INCOME TAXES (Details - Deferred Income Taxes - Components) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Provision for accrued expenses	$ 5,953	$ 4,368
Net operating loss carryforwards (a)	59,817	6,296
Non-cash compensation expense	12,505	8,929
Interest limitation	3,532	0
Contingent liabilities	3,053	6,666
Other	4,545	2,138
Total gross deferred tax assets	89,405	28,397
Less: valuation allowance (b)	(2,229)	(2,694)	$ (2,101)	$ (2,341)
Total deferred tax assets, net of the valuation allowance	87,176	25,703
Deferred tax liabilities:
Intangible and other assets	(4,623)	(1,960)
Other	(892)	(1,160)
Total gross deferred tax liabilities	(5,515)	(3,120)
Net deferred taxes	81,661	$ 22,583
Federal
Deferred tax liabilities:
Operating loss carryforwards	203,500
State
Deferred tax liabilities:
State operating loss carryforwards	$ 498,500