INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits beginning balance	$ 14,363	$ 1,843	$ 7,664
Increase for current year tax positions	9,561	12,620	368
Decrease for prior period tax positions	(70)	(34)	(6,115)
Expiration of the statute of limitation for assessment of taxes	(1,482)	(66)	(74)
Unrecognized tax benefits ending balance	22,372	14,363	1,843
Unrecognized tax benefits that would favorably affect the annual effective tax rate if recognized in future periods	22,000	14,000
Interest and penalties on income taxes recognized	224	72
Interest and penalties on income taxes reversal			416
Interest and penalties accrued on income taxes	430	$ 205	$ 133
State and Local Jurisdiction [Member]
Unrecognized Tax Benefits [Roll Forward]
Increase for current year tax positions	9,000
Expiration of the statute of limitation for assessment of taxes	$ (1,000)