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Note 6 - Long-Term Debt (Detail) - Tranches in connection with Term Loan (USD $) In Thousands, except Share data, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Convertible Term Loan Principal Amount | $ 65,262 | $ 56,673
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 1,898,620 |
Tranche A-1 [Member] |  |
Convertible Term Loan Principal Amount | 4,550 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 7.00 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 650,000 |
Tranche A-2a [Member] |  |
Convertible Term Loan Principal Amount | 2,411 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 35.00 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 68,889 |
Tranche A-2b [Member] |  |
Convertible Term Loan Principal Amount | 7,419 |
Tranche B-1 [Member] |  |
Convertible Term Loan Principal Amount | 2,856 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 13.50 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 211,565 |
Tranche B-2 [Member] |  |
Convertible Term Loan Principal Amount | 2,190 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 12.50 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 175,239 |
Tranche B-3a [Member] |  |
Convertible Term Loan Principal Amount | 6,810 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 35.00 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 194,558 |
Tranche B-3b [Member] |  |
Convertible Term Loan Principal Amount | 26,072 |
Tranche C-1 [Member] |  |
Convertible Term Loan Principal Amount | 5,712 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 13.50 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 423,130 |
Tranche C-2 [Member] |  |
Convertible Term Loan Principal Amount | 2,190 |
Convertible Term Loan Conversion Price (in Dollars per share) | $ 12.50 |
Convertible Term Loan Potential Number of Shares Issuable (in Shares) | 175,239 |
Tranche D [Member] |  |
Convertible Term Loan Principal Amount | $ 5,052 |

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