Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 26,853	$ 19,617
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,684	7,384
Stock-based compensation	5,372	4,051
Provision for doubtful accounts	940	702
Deferred income tax provision	996	984
Changes in:
Accounts receivable	(5,498)	(8,708)
Inventories	(2,367)	(6,599)
Prepaid expenses and other current assets	(2,372)	(3,965)
Other assets	574	939
Accounts payable	(1,043)	1,892
Accrued expenses	(4,535)	(7,181)
Income taxes payable	(1,675)	(2,150)
Deferred tuition revenue	2,990	4,779
Deferred rent	40	177
Gift certificate liability	(635)	(183)
Net cash provided by operating activities	27,324	11,739
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(3,450)	(3,182)
Acquisitions, net of cash acquired	(2,357)	0
Post-closing working capital adjustments related to acquisition	0	4,013
Net cash (used in) provided by investing activities	(5,807)	831
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of treasury shares	(6,509)	(1,111)
Payments of long-term debt	(25,000)	(23,000)
Proceeds from share option exercises	2,655	1,569
Net cash used in financing activities	(28,854)	(22,542)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	(733)	(57)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(8,070)	(10,029)
CASH AND CASH EQUIVALENTS, Beginning of period	61,731	52,851
CASH AND CASH EQUIVALENTS, End of period	53,661	42,822
Cash paid during the period for:
Interest	234	1,142
Income taxes	$ 3,467	$ 3,637