ | 9.38 |  | 1.49 |  | $ | 601,991 |
December 31, 2014 |  |  |  | 49,000 |  | $ | 9.20 |  | 0.59 |  | $ | 622,300 |
December 31, 2015 |  |  |  | — |  | $ | — |  | — |  | $ | — |

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51659978&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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