Note 15 - Fair Value Measurement (Details) - Changes in Level 3 Liabilities Measured at Fair Value on Recurring Basis (USD $)
 12 Months Ended
Dec. 31, 2013
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning balance – January 1, 2013 $ 8,666
Issuances 243,889
Total realized and unrealized gains or losses (65,928)
Repayments (8,700)
Ending balance – December 31, 2013 177,927
Accrued and Other Long-term Liabilities [Member]
  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning balance – January 1, 2013 8,657 [1]
Total realized and unrealized gains or losses 43 [1]
Repayments (8,700) [1]
Ending balance – December 31, 2013    [1]
Common Stock Warrant Liability [Member]
  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Beginning balance – January 1, 2013 9
Total realized and unrealized gains or losses (9)
Derivative Financial Instruments, Liabilities [Member]
  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Issuances 243,889
Total realized and unrealized gains or losses (65,962)
Ending balance – December 31, 2013 $ 177,927
[1] Represents the estimated fair value of the office closures included in accrued and other long-term liabilities.