Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands		Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]		Treasury Stock [Member]	Total
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Impact of Adopting ASU | ASU 2016-01 [Member]	[1]			$ 114	$ (114)	[2]		$ 0
Balance at Jun. 30, 2018		$ 861	$ 11,017	86,213	(1,623)		$ (277)	96,191
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared				(854)				(854)
Net income				4,380				4,380
Other comprehensive loss, net of taxes					(76)			(76)
Balance at Sep. 30, 2018		861	11,017	89,853	(1,813)		(277)	99,641
Balance at Jun. 30, 2019		861	11,017	101,774	(1,006)		(277)	112,369
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared				(432)				(432)
Net income				4,863				4,863
Other comprehensive loss, net of taxes					(271)			(271)
Balance at Sep. 30, 2019		$ 861	$ 11,017	$ 106,205	$ (1,277)		$ (277)	$ 116,529

[1] See Note 9 Impact of Recent Accounting Pronouncements - cumulative effect of change in measurement of equity securities.

[2] Adoption of ASU 2016-01 - cumulative effect of change in measurement of equity securities.