INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits beginning balance		$ 25,467	$ 22,372	$ 14,363
Increase for current year tax positions		4,213	3,487	9,561
Decrease for prior year tax positions				(70)
Increase for prior year tax positions		452	440
Expiration of the statute of limitation for assessment of taxes		(1,259)	(832)	(1,482)
Unrecognized tax benefits ending balance	$ 28,873		25,467	$ 22,372
Unrecognized tax benefits that would favorably affect the annual effective tax rate if recognized in future periods	29,000	25,000
Interest and penalties on income taxes recognized	400	200
Interest and penalties on income taxes reversal			200
Interest and penalties accrued on income taxes	1,000	$ 600	$ 400
State and Local Jurisdiction
Unrecognized Tax Benefits [Roll Forward]
Increase for current year tax positions	5,000
Expiration of the statute of limitation for assessment of taxes	$ (1,000)