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Derivatives and Hedging Activities (Schedule of Cash Flow Hedge Included in Accumulated Other Comprehensive Income (Loss), Net of Income Taxes) (Details) - Interest Rate Swap [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]        
Net interest expense recognized as a result of interest rate swap $ 28 $ 0 $ 174 $ 0
Unrealized gain (loss) in fair value of interest rate swap 725 0 1,136 0
Net increase (decrease) in accumulated other comprehensive income (loss) 753 0 1,310 0
Income tax effect 192 0 400 0
Net increase (decrease) in accumulated other comprehensive income (loss), net of tax $ 561 $ 0 $ 910 $ 0