PROVISION FOR INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

U.S. and foreign components of income before income taxes [Table Text Block]

U.S. and foreign components of income before income taxes were:

	Year Ended December 31,
(in thousands)	2019		2018			2017
U.S. operations	$	82,692	$	(6,529	)	$	(6,944	)
Foreign operations	139,722		66,293			67,243
Total income before income taxes	$	222,414	$	59,764		$	60,299

Components of provision for income taxes [Table Text Block]

The components of the provision (benefit) for income taxes are as follows:

	Year Ended December 31,
(in thousands)	2019			2018			2017
Current provision (benefit):
Federal	$	18,293		$	(6,382	)	$	35,311
State	184			4			4
Foreign	1,293			938			1,483
	19,770			(5,440		)	36,798
Deferred provision (benefit):
Federal	9,683			(4,593		)	(3,640		)
State	—			—			—
Foreign	(507		)	(187		)	(468		)
	9,176			(4,780		)	(4,108		)
Total	$	28,946		$	(10,220	)	$	32,690

Effective income tax rate reconciliation [Table Text Block]

The provision (benefit) for income taxes differs from the amount that would result by applying the applicable federal income tax rate to income before income taxes, as follows:

	Year Ended December 31,
	2019		2018		2017
Provision (benefit) computed at Federal statutory rate	21.0	%	21.0	%	35.0	%
Business tax credits	(2.4	)	(9.1	)	(5.7	)
Stock-based compensation	(0.2	)	(2.2	)	(5.0	)
Foreign income taxed at different rate	(12.7	)	(25.0	)	(37.3	)
GILTI inclusion	6.2		10.6		—
U.S. Tax Act - transition tax	0.1		(16.2	)	54.1
U.S. Tax Act - deferred tax asset and liability adjustment	—		—		8.1
Valuation allowance	0.8		2.8		2.2
Other	0.2		1.0		2.8
Total	13.0	%	(17.1	)%	54.2	%

Components of net deferred income tax asset [Table Text Block]

The components of the net deferred income tax assets (liabilities) were as follows:

	December 31,
(in thousands)	2019			2018
Deferred tax assets:
Other reserves and accruals	$	3,099		$	3,695
Tax credit carry-forwards	18,968			18,052
Stock compensation	1,644			3,050
Capital losses	157			157
Net operating loss	899			3,144
Other	1,000			—
Valuation allowance	(20,822		)	(19,955		)
	4,945			8,143
Deferred tax liabilities:
Depreciation	(2,273		)	(1,423		)
Other	—			(30		)
	(2,273		)	(1,453		)
Net deferred tax assets	$	2,672		$	6,690

Unrecognized tax benefits rollforward [Table Text Block]

Reconciliation of the beginning and ending amount of unrecognized tax benefits:

(in thousands)	Unrecognized Tax Benefits
Unrecognized Tax Benefits Balance at January 1, 2017	$	15,393
Gross Increase for Tax Positions of Current Year	1,699
Gross Decrease for Tax Positions of Prior Years	(409		)
Unrecognized Tax Benefits Balance at December 31, 2017	16,683
Gross Increase for Tax Positions of Current Year	1,994
Gross Decrease for Tax Positions of Prior Years	(70		)
Unrecognized Tax Benefits Balance at December 31, 2018	18,607
Gross Increase for Tax Positions of Current Year	1,379
Gross Decrease for Tax Positions of Prior Years	(937		)
Unrecognized Tax Benefits Balance at December 31, 2019	$	19,049