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Note 2 - Balance Sheet Components (Detail) - Components of Balance Sheet Accounts (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Other current assets: |  |
Other current assets | $ 641 | $ 537
Property and equipment: |  |
Property and equipment | 1,410 | 1,311
Accumulated depreciation and amortization | (1,289) | (1,243)
| 121 | 68
Office software | 523 | 522
Furniture and fixtures | 49 | 122
Leasehold improvements | 294 | 222
Other accrued expenses: |  |
Other accrued expense | 1,688 | 1,471
Professional fees | 37 | 65
Warehousing and inventory-related expense | 1,688 | 1,471
Deferred revenue: |  |
Deferred revenue | 836 | 967
Other current liabilities: |  |
Other current liabilities | 991 | 950
Unshipped Product [Member] |  |
Deferred revenue: |  |
Deferred revenue | 647 | 776
Enrollment Package Revenue [Member] |  |
Deferred revenue: |  |
Deferred revenue | 189 | 191
Office Equipment [Member] |  |
Property and equipment: |  |
Property and equipment | 544 | 445
Sales Returns [Member] |  |
Other accrued expenses: |  |
Other accrued expense | 181 | 205
Employee-Related Expense [Member] |  |
Other accrued expenses: |  |
Other accrued expense | 1,034 | 991
Warehousing and Inventory Related Expense [Member] |  |
Other accrued expenses: |  |
Warehousing and inventory-related expense | 301 | 98
Other [Member] |  |
Other accrued expenses: |  |
Other accrued expense | 135 | 112
Other current liabilities: |  |
Other current liabilities | 230 | 105
Unclaimed Checks [Member] |  |
Other current liabilities: |  |
Other current liabilities | 761 | 845
Product-Related Deposits [Member] |  |
Other current assets: |  |
Other current assets | 65 | 98
Prepaid Insurance [Member] |  |
Other current assets: |  |
Prepaid insurance | 3 | 48
Deferred Commissions [Member] |  |
Other current assets: |  |
Other current assets | 26 | 156
Due From Russian Service Provider [Member] |  |
Other current assets: |  |
Other current assets | 239 |
Other [Member] |  |
Other current assets: |  |
Other current assets | $ 308 | $ 235

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