Note 7 - Prepaid and Other Current Assets and Other Non-Current Assets (Tables)

12 Months Ended

Dec. 31, 2014

Prepaid And Other Current Assets And Other Non Current Assets Disclosure [Abstract]

Schedule of Other Current Assets [Table Text Block]

	December 31, 2014		December 31, 2013
	(in thousands)
Prepaid expenses and other	$	3,184	$	4,327
Prepaid insurance		976		1,092
Debt issue costs, net		1,944		-
Prepaid and other current assets	$	6,104	$	5,419

Schedule of Other Assets, Noncurrent [Table Text Block]

	December 31,		December 31,
	2014		2013
	(in thousands)
Debt issue costs, net	$	-	$	3,293
Value-added tax receivable		2,150		1,772
Other non-current assets	$	2,150	$	5,065

Schedule of Amortization of Financing Costs[Table Text Block]

	Year Ended December 31,
	2014		2013		2012
	(in thousands)
Amortization of debt issue costs	$	1,372	$	2,365	$	3,135