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Note 13 - Share-Based Compensation (Detail) - Restricted Stock Activity (USD $)
1 Months Ended 6 Months Ended
Jun. 30, 2011
Nov. 30, 2012
Restricted Stock [Member]
Nov. 30, 2012
Stock Appreciation Rights (SARs) [Member]
Stock outstanding at May 31, 2012   2,100 87,000
Stock outstanding at May 31, 2012 (in Dollars per share)   $ 78.64 $ 20.59
Granted     29,700
Granted (in Dollars per share) $ 19.85   $ 20.59
Vested   0 0
Vested (in Dollars per share)   $ 0 $ 0
Forfeited   0 (6,600)
Forfeited (in Dollars per share)   $ 0 $ 20.59
Cancelled/Expired     (5,000)
Cancelled/Expired (in Dollars per share)     $ 20.59
Stock outstanding at August 20, 2011   2,100 105,100
Stock outstanding at August 20, 2011 (in Dollars per share)   $ 78.64 $ 20.59