Investing Receivables (Details) - Investing Receivables - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Amortized cost basis | $ 71,605 | $ 73,523 |
| Allowance for credit losses | (2,851) | 0 |
| Investing receivables, net | 68,754 | 73,523 |
| Notes receivable from the City of Huntsville | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Amortized cost basis | 65,564 | 59,427 |
| Other investing loans receivable | ||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||
| Amortized cost basis | $ 6,041 | $ 14,096 |
| 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. No definition available.
|
| X | ||||||||||
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount, before allowance for credit loss, of financing receivable. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|