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Subsequent Events - Additional Information (Details) - Subsequent Event - USD ($)
$ / shares in Units, $ in Millions
Sep. 30, 2017
Jun. 26, 2017
Jun. 09, 2017
Class A shares      
Subsequent Event [Line Items]      
Cash distribution declared to limited partner (in dollars per share)   $ 0.2642  
Kern Acquisition | 8point3 OpCo Holdings, LLC      
Subsequent Event [Line Items]      
Payment to acquire equity method investment     $ 3.2
Maximum | Kern Acquisition | 8point3 OpCo Holdings, LLC      
Subsequent Event [Line Items]      
Purchase price of Kern remaining assets $ 5.0