Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Liabilities, Undistributed Foreign Earnings	$ (0)	$ 2,282	$ (0)
Income Tax Expense (Benefit), Total	$ 3,570	$ 4,791	$ 3,900
Effective Income Tax Rate Reconciliation, Percent, Total	(19.00%)	(56.00%)	19.00%
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings, Income Tax Expense		$ 1,232
Income Tax Expense (Benefit), Continuing Operations, Global Intangible Low Taxable Income		977
Income Tax (Expense) Benefit, Continuing Operations, Unused Foreign Income Tax Credit		638
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount		1,123
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount		1,753
Income Tax Holiday, Aggregate Dollar Amount		$ 1,100
Open Tax Year		2016 2017 2018 2019
Foreign Tax Authority [Member]
Operating Loss Carryforwards, Total		$ 25,400
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability		778
Foreign Tax Authority [Member] | Srilanka, Mauritius, and Argentina Tax Authorities [Member]
Operating Loss Carryforwards, Total		6,040
Domestic Tax Authority [Member]
Operating Loss Carryforwards, Total	$ 60,400	72,200	$ 60,400
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	$ 66,300	$ 43,160	$ 66,300