Income Taxes and Distributions (Provision for Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current tax expense	$ 11,358	$ 12,594	$ 15,850
Deferred tax benefit	(1,390)	(9,637)	(7,176)
Income tax expense (benefit)	$ 9,968	$ 2,957	$ 8,674