Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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

A summary of our stock option activity for 2015 and 2014 is as follows (in thousands, except weighted-average exercise price and weighted-average remaining contractual term):



	Stock Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding at December 31, 2013	1,031		$	17.28
Granted	—		$	—
Exercised	(177	)	$	16.12
Expired	—		$	—
Forfeited/Canceled	(9	)	$	15.98
Outstanding at December 31, 2014	845		$	17.54	2.7	$	26,400
Granted	—		$	—
Exercised	(166	)	$	16.13
Expired	—		$	—
Forfeited/Canceled	(11	)	$	15.98
Outstanding at December 31, 2015	668		$	17.91	1.7	$	24,768
Exercisable at December 31, 2015	552		$	17.70	1.7	$	20,601
Vested and expected to vest at December 31, 2015	668		$	17.91	1.7	$	24,768

Summary of options outstanding

The following table summarizes information about the options outstanding at December 31, 2015 (in thousands, except per share amounts and the weighted-average remaining contractual life):



Options Outstanding				Options Exercisable
Exercise Price	Outstanding	Weighted-Avg. Remaining Contractual Life	Weighted-Avg. Exercise Price	Exercisable	Weighted-Avg. Exercise Price
$15.98 - $18.94	667,851	1.7	$17.91	552,294	$17.70

Summary of nonvested stock activity

A summary of our non-vested stock activity for 2015 and 2014 is as follows (in thousands, except weighted-average fair value per share):



	Shares		Grant Date Weighted- Average Fair Value Per Share
Outstanding at December 31, 2013	1,183		$	21.56
Granted	172		$	40.21
Vested	(512	)	$	21.03
Forfeited/Canceled	(21	)	$	22.40
Outstanding at December 31, 2014	822		$	25.77
Granted	131		$	53.76
Vested	(484	)	$	22.40
Forfeited/Canceled	(52	)	$	26.77
Outstanding at December 31, 2015	417		$	38.28

Schedule of unvested restricted stock units roll forward

A summary of our RSU award activities for 2015 and 2014 is as follows (in thousands, except weighted-average fair value per share):



	Units		Grant Date Weighted- Average Fair Value Per Unit
Outstanding at December 31, 2013	562		$	23.54
Granted	253		$	39.05
Vested/Paid out	(192	)	$	21.04
Performance Share Units Adjustment ⁽¹⁾	62		$	18.94
Forfeited/Canceled	—		$	—
Outstanding at December 31, 2014	685		$	29.60
Granted	250		$	50.37
Vested/Paid out	(261	)	$	26.15
Performance Share Units Adjustment ⁽¹⁾	73		$	27.78
Forfeited/Canceled	—		$	—
Outstanding at December 31, 2015	747		$	37.91

____________________________


⁽¹⁾	The Performance Share Units Adjustment represent the difference of restricted stock units earned above or below the units that were initially granted and what were actually earned at the end of each performance period.

Summary of restricted stock units (RSUs) activity

A summary of our RSU award activities for 2015 and 2014 is as follows (in thousands, except weighted-average fair value per share):



	Units		Grant Date Weighted- Average Fair Value Per Unit
Outstanding at December 31, 2013	562		$	23.54
Granted	253		$	39.05
Vested/Paid out	(192	)	$	21.04
Performance Share Units Adjustment ⁽¹⁾	62		$	18.94
Forfeited/Canceled	—		$	—
Outstanding at December 31, 2014	685		$	29.60
Granted	250		$	50.37
Vested/Paid out	(261	)	$	26.15
Performance Share Units Adjustment ⁽¹⁾	73		$	27.78
Forfeited/Canceled	—		$	—
Outstanding at December 31, 2015	747		$	37.91

____________________________


⁽¹⁾	The Performance Share Units Adjustment represent the difference of restricted stock units earned above or below the units that were initially granted and what were actually earned at the end of each performance period.