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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)
3 Months Ended
Mar. 31, 2022
Revenue from Contract with Customer [Abstract]  
Disaggregation of revenue
          
   Three Months Ended 
   March 31, 
   2022   2021 
Fixed Price Contracts  $1,684   $1,294 
Service Contracts   1,917    2,628 
Total  $3,601   $3,922 
Schedule of earnings in excess of billings on uncompleted contracts
          
   March 31, 2022   December 31, 2021 
Costs incurred on uncompleted contracts  $96   $1,312 
Estimated earnings on uncompleted contracts   86    1,485 
 Gross costs and estimated earnings   182    2,797 
Less: Billings to date on uncompleted contracts   (359)   (2,695)
 Costs incurred plus estimated earning less billings on uncompleted contracts, net  $(177)  $102 
           
Included in the accompanying unaudited condensed consolidated balance sheets under the following captions:          
Contract assets  $   $352 
Contract liabilities   (177)   (250)
 Costs incurred plus estimated earning less billings on uncompleted contract  $(177)  $102