Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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 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

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