Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Share-Based Compensation (Tables) [Abstract]

Summary of the activity related to stock options granted under the Company's Incentive Plan

	Summary of Stock Options Outstanding
				Weighted		Weighted
				Average		Average
				Exercise		Remaining		Aggregate
	Total			Price per		Contractual		Intrinsic
	Shares			Share		Term (Years)		Value ($)(1)
Outstanding as of December 31, 2010		4,026			14.24
Granted		1,250			15.34
Exercised		(50	)		12.00
Forfeited, canceled or expired		(75	)		17.31
Outstanding as of June 30, 2011		5,151		$	14.48		8.17	$	—
Exercisable as of June 30, 2011		1,644		$	13.06		7.53	$	1,841
Available for issuance as of June 30, 2011		1,995

(1) Aggregate intrinsic value represents the value of the University’s closing stock price on June 30, 2011 ($14.18) in excess of the exercise price multiplied by the number of options outstanding or exercisable.

Share-based Compensation Expense

	2011			2010
Instructional costs and services	$	1,409		$	918
Selling and promotional		149			100
General and administrative		1,572			1,320
Share-based compensation expense included in operating expenses		3,130			2,338
Tax effect of share-based compensation		(1,252	)		(935	)
Share-based compensation expense, net of tax	$	1,878		$	1,403