Stockholders' Equity and Equity Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Summary of all stock award activity

A summary of the stock award activity is as follows:

	Quarter Ended March 31, 2016
	Stock Awards		Weighted Average Award Date Fair Value
Outstanding at January 1, 2016	1,275,707		$	19.60
Restricted shares awarded	—		—
Restricted stock units awarded	274,058		18.20
Performance stock units awarded	234,776		18.24
Restricted shares distributed	(143,993	)	23.65
Restricted stock units distributed	(9,733	)	21.58
Performance stock units distributed	—		—
Restricted shares forfeited	(14,528	)	23.40
Restricted stock units forfeited	(45,340	)	17.33
Performance stock units forfeited	(41,484	)	18.68
Outstanding at March 31, 2016	1,529,463		$	18.80

Summary of all deferred stock unit activity

A summary of deferred stock unit activity is as follows:

	Quarter Ended March 31, 2016
	Deferred Stock Units	Weighted Average Award Date Fair Value
Outstanding at January 1, 2016	247,219	$	19.92
Awarded	1,062	19.07
Distributed	—	—
Outstanding at March 31, 2016	248,281	$	19.91

Summary of stock option activity

A summary of stock option activity is as follows:

	Quarter Ended March 31, 2016
	Shares		Weighted Average Exercise Price
Outstanding at January 1, 2016	288,383		$	21.78
Granted	—		—
Exercised	(18,193	)	16.80
Canceled/Expired	—		—
Outstanding at March 31, 2016	270,190		$	22.06
Exercisable at March 31, 2016	270,190		$	22.06

Financial data for stock option exercises

Financial data for stock option exercises are summarized as follows (in thousands):

	Quarters Ended March 31,
	2016		2015
Amount collected from stock option exercises	$	306	$	1,299
Total intrinsic value of stock option exercises	352		273
Tax shortfall of stock option exercises recorded in additional paid-in-capital	18		100
Aggregate intrinsic value of outstanding stock options	320		543
Aggregate intrinsic value of exercisable stock options	320		543