Note 12 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	December 31,
	2012			2013			2014
Current:
Federal	$	6,719		$	5,145		$	16,081
State		2,547			1,340			2,131
Foreign		3,949			6,180			5,769
		13,215			12,665			23,981
Deferred:
Federal		(13,285	)		(10,026	)		(13,175	)
State		(2,857	)		(2,156	)		(1,291	)
Foreign		(5,059	)		(5,839	)		(5,080	)
Total		(21,201	)		(18,021	)		(19,546	)
Expense (Benefit) for income taxes	$	(7,987	)	$	(5,356	)	$	4,435

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2013						2014
	Current			Noncurrent			Current			Noncurrent
Deferred tax assets:
Allowance for doubtful accounts	$	2,784		$	—		$	3,607		$	—
Basis difference of intangible assets		—			6,220			—			7,623
Net operating loss carryforwards		—			489			—			2,334
Share-based compensation		—			10,930			—			10,462
Foreign currency translation		—			4,221			—			7,805
Tax credits		—			—			—			683
Other deferred tax assets		476			991			816			1,087
Total deferred tax assets		3,260			22,851			4,423			29,994
Deferred tax liabilities:
Basis difference of property and equipment		—			(1,194	)		—			(227	)
Cash to accrual adjustments		(2,426	)		(166	)		(166	)		—
Other deferred tax liabilities		(401	)		—			(481	)		(85	)
Total deferred tax liabilities		(2,827	)		(1,360	)		(647	)		(312	)
Net deferred tax assets	$	433		$	21,491		$	3,776		$	29,682

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	December 31,
	2012			2013			2014
Expected tax expense (benefit)	$	(8,024	)	$	(5,450	)	$	5,225
Increase (decrease) in income taxes resulting from:
State income taxes, net of federal benefit		(770	)		(694	)		712
Non-deductible items		274			240			896
Foreign tax rates		551			433			(2,587	)
Other		(18	)		115			189
Income tax expense (benefit)	$	(7,987	)	$	(5,356	)	$	4,435

Summary of Income Tax Contingencies [Table Text Block]

Balance at January 1, 2013	$	327
Increase to prior year tax positions		28
Increase to current year tax positions		—
Expiration of the statute of limitations for the assessment of taxes		—
Decrease related to settlements		—
Balance at December 31, 2013		355
Increase to prior year tax positions		1,238
Increase to current year tax positions		—
Expiration of the statute of limitations for the assessment of taxes		—
Decrease related to settlements		—
Balance at December 31, 2014	$	1,593