ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018
Payables and Accruals [Abstract]
Accrued severance and related	$ 116		$ 610
Accrued payroll	694		418
Accrued bonus	1,306		972
Accrued commissions	877		379
Accrued product warranties	452		348
Accrued insurance	1,170		725
Accrued professional fees	1,383		331
Joint and several payroll liability	1,045		713
Uncertain tax positions	1,491		1,325
Other accrued expenses and current liabilities	862		1,367
Total accrued expenses and other current liabilities	$ 9,396	$ 7,009	$ 7,188	$ 20,088