Equity Investments - Northstar Illinois (Details) $ in Millions	1 Months Ended
Aug. 31, 2015 USD ($)
Northstar IL
Schedule of Equity Method Investments [Line Items]
Shortfall payment	$ 10.0

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.

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