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Financial Guarantee Liability - Additional Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) loan | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) loan
Guarantor Obligations |  |  |  |  |
Outstanding loan balances | $ 24,800,000 |  | $ 24,800,000 |  | $ 24,000,000
Maximum loss potential | 7,400,000 |  | 7,400,000 |  | 7,200,000
Portion covered by Credit Enhancement Agreement |  |  |  |  | 6,200
Provision for expected credit losses | (4,700) | $ 200 | (6,349) | $ 32,600 | 11,631
Delinquent |  |  |  |  |
Guarantor Obligations |  |  |  |  |
Outstanding loan balances | 33,600 |  | 33,600 |  | 53,500
Maximum loss potential | $ 11,200 |  | $ 11,200 |  | $ 17,800
Number of loans (loans) | loan | 2 |  | 2 |  | 4
Liquidation value of loans outstanding | $ 30,400 |  | $ 30,400 |  | $ 39,000
Potential loss on liquidation of loan |  |  | $ 1,500 |  | $ 5,300
Fannie Mae DUS or Freddie TAH Loans | Maximum |  |  |  |  |
Guarantor Obligations |  |  |  |  |
Percentage of contingent liability of actual losses incurred on outstanding loans (in percentage) |  |  | 33.00% |  |

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