CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Paid-In Capital	Retained Earnings
Beginning Balance (in shares) at Oct. 31, 2017		22,802,690
Beginning Balance at Oct. 31, 2017	$ 1,432,862	$ 22,803	$ 134,999	$ 1,275,060
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	61,431			61,431
Cash dividends	$ (28,966)			(28,966)
Purchase of common stock (in shares)	(823,385)	(823,385)
Purchase of common stock	$ (83,463)	$ (823)	(59,639)	(23,001)
Stock compensation plan transactions (in shares)		120,475
Stock compensation plan transactions	(8,742)	$ 120	(8,862)
Amortization of unearned compensation	14,771		14,771
Ending Balance (in shares) at Oct. 31, 2018		22,099,780
Ending Balance at Oct. 31, 2018	1,387,893	$ 22,100	81,269	1,284,524
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	53,294			53,294
Cash dividends	$ (28,357)			(28,357)
Purchase of common stock (in shares)	0
Stock compensation plan transactions (in shares)		104,140
Stock compensation plan transactions	$ (5,490)	$ 104	(5,594)
Amortization of unearned compensation	10,335		10,335
Ending Balance (in shares) at Oct. 31, 2019		22,203,920
Ending Balance at Oct. 31, 2019	1,417,675	$ 22,204	86,010	1,309,461
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	28,274			28,274
Cash dividends	$ (31,133)			(31,133)
Purchase of common stock (in shares)	0
Stock compensation plan transactions (in shares)		47,151
Stock compensation plan transactions	$ (3,636)	$ 47	(3,683)
Amortization of unearned compensation	8,093		8,093
Ending Balance (in shares) at Oct. 31, 2020		22,251,071
Ending Balance at Oct. 31, 2020	$ 1,419,273	$ 22,251	$ 90,420	$ 1,306,602