SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Number of reportable segments | segment			2
Contract with customer, liability, revenue recognized		$ 800
Remaining performance obligation		772	$ 772
Proceeds from sale of debt securities				$ 118,500
Restricted cash, released	$ 35,000
Advertising expense		$ 52
Vesting period			1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Acquired Finite-Lived Intangible Assets [Line Items]
Remaining performance obligation period		2 years	2 years
Merton | Senior Secured Notes | Securities Purchase Agreement
Acquired Finite-Lived Intangible Assets [Line Items]
Lender fees				$ 4,600
Printronix
Acquired Finite-Lived Intangible Assets [Line Items]
Allowance for doubtful accounts and sales returns		$ 78	$ 78
Estimated useful life			7 years
Minimum
Acquired Finite-Lived Intangible Assets [Line Items]
Warranty term			3 months
Vesting period			1 year
Minimum | Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life			5 years
Maximum
Acquired Finite-Lived Intangible Assets [Line Items]
Warranty term			2 years
Vesting period			3 years
Maximum | Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful life			10 years