VALUATION AND QUALIFYING ACCOUNTS (Valuation and Qualifying Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts for trade receivables and contract assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 4,886	$ 3,210	$ 1,557
Additions	3,888	3,282	2,072
Deductions/ Write offs	(3,253)	(1,606)	(419)
Balance at End of Year	5,521	4,886	3,210
Valuation allowance on deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	5,485	3,877	3,189
Additions	0	1,608	688
Deductions/ Write offs	(948)	0	0
Balance at End of Year	$ 4,537	$ 5,485	$ 3,877