PROVISION FOR INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2018

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)	2018			2017			2016
U.S. operations	$	(6,529	)	$	(6,944	)	$	(477	)
Foreign operations	66,293			67,243			50,429
Total pretax income	$	59,764		$	60,299		$	49,952

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)	2018			2017			2016
Current provision (benefit):
Federal	$	(6,382	)	$	35,311		$	—
State	4			4			—
Foreign	938			1,483			1,638
	(5,440		)	36,798			1,638
Deferred provision (benefit):
Federal	(4,593		)	(3,640		)	(175		)
State	—			—			(27		)
Foreign	(187		)	(468		)	(382		)
	(4,780		)	(4,108		)	(584		)
Total	$	(10,220	)	$	32,690		$	1,054

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,
	2018		2017		2016
Provision (benefit) computed at Federal statutory rate	21.0	%	35.0	%	35.0	%
Business tax credits	(9.1	)	(5.7	)	(6.0	)
Stock-based compensation	(2.2	)	(5.0	)	2.2
Foreign income taxed at different rate	(25.0	)	(37.3	)	(33.1	)
GILTI inclusion	10.6		—		—
U.S. Tax Act - transition tax	(16.2	)	54.1		—
U.S. Tax Act - deferred tax asset and liability adjustment	—		8.1		—
Valuation allowance	2.8		2.2		1.8
Other	1.0		2.8		2.2
Total	(17.1	)%	54.2	%	2.1	%

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)	2018			2017
Deferred tax assets:
Other reserves and accruals	$	3,695		$	979
Tax credit carry-forwards	18,052			10,442
Stock compensation	3,050			4,064
Capital losses	157			163
Net operating loss	3,144			7,059
Valuation allowance	(19,955		)	(18,421		)
	8,143			4,286
Deferred tax liabilities:
Depreciation	(1,423		)	(1,965		)
Other	(30		)	(95		)
	(1,453		)	(2,060		)
Net deferred tax assets	$	6,690		$	2,226

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, 2016	$	13,560
Gross Increase for Tax Positions of Current Year	1,856
Gross Decrease for Tax Positions of Prior Years	(23		)
Unrecognized Tax Benefits Balance at December 31, 2016	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