Notes Receivable - Additional Information (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| 7.00% Loan Agreement | |||
| Accounts Notes And Loans Receivable [Line Items] | |||
| Notes receivable | $ 3,700 | ||
| 6.35% Loan Agreement | |||
| Accounts Notes And Loans Receivable [Line Items] | |||
| Notes receivable | 2,827 | ||
| Real Estate | |||
| Accounts Notes And Loans Receivable [Line Items] | |||
| Interest income earned | $ 174 | $ 445 | |
| Real Estate | 7.00% Loan Agreement | |||
| Accounts Notes And Loans Receivable [Line Items] | |||
| Notes receivable | $ 3,700 | ||
| Interest rate | 7.00% | ||
| Maturity date | 2019-02 | ||
| Real Estate | 6.35% Loan Agreement | |||
| Accounts Notes And Loans Receivable [Line Items] | |||
| Notes receivable | $ 2,827 | ||
| Interest rate | 6.35% | ||
| Maturity date | 2019-11 | ||