Note 3 - Fair Value Measurements and Other Financial Measurements (Detail) - Other Financial Instruments (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts receivable, net	$ 715	$ 1,498
Trade accounts payable	1,665	2,599
Capital lease obligation	6	5
Note payable	6,680	6,680
Fair Value, Inputs, Level 2 [Member]
Accounts receivable, net	715	1,498
Trade accounts payable	1,665	2,599
Capital lease obligation	9	9
Note payable	$ 6,680	$ 6,680

Carrying value as of the balance sheet date of obligations incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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