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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Operating activities:    
Net loss $ (790,000) $ (194,000)
Adjustments to reconcile net loss to net cash provided by operating activities, net of effects of acquisitions:    
Depreciation and amortization 2,717,000 1,875,000
Employee stock compensation expense 278,000 134,000
Unrealized foreign currency gains (159,000) 0
Gain on disposal of property and equipment 1,000 0
Provision for doubtful accounts (178,000) (4,000)
Changes in operating assets and liabilities:    
Accounts receivable (3,087,000) (589,000)
Inventories 87,000 (269,000)
Income taxes (3,000) (82,000)
Prepaid expenses and other assets (113,000) (77,000)
Accounts payable 1,019,000 980,000
Accrued expenses 849,000 103,000
Customer advances 1,156,000 1,610,000
Net cash provided by operating activities 1,777,000 3,487,000
Investing activities:    
Cash paid in acquisition (1,271,000) (6,759,000)
Capital expenditures (6,878,000) (1,317,000)
Proceeds from sale of equipment 0 2,000
Net cash used by investing activities (8,149,000) (8,074,000)
Financing activities:    
Payments of long-term debt (909,000) (331,000)
New borrowings on long-term debt 1,271,000 5,500,000
Payments of debt issuance costs (94,000) (113,000)
Proceeds from exercise of stock options 6,000 1,000
Payments on revolving line of credit (28,662,000) (7,545,000)
Borrowings on revolving line of credit 29,725,000 7,545,000
Borrowing on construction loan 4,301,000 0
Borrowings on capex line of credit 655,000 0
Payments on capital lease obligations (88,000) (131,000)
Net cash provided by financing activities 6,205,000 4,926,000
Net (decrease) increase in cash and cash equivalents (167,000) 339,000
Cash and cash equivalents at beginning of period 773,000 434,000
Cash and cash equivalents at end of period 606,000 773,000
Supplemental disclosure of cash flow information:    
Cash paid for interest 566,000 233,000
Conversion of preferred shares to common shares 0 1,000,000
Seventh Wave Laboratories LLC acquisition    
Discontinued Operation, Alternative Cash Flow Information [Abstract]    
Assets acquired 0 10,052,000
Liabilities assumed 0 (818,000)
Common shares issued 0 (2,475,000)
Cash paid 0 6,759,000
Smithers Avanza Toxicology Services LLC acquisition    
Operating activities:    
Net loss 195  
Discontinued Operation, Alternative Cash Flow Information [Abstract]    
Assets acquired 3,384,000 0
Liabilities assumed (1,719,000) 0
Common shares issued (394,000) 0
Cash paid $ 1,271,000 $ 0