Stockholders' Equity (Details) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Nov. 27, 2017
Class of Stock [Line Items]
Repurchase common stock amount authorized				$ 5,000,000
Stock repurchased during period (in shares)	300,000
Payments for repurchase of common stock	$ 1,500,000	$ 0	$ 0
Remaining authorized amount of common stock repurchase program	$ 3,500,000
Common Stock
Class of Stock [Line Items]
Common stock issued (in shares)	21,000	76,000	52,000
Restricted common stock to employees (in shares)	190,000	166,000	76,000
Shares canceled or surrendered as payment of tax withholding (shares)	66,000	38,000	58,000
Stock repurchased during period (in shares)	304,000