INCOME TAXES Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Tax Asset (Liability) [Line Items]
Deferred Tax Assets, Capital Loss Carryforwards	$ 1,500
Tax credit and net operating loss carryforwards	247,658	$ 254,745
Allowances for bad debts	45	47
Revenues	3,515	6,659
Costs and expenses	27,093	23,217
Inventories	1,529	1,466
Acquired intangible assets	0	62
Deferred Tax Assets, Other	6,093	7,432
Gross deferred tax assets	285,933	293,628
Valuation allowance	(273,877)	(278,785)
Deferred tax assets after valuation allowance	12,056	14,843
Deferred Tax Liabilities, Revenues	0	0
Costs and expenses	(779)	(626)
Acquired intangible assets	(46)	(92)
Deferred Tax Liabilities, Leasing Arrangements	(6,021)	(7,324)
Gross deferred tax liabilities	(6,846)	(8,042)
Net deferred tax assets (liabilities)	5,210	6,801
Long-term deferred tax liabilities, net	0	0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount	3,464	551	$ 1,049
Effective Income Tax Rate Reconciliation, Non-taxable Income From PPP Loan Forgiveness, Amount	(1,638)	0	0
Effective Income Tax Rate Reconciliation, Stock Based Compensation, Amount	(7,542)	(430)	$ 52
US Federal and State [Member]
Deferred Tax Asset (Liability) [Line Items]
Tax credit carryforwards	47,700
Net operating loss carryforwards	704,900
Foreign [Member]
Deferred Tax Asset (Liability) [Line Items]
Tax credit carryforwards	6,100
Net operating loss carryforwards	93,300
Valuation allowance, tax credits	6,100
Valuation allowance, net operating losses	62,100
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 1,500
Net Operating Loss Carryforward Irish Subsidiary | Foreign [Member]
Deferred Tax Asset (Liability) [Line Items]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		$ 6,000