Stock Options and Other Equity-Based Incentive Instruments (Tables)

6 Months Ended

Jun. 30, 2016

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

Stock option activity during the six months ended June 30, 2016 is summarized in the following table:


					Weighted		Weighted
					Average		Average Fair
	Number			Option Price	Exercise		Value on
	of Shares			per Share	Price		Date of Grant
Outstanding at December 31, 2015		948,350		$12.63 to $25.91	$	17.94
Options granted		—		— to —		—		—
Options exercised		(127,200	)	$14.76 to $25.91	$	22.12
Options forfeited		(6,000	)	$23.21 to $23.21	$	23.21
Outstanding at June 30, 2016		815,150		$12.63 to $23.21	$	17.25

Summary of Options Outstanding

The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of June 30, 2016:


	Currently		Currently Not		Total
	Exercisable		Exercisable		Outstanding
Number of options		694,350		120,800		815,150
Weighted average exercise price	$	17.24	$	17.28	$	17.25
Intrinsic value (in thousands)	$	7,191	$	1,247	$	8,438
Weighted average remaining contractual term (yrs.)		4.4		6.4		4.7

Restricted Stock Unit (RSU) Activity

Restricted stock unit (RSU) activity is summarized in the following table for the dates indicated:


	Service Condition Vesting RSUs					Market Plus Service Condition Vesting RSUs
				Weighted				Weighted
				Average Fair				Average Fair
	Number			Value on		Number		Value on
	of RSUs			Date of Grant		of RSUs		Date of Grant
Outstanding at December 31, 2015		46,286					32,097
RSUs granted		36,542		$	26.60		18,753	$	24.39
RSUs added through dividend credits		641					—
RSUs released		(16,948	)				—
RSUs forfeited/expired		(4	)				—
Outstanding at June 30, 2016		66,517					50,850