CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY AND COMPREHENSIVE INCOME (USD $)	Total	Redeemable Noncontrolling Interests	Common Stock	Class A Common Stock	Capital in Excess of Par Value	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Noncontrolling Interest
Balances at Oct. 31, 2009	$ 490,658,000	$ 56,937,000	$ 104,000	$ 157,000	$ 224,625,000	$ (1,381,000)	$ 189,485,000	$ 77,668,000
Comprehensive income:
Net income	28,270,000	4,668,000	0	0	0	0	24,366,000	3,904,000
Foreign currency translation adjustments	1,512,000	0	0	0	0	1,512,000	0	0
Total comprehensive income	29,782,000	4,668,000	0	0	0	1,512,000	24,366,000	3,904,000
Cash dividends	(1,570,000)	0	0	0	0	0	(1,570,000)	0
Five-for-four common stock split	(68,000)	0	26,000	40,000	(66,000)	0	(68,000)	0
Tax benefit from stock option exercises	952,000	0	0	0	952,000	0	0	0
Proceeds from stock option exercises	1,385,000	0	1,000	1,000	1,383,000	0	0	0
Stock option compensation expense	610,000	0	0	0	610,000	0	0	0
Acquisitions of noncontrolling interests	0	(727,000)	0	0	0	0	0	0
Redemptions of common stock related to stock option exercises	(353,000)	0	0	0	(353,000)	0	0	0
Distributions to noncontrolling interests	0	(4,446,000)	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests	311,000	(311,000)	0	0	0	0	311,000	0
Other	3,000	0	0	0	(1,000)	4,000	0	0
Balances at Apr. 30, 2010	521,710,000	56,121,000	131,000	198,000	227,150,000	135,000	212,524,000	81,572,000
Balances at Oct. 31, 2010	554,826,000	55,048,000	131,000	199,000	227,993,000	(124,000)	240,913,000	85,714,000
Comprehensive income:
Net income	39,024,000	5,625,000	0	0	0	0	33,904,000	5,120,000
Foreign currency translation adjustments	1,867,000	0	0	0	0	1,867,000	0	0
Total comprehensive income	40,891,000	5,625,000	0	0	0	1,867,000	33,904,000	5,120,000
Cash dividends	(1,990,000)	0	0	0	0	0	(1,990,000)	0
Five-for-four common stock split	(102,000)	0	33,000	50,000	(83,000)	0	(102,000)	0
Tax benefit from stock option exercises	7,718,000	0	0	0	7,718,000	0	0	0
Proceeds from stock option exercises	1,806,000	0	3,000	1,000	1,802,000	0	0	0
Stock option compensation expense	1,128,000	0	0	0	1,128,000	0	0	0
Acquisitions of noncontrolling interests	0	(7,241,000)	0	0	0	0	0	0
Redemptions of common stock related to stock option exercises	(5,432,000)	0	0	0	(5,432,000)	0	0	0
Distributions to noncontrolling interests	0	(4,450,000)	0	0	0	0	0	0
Noncontrolling interests assumed related to acquisition	0	5,612,000	0	0	0	0	0	0
Adjustments to redemption amount of redeemable noncontrolling interests	639,000	(639,000)	0	0	0	0	639,000	0
Other	(2,000)	0	0	0	(2,000)	0	0	0
Balances at Apr. 30, 2011	$ 599,482,000	$ 53,955,000	$ 167,000	$ 250,000	$ 233,124,000	$ 1,743,000	$ 273,364,000	$ 90,834,000