Consolidated Balance Sheets (USD $) In Thousands	12 Months Ended
	May 28, 2011	May 29, 2010
Current assets:
Cash and cash equivalents	$ 139,624	$ 130,659
Short-term investments	5,249	10,246
Trade accounts receivable, net of allowance for doubtful accounts of $4,860 and $5,193 as of May 28, 2011 and May 29, 2010, respectively	87,162	73,936
Prepaid expenses and other current assets	5,818	4,698
Income taxes receivable	4,059	4,575
Deferred income taxes	7,962	7,107
Total current assets	249,874	231,221
Goodwill	176,475	172,632
Intangible assets, net	7,920	12,425
Property and equipment, net	26,389	29,354
Deferred income taxes	14,400	25,846
Other assets	1,339	1,722
Total assets	476,397	473,200
Current liabilities:
Accounts payable and accrued expenses	19,167	14,606
Accrued salaries and related obligations	41,340	37,949
Other liabilities	6,692	5,194
Total current liabilities	67,199	57,749
Other long-term liabilities, including estimated contingent consideration of $33,940 and $59,792 as of May 28, 2011 and May 29, 2010, respectively	36,472	62,210
Total liabilities	103,671	119,959
Commitments and contingencies (Note 14)
Stockholders' equity:
Preferred stock, $0.01 par value, 5,000 shares authorized; zero shares issued and outstanding	0	0
Common stock, $0.01 par value, 70,000 shares authorized; 55,021 and 54,267 shares issued, and 45,389 and 46,265 shares outstanding as of May 28, 2011 and May 29, 2010, respectively	550	543
Additional paid-in capital	324,492	306,413
Accumulated other comprehensive gain (loss)	3,442	(4,584)
Retained earnings	248,983	232,034
Treasury stock at cost, 9,632 and 8,002 shares at May 28, 2011 and May 29, 2010, respectively	(204,741)	(181,165)
Total stockholders' equity	372,726	353,241
Total liabilities and stockholders' equity	$ 476,397	$ 473,200