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Statements of Cash Flows (USD $)
 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
OPERATING ACTIVITIES:    
Net loss $ (1,468,300) $ (1,359,642)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
Stock-based compensation expense 829,071 656,534
Depreciation and amortization 116,175 48,616
Accretion and amortization on debt securities 94,725 97,751
Provision for (recovery of) bad debt 1,000 (2,773)
Changes in assets and liabilities:    
Accounts receivable (1,363,435) (524,141)
Other assets 92,643 (2,157)
Accounts payable (335,668) 443,948
Accrued payroll and related taxes (93,092) 144,592
Deferred revenue 641,026 807,496
Other liabilities (57,728) 485,802
Net cash (used in) provided by operating activities (1,543,583) 796,026
INVESTING ACTIVITIES:    
Purchases of investments (14,071,179) (308,956)
Sales and maturities of investments 2,478,624 2,685,734
Purchases of property and equipment (16,221) (315,121)
Net cash (used in) provided by investing activities (11,608,776) 2,061,657
FINANCING ACTIVITIES:    
Proceeds from exercise of stock options 39,421 37,237
Principal payments on capital lease obligations (4,533) (4,060)
Net cash provided by financing activities 34,888 33,177
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (13,117,471) 2,890,860
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 23,294,456 6,702,090
CASH AND CASH EQUIVALENTS AT END OF PERIOD 10,176,985 9,592,950
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:    
Cash paid for interest 1,719 2,192
Cash paid for income taxes 961  
NON-CASH FINANCING AND INVESTING ACTIVITIES:    
Cashless exercise of stock options 3  
Unrealized holding (loss) gain on available-for-sale investments (841) 4,378
Common Stock [Member]
    
NON-CASH FINANCING AND INVESTING ACTIVITIES:    
Cashless settlement of restricted stock units $ 5