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RELATED PARTY TRANSACTIONS (NARRATIVE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Related Party Transaction Line Items
Sales Revenue Services Net	$ 588,726	$ 539,219
Airmax [Member]
Related Party Transaction Line Items
Purchases from Related Party	100	300
Accounts Payable Due from Related Party	88
Welltok
Related Party Transaction Line Items
Sales Revenue Services Net	400	500
Unisys [Member]
Related Party Transaction Line Items
Sales Revenue Services Net	$ 32	$ 200

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