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Note 9 - Stock-based Compensation | 3 Months Ended
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Mar. 31, 2016
Notes to Financial Statements |
Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | 9. Stock-Based Compensation For the three months ended March 31, 2016 and 2015, the Company’s net income, as reported, includes $3.0 million and $2.8 million, respectively, of stock-based compensation costs and $1.1 million of income tax benefits related to the stock-based compensation plans in each of the periods. The Company estimates the fair value of stock options using the Black-Scholes valuation model. Key assumptions used to estimate the fair value of stock options include the exercise price of the award, the expected option term, the expected volatility of the Company’s stock price, the risk-free interest rate over the options’ expected term and the annual dividend yield. The Company uses the fair value of the common stock on the date of award to measure compensation cost for restricted stock unit awards. Compensation cost is recognized over the vesting period of the award using the straight line method. During the three months ended March 31, 2016 and 2015, the Company granted 337,175 and 314,520 restricted stock units, respectively. There were no stock options granted during the three months ended March 31, 2016 and 2015. The 2014 Omnibus Incentive Plan (“2014 Omnibus Plan”) became effective on May 20, 2014 after adoption by the Board of Directors and approval by the stockholders. The 2014 Omnibus Plan authorizes the Compensation Committee of the Company’s Board of Directors (the “Compensation Committee”) to grant a variety of equity compensation awards as well as long-term and annual cash incentive awards, all of which can, but need not, be structured so as to comply with Section 162(m) of the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”). The 2014 Omnibus Plan authorizes the issuance of 1,100,000 shares. To the extent that an award under the 2014 Omnibus Plan is cancelled, expired, forfeited, settled in cash, settled by issuance of fewer shares than the number underlying the award, or otherwise terminated without delivery of shares to a participant in payment of the exercise price or taxes relating to an award, the shares retained by or returned to the Company will be available for future issuance under the 2014 Omnibus Plan. No further awards may be granted under the Company’s 2005 Omnibus Incentive Plan, 1996 Stock Option Incentive Plan, and 1996 Restricted Stock Incentive Plan (the “Prior Plans”). At March 31, 2016, there were 473,040 shares available for delivery in connection with awards under the 2014 Omnibus Plan. To satisfy stock option exercises or fund restricted stock and restricted stock unit awards, shares are issued from treasury stock, if available; otherwise new shares are issued. The exercise price per share of a stock option grant may not be less than the fair market value of the common stock of the Company, as defined in the Omnibus Plan, on the date of grant and may not be re-priced without the approval of the Company’s stockholders. Options, stock appreciation rights, restricted stock, restricted stock units and other stock based awards granted under the Omnibus Plan are generally subject to a minimum vesting period of three years with stock options having a 10-year maximum contractual term. Other awards do not have a contractual term of expiration. The Compensation Committee is authorized to grant awards that vest upon a participant’s retirement. These amounts are included in stock-based compensation expense at the time of the participant’s retirement eligibility. The following table summarizes the Company’s restricted stock unit (“RSU”) awards under the 2014 Omnibus Plan and the Prior Plans in the aggregate at or for the three months ended March 31, 2016:
|  | Shares |  | Weighted-Average Grant-Date Fair Value
Non-vested at December 31, 2015 |  |  | 415,909 |  |  | $ | 18.10 |
Granted |  |  | 337,175 |  |  |  | 19.85 |
Vested |  |  | (235,335 | ) |  |  | 18.71 |
Forfeited |  |  | (900 | ) |  |  | 19.43 |
Non-vested at March 31, 2016 |  |  | 516,849 |  |  | $ | 18.97 |
Vested but unissued at March 31, 2016 |  |  | 280,450 |  |  | $ | 19.28 |
As of March 31, 2016, there was $9.1 million of total unrecognized compensation cost related to non-vested full value awards granted under the Omnibus Plan. That cost is expected to be recognized over a weighted-average period of 3.6 years. The total fair value of awards vested for the three months ended March 31, 2016 and 2015 were $4.8 million and $4.1 million, respectively. The vested but unissued RSU awards consist of awards made to employees and directors who are eligible for retirement. According to the terms of these awards, which provide for vesting upon retirement, these employees and directors have no risk of forfeiture. These shares will be issued at the original contractual vesting and settlement dates. The following table summarizes certain information regarding the stock option awards under the Omnibus Plan and the Prior Plans in the aggregate at or for the three months ended March 31, 2016:
|  | Shares |  | Weighted- Average Exercise Price |  | Weighted-Average Remaining Contractual Term |  | Aggregate Intrinsic Value ($000) *
Outstanding at December 31, 2015 |  |  | 109,130 |  |  | $ | 16.14 |  |  |  |  |  |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | (18,200 | ) |  |  | 19.03 |  |  |  |  |  |  |  |  |
Forfeited |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2016 |  |  | 90,930 |  |  | $ | 15.56 |  |  |  | 2.1 |  |  | $ | 551 |
* The intrinsic value of a stock option is the difference between the market value of the underlying stock and the exercise price of the option. Cash proceeds, fair value received, tax benefits, and intrinsic value related to stock options exercised, and the weighted average grant date fair value for options granted, during the three months ended March 31, 2016 and 2015 are provided in the following table:
|  | For the three months ended March 31,
(In thousands) |  | 2016 |  | 2015
Proceeds from stock options exercised |  | $ | 19 |  |  | $ | - |
Fair value of shares received upon exercised of stock options |  |  | 328 |  |  |  | 20 |
Tax (expense) benefit related to stock options exercised |  |  | (16 | ) |  |  | 1 |
Intrinsic value of stock options exercised |  |  | 43 |  |  |  | 2 |
Phantom Stock Plan: The Company maintains a non-qualified phantom stock plan as a supplement to its profit sharing plan for officers who have achieved the designated level and completed one year of service. Prior to January 1, 2015, the Plan included officers at a level that are no longer qualified to participate, however those that were eligible remain eligible to participate in the Plan. Awards are made under this plan on certain compensation not eligible for awards made under the profit sharing plan, due to the terms of the profit sharing plan and the Internal Revenue Code. Employees receive awards under this plan proportionate to the amount they would have received under the profit sharing plan, but for limits imposed by the profit sharing plan and the Internal Revenue Code. The awards are made as cash awards, and then converted to common stock equivalents (phantom shares) at the then current fair value of the Company’s common stock. Dividends are credited to each employee’s account in the form of additional phantom shares each time the Company pays a dividend on its common stock. In the event of a change of control (as defined in this plan), an employee’s interest is converted to a fixed dollar amount and deemed to be invested in the same manner as his interest in the Bank’s non-qualified deferred compensation plan. Employees vest under this plan 20% per year for the first 5 years of employment and are 100% vested thereafter. Employees also become 100% vested upon a change of control. Employees receive their vested interest in this plan in the form of a cash lump sum payment or installments, as elected by the employee, after termination of employment. The Company adjusts its liability under this plan to the fair value of the shares at the end of each period. The following table summarizes the Phantom Stock Plan at or for the three months ended March 31, 2016:
Phantom Stock Plan |  | Shares |  | Fair Value
Outstanding at December 31, 2015 |  |  | 79,440 |  |  | $ | 21.64 |
Granted |  |  | 10,150 |  |  |  | 19.88 |
Forfeited |  |  | - |  |  |  | - |
Distributions |  |  | (1,362 | ) |  |  | 20.28 |
Outstanding at March 31, 2016 |  |  | 88,228 |  |  | $ | 21.62 |
Vested at March 31, 2016 |  |  | 87,826 |  |  | $ | 21.62 |
The Company recorded stock-based compensation expense for the Phantom Stock Plan of $29,000 and $9,000 for the three months ended March 31, 2016 and 2015, respectively. The total fair value of the distributions from the Phantom Stock Plan was $28,000 and $8,000 for the three months ended March 31, 2016 and 2015, respectively.

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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=65895303&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=68057994&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: 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 5: 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 6: 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 + Details
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