Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net income (loss)	$ 653,830	$ (3,661,317)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Stock-based compensation expense	1,685,181	1,745,121
Depreciation and amortization	214,794	236,518
Accretion and amortization on debt securities	243,333	195,937
Provision for bad debt	9,900	(4,500)
Changes in assets and liabilities:
Accounts receivable	(37,303)	(1,616,192)
Other assets	(189,495)	46,134
Accounts payable	(492,190)	(191,270)
Accrued payroll and related taxes	(239,147)	(7,668)
Deferred revenue	732,581	790,488
Other liabilities	(51,690)	(64,716)
Net cash provided by (used in) operating activities	2,529,794	(2,531,465)
Investing activities:
Purchases of investments	(17,968,902)	(17,651,627)
Sales and maturities of investments	13,436,088	4,873,624
Purchases of property and equipment	(22,928)	(114,091)
Net cash used in investing activities	(4,555,742)	(12,892,094)
Financing activities:
Proceeds from exercise of stock options	9,748	58,834
Principal payments on capital lease obligations	(10,273)	(9,208)
Net cash (used in) provided by financing activities	(525)	49,626
Net decrease in cash and cash equivalents	(2,026,473)	(15,373,933)
Cash and cash equivalents at beginning of period	7,766,590	23,294,456
Cash and cash equivalents at end of period	5,740,117	7,920,523
Supplemental disclosures of cash flow information:
Cash paid for interest	2,230	3,295
Cash paid for income taxes	2,897	2,131
Supplemental disclosures of non-cash investing and financing activities:
Unrealized holding (loss) gain on available-for-sale investments	(5,854)	5,845
Cashless settlement of restricted stock units	204	15
Cashless exercise of stock options	$ 4	$ 3