CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balances at Oct. 31, 2015	$ 174,568	$ 655	$ 57,539	$ 125,760	$ (9,386)
Balances (in shares) at Oct. 31, 2015		6,551,718
Net income	10,289	$ 0	0	10,289	0
Other comprehensive income (loss)	(1,409)	0	0	0	(1,409)
Stock-based compensation	1,183	$ 2	1,181	0	0
Stock-based compensation (in shares)		21,385
Dividends paid	(1,712)	$ 0	0	(1,712)	0
Balances at Jul. 31, 2016	182,919	$ 657	58,720	134,337	(10,795)
Balances (in shares) at Jul. 31, 2016		6,573,103
Balances at Oct. 31, 2016	185,475	$ 657	59,119	136,742	(11,043)
Balances (in shares) at Oct. 31, 2016		6,573,103
Net income	8,414	$ 0	0	8,414	0
Other comprehensive income (loss)	3,642	0	0	0	3,642
Exercise of common stock options	269	$ 1	268	0	0
Exercise of common stock options (in shares)		12,164
Stock-based compensation	1,088	$ 5	1,083	0	0
Stock-based compensation (in shares)		38,930
Dividends paid	(1,920)	$ 0	0	(1,920)	0
Balances at Jul. 31, 2017	$ 196,968	$ 663	$ 60,470	$ 143,236	$ (7,401)
Balances (in shares) at Jul. 31, 2017		6,624,197