Note 14 - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2014

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

	Balance at Beginning of Year		Additions		Deductions		Balance at End of Year
Deferred tax assets valuation allowance
Year ended December 31, 2014	$	22,762	$	3,780	$	496	$	26,046
Year ended December 31, 2013	$	21,907	$	3,437	$	2,582	$	22,762
Year ended December 31, 2012(1)	$	20,551	$	1,773	$	417	$	21,907

Allowance for Credit Losses on Financing Receivables [Table Text Block]

	Balance at Beginning of Year		Additions		Deductions		Balance at End of Year
Allowance for doubtful accounts receivable
Year ended December 31, 2014	$	19	$	4	$	23	$	—
Year ended December 31, 2013	$	—	$	19	$	—	$	19
Year ended December 31, 2012	$	8	$	66	$	74	$	—