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Note 16 - Income Tax (Details) - Deferred Income Tax Components (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Deferred income tax assets |  |
Loss carry-forwards | $ 91,957 | $ 88,318
Expenses not currently deductible | 23,467 | 17,255
Stock-based compensation | 3,956 | 3,317
Basis differences of partnerships and other entities | 14,173 | 15,685
Allowance for doubtful accounts | 4,580 | 3,324
Inventory and other reserves | 2,554 | 1,611
| 140,687 | 129,510
| 126,567 | 117,599
Deferred income tax liabilities |  |
Depreciation and amortization | 31,165 | 33,751
Unrealized foreign exchange gains |  | 932
Prepaid and other expenses deducted for tax purposes | 1,427 | 875
| 32,592 | 35,558
Net deferred income tax asset | 93,975 | 82,041
Deferred Income Taxes [Member] |  |
Deferred income tax assets |  |
Less: valuation allowance | $ (14,120) | $ (11,911)

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