Note O - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Year ended December 31,
	2019			2018			2017
Domestic	$	(35,279	)	$	(11,444	)		17,497
Foreign		(16,108	)		1,666			67,029
Total income (loss) before income taxes	$	(51,387	)	$	(9,778	)		84,526

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

Current:	2019			2018			2017
Federal	$	—		$	—		$	—
State		16			80			(292	)
Foreign		97			1,349			10,965
Total	$	113		$	1,429		$	10,673
Deferred:
Federal	$	16,375		$	(6,391	)	$	2,015
State		1,716			61			(1,669	)
Foreign		(3,542	)		(2,731	)		(444	)
Total	$	14,549		$	(9,061	)	$	(98	)
Income tax (benefit) expense	$	14,662		$	(7,632	)	$	10,575

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

	2019			2018
NOL carryforward	$	21,516		$	12,049
Inventory reserves		2,385			1,490
AMT credit		172			172
Unrealized gains and losses		96			69
Share-based compensation		528			510
Foreign tax credit		4,599			4,599
Research and development credits		8,264			6,648
Interest		888			208
ASC 842 Assets		1,641			—
Other		520			718
Deferred tax assets		40,609			26,463
Less valuation allowance		(25,736	)		—
Deferred tax assets, net		14,873			26,463
Depreciation and amortization		(6,180	)		(4,749	)
ASC 842 Liabilities		(1,406	)		—
Deferred tax liabilities		(7,586	)		(4,749	)
Deferred tax assets, net	$	7,287		$	21,714

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

	2019			2018			2017
Expected taxes at statutory rate	$	(10,791	)	$	(2,053	)	$	29,584
Non-deductible/non-taxable items		962			1,020			1,212
Foreign rate differences		590			(1,043	)		(11,656	)
Foreign permanent differences		(671	)		(1,067	)		416
Increase (decrease) in valuation allowance		25,736			—			(1,700	)
Share-based compensation		607			(1,325	)		(10,348	)
Changes in tax rates		—			(103	)		2,768
Transition tax adjustment, net of foreign tax credits					(1,777	)		5,067
Research and development credits		(1,616	)		(2,022	)		(2,821	)
Uncertain tax positions		—			—			(1,616	)
Foreign other		27			514			—
Other, net		(182	)		224			(331	)
Tax (benefit) expense	$	14,662		$	(7,632	)	$	10,575

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	2019		2018		2017
Unrecognized tax benefits — January 1	$	181	$	181	$	181
Gross increases — tax positions in prior period		—		—		—
Gross decreases — tax positions in prior period		—		—		—
Unrecognized tax benefits — December 31	$	181	$	181	$	181