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Note E - Note Receivable - Related Party (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 2 Months Ended 7 Months Ended 11 Months Ended 21 Months Ended 30 Months Ended 34 Months Ended 54 Months Ended
Jul. 12, 2010
Dec. 31, 2011
May 31, 2011
Mar. 31, 2009
Sep. 30, 2011
May 03, 2010
Dec. 31, 2011
Dec. 31, 2010
Jun. 25, 2007
May 03, 2010
Stock Split A (Member)
May 31, 2011
Stock Split B (Member)
May 31, 2010
Stock Split B (Member)
Notes Receivable, Related Parties, Noncurrent (in Dollars)   $ 4,090         $ 4,090 $ 3,849 $ 3,000      
Related Party Transaction, Rate       8.00% 6.00%              
Interest Income Related Party (in Dollars)             1,090          
Stock Split Conversion Ratio                   three-for-two three-for-two three-for-two
Related Party Shares Pledged As Collateral 765,000 315,000 210,000     510,000            
Shares Released Related Party Transaction 555,000                      
Market Value Shares Pledged As Collateral Related Party (in Dollars) $ 6,798 $ 10,868         $ 10,868