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Note 11. Income Taxes - Reconciliation of Effective Income Tax Rate (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Income Tax Reconciliation, Income Tax Expense (Benefit), Tax Computed at U.S. Federal Statutory Rate |  | $ 5,283 | $ 8,082 | $ 12,582
Effective Income Tax Rate Reconciliation, Tax Computed at U.S. Federal Statutory Rate | 35.00% | 21.00% | 21.00% | 28.10%
Income Tax Reconciliation, State Income Taxes, Net of Federal Income Tax Benefit |  | $ (1,128) | $ (320) | $ (408)
Effective Income Tax Rate Reconciliation, State Income Taxes, Net of Federal Income Tax Benefit |  | (4.50%) | (0.80%) | (0.90%)
Income Tax Reconciliation, Foreign Tax Effect |  | $ 714 | $ 313 | $ (1,615)
Effective Income Tax Rate Reconciliation, Foreign Tax Effect |  | 2.80% | 0.80% | (3.60%)
Income Tax Rate Reconciliation, Impact of Foreign Exchange Rates, Amount |  | $ 867 | $ 156 | $ 180
Effective Income Tax Rate Reconciliation Impact of Foreign Exchange Rates, Foreign, Percent |  | 3.40% | 0.40% | 0.40%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount |  | $ 388 | $ 0 | $ 0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent |  | 1.50% | 0.00% | 0.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount |  | $ 979 | $ 20 | $ 638
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent |  | 3.90% | 0.10% | 1.40%
Income Tax Reconciliation, Research Credit |  | $ (1,056) | $ (627) | $ (378)
Effective Income Tax Rate Reconciliation, Research Credit |  | (4.20%) | (1.60%) | (0.80%)
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Transition Tax on Accumulated Foreign Earnings, Amount |  | $ 0 | $ (416) | $ 13,436
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Transition Tax for Accumulated Foreign Earnings Adjustment, Provisional Income Tax Expense (Benefit), Amount |  | 0.000 | (0.011) | 0.300
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Net Deferred Tax Assets, Provisional Income Tax Expense (Benefit), Amount |  | $ 0 | $ (10) | $ 4,357
Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Change in Tax Rate, Net Deferred Tax Assets, Provisional Income Tax Expense (Benefit), Percent |  | 0.00% | 0.00% | 9.70%
Effective Income Tax Reconciliation Tax Cuts and Jobs Act 2017 Global Intangible Low-Taxed Income Provisions, Amount |  | $ 607 | $ 0 | $ 0
Effective Income Tax Reconciliation Tax Cuts and Jobs Act 2017 Global Intangible Low-Taxed Income Provisions, Percent |  | 2.40% | 0.00% | 0.00%
Income Tax Reconciliation, Other-Net |  | $ 307 | $ (271) | $ (769)
Effective Income Tax Rate Reconciliation, Other-Net |  | 1.40% | (0.80%) | (1.70%)
Provision for Income Taxes |  | $ 6,961 | $ 6,927 | $ 28,023
Effective Income Tax Rate |  | 27.70% | 18.00% | 62.60%

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