Consolidated Income Statements (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidated Income Statements [Abstract]
Net revenue	$ 119,260	$ 103,118	$ 236,391	$ 204,827
Costs and expenses:
Instructional costs and services	53,406	46,354	104,230	95,229
Selling and promotional, including $594 and $2 for the three months ended June 30, 2012 and 2011, respectively, and $1041 and $4,03 for the six months ended June 30, 2012 and 2011, respectively, to related parties	32,755	27,709	67,314	57,541
General and administrative	7,701	7,038	15,245	13,870
Total costs and expenses	93,862	81,101	186,789	166,640
Operating income	25,398	22,017	49,602	38,187
Interest expense	(78)	(29)	(285)	(136)
Interest income	26	26	36	58
Income before income taxes	25,346	22,014	49,353	38,109
Income tax expense	9,748	9,141	19,286	15,755
Net income	$ 15,598	$ 12,873	$ 30,067	$ 22,354
Net income per common share:
Basic	$ 0.35	$ 0.29	$ 0.68	$ 0.50
Diluted	$ 0.35	$ 0.29	$ 0.67	$ 0.49
Shares used in computing net income per common share:
Basic	44,447	44,658	44,410	45,122
Diluted	45,169	45,018	45,161	45,551

Costs directly attributable to educational services, including salaries and benefits for full-time faculty, administrators and academic advisors, and costs associated with adjunct faculty. Also includes costs for educational supplies such as books, costs associated with academic records and graduation, costs associated with collections from our students such as bad debt expense, and other university services such as evaluating transcripts.

No definition available.