Earnings Per Share - Schedule of Earnings (Loss) Per Share and Shares Outstanding (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Earnings (Loss) from continuing operations	$ 6,937	$ (586)
Basic:
Weighted-average shares outstanding	6,907	6,957
Diluted:
Weighted-average shares outstanding	6,989	6,957
Earnings (loss) from discontinued operations	$ (47)	$ (554)
Net earnings (loss)	$ 6,890	$ (1,140)
Weighted-average number of shares outstanding—basic	6,907	6,957
Effect of dilutive director, employee and guarantor options and outstanding common share warrants	82	0
Weighted-average number of shares outstanding—diluted	6,989	6,957
Basic:
Weighted-average shares outstanding, Per Share Amount from continuing operations	$ 1.00	$ (0.08)
Weighted-average shares outstanding, Per Share Amount from discontinued operations	(0.01)	(0.08)
Weighted-average shares outstanding, per share	1.00	(0.16)
Diluted:
Weighted-average shares outstanding, Per Share Amount from continuing operations	0.99	(0.08)
Weighted-average shares outstanding, Per Share Amount from discontinued operations	(0.01)	(0.08)
Weighted-average shares outstanding, per share	$ 0.99	$ (0.16)