Earnings per share (Tables)

12 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Computations of the basic and diluted earning per common share (dollars and shares in thousands, except per share amounts)

	Years Ended September 30
	2018		2017		2016
Common shares:
Weighted average common shares
outstanding during the period -
shares used for basic earnings
per common share		3,318		3,299		3,283
Common shares issuable under share
based payment plans which are
potentially dilutive		2		3		2
Common shares used for diluted
earnings per common share		3,320		3,302		3,285
Net income	$	5,119		1,829		5,705
Earnings per common share
Basic	$	1.54		.55		1.74
Diluted	$	1.54		.55		1.74