PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION, Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current assets [Abstract]
Cash and cash equivalents	$ 563,067	$ 71,766	$ 58,261
Accounts receivable	105,553	56,441
Other receivable	18,979	9,679
Prepaid expenses	16,639	5,892
Total current assets	952,934	260,656
Deferred tax assets	13,166	11,076
Total assets	1,052,179	341,257
Liabilities and Stockholders' Equity [Abstract]
Income taxes payable	254	31
FIN-48 payable	2,282	83
Deferred tax liability	1,302	1,286
Total liabilities	240,514	133,087
Total stockholders' equity	676,204	141,150
Total liabilities and stockholders' equity	1,052,179	341,257
Parent Company [Member]
Current assets [Abstract]
Cash and cash equivalents	29,536	30,188
Accounts receivable	16	0
Due from intercompany	0	0
Other receivable	48	5
Prepaid expenses	594	359
Total current assets	30,194	30,552
Deferred tax assets	13,166	11,076
Investment in unconsolidated subsidiaries	637,961	102,455
Total assets	681,321	144,083
Liabilities and Stockholders' Equity [Abstract]
Accounts payable	875	1,278
Other payable	404	255
Income taxes payable	254	31
FIN-48 payable	2,282	83
Deferred tax liability	1,302	1,286
Total liabilities	5,117	2,933
Total stockholders' equity	676,204	141,150
Total liabilities and stockholders' equity	$ 681,321	$ 144,083