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, 2014	$ 140,425	$ 172	$ 68,035	$ 109,099	$ (36,881)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	5,905	0	0	5,905	0
Other comprehensive income, net of tax	(13,168)	0	0	0	(13,168)
Restricted stock and exercise of stock options	159	1	158	0	0
Issuance of common stock	0
Stock-based compensation cost	1,025	0	1,025	0	0
Income tax effect on stock compensation	116	0	116	0	0
Stockholders' equity, ending balance at Oct. 31, 2015	134,462	173	69,334	115,004	(50,049)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	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 (loss)	(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)