Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Cumulative Effect, Period of Adoption, Adjustment
Balance as of the beginning of the fiscal period at Oct. 31, 2017	$ 617,092	$ 0	$ 106,883	$ 534,329	$ (141)	$ (24,120)	$ 141
Increase (Decrease) in Stockholders' Equity
Cash dividends paid on common stock	(85,031)			(85,031)
Issuance of shares for stock options exercised and restricted stock units vested	15,806		1,496	14,310
Stock-based compensation expense	12,161			12,161
Contribution of stock to a deferred compensation trust	1,437			1,437
Purchase of shares of common stock	(164,530)		(2,778)	(161,752)
Other comprehensive income (loss)	42					42
Net earnings	271,939			271,939
Balance as if the end of the fiscal period at Oct. 31, 2018	$ 668,916	$ 864	105,601	587,252	$ 864	(23,937)
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201812Member
Cash dividends paid on common stock	$ (96,133)			(96,133)
Issuance of shares for stock options exercised and restricted stock units vested	27,932		1,545	26,387
Stock-based compensation expense	13,429			13,429
Contribution of stock to a deferred compensation trust	1,404			1,404
Purchase of shares of common stock	(22,705)		(404)	(22,301)
Other comprehensive income (loss)	(8,112)					(8,112)
Net earnings	273,983			273,983
Balance as if the end of the fiscal period at Oct. 31, 2019	$ 859,578		106,742	784,885		(32,049)
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201409Member
Cash dividends paid on common stock	$ (107,698)			(107,698)
Issuance of shares for stock options exercised and restricted stock units vested	19,630		870	18,760
Stock-based compensation expense	15,408			15,408
Contribution of stock to a deferred compensation trust	2,568			2,568
Purchase of shares of common stock	(2,146)		(29)	(2,117)
Other comprehensive income (loss)	(2,213)					(2,213)
Net earnings	329,701			329,701
Balance as if the end of the fiscal period at Oct. 31, 2020	$ 1,114,828		$ 107,583	$ 1,041,507		$ (34,262)