Note 9 - INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Note To Financial Statement Details Textual
Increase (Decrease) in Income Taxes			$ 4,200
Income Tax Expense (Benefit), Total	$ 88	$ 300	$ 1,044	$ (3,179)
Effective Income Tax Rate Reconciliation, Percent, Total			9.00%	43.00%
Unrecognized Tax Benefits, Ending Balance	14,600		$ 14,600		$ 14,300
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	2,100		2,100		2,200
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	2,700		2,700
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued in Long Term Liabilities	700		700
Unrecognized Tax Benefits In Deferred Tax Assets	12,600		12,600
Deferred Tax Assets, Valuation Allowance, Total	41,900		41,900		41,900
Net deferred tax assets	$ 176		$ 176		$ 249