The following table summarizes information about stock options outstanding at December 31, 2013:


Options Outstanding							Options Exercisable
Exercise Price	Number Outstanding		Weighted Average Remaining Contractual Life (years)		Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$22.06		12,000		1.0	$	22.06		—	$	22.06
$18.48		610,945		4.2	$	18.48		422,945	$	18.48

Totals		622,945		4.1	$	18.55		422,945	$	18.48

A summary of stock option activity for the years ended December 31, 2013, 2012 and 2011 is as follows:


Stock Options	Shares Under Option			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term *(in years)*		Aggregate Intrinsic Value *(in thousands)*
Outstanding at January 1, 2011		1,875,170		$	17.53		5.4	$	17,147

Granted		—		$	—
Exercised		(52,589	)	$	18.48
Forfeited		(438,044	)	$	17.28
Expired		—		$	—

Outstanding at December 31, 2011		1,384,537		$	17.58		4.4	$	14,587

Granted		—		$	—
Exercised		(645,745	)	$	16.64
Forfeited		—		$	—
Expired		—		$	—

Outstanding at December 31, 2012		738,792		$	18.39		4.9	$	8,891

Granted		—		$	—
Exercised		(115,847	)	$	17.56
Forfeited		—		$	—
Expired		—		$	—

Outstanding at December 31, 2013		622,945		$	18.55		4.1	$	7,289


Ending vested and expected to vest at December 31, 2013		622,945		$	18.55		4.1	$	7,289
Exercisable at December 31, 2013		422,945		$	18.48		4.2	$	5,460
Exercisable at December 31, 2012		162,792		$	17.82		4.0	$	1,243
Exercisable at December 31, 2011		396,985		$	18.16		5.4	$	1,774

A summary of PSP activity for the years ended December 31, 2013, 2012 and 2011 is as follows:


	Weighted- Average Grant Date Fair Value		Granted Shares			Awarded Shares			Shares Not Yet Awarded
Outstanding at January 1, 2011	$	7.32		5,791,854			3,391,519			2,400,335

Granted	$	—		—			—			—
Awarded	$	9.56		—			447,154			(447,154	)
Vested	$	6.01		(106,490	)		(106,490	)		—
Forfeited	$	9.48		(753,552	)		(386,914	)		(366,638	)

Outstanding at December 31, 2011	$	8.08		4,931,812			3,345,269			1,586,543

Granted	$	—		—			—			—
Awarded	$	8.09		—			7,743			(7,743	)
Vested	$	3.29		(877,224	)		(877,224	)		—
Forfeited	$	13.06		(363,566	)		(81,283	)		(282,283	)

Outstanding at December 31, 2012	$	8.72		3,691,022			2,394,505			1,296,517

Granted	$	—		—			—			—
Awarded	$	10.25		—			122,021			(122,021	)
Vested	$	4.01		(119,364	)		(119,364	)		—
Forfeited	$	8.73		(1,200,371	)		(101,310	)		(1,099,061	)

Outstanding at December 31, 2013	$	8.62		2,371,287			2,295,852			75,435

A summary of SIP activity for the years ended December 31, 2013, 2012 and 2011 is as follows:


	Weighted- Average Grant Date Fair Value		Granted Shares			Awarded Shares			Shares Not Yet Awarded
Outstanding at January 1, 2011	$	12.62		192,245			38,449			153,796

Granted	$	23.94		2,375,892			—			2,375,892
Awarded	$	11.41		—			(1,041	)		1,041
Vested	$	—		—			—			—
Forfeited	$	23.94		(90,080	)		—			(90,080	)

Outstanding at December 31, 2011	$	23.06		2,478,057			37,408			2,440,649

Granted	$	22.59		814,545			—			814,545
Awarded	$	—		—			—			—
Vested	$	—		—			—			—
Forfeited	$	23.62		(135,291	)		—			(135,291	)

Outstanding at December 31, 2012	$	22.91		3,157,311			37,408			3,119,903

Granted	$	31.95		3,719,974			—			3,719,974
Awarded	$	30.71		—			966,215			(966,215	)
Vested	$	—		—			—			—
Forfeited	$	23.88		(271,184	)		(7,906	)		(263,278	)

Outstanding at December 31, 2013	$	27.96		6,606,101			995,717			5,610,384

The non-cash stock-based compensation expense for the years ended December 31 is as follows:


*(in thousands)*	2013		2012		2011
Stock Incentive Plan	$	15,934	$	9,288	$	5,320
Employee Stock Purchase Plan		3,538		2,856		2,126
Performance Stock Plan		2,310		2,612		2,661
Incentive Stock Option Plan		821		1,109		1,087

Total	$	22,603	$	15,865	$	11,194