Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders' equity, beginning balance at Oct. 31, 2015	$ 134,462	$ 173	$ 69,334	$ 115,004	$ (50,049)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,669	0	0	3,669	0
Other comprehensive income, net of tax	(6,413)	0	0	0	(6,413)
Restricted stock and exercise of stock options	0	3	(3)	0	0
Issuance of common stock	0
Stock-based compensation cost	1,072	0	1,072	0	0
Stockholders' equity, ending balance at Oct. 31, 2016	132,790	176	70,403	118,673	(56,462)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(697)	0	0	(697)	0
Other comprehensive income, net of tax	14,225	0	0	0	14,225
Restricted stock and exercise of stock options	78	3	75	0	0
Issuance of common stock	40,227	52	40,175	0	0
Stock-based compensation cost	1,698	0	1,698	0	0
Stockholders' equity, ending balance at Oct. 31, 2017	188,321	231	112,351	117,976	(42,237)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,479	0	0	11,479	0
Other comprehensive income, net of tax	(2,335)	0	0	0	(2,335)
Reclassification of stranded tax effects	0	0	0	6,358	(6,358)
Restricted stock and exercise of stock options	73	3	70	0	0
Issuance of common stock	0
Stock-based compensation cost	1,984	0	1,984	0	0
Stockholders' equity, ending balance at Oct. 31, 2018	$ 199,522	$ 234	$ 114,405	$ 135,813	$ (50,930)