Note 5 - Prepaid Expenses and Other Current Assets (Details) - Prepaid Expenses and Other Current Assets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 5 - Prepaid Expenses and Other Current Assets (Details) - Prepaid Expenses and Other Current Assets [Line Items]
Deferred contract costs	$ 1,904	$ 4,532
Total prepaid expenses and other current assets	1,138	937
Deposits	342	342
Prepaid insurance	54	258
Related Party [Member]
Note 5 - Prepaid Expenses and Other Current Assets (Details) - Prepaid Expenses and Other Current Assets [Line Items]
Other assets	1,791	1,754
Total prepaid expenses and other current assets	1,791	1,754
Prepaid Equipment Purchase [Member]
Note 5 - Prepaid Expenses and Other Current Assets (Details) - Prepaid Expenses and Other Current Assets [Line Items]
Other prepaid assets	1,182
Prepaid Inventory Purchases [Member]
Note 5 - Prepaid Expenses and Other Current Assets (Details) - Prepaid Expenses and Other Current Assets [Line Items]
Other prepaid assets	690	159
Excluding Related Party [Member]
Note 5 - Prepaid Expenses and Other Current Assets (Details) - Prepaid Expenses and Other Current Assets [Line Items]
Other assets	52	178
Total prepaid expenses and other current assets	$ 1,138	$ 937