Related Party Transactions - Debt to Related Parties (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Interest rate percentage	6.00%
Unpaid principal balance	$ 658,083	$ 786,495
Current portion of debt	337,583	29,848
Long-term portion of debt	299,229	711,433
Total	636,812	741,281
Affiliated entity
Related Party Transaction [Line Items]
Unpaid principal balance	59,138	68,272
Current portion of debt	24,683	2,200
Long-term portion of debt	31,088	61,853
Total	$ 55,771	64,053
Convertible Promissory Notes Interest Rate 6% Due December 2020, Recourse \| Convertible promissory notes
Related Party Transaction [Line Items]
Interest rate percentage	6.00%
Unpaid principal balance	$ 289,299	296,233
Current portion of debt	273,410	0
Long-term portion of debt	0	263,284
Total	273,410	263,284
Convertible Promissory Notes Interest Rate 6% Due December 2020, Recourse \| Convertible promissory notes \| Affiliated entity
Related Party Transaction [Line Items]
Unpaid principal balance	20,801	27,734
Current portion of debt	20,801	0
Long-term portion of debt	0	27,734
Total	$ 20,801	27,734
Term Loan due September 2028, Non-Recourse \| Term loan
Related Party Transaction [Line Items]
Interest rate percentage	7.50%
Unpaid principal balance	$ 38,337	40,538
Current portion of debt	3,882	2,200
Long-term portion of debt	31,087	34,119
Total	34,969	36,319
Term Loan due September 2028, Non-Recourse \| Term loan \| Affiliated entity
Related Party Transaction [Line Items]
Unpaid principal balance	38,337	40,538
Current portion of debt	3,882	2,200
Long-term portion of debt	31,088	34,119
Total	$ 34,970	$ 36,319

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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