STOCKHOLDERS' EQUITY, Authorized Stock and Restricted Stock Plan (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017	Oct. 31, 2017
Authorized Stock [Abstract]
Shares authorized (in shares)	200,000,000		200,000,000
Excess stock, shares authorized (in shares)	20,000,000		20,000,000		20,000,000
Preferred Stock, shares authorized (in shares)	50,000,000		50,000,000
Common Stock [Member]
Authorized Stock [Abstract]
Common stock, shares authorized (in shares)	30,000,000		30,000,000		30,000,000
Class A Common Stock [Member]
Authorized Stock [Abstract]
Common stock, shares authorized (in shares)	100,000,000		100,000,000		100,000,000
Restricted Stock [Member]
Non-vested shares, weighted-average grant-date fair value [Roll forward]
Unamortized restricted stock compensation	$ 15,200,000		$ 15,200,000
Weighted average period for recognizing unamortized expense			4 years 9 months 18 days
Total amounts charged to compensation expense	$ 1,155,000	$ 1,094,000	$ 3,249,000	$ 3,093,000
Restricted Stock [Member] | Common Stock [Member]
Restricted Stock Plan [Abstract]
Number of shares awarded (in shares)			152,700
Non-vest shares, number of shares [Roll forward]
Non-vested, beginning of period (in shares)			1,274,150
Granted (in shares)			152,700
Vested (in shares)			(170,950)
Forfeited (in shares)			0
Non-vested, end of period (in shares)	1,255,900		1,255,900
Non-vested shares, weighted-average grant-date fair value [Roll forward]
Non-vested, beginning of period (in dollars per share)			$ 17.02
Granted (in dollars per share)			17.70
Vested (in dollars per share)			15.78
Forfeited (in dollars per share)			0
Non-vested, end of period (in dollars per share)	$ 17.22		$ 17.22
Restricted Stock [Member] | Class A Common Stock [Member]
Restricted Stock Plan [Abstract]
Number of shares awarded (in shares)			102,800
Non-vest shares, number of shares [Roll forward]
Non-vested, beginning of period (in shares)			412,275
Granted (in shares)			102,800
Vested (in shares)			(57,200)
Forfeited (in shares)			(3,850)
Non-vested, end of period (in shares)	454,025		454,025
Non-vested shares, weighted-average grant-date fair value [Roll forward]
Non-vested, beginning of period (in dollars per share)			$ 20.60
Granted (in dollars per share)			22.10
Vested (in dollars per share)			18.07
Forfeited (in dollars per share)			22.01
Non-vested, end of period (in dollars per share)	$ 21.13		$ 21.13
Restricted Stock Plan [Member] | Class A Common Shares or Common Shares [Member]
Restricted Stock Plan [Abstract]
Number of shares authorized (in shares)	4,500,000		4,500,000
Restricted Stock Plan [Member] | Restricted Stock [Member] | Common Stock [Member]
Restricted Stock Plan [Abstract]
Number of shares authorized (in shares)	350,000		350,000
Restricted Stock Plan [Member] | Restricted Stock [Member] | Class A Common Stock [Member]
Restricted Stock Plan [Abstract]
Number of shares authorized (in shares)	350,000		350,000
Restricted Stock Plan [Member] | Restricted Stock [Member] | Class A Common Shares or Common Shares [Member]
Restricted Stock Plan [Abstract]
Number of shares authorized (in shares)	3,800,000		3,800,000
Grant date fair value			$ 5,000,000