Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Consolidated net loss	$ (56,207)	$ (7,853)	$ (80,578)	$ (20,171)
Adjustments to reconcile consolidated net loss to net cash provided by operating activities:
Amortization of intangible assets	5,242	4,539	10,472	9,003
Depreciation and amortization of property and equipment	9,613	7,082	18,776	13,703
Accretion of discount and issuance costs on notes	8,594	3,227	17,060	6,399
Share-based compensation	19,587	13,718	50,076	31,447
Revaluation of contingent consideration	(415)	(677)	(1,643)	2,132
Deferred income taxes	31,391	(1,586)	24,356	(3,217)
Excess tax benefits from share-based compensation	(275)	(219)	(421)	(365)
Loss from equity investments	1,136	767	2,266	1,368
Payments of contingent consideration, operating activities	0	(591)	0	(591)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable, net	(6,625)	(9,650)	(10,578)	(7,389)
Deferred costs and other assets	(7,405)	(5,759)	(4,071)	(4,345)
Accounts payable	1,205	2,898	1,752	1,661
Accrued liabilities	16,399	8,075	4,355	(11,310)
Deferred revenue	549	4,728	3,065	5,423
Net cash provided by operating activities	22,789	18,699	34,887	23,748
Investing activities:
Purchases of investments	(259,609)	(125,677)	(507,994)	(253,185)
Maturities of investments	228,520	136,141	565,043	212,485
Increase (decrease) in customer funding liabilities	(2,790)	5,140	14,677	8,129
Investments in and loans to unconsolidated affiliates	(23,640)	0	(27,164)	(17,326)
Capital expenditures	(14,473)	(10,455)	(26,779)	(20,989)
Payments for acquisitions, net of cash acquired	(2,560)	(9,564)	(2,560)	(9,564)
Payments of contingent consideration related to acquisition of Etap	0	(1,266)	0	(1,266)
Net cash provided by (used in) investing activities	(74,552)	(5,681)	15,223	(81,716)
Financing activities:
Investment in consolidated joint venture by noncontrolling interest	0	0	1,809	0
Payments on repurchase of common stock	0	0	(441)	(201)
Net proceeds from share-based equity award activity	1,547	857	1,819	1,420
Proceeds from employee stock purchase plan activity	881	928	1,686	1,584
Minimum tax withholding on restricted stock awards	(31,959)	(19,251)	(31,985)	(19,347)
Excess tax benefits from share-based compensation	275	219	421	365
Payments of contingent consideration, financing activities	0	(2,497)	0	(2,497)
Repayments on capital leases	(1,833)	0	(1,833)	0
Net cash used in financing activities	(31,089)	(19,744)	(28,524)	(18,676)
Effect of foreign currency exchange rate changes on cash and cash equivalents	(60)	(1,086)	(18)	(1,190)
Net increase (decrease) in cash and cash equivalents	(82,912)	(7,812)	21,568	(77,834)
Cash and cash equivalents at beginning of period	406,176	232,252	301,696	302,274
Cash and cash equivalents at end of period	323,264	224,440	323,264	224,440
Supplemental cash flow information:
Cash paid for interest	0	0	4,890	3,594
Income tax payments, net	$ 1,639	$ 3,031	$ 2,444	$ 3,402