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Note 15 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income tax benefit at federal statutory rate of 35%	$ (4,907)	$ (14,470)	$ (532)
State benefit, net of federal income tax effect	(362)	(866)	(96)
Federal and state income tax credits	(154)	(6,684)	(91)
Disallowed domestic manufacturing deduction		630
Change in valuation allowance	1,155	5,210	9
Uncertain income tax positions	(4)	2,082	5
Goodwill impairment (nondeductible)		1,849	5,623
Nondeductible expenses	63	91	207
Nontaxable adjustment to contingent consideration	(580)	103	(611)
Other	33	104	137
Income tax expense (benefit)	$ (4,756)	$ (11,951)	$ 4,651
Effective income tax rate	(33.90%)	(28.90%)	305.60%

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to Federal and State tax credits.

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