BUSINESS COMBINATIONS - Additional Information (Details) - USD ($)			1 Months Ended	12 Months Ended
	May 01, 2019	Apr. 30, 2019	Jul. 02, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 29, 2018
BUSINESS COMBINATIONS
Business Combination, Contingent Consideration, Asset			$ 9,234,000
Business Combination, Consideration Transferred			6,759,000
Escrow Deposit Disbursements Related to Property Acquisition			$ 750,000
Common Stock, Shares, Issued			1,500,000	10,510,694	10,245,277
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned						$ 2,475,000
Business Acquisition, Transaction Costs				$ 130,000	$ 395,000
Payments to Acquire Businesses, Gross				1,271,000	6,759,000
Revenues			$ 2,852,000	43,616,000	26,346,000
Net loss				$ (790,000)	(194,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 9,234,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				9 years 9 months 18 days
Amortization of Intangible Assets					165,000
Seventh Wave Laboratories LLC acquisition [Member]
BUSINESS COMBINATIONS
Revenues				$ 12,070
Net loss				163
Smithers Avanza Toxicology Services LLC acquisition
BUSINESS COMBINATIONS
Business Combination, Consideration Transferred	$ 2,595
Debt Instrument, Interest Rate, Stated Percentage		6.50%
Lessee, Finance Lease, Term of Contract	5 years 8 months
Lessee, Finance Lease, Renewal Term	5 years
Escrow Deposit Disbursements Related to Property Acquisition	$ 125
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	200	810
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned		$ 394
Business Acquisition, Transaction Costs				439
Payments to Acquire Businesses, Gross	$ 1,271
Revenues	4,267
Net loss				$ 195
Smithers Avanza Toxicology Services LLC acquisition | Minimum [Member]
BUSINESS COMBINATIONS
Finance Lease, Liability, Payment, Due	400
Smithers Avanza Toxicology Services LLC acquisition | Maximum [Member]
BUSINESS COMBINATIONS
Finance Lease, Liability, Payment, Due	$ 600
Noncompete Agreements [Member]
BUSINESS COMBINATIONS
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				4 years
Amortization of Intangible Assets				$ 47,000	12,000
Client Relationships [Member]
BUSINESS COMBINATIONS
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				8 years
Amortization of Intangible Assets				$ 248,000	62,000
Trademarks [Member]
BUSINESS COMBINATIONS
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				15 years
Amortization of Intangible Assets				$ 78,000	20,000
Backlog [Member]
BUSINESS COMBINATIONS
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				6 months
Amortization of Intangible Assets				$ 72,000	$ 71,000