General Partners and Other Related Parties - Scheduled Capital Account Liquidation Requests (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Partners Capital Account Withdrawals [Abstract]
2019	$ 5,462
2020	15,354
2021	10,156
2022	7,102
2023	4,186
Thereafter	1,509
Total	$ 43,769