Long-Term Debt (Details Textuals) (USD $) In Millions, unless otherwise specified	6 Months Ended	9 Months Ended
	Oct. 31, 2011	Jun. 30, 2011
Long-Term Debt (Textuals) [Abstract]
Number of banks involved in line of credit facility		5
Revolving credit facility		$ 175
Line of credit potential maximum		225
Term loan outstanding		17.5
Interest rate description of credit agreement, minimum	interest rate of LIBOR plus 250 basis points or the bank’s base rate plus 150 basis points
Interest rate description		Eurodollar rate plus 200 to 275 basis points or the bank’s base rate plus 100 to 175 basis points
Commitment fee description		commitment fee of 37.5 to 50 basis points depending on our leverage ratio calculated at the end of each quarter.
Deferred financing cost written off		0.1
Deferred financing costs included in other assets		$ 2.3
Deferred financing cost amortizable period		4 years
Credit agreement initiation date		05-10-2011
Credit agreement expiration date		05-10-2015
Debt related commitment fee	Commitment fees of 50 base points