Consolidated Statements Of Income (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Oct. 01, 2011	Oct. 02, 2010	Oct. 01, 2011	Oct. 02, 2010
SALES
Product	$ 54,032	$ 36,725	$ 146,682	$ 107,875
Service	10,775	8,561	30,402	25,385
Total Sales	64,807	45,286	177,084	133,260
COST OF SALES
Product	21,605	12,901	56,527	36,796
Service	6,813	6,002	20,380	17,602
Total Cost of Sales (exclusive of depreciation and amortization, shown separately below)	28,418	18,903	76,907	54,398
GROSS PROFIT	36,389	26,383	100,177	78,862
OPERATING EXPENSES:
Selling	14,696	11,707	44,157	34,969
General and administrative	6,424	7,201	19,931	19,476
Depreciation and amortization	1,711	1,779	5,047	4,834
Research and development	3,591	2,850	11,037	8,836
Total operating expenses	26,422	23,537	80,172	68,115
INCOME FROM OPERATIONS	9,967	2,846	20,005	10,747
OTHER (INCOME) EXPENSE
Interest income	(19)	(38)	(84)	(83)
Other expense (income), net	780	(544)	775	1,800
Interest expense	2	2	33	31
INCOME BEFORE INCOME TAX EXPENSE	9,204	3,426	19,281	8,999
INCOME TAX EXPENSE	2,775	1,098	5,376	2,770
NET INCOME	$ 6,429	$ 2,328	$ 13,905	$ 6,229
NET INCOME PER SHARE - BASIC	$ 0.39	$ 0.14	$ 0.85	$ 0.39
NET INCOME PER SHARE - DILUTED	$ 0.38	$ 0.14	$ 0.83	$ 0.38
Weighted average shares - Basic	16,609,005	16,160,378	16,435,337	16,144,366
Weighted average shares - Diluted	16,849,282	16,270,741	16,788,776	16,292,938