Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Cash flows from operating activities:
Net income (loss)	$ 31,590	$ 23,083	$ 14,974
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	25,135	22,868	23,515
Amortization of debt issuance costs and debt discount	476	1,037	1,804
Loss (gain) on early extinguishment of debt		1,123	(1,841)
Share-based compensation	3,253	3,969	6,480
Provision for bad debts	159	541	301
Write-down for inventory obsolescence	1,065	1,019	1,523
Loss (gain) on sale of assets	360	(123)	110
Profit on sale of leased assets	(5,192)	(5,437)	(4,279)
Excess tax benefit from stock option exercises	(829)	(53)
Changes in operating assets and liabilities:
Accounts receivable and investment in sales-type leases and notes receivable	(1,349)	(4,620)	(1,053)
Inventories	2,277	(866)	(2,304)
Accounts payable and accrued liabilities	(16,400)	17,933	(3,069)
Customer deposits and deferred revenue	487	(2,688)	2,149
Income taxes	2,568	127	(23)
Deferred income taxes	5,566	3,344	11
Prepaid income taxes	3,828	(1,108)	2,111
Other current and non-current assets	10,975	(8,824)	(267)
Net cash provided by operating activities	63,969	51,325	40,142
Cash flows from investing activities:
Proceeds from sale and maturities of investments			3,050
Proceeds from sale of assets	82	142	82
Proceeds from sale of leased assets	7,402	8,332	6,400
Payments for products leased and held for lease	(16,596)	(19,956)	(11,990)
Purchases of property and equipment	(3,530)	(5,293)	(1,150)
Purchases of intangible assets	(6,818)	(2,404)	(4,493)
Acquisition of business	(6,499)
Other	(928)	(1,254)	(944)
Net cash used by investing activities	(26,887)	(20,433)	(9,045)
Cash flows from financing activities:
Payment on Term Loan		(64,350)
Payments on Contingent convertible senior notes			(40,095)
Payments on notes payable and other long-term debt	(55)	(61)	(1,925)
Proceeds from issuance of common stock, net	2,490	473
Debt issuance costs		(2,242)
Excess tax benefit from stock option exercises	829	53
Other		22	(104)
Net cash used by financing activities	(24,736)	(28,659)	(30,124)
Effect of exchange rate changes on cash	(145)	(85)	1,493
Net increase (decrease) in cash and cash equivalents	12,201	2,148	2,466
Cash and cash equivalents, beginning of year	9,988	7,840	5,374
Cash and cash equivalents, end of year	22,189	9,988	7,840
Non-cash Investing and Financing transactions:
Newton future consideration	1,033
Recharacterization of prepaid royalty			4,667
Cash paid (received) for:
Income taxes, net of refunds	(461)	6,110	6,417
Interest	2,063	3,136	4,358
Proceeds From Revolver [Member]
Cash flows from financing activities:
Proceeds from Revolver	16,500	65,445
Debt Payments On Revolver [Member]
Cash flows from financing activities:
Debt payments on Revolver	(44,500)
Proceeds From Deutsche Bank Senior Secured Credit Facility [Member]
Cash flows from financing activities:
Proceeds from Revolver		12,126	50,400
Debt Payments On Deutsche Bank Senior Secured Credit Facility [Member]
Cash flows from financing activities:
Debt payments on Revolver		$ (40,125)	$ (38,400)