Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Provisional tax expense		$ 274,000
2017 Tax Act measurement adjustment	$ 135,700
Income tax expense (benefit), after foreign tax aredits	26,000
Transition tax on deemed repatriation	10,100
Alternative minimum tax	9,765	29,710
Alternative minimum tax expected to be refunded next fiscal year	19,600
Operating loss carryforwards	2,360,000
Deferred tax asset. operating loss carryforward	496,629	272,930
Decrease in income tax expense, foreign tax credits	16,000
Increase (decrease) in deferred tax asset valuation allowance	$ 262,000
Withholding tax on amounts repatriated	5.00%
Deferred tax expense, undistributed foreign earnings	$ 60,000
Earnings repatriated	1,200,000
Earnings expected to be repatriated in next fiscal year	100,000	1,300,000
Deferred tax liability, undistributed foreign earnings	5,000	65,000
Undistributed foreign earnings	1,200,000
Other recorded liabilities for interest and penalties	200	100	$ 300
Income tax expense (benefit) related to interest and penalties	$ (100)	$ (200)	$ (100)
United States [Member]
Income Tax Disclosure [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	2015
Canada [Member]
Income Tax Disclosure [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	2013
Malaysia [Member]
Income Tax Disclosure [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	2012
United Kingdom [Member]
Income Tax Disclosure [Line Items]
Earliest year remaining open for audit and/or settlement in major taxing jurisdictions	2017
Minimum [Member]
Income Tax Disclosure [Line Items]
Expected liability to be added for uncertain taxes during next twelve months	$ 200
Minimum [Member] | United States [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforward, expiration date	Dec. 31, 2036
Maximum [Member]
Income Tax Disclosure [Line Items]
Expected liability to be added for uncertain taxes during next twelve months	$ 1,000
Maximum [Member] | United States [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforward, expiration date	Dec. 31, 2037