Note 6 - Equity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended
	Jan. 03, 2012	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Jun. 30, 2010
Treasury Stock, Shares, Retired	1,414,379
Stock Issued During Period, Shares, Period Increase (Decrease)	1,414,379
Treasury Stock, Retired, Cost Method, Amount (in Dollars)	$ 7,132
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		423,264	1,199,661	1,088,644	843,870
Restricted Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		423,264	0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in Shares)		933,887	1,199,661