Statements of Cash Flows (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES
Net loss	$ (5,291,869)	$ (7,275,706)	$ (7,839,996)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	3,444,480	2,791,862	2,599,858
Depreciation and amortization	470,697	323,383	231,981
Accretion and amortization on debt securities	401,319	182,162	261,398
Provision for bad debt	(5,900)	(5,773)	(3,571)
Loss (gain) on sale of property and equipment	349	(1,097)
Changes in assets and liabilities:
Accounts receivable	(1,454,823)	(391,543)	1,862,555
Other assets	(88,007)	(213,653)	(180,367)
Accounts payable	(83,642)	1,163,959	353,043
Accrued payroll and related taxes	(20,574)	728,522	230,956
Deferred revenue	291,238	1,214,572	758,855
Other liabilities	(131,939)	868,251	(53,476)
Net cash used in operating activities	(2,468,671)	(615,061)	(1,778,764)
INVESTING ACTIVITIES
Purchases of investments	(24,642,603)	(4,058,975)	(12,187,523)
Sales and maturities of investments	11,666,624	6,090,734	14,635,005
Purchases of property and equipment	(135,452)	(1,497,492)	(339,715)
Sale of property and equipment	800	36,621
Net cash (used in) provided by investing activities	(13,110,631)	570,888	2,107,767
FINANCING ACTIVITIES
Proceeds from the issuance of common stock, net of issuance costs of $0, $1,245,196 and $0, respectively		16,004,797
Proceeds from exercise of warrants and stock options, net	70,328	648,656	732,287
Principal payments on capital lease obligations	(18,892)	(16,914)	(14,916)
Net cash provided by financing activities	51,436	16,636,539	717,371
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(15,527,866)	16,592,366	1,046,374
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	23,294,456	6,702,090	5,655,716
CASH AND CASH EQUIVALENTS AT END OF PERIOD	7,766,590	23,294,456	6,702,090
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest	6,115	8,093	10,397
Cash paid for income taxes	2,226	1,076	800
NON-CASH FINANCING AND INVESTING ACTIVITIES
Unrealized holding gain (loss) on available for sale investments	(9,648)	2,454	9,239
Cashless exercise of option and warrants	3	125	410
Capital lease obligations			95,388
Common Stock [Member]
NON-CASH FINANCING AND INVESTING ACTIVITIES
Cashless settlement of restricted stock units	$ 15	$ 32