Income Taxes (Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Federal Tax Expense (Benefit)	$ 0	$ 0	$ (48)
Current State and Local Tax Expense (Benefit)	220	0	0
Current Income Tax Expense (Benefit)	220	0	(48)
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred Federal Income Tax Expense (Benefit)	33,584	3,594	(45)
Deferred State and Local Income Tax Expense (Benefit)	1,497	4,516	1,366
Deferred Income Tax Expense (Benefit)	35,081	8,110	1,321
Income tax expense	$ 35,301	$ 8,110	$ 1,273