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Income Taxes - Reconciliation of the Difference between Expected Income Tax Expense (Benefit) from Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Income tax benefit computed at statutory rate $ (212) $ 840
Items not deductible for tax purposes 297 437
Change in valuation allowance 514 (79)
Impact of Tax Reform Act 0 170
State taxes 443 576
Foreign exchange rate difference (330) (80)
Net operating loss adjustments 246 421
Prior year return-to-provision true-up (446) 426
Other 649 59
Provision for income taxes $ 1,161 $ 2,770