Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
TCJA, provisional income tax expense (benefit)		$ 3,399	$ 4,152
TCJA, provisional expense for transition tax		86,858	86,707
TCJA, provisional expense for state transition tax		597	1,423
Unremitted foreign earnings	$ 1,571,033		10,166
TCJA, expense for undistributed accumulated foreign earnings		5,245	6,932
TCJA, benefit for undistributed accumulated foreign earnings		1,185
Foreign earnings repatriated		228,750
Deferred tax liabilities recognized on foreign earnings			$ 495
TCJA, provisional expense for transition tax, liability, current	6,949
Long-term tax liability	66,012	72,961
TCJA, provisional expense for transition tax, liability, year 2,3,4,5	6,949
TCJA, provisional expense for transition tax, liability, year 6	13,029
TCJA, provisional expense for transition tax, liability, year 7	17,371
TCJA, provisional expense for transition tax, liability year 8	21,714
International
Income Tax Contingency [Line Items]
Foreign earnings repatriated		62,383
U.S. Federal
Income Tax Contingency [Line Items]
Foreign earnings repatriated	$ 152,992	$ 228,750