Supplemental Cash Flows Information - Noncash Investing and Financing Activities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 17,016	$ 17,680
Cash and cash equivalents, beginning balance	36,814	51,228
Restricted cash and cash equivalents, beginning balance	50,206	32,083
Cash, cash equivalents and restricted cash, beginning of period	87,020	83,311
Cash and cash equivalents, ending balance	46,009	42,461
Restricted Cash and cash equivalents, ending balance	21,999	30,114
Cash, cash equivalents and restricted cash, end of period	68,008	72,575
Proceeds from mortgages, notes and bonds payable
Proceeds from mortgages and notes payable	0	24,567
Proceeds from bonds	0	0
Proceeds from mortgages, other notes and bonds payable	0	24,567
Payment of mortgages, notes and bonds payable
Recurring payment on mortgages and notes payable	16,029	20,247
Bond payments	32,402	11,561
Payments on mortgages, other notes and bonds payable	$ 48,431	$ 31,808