|
Investing Receivables (Details) (USD $)
In Thousands, unless otherwise specified
|
Mar. 31, 2015
|
Dec. 31, 2014
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| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
| Investing receivables |
$ 52,814 |
$ 52,147 |
| Notes Receivable from City of Huntsville |
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
| Investing receivables |
49,814 |
49,147 |
| Notes Receivable from City of Huntsville | LW Redstone Company, LLC |
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
| Stated interest rate (as a percent) |
9.95% |
|
| Other investing loans receivable |
|
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] |
|
|
| Investing receivables |
$ 3,000 |
$ 3,000 |