Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Accumulated Other Comprehensive Income (Details)

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Derivative Instruments and Hedging Activities - Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss)        
Beginning balance $ 6,186 $ 16,025 $ 8,126 $ 1,210
Amount reclassified to income (694) (2,288) (3,775) 396
Net change in unrealized gains or losses (581) (3,526) 560 8,605
Ending balance $ 4,911 $ 10,211 $ 4,911 $ 10,211