Consolidated Condensed Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Nov. 30, 2011	Feb. 28, 2011
Consolidated Condensed Balance Sheets
Receivables - principally trade, allowances (in dollars)	$ 5,414	$ 4,148
Property and equipment, accumulated depreciation (in dollars)	71,342	65,428
Other intangible assets, accumulated amortization (in dollars)	48,645	36,083
Other assets, accumulated amortization (in dollars)	$ 3,580	$ 4,096
Cumulative preferred stock, non-voting, par (in dollars per share)	$ 1.00	$ 1.00
Cumulative preferred stock, non-voting, Authorized shares	2,000,000	2,000,000
Cumulative preferred stock, non-voting, issued shares	0	0
Common stock, par (in dollars per share)	$ 0.10	$ 0.10
Common stock, Authorized shares	50,000,000	50,000,000
Common stock, shares issued	31,605,993	30,838,860
Common stock, shares outstanding	31,605,993	30,838,860