Consolidated Statements of Cash Flow (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Operating activities:
Consolidated net income (loss)	$ (12,318,000)	$ (947,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of intangible assets	4,464,000	3,965,000
Depreciation and amortization of property and equipment	6,621,000	5,296,000
Accretion of discount and issuance costs on notes	3,172,000	2,958,000
Share-based compensation	17,729,000	11,714,000
Revaluation of contingent consideration	2,809,000	(2,439,000)
Deferred income taxes	(1,631,000)	84,000
Excess tax benefits from share-based compensation	(146,000)	(36,000)
Income (loss) from equity investments	601,000	496,000
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, net	2,261,000	(4,131,000)
Deferred costs and other assets	1,414,000	(1,022,000)
Accounts payable	(1,237,000)	602,000
Accrued liabilities	(19,385,000)	(12,530,000)
Deferred revenues	695,000	2,347,000
Net cash provided by operating activities	5,049,000	6,357,000
Investing activities:
Purchases of investments	(127,508,000)	(122,250,000)
Maturities of investments	76,344,000	86,306,000
Increase(decrease) in customer funding liabilities, net of changes in restricted cash	2,989,000	(11,030,000)
Investment in and loans to unconsolidated affiliates	(17,326,000)	(6,864,000)
Capital expenditures	(10,534,000)	(7,550,000)
Payments for acquisitions, net of cash acquired	0	(67,460,000)
Net cash provided by (used in) investing activities	(76,035,000)	(128,848,000)
Financing activities:
Payments on repurchase of common stock	(201,000)	(598,000)
Net proceeds from share-based equity award activity	563,000	642,000
Proceeds from employee stock purchase plan activity	656,000	533,000
Minimum tax withholding on restricted stock awards	(96,000)	(116,000)
Excess tax benefits from share-based compensation	146,000	36,000
Net cash provided by (used in) financing activities	1,068,000	497,000
Effect of foreign currency exchange rate changes on cash and cash equivalents	(104,000)	(275,000)
Net increase (decrease) in cash and cash equivalents	(70,022,000)	(122,269,000)
Cash and cash equivalents at beginning of period	302,274,000	370,157,000
Cash and cash equivalents at end of period	232,252,000	247,888,000
Supplemental cash flow information:
Cash paid for interest	3,594,000	3,594,000
Income tax payments (receipts), net	$ 371,000	$ 139,000