Note 2 - Cash, Cash Equivalents and Investments (Details) (USD $)
11 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2009
Dec. 31, 2011
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Auction Rate Securities, Noncurrent $ 9,860,000 $ 9,860,000 $ 11,755,000   $ 13,675,000
Auction Rate Securities, Maturity     34 years    
Available-for-sale Securities, Gross Realized Gain (Loss)       70,000  
Percentage of Auction Rate Securities Redeemed at Par Value 76.00%        
Deferred Compensation Plan Assets 607,000 607,000      
Deferred Compensation Plan Liabilities 628,000 628,000      
Deferred Compensation Plan Assets Change in Fair Value Expense   10,000      
Deferred Compensation Plan Liabilities, Operating Expense   11,000      
Temporary [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Other than Temporary Impairment Losses, Investments   360,000 490,000    
Other Than Temporary [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Other than Temporary Impairment Losses, Investments   30,000 30,000    
Government Backed Securities [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Auction Rate Securities, Noncurrent     2,100,000    
Auction Rate Securities [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Other than Temporary Impairment Losses, Investments     40,000    
Gain (Loss) on Investments     40,000    
Auction Rate [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Other than Temporary Impairment Losses, Investments     520,000    
Auction Rate Securities Backed By Student-Loan Notes [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Other than Temporary Impairment Losses, Investments   390,000      
Government Backed Securities [Member]
         
Note 2 - Cash, Cash Equivalents and Investments (Details) [Line Items]          
Auction Rate Securities, Noncurrent $ 9,900,000 $ 9,900,000