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Fair Value Measurements (Details) - Recurring - USD ($)
$ in Thousands
Dec. 31, 2017
Jun. 30, 2017
Assets    
Interest rate swap not designated as cash flow hedge $ 252 $ 49
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets    
Interest rate swap not designated as cash flow hedge 0 0
Significant Other Observable Inputs (Level 2)    
Assets    
Interest rate swap not designated as cash flow hedge 252 49
Significant Unobservable Inputs (Level 3)    
Assets    
Interest rate swap not designated as cash flow hedge $ 0 $ 0