Note 8 - Long-term Debt Obligation (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
	Dec. 31, 2012	Dec. 31, 2012	Jun. 30, 2012
Line of Credit Facility, Current Borrowing Capacity (in Dollars)	$ 50	$ 50
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%	0.10%
LineOfCreditFacilityAdditionalBorrowingCapacity (in Dollars)	50	50
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	100	100
Guarantor Obligations Number of Domestic Subsidiaries	5	5
Line of Credit Facility, Interest Rate During Period	1.30%	1.30%
Line of Credit Facility, Amount Outstanding (in Dollars)	$ 8.0	$ 8.0	$ 0
LIBOR Minimum Spread [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%	1.00%
LIBOR Maximum Spread [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%	2.00%
Prime Rate Minimum Spread [Member]
Debt Instrument, Basis Spread on Variable Rate	0.00%	0.00%
Prime Rate Maximum Spread [Member]
Debt Instrument, Basis Spread on Variable Rate	0.75%	0.75%
Minimum Commitment Fee [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.10%
Maximum Commitment Fee [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.40%