CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss)	Total
Balances at Oct. 31, 2018	$ 672	$ 64,185	$ 167,859	$ (9,863)	$ 222,853
Balances (in shares) at Oct. 31, 2018	6,723,160
Net income (loss)	$ 0	0	11,906	0	11,906
Other comprehensive income (loss)	0	0	0	(94)	(94)
Stock-based compensation expense, net of taxes withheld for vested restricted shares	$ 5	929	0	0	934
Stock-based compensation expense, net of taxes withheld for vested restricted shares (in shares)	44,077
Dividends paid	$ 0	0	(1,565)	0	(1,565)
Balances at Apr. 30, 2019	$ 677	65,114	178,200	(9,957)	234,034
Balances (in shares) at Apr. 30, 2019	6,767,237
Balances at Jan. 31, 2019	$ 676	64,391	173,766	(8,812)	230,021
Balances (in shares) at Jan. 31, 2019	6,758,123
Net income (loss)			5,252		5,252
Other comprehensive income (loss)				(1,145)	(1,145)
Stock-based compensation expense, net of taxes withheld for vested restricted shares	$ 1	723			724
Stock-based compensation expense, net of taxes withheld for vested restricted shares (in shares)	9,114
Dividends paid			(818)		(818)
Balances at Apr. 30, 2019	$ 677	65,114	178,200	(9,957)	234,034
Balances (in shares) at Apr. 30, 2019	6,767,237
Balances at Oct. 31, 2019	$ 677	66,350	182,151	(8,933)	240,245
Balances (in shares) at Oct. 31, 2019	6,767,237
Net income (loss)	$ 0	0	(4,820)	0	(4,820)
Other comprehensive income (loss)	0	0	0	585	585
Stock-based compensation expense, net of taxes withheld for vested restricted shares	$ 5	277	0	0	$ 282
Stock-based compensation expense, net of taxes withheld for vested restricted shares (in shares)	47,750				47,750
Stock repurchases	$ (15)	(3,896)	0	0	$ (3,911)
Stock repurchases (in shares)	(148,761)
Dividends paid	$ 0	0	(1,693)	0	(1,693)
Balances at Apr. 30, 2020	$ 667	62,731	175,638	(8,348)	230,688
Balances (in shares) at Apr. 30, 2020	6,666,226
Balances at Jan. 31, 2020	$ 680	65,985	180,444	(8,734)	238,375
Balances (in shares) at Jan. 31, 2020	6,803,163
Net income (loss)			(3,927)		(3,927)
Other comprehensive income (loss)				386	386
Stock-based compensation expense, net of taxes withheld for vested restricted shares	$ 2	642			644
Stock-based compensation expense, net of taxes withheld for vested restricted shares (in shares)	11,824
Stock repurchases	$ (15)	(3,896)			(3,911)
Stock repurchases (in shares)	(148,761)
Dividends paid			(879)		(879)
Balances at Apr. 30, 2020	$ 667	$ 62,731	$ 175,638	$ (8,348)	$ 230,688
Balances (in shares) at Apr. 30, 2020	6,666,226