REVENUE RECOGNITION Revenue Recognition - Performance Obligations (Details) - Tech [Member] $ in Thousands	Jun. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 47,169
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Tech-focused revenue, remaining performance obligation	$ 38,255
Tech-focused revenue, expected timing of satisfaction	6 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	$ 8,838
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	$ 76
Tech-focused revenue, expected timing of satisfaction	1 year