Share-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2012

Share-Based Compensation Plans [Abstract]

Share-Based Compensation Expense

	For the Three Months Ended March 31,
(in thousands)	2012		2011
Restricted stock units	$	5,886	$	4,703
Stock options		—		9
Employee stock purchase plan		262		230
	$	6,148	$	4,942

Summary Of RSU Activity

(in thousands, except weighted-average grant-date fair value)	Shares			Weighted-average grant-date fair value
RSUs unvested at December 31, 2011		3,141		$	12.83
Granted during 2012		683		$	15.48
Vested during 2012		(869	)	$	14.53
Forfeited during 2012		(55	)	$	8.63
RSUs unvested at March 31, 2012		2,900		$	13.02

Summary Of Stock Option Activity

(in thousands, except weighted-average exercise price and contractual term)	Number outstanding			Weighted- average exercise price		Weighted- average remaining contractual term		Aggregate intrinsic value
Balance at December 31, 2011		2,636		$	14.89
Exercised during 2012		(95	)	$	10.08
Forfeited during 2012		(23	)	$	19.96
Balance at March 31, 2012		2,518		$	15.02		2.4	$	6,660
Vested at March 31, 2012		2,518		$	15.02		2.4	$	6,660
Exercisable at March 31, 2012		2,518		$	15.02		2.4	$	6,660