Note 12 - Taxes on Income (Details Textual) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended
	Dec. 13, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Deferred Tax Assets, Operating Loss Carryforwards, Total		$ 15,546	$ 19,079
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration		9,000
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration		6,500
Deferred Tax Assets, Tax Credit Carryforwards, Foreign		6,152	4,101
Deferred Tax Assets, Tax Credit Carryforwards, Foreign, Not Subject to Expiration		100
Deferred Tax Assets, Tax Credit Carryforwards, General Business		1,485	844
Deferred Tax Assets, Valuation Allowance, Total		43,424	34,247
Undistributed Earnings of Foreign Subsidiaries		206,700
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		300
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total		200	$ 200	$ 200
Decrease in Unrecognized Tax Benefits is Reasonably Possible		$ 900
Open Tax Year		2016 2017 2018 2019 2020
Tax Credit Expiring in 2026 [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign, Subject to Expiration		$ 900
Tax Credit Expiring in 2029 [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign, Subject to Expiration		3,700
Tax Credit Expiring in 2030 [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign, Subject to Expiration		1,500
Tax Credit Expiring in 2038 [Member]
Deferred Tax Assets, Tax Credit Carryforwards, General Business		200
Tax Credit Expiring in 2039 [Member]
Deferred Tax Assets, Tax Credit Carryforwards, General Business		800
Tax Credit Expiring in 2040 [Member]
Deferred Tax Assets, Tax Credit Carryforwards, General Business		$ 500