REVENUE RECOGNITION - Impact of Topic 606 on Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Sep. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Unbilled contract revenue	$ 11,841	$ 8,773
Inventories	55,695	51,374
Accumulated deficit	$ (6,985)	$ (8,522)

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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