Consolidated Income Statements (unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Aug. 26, 2011	Aug. 27, 2010	Aug. 26, 2011	Aug. 27, 2010
Consolidated Income Statements (unaudited) [Abstract]
Net sales	$ 15,851	$ 13,244	$ 32,125	$ 25,365
Cost of goods sold	9,932	8,450	19,708	15,441
Gross profit	5,919	4,794	12,417	9,924
Operating expenses:
Selling and marketing	1,336	1,020	2,627	2,122
General and administrative	1,788	1,623	3,875	3,086
Research and development	136	240	381	564
Total Operating expenses	3,260	2,883	6,883	5,772
Operating income	2,659	1,911	5,534	4,152
Other expenses:
Interest expense, net	207	189	357	417
Other (income) expense, net	(24)	56	84	128
Total Other expenses	183	245	441	545
Income before income taxes	2,476	1,666	5,093	3,607
Provision for income taxes	952	0	1,944	0
Net income	1,524	1,666	3,149	3,607
Less: Income attributable to non-controlling interest	(2)	0	(18)	(5)
Net income attributable to Environmental Tectonics Corporation	1,522	1,666	3,131	3,602
Preferred Stock dividend	(552)	(568)	(1,104)	(1,145)
Income attributable to common and participating shareholders	$ 970	$ 1,098	$ 2,027	$ 2,457
Distributed earnings per share:
Common (in dollars per share)	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Preferred (in dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.10
Undistributed earnings per share:
Common (in dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.12
Preferred (in dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.12
Diluted earnings per share (in dollars per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.12
Basic weighted average common shares:
Common weighted average number of shares (in shares)	9,106	9,090	9,106	9,088
Participating preferred shares (in shares)	11,095	11,475	11,095	11,555
Total weighted average number of shares (in shares)	20,201	20,565	20,201	20,643
Diluted weighted average common shares:
Basic common shares (in shares)	20,201	20,565	20,201	20,643
Dilutive effect of stock warrants and options (in shares)	294	360	305	361
Total number of shares (in shares)	20,495	20,925	20,506	21,004

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