Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities
Net loss	$ (39,622)	$ (18,793)	$ (18,928)
Adjustments to reconcile net loss to cash used in operating activities
Depreciation and amortization	4,525	4,080	2,161
Non-cash interest expense	3,642	1,526	6,588
Deferred income taxes	294	0	0
Change in fair value of conversion option liability	(440)	(181)	0
Share‑based compensation	12,628	2,676	1,468
Issuance of warrants for referral fees	202	0	0
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(1,972)	(694)	142
Prepaid expenses and other assets	(807)	(221)	(19)
Deferred revenue, including long-term portion	7,240	6,128	2,882
Accounts payable	26	181	145
Accrued expenses and other	2,459	1,895	3,652
Net cash used in operating activities	(11,825)	(3,403)	(1,909)
Cash flows from investing activities
Increase in restricted cash	(530)	(100)	(100)
Purchases of property and equipment	(1,786)	(393)	(326)
Acquisitions of businesses, net of cash acquired	(989)	(12,349)	0
Net cash used in investing activities	(3,305)	(12,842)	(426)
Cash flows from financing activities
Partner’s investment in joint venture	407	0	0
Principal payments on loan payable	(502)	(500)	(197)
Payments on capital leases	(238)	0	0
Proceeds from debt issuances	6,930	0	0
Repayments of debt	(7,964)	0	0
Proceeds from debentures	0	13,004	4,836
Proceeds from issuance of warrants	0	1,660	629
Proceeds from exercise of stock options and warrants	2,226	321	0
Deferred financing costs	(151)	0	0
Proceeds from issuance of common stock in IPO and follow-on offering, net of underwriting discounts and commissions and other offering costs	138,613	0	0
Repurchase of common shares	(600)	0	0
Other financing activities	0	(7)	(68)
Net cash provided by financing activities	138,721	14,478	5,200
Effect of changes in foreign exchange rates on cash and cash equivalents	(37)	0	0
Net increase (decrease) in cash and cash equivalents	123,554	(1,767)	2,865
Cash and cash equivalents
Beginning of period	4,174	5,941	3,076
End of period	127,728	4,174	5,941
Supplemental cash flow data:
Cash paid for interest	947	625	524
Non-cash investing and financing activities:
Assets acquired under capital lease	1,676	0	0
Accrued offering costs	1,125	0	0
Conversion of convertible A-1 and A-2 preferred stock into common stock upon IPO	46,684	0	0
Issuance of common stock upon conversion of debentures	16,784	0	17,730
Conversion of Submittal Exchange Holdings Class A preferred units into common stock upon IPO	7,282	0	0
Reclassification of redeemable common stock upon IPO	7,898	0	0
Fair value of warrants reclassified to equity upon IPO	435	0	0
Warrants issued for mortgage renewal	0	0	109
Redeemable Preferred Stock, Series A-1 [Member]
Non-cash investing and financing activities:
Accretion of redeemable securities	3,549	3,373	11,486
Redeemable Non-Controlling Interest [Member]
Non-cash investing and financing activities:
Accretion of redeemable securities	$ 325	$ 0	$ 0