Equity Awards (Tables)

6 Months Ended

Jun. 30, 2012

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

Schedule of Share-based Compensation, Stock Options, Activity

Information related to stock options at June 30, 2012 is as follows:

	Number of Options		Weighted Average Option Price		Average  Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2012	1,271,149		$	13.29
Exercised	(486,763	)	11.36
Cancelled	(2,500	)	23.00
Expired	(15,308	)	20.00
Outstanding at June 30, 2012	766,578		$	14.35	4.7	$	5,644,432

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

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Information related to restricted shares at June 30, 2012 is as follows:

	Number of Unvested Restricted Shares		Weighted Average Grant Date Fair Value		Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2012	332,043		$	16.25
Granted	473,564		24.30
Vested	(131,635	)	16.20
Cancelled	(818	)	24.33
Outstanding at June 30, 2012	673,154		$	21.82	2.0	$	13,530,395