INCOME TAXES (Details - Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Deferred tax assets, tax benefit may not be realized	$ 210,500
Deferred tax liabilities goodwill	33,973	$ 28,457
Unrecognized tax benefits	5,088	$ 5,484	$ 4,320	$ 4,629
Unrecognized tax benefits, tax impact if recognized	4,100
Unrecognized tax benefits, income tax penalties and interest accrued during period	40
Unrecognized tax benefits, income tax penalties and interest accrued	400
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward	224,000
Operating loss carryforwards, subject to expiration	152,100
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward	194,300
Tax Year 2018 | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward	71,900
Raven Holdings | Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, subject to expiration	$ 24,900