Note 5 - Stock-Based Compensation

6 Months Ended

Jun. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

5. Stock-Based Compensation

Under the Company’s equity incentive plans, directors and eligible employees may be granted incentive or non-statutory stock options and/or restricted stock units, or awarded non-vested stock.As of June 30, 2015, the only options granted by the Company were non-statutory stock options to selected Bank officers and non-employee directors at exercise prices equal to the fair market value of a share of the Company’s common stock on the date of grant. Such options have a maximum ten-year term and vest in 20% annual increments (subject to early termination in certain events) except certain options granted to the Chief Executive Officer of the Company in 2005 and 2008. If such options expire or terminate without having been exercised, any shares not purchased will again be available for future grants or awards. There were no options granted during the first six months of 2015 or during 2014.

Option compensation expense was zero for the three months and for the six months ended June 30, 2015, and June 30, 2014. Stock-based compensation was fully recognized over the requisite service period for all awards. Stock options covering 73,350 shares were exercised in the six months ended June 30, 2015, compared to zero in the six months ended June 30, 2014. Cash received totaled $1.7 million and the aggregate intrinsic value totaled $556,000 from the exercise of stock options during the first six months ended June 30, 2015. The table below summarizes stock option activity for the periods indicated:

						Weighted-average		Aggregate
				Weighted-average		Remaining Contractual		Intrinsic
	Shares			Exercise Price		Life (in years)		Value (in thousands)
Balance, December 31, 2014		2,332,904		$	32.34		1.2	$	1,388
Exercised		(3,750	)		23.37
Forfeited		(808,670	)		35.63
Balance, March 31, 2015		1,520,484		$	30.62		1.6	$	3,156
Exercised		(69,600	)		23.37
Forfeited		(267,884	)		33.99
Balance, June 30, 2015		1,183,000		$	30.37		1.5	$	5,010
Exercisable, June 30, 2015		1,183,000		$	30.37		1.5	$	5,010

In addition to stock options, the Company also grants restricted stock units to eligible employees which vest subject to continued employment at the vesting dates.

The Company granted restricted stock units for 72,900 shares at an average closing price of $28.11 per share in the first six months of 2015 compared to 17,601 shares at an average closing price of $24.66 per share in 2014. The restricted stock units granted are scheduled to vest two years from grant date for 2014 grants and to vest three years from grant date for 2015 grants.

The Company granted performance share unit awards in which the number of units earned is calculated based on the relative total shareholder return (“TSR”) of the Company’s common stock as compared to the TSR of the KBW Regional Banking Index. In addition, the Company granted performance share unit awards in which the number of units earned is determined by comparison to the targeted EPS as defined in the award for the next three years. In December 2014, the Company granted performance TSR restricted stock units for 60,456 shares and performance EPS restricted stock units for 57,642 shares to six executive officers. Both the performance TSR and performance EPS units awarded in 2014 are scheduled to vest at December 31, 2017.

The following table presents restricted stock unit activity from December 31, 2014, to June 30, 2015:

	Units
Balance at December 31, 2014		386,465
Granted		72,900
Vested		(24,892	)
Forfeited		(7,265	)
Balance at June 30, 2015		427,208

The compensation expense recorded for restricted stock units was $1.2 million for the three months ended June 30, 2015, compared to $1.0 million in the same period a year ago. For the six months ended June 30, compensation expense recorded related to the restricted stock units was $2.2 million in 2015 and $2.0 million in 2014. Unrecognized stock-based compensation expense related to restricted stock units was $6.3 million at June 30, 2015, and is expected to be recognized over the next 2.2 years.

At June 30, 2015, 3,562,168 shares were available under the Company’s 2005 Incentive Plan (as Amended and Restated) for future grants.

The following table summarizes the tax benefit (short-fall) from share-based payment arrangements:

	Three months ended June 30,						Six months ended June 30,
(Dollars in thousands)	2015			2014			2015			2014
Short-fall of tax deductions in excess of grant-date fair value	$	(1,224	)	$	50		$	(5,619	)	$	(1,177	)
Benefit of tax deductions on grant-date fair value		1,554			(50	)		6,146			1,177
Total benefit of tax deductions	$	330		$	-		$	527		$	-