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Borrowings - Summary of Borrowings (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 671,573 |
Debt issuance costs – notes and bonds payable | (3,700) |
Total borrowings, net | 667,982 | $ 624,061
Notes and bonds payable, net |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | 671,573 | 627,590
Debt issuance costs – notes and bonds payable | (3,691) | (3,629)
Total borrowings, net | 667,882 | 623,961
Notes payable to bank | Fixed-rate notes payable |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 583,807 | 492,182
Notes payable to bank | Fixed-rate notes payable | Minimum |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 2.44% |
Notes payable to bank | Fixed-rate notes payable | Maximum |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 5.70% |
Notes payable to bank | Fixed-rate notes payable | Weighted average |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 3.73% |
Notes payable to bank | Variable-rate notes payable |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 1,714 | 45,525
Notes payable to bank | Variable-rate notes payable | Minimum |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 3.00% |
Notes payable to bank | Variable-rate notes payable | Maximum |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 3.00% |
Notes payable to bank | Variable-rate notes payable | Weighted average |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 3.00% |
Bonds payable | Fixed-rate bonds payable |  |
Debt Instrument [Line Items] |  |
Total borrowings, gross | $ 86,052 | 89,883
Bonds payable | Fixed-rate bonds payable | Minimum |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 2.13% |
Bonds payable | Fixed-rate bonds payable | Maximum |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 4.57% |
Bonds payable | Fixed-rate bonds payable | Weighted average |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 3.45% |
Line of credit | Fixed-rate bonds payable | Revolving credit facility |  |
Debt Instrument [Line Items] |  |
Stated Interest Rate | 2.50% |
Line of credit | Variable-rate revolving lines of credit | Revolving credit facility |  |
Debt Instrument [Line Items] |  |
Total borrowings, net | $ 100 | $ 100

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