Condensed Consolidated Balance Sheets (USD $)	Feb. 28, 2013	Feb. 29, 2012
Current assets:
Cash and cash equivalents	$ 55,597,751	$ 143,302,666
Accounts receivable, net of allowance for doubtful accounts of $1,000,000 and $898,000 in 2013 and 2012, respectively	97,857,193	74,647,303
Inventories	82,330,926	60,281,130
Costs and estimated earnings in excess of billings on uncompleted contracts	12,878,068	14,038,161
Deferred income tax assets	7,615,525	7,654,781
Prepaid expenses and other	6,152,476	2,811,858
Total current assets	262,431,939	302,735,899
Property, plant, and equipment, at cost:
Land	16,007,166	13,304,574
Buildings and structures	101,109,332	91,024,990
Machinery and equipment	133,636,597	119,656,204
Furniture, fixtures, software and computers	16,401,547	14,562,584
Automotive equipment	2,219,829	1,831,698
Construction in progress	5,555,208	2,623,589
Gross property, plant, and equipment	274,929,679	243,003,639
Less accumulated depreciation	(120,453,459)	(107,176,936)
Net property, plant, and equipment	154,476,220	135,826,703
Goodwill	171,886,270	121,383,863
Intangibles and other assets	105,410,385	46,828,100
Total Assets	694,204,814	606,774,565
Current Liabilities:
Accounts payable	28,921,539	24,401,194
Income tax payable	568,722	998,496
Accrued salaries and wages	11,013,779	7,988,594
Other accrued liabilities	14,811,126	12,749,283
Customer advance payment	39,168,672	11,267,525
Profit sharing	8,360,000	5,300,000
Billings in excess of costs and estimated earnings on uncompleted contracts	1,769,656	987,771
Long-term debt due within one year	14,285,714	14,285,714
Total Current Liabilities	118,899,208	77,978,577
Long-term accrued liability due after one year	8,539,278	0
Long-term debt due after one year	196,428,571	210,714,286
Deferred income tax liabilities	36,403,283	30,472,937
Total liabilities	360,270,340	319,165,800
Commitments and Contingencies
Shareholders' Equity:
Common Stock, $1 par value; 50,000,000 shares authorized; 25,376,967 shares issued at February 28, 2013 and 25,218,320 at February 29, 2012	25,376,967	25,218,320
Capital in excess of par value	17,653,912	14,200,811
Retained earnings	294,092,945	247,059,938
Accumulated other comprehensive income (loss)	(3,189,350)	1,303,974
Less Common Stock held in treasury, at cost (0 shares at February 28, 2013 and 53,090 shares at February 29, 2012)	0	(174,278)
Total shareholders’ equity	333,934,474	287,608,765
Total liabilities and Shareholders’ Equity	$ 694,204,814	$ 606,774,565