Consolidated Statements of Changes in Stockholders' Equity (USD $)	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Common Stock
Balance at beginning of year	$ 182,054	$ 184,872	$ 182,099
Repurchase and retirement of common stock		1,715,352
Issuance of common stock	120	120	120
Exercise of stock options, vesting of restricted stock units and other	2,032	1,961	2,653
Balance at end of year	184,206	182,054	184,872
Additional Paid-In Capital
Balance at beginning of year	7,559,442	8,712,743	8,060,041
Repurchase and retirement of common stock		(1,710,453)
Issuance of common stock	48,280	37,080	41,200
Exercise of stock options, vesting of restricted stock units and other	746,667	461,695	586,540
Transfers (to) from non-controlling interest	1,469,752
Tax benefit from employee stock transactions	68,832	58,377	24,962
Balance at end of year	9,892,973	7,559,442	8,712,743
Retained Earnings
Balance at beginning of year	8,642,093	9,838,205	8,411,975
Net income	4,392,444	1,478,212	3,876,032
Cash dividends declared	(2,689,743)	(2,674,324)	(2,449,802)
Balance at end of year	10,344,794	8,642,093	9,838,205
Non-controlling Interest in Equity of Subsidiary
Balance at beginning of year	1,005,523	0	0
Net income (loss)	(1,257,940)	(128,178)
Non-controlling interest in acquired business		664,612
Contributions, net	1,995,322	469,089
Balance at end of year	1,742,905	1,005,523	0
Total Stockholders’ Equity	22,164,878	17,389,112	18,735,820
Common Shares
Balance at beginning of year (in Shares)	6,068,470	6,162,389	6,069,976
Repurchase and retirement of common stock (in Shares)		(163,300)
Issuance of common stock (in Shares)	4,000	4,000	4,000
Exercise of stock options, vesting of restricted stock units and other	67,730	65,381	88,413
Balance at end of year (in Shares)	6,140,200	6,068,470	6,162,389
Repurchase and Retirement of Common Stock (Member)
Common Stock
Repurchase and retirement of common stock		$ (4,899)