Income Taxes (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Analysis of effective income tax rate for continuing operations
Notional U.S. federal income tax expense (benefit) at the statutory rate	$ (39,284)	$ 7,270
U.S. state and local income tax, net	390	181
Non-deductible expenses in the U.S.	140	232
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	(4,151)	0
Income tax provision	4,671	5,992	$ 4,820	$ 9,090
Singapore
Analysis of effective income tax rate for continuing operations
Notional U.S. federal income tax expense (benefit) at the statutory rate			(46,589)	15,305
U.S. state and local income tax, net			1,979	390
Non-U.S. operations:			85	(4)
Non-deductible expenses in the U.S.			3,420	569
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount			(4,564)	0
Income tax provision			4,820	9,090
Bermuda
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:			48,594	(8,048)
Ireland
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:			(171)	2,602
Other
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:			$ 2,066	$ (1,724)
Singapore | Foreign Tax Authority [Member]
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:	59	(2)
Bermuda | Foreign Tax Authority [Member]
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:	46,088	(2,910)
Ireland | Foreign Tax Authority [Member]
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:	1,017	2,093
Other | Foreign Tax Authority [Member]
Analysis of effective income tax rate for continuing operations
Non-U.S. operations:	$ 412	$ (872)