CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands		Common Shares [Member]		Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]	Total
Balance at beginning at Jun. 30, 2016		$ 17,988			$ (9,111)	$ 8,877
Balance at beginning (in shares) at Jun. 30, 2016		4,052,987
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					5,084	5,084
Exercise of stock options	[1]	$ 7				$ 7
Exercise of stock options (in shares)		23,632	[1]			33,834
Net change in unrealized gain (loss) from marketable equity investments				33		$ 33
ESPP shares issued		$ 18				18
ESPP shares issued (in shares)		3,794
Share-based compensation		$ 3				3
Shares issued under ATM	[2]	8,276
Share repurchases		$ (312)				(312)
Share repurchases (in shares)		(63,496)
Balance at end at Jun. 30, 2017		$ 17,704		33	(4,027)	13,710
Balance at end (in shares) at Jun. 30, 2017		4,025,193
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income					1,621	$ 1,621
Exercise of stock options (in shares)
Net change in unrealized gain (loss) from marketable equity investments				(186)		$ (186)
ESPP shares issued		$ 37				37
ESPP shares issued (in shares)		6,733
Share-based compensation		$ 194				194
Shares issued under ATM	[2]	$ 2,120				2,120
Shares issued under ATM, (in shares)	[2]	332,189
Share repurchases		$ (220)				(220)
Share repurchases (in shares)		(33,026)
Balance at end at Jun. 30, 2018		$ 19,835		$ (153)	$ (2,406)	$ 17,276
Balance at end (in shares) at Jun. 30, 2018		4,331,089

[1] During fiscal 2017, a total of 33,834 stock options were exercised and a total of 10,202 shares were used to effect a cashless exercise.

[2] The proceeds raised from the ATM shares issued during fiscal 2017 in the net amount of $48,000 were accounted for as a reduction of prepaid expenses related to establishing the ATM. Additionally, $142,000 of proceeds raised from the ATM shares issued during fiscal 2018 were accounted for as a reduction of prepaid expenses.