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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 6 Months Ended
Mar. 31, 2018
Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net (loss) income $ (2,198,490) $ 4,735,453
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Depreciation and amortization 210,549 221,490
Share-based compensation expense:    
Stock awards 199,996 191,748
Deferred income taxes 61,832 14
(Increase) decrease in:    
Accounts receivable 374,970 388,611
Unbilled receivables, net 554,193 (28,057)
Inventories (260,889) (685,779)
Prepaid expenses and other current assets 149,285 (126,395)
Income taxes receivable/payable (8,469) 432,848
Increase (decrease) in:    
Accounts payable, net 69,284 (159,403)
Accrued expenses (205,178) (118,238)
Deferred revenue (60,109) 152,966
Net cash (used in) provided by operating activities (1,113,026) 5,005,258
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property and equipment (128,732) (80,050)
Net cash used in investing activities (128,732) (80,050)
Net (decrease) increase in cash and cash equivalents (1,241,758) 4,925,208
Cash and cash equivalents, beginning of year 24,680,301 18,767,661
Cash and cash equivalents, end of period 23,438,543 23,692,869
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION    
Cash paid for income tax $ 8,469 $ 400,000