REVENUE RECOGNITION Revenue Recognition - Performance Obligations (Details) - Tech [Member] $ in Thousands	Sep. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 41,918
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 23,197
Tech-focused revenue, expected timing of satisfaction	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 18,459
Tech-focused revenue, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 239
Tech-focused revenue, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 23
Tech-focused revenue, expected timing of satisfaction	1 year