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Summary of Significant Accounting Policies (Summary of Eligible Share Award Activity That Would Have Been Recorded in Temporary Equity) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Increase (Decrease) in Temporary Equity [Roll Forward]    
Balance at beginning of the period/inception $ 44,758 $ 36,261
Change in redemption value 619 8,600
Change in classification 988 3,716
Diversification of share awards 0 (3,819)
Change in classification (46,365) 0
Balance at end of period $ 0 $ 44,758