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Statements of Cash Flows (Unaudited) (USD $)
 3 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Operating activities:    
Net (loss) income $ (1,359,642) $ 26,275
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Stock-based compensation expense 656,534 501,697
Accretion and amortization on debt securities 97,751  
Depreciation and amortization 48,616 59,997
Provision (recovery) for doubtful accounts (2,773) 4,206
Changes in assets and liabilities:    
Accounts receivable (524,141) (113,364)
Other assets (2,157) 19,579
Accounts payable 443,948 183,315
Accrued payroll and related taxes 144,592 148,869
Deferred revenue 807,496 359,464
Other liabilities 485,802 (29,410)
Net cash provided by operating activities 796,026 1,160,628
Investing activities:    
Purchases of investments (308,956) (219,268)
Sales and maturities of investments 2,685,734  
Purchases of property and equipment (315,121) (43,304)
Net cash provided by (used in) investing activities 2,061,657 (262,572)
Financing activities:    
Proceeds from exercise of stock options 37,237 161,130
Principal payments on capital lease obligations (4,060) (3,436)
Net cash provided by financing activities 33,177 157,694
Net increase in cash and cash equivalents 2,890,860 1,055,750
Cash and cash equivalents at beginning of period 6,702,090 5,655,716
Cash and cash equivalents at end of period 9,592,950 6,711,466
Supplemental disclosures of cash flow information:    
Cash paid for interest 2,192 3,122
Cash paid for income taxes   800
Supplemental disclosures of non-cash investing and financing activities:    
Unrealized holding gain on available for sale investments 4,378 4,931
Capital lease obligations incurred   95,388
Cashless exercise of option and warrants   $ 82