Stockholders' Equity (Details) - USD ($)	3 Months Ended	6 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Feb. 01, 2019	Jan. 31, 2019	Nov. 27, 2017
Class of Stock [Line Items]
Stock repurchase program authorized amount					$ 5,000,000
Stock repurchase program shares repurchased (in shares)		100,000
Remaining authorized repurchase amount	$ 2,000,000	$ 2,000,000
Common Stock
Class of Stock [Line Items]
Exercise of options (in shares)	2,000	37,000
Shares canceled or surrendered as payment of tax withholding (in shares)	200,000	200,000
Subsequent Event
Class of Stock [Line Items]
Stock repurchase program authorized amount			$ 15,000,000	$ 5,000,000