Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Cash and cash equivalents	$ 29,535	$ 30,343
Short-term investments	50	50
Investment in marketable securities	810	648
Accounts receivable, less allowance for doubtful accounts of $549 and $515, respectively	40,456	37,236
Inventory	10,591	4,698
Prepaid income taxes	2,091	1,988
Prepaid expenses and other	5,294	4,393
Deferred income taxes	3,548	3,431
Total current assets	92,375	82,787
Property and equipment, net	51,761	42,615
Goodwill	75,230	71,637
Intangible assets	13,080	17,187
Other assets	691	609
Total assets	233,137	214,835
Current Liabilities:
Accounts payable	6,147	7,136
Accrued expenses	14,105	16,162
Deferred revenues	13,599	11,670
Total current liabilities	33,851	34,968
Deferred rent	2,450	2,368
Deferred income taxes	4,727	3,703
Long-term debt	21,000	21,000
Other liabilities	1,998	2,141
Total liabilities	64,026	64,180
Commitments and contingencies
Stockholders' Equity:
Preferred stock - $10.00 par value, 500,000 shares authorized, none issued and outstanding
Common stock - $.01 par value, 175,000,000 shares authorized, 60,837,849 and 60,460,782 shares issued, respectively	608	605
Additional paid-in capital	103,487	100,441
Accumulated other comprehensive (loss) income	4,707	(1,545)
Retained earnings	140,238	131,037
Treasury stock, 11,596,966 and 11,589,603 shares at cost, respectively	(79,929)	(79,883)
Total stockholders' equity	169,111	150,655
Total liabilities and stockholders' equity	$ 233,137	$ 214,835