Subsequent Events - Additional Information (Detail) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Sep. 09, 2019 USD ($) a Employee $ / shares shares	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares
Subsequent Event [Line Items]
Proceeds from sale | $			$ 6,899	$ 0
Pre-tax gain on the sale of property | $			$ 455	$ 194
Unexpired stock options issued and forfeited | shares			56,000	29,142
Unexpired stock option exercise price | $ / shares			$ 1.46	$ 8.00
Subsequent Event [Member] | 2005 Equity Incentive Plan [Member]
Subsequent Event [Line Items]
Number of employees forfeited unexpired stock option | Employee	2
Subsequent Event [Member] | Non-employee Directors [Member] | 2011 Director Stock Option Plan [Member]
Subsequent Event [Line Items]
Share options issued | shares	50,000
Common share purchase price per share | $ / shares	$ 1.38
Share options issued to each non-employee directors | shares	10,000
Subsequent Event [Member] | Two Employees {Member] | 2005 Equity Incentive Plan [Member]
Subsequent Event [Line Items]
Unexpired stock options issued and forfeited | shares	165,000
Subsequent Event [Member] | Employee One [Member] | 2005 Equity Incentive Plan [Member]
Subsequent Event [Line Items]
Unexpired stock option exercise price | $ / shares	$ 1.79
Subsequent Event [Member] | Employee Two [Member] | 2005 Equity Incentive Plan [Member]
Subsequent Event [Line Items]
Unexpired stock option exercise price | $ / shares	$ 2.09
Undeveloped Land [Member] | Scenario, Forecast [Member]
Subsequent Event [Line Items]
Pre-tax gain on the sale of property | $		$ 100
Undeveloped Land [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Undeveloped land sold | a	11.4
Proceeds from sale | $	$ 348