Condensed Statements of Cash Flows (USD $)	6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Conversion of Preferred Stock and Accrued Dividends to Common Stock	Mar. 31, 2013 Conversion of Preferred Stock and Accrued Dividends to Common Stock	Mar. 31, 2014 Conversion of Redeemable Warrant Liability to Common Stock	Mar. 31, 2013 Conversion of Redeemable Warrant Liability to Common Stock
Cash flows from operating activities
Net loss	$ (5,939,473)	$ (7,286,378)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation expense	59,444	78,500
Stock-based compensation	218,236	201,607
Non-cash interest expense	0	293,103
Amortization of deferred financing costs	0	57,850
Amortization of debt discount	0	654,528
Change in fair value of warrant liability	573,582	0
Changes in operating assets and liabilities
(Increase) decrease in accounts receivable	(2,696,274)	89,239
Increase in inventories	0	(159,419)
Decrease (increase) in prepaid expenses and other current assets	1,069,948	(951,405)
Decrease in other assets	1,320	0
Increase in accounts payable	1,265,654	2,557,229
(Decrease) increase in deferred revenue	(325,000)	1,742,500
Increase (decrease) in accrued expenses and other liabilities	3,723,990	(108,332)
Net cash used for operating activities	(2,048,573)	(2,830,978)
Cash flows from investing activities
Purchase of property and equipment	(34,616)	0
Proceeds from short term investments	0	1,500,000
Net cash (used in) provided by investing activities	(34,616)	1,500,000
Cash flows from financing activities
Proceeds from exercise of preferred stock warrants	20,868	0
Proceeds from issuance of common stock from initial public offering, net of issuance costs	46,487,456	0
Net cash provided by (used in) financing activities	46,507,145	(82,482)
Net increase (decrease) in cash	44,423,956	(1,413,460)
Cash and cash equivalents at beginning of period	10,455,565	5,066,886
Cash and cash equivalents at end of period	54,879,521	3,653,426
Supplemental disclosures of cash flow information
Interest	1,432	0
Financing costs	5,157,544	2,463
Franchise taxes	9,295	2,085
Conversion of note payable to preferred stock
Fair value of warrants issued with notes payable and the beneficial conversion feature	0	1,309,054
Conversion of note payable to preferred stock	0	10,062,296
Conversion to Common Stock			91,647,889	15,623,157	2,280,443	0
Accrued initial public offering costs	$ 414,026	$ 0