Earnings Per Share - Schedule of Calculation of Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings (loss) from continuing operations	$ (2,768)	$ (890)	$ 2,949	$ (1,250)	$ (823)	$ (1,392)	$ (8,566)	$ (1,133)	$ (1,959)	$ (11,914)	$ 487
Weighted-average shares outstanding	9,163	9,334	9,443	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,443
Weighted-average shares outstanding	9,163	9,334	9,450	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,496
Earnings (loss) from discontinued operations									$ 4,647	$ (2,169)	$ (242)
Weighted-average shares outstanding	9,163	9,334	9,443	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,443
Weighted-average shares outstanding	9,163	9,334	9,450	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,496
Net earnings (loss)	$ (2,408)	$ (1,025)	$ 3,098	$ 3,023	$ (1,234)	$ (1,835)	$ (9,346)	$ (1,668)	$ 2,688	$ (14,083)	$ 245
Weighted-average shares outstanding	9,163	9,334	9,443	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,443
Weighted-average shares outstanding	9,163	9,334	9,450	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,496
Weighted-average number of shares outstanding-basic	9,163	9,334	9,443	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,443
Effect of dilutive director, employee and guarantor options and outstanding common share warrants									0	0	53
Weighted-average number of shares outstanding-diluted	9,163	9,334	9,450	9,443	9,443	9,443	9,443	9,443	9,346	9,443	9,496
Weighted-average shares outstanding, per share	$ (0.30)	$ (0.10)	$ 0.31	$ (0.13)	$ (0.09)	$ (0.15)	$ (0.91)	$ (0.12)	$ (0.21)	$ (1.26)	$ 0.05
Weighted-average shares outstanding, per share	(0.30)	(0.10)	0.31	(0.13)	(0.09)	(0.15)	(0.91)	(0.12)	(0.21)	(1.26)	0.05
Weighted-average shares outstanding, per share									0.50	(0.23)	(0.02)
Weighted-average shares outstanding, per share									0.50	(0.23)	(0.02)
Weighted-average shares outstanding, per share	(0.26)	(0.11)	0.33	0.32	(0.13)	(0.19)	(0.99)	(0.18)	0.29	(1.49)	0.03
Weighted-average shares outstanding, per share	$ (0.26)	$ (0.11)	$ 0.33	$ 0.32	$ (0.13)	$ (0.19)	$ (0.99)	$ (0.18)	$ 0.29	$ (1.49)	$ 0.03