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Note 5 - Accrued expenses and other current liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Disclosure Text Block Supplement [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

		June 30, 2013				December 31, 2012
Accrued employee liabilities		$	5,122			$	2,073
Accrued property, use, motor fuel and franchise taxes			1,005				1,472
Other			480				48
Total		$	6,607			$	3,593

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Tabular disclosure of the components of accrued liabilities.

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