Derivative Financial Instruments - Narrative (Details)	6 Months Ended
	Dec. 31, 2016 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Net gain deferred in accumulated other comprehensive income	$ 1,053,000
Loss expected to be reclassified to interest expense	572,000
Interest Rate Swap Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount of interest rate swap contracts	$ 75,000,000
Derivative, term of contract	15 years
Average rate on interest rate swap contracts	2.35%