Note 3 - Fair Value Measurements and Other Financial Measurements (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	Level		June 30, 2012		December 31, 2011
Warrant liabilities:		3	$	475	$	654

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]

	Fair value at June 30, 2012		Valuation technique	Unobservable input
Liabilities:
Warrant liabilities	$	475	Black-Scholes-Merton option pricing model	Prevailing interest rates, Company’s stock price volatility, expected warrant term

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

	Cost		Fair Value		Carrying Value
Warrant liabilities:	$	1,928	$	475	$	475

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Warrant liabilities
Opening balance – December 31, 2011	$	654
Purchases, sales, issuances, and settlements*		—
Transfers into and (or) out of Level 3*		—
Change in fair value		(179)
Unrealized gains / (losses)		—
Other adjustments		—
Closing balance – June 30, 2012	$	475

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

		June 30, 2012				December 31, 2011
Level		Carrying value		Fair value		Carrying value		Fair value
Accounts receivable, net	2		576		576		333		333
Trade accounts payable	2		6,225		6,225		5,870		5,870
Capital lease obligation	2		21		21		12		12