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Receivables - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2016 a
Funds held by qualified intermediary |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Area of land (in acres) | 6,915
Minimum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Due period of notes receivable as secured by deed of trust | 3 years
Maximum |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Due period of notes receivable as secured by deed of trust | 5 years

X
- Definition Due period of notes receivable as secured by a deed of trust. + References No definition available. + Details
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X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Balance Type: | na
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X
- Definition Area of land held. + References No definition available. + Details
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- Details
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X
- Details
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Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |