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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2020
Income Tax Disclosure [Abstract] |
Loss from Continuing Operations Before Provision for Income Taxes | The components of loss from continuing operations before provision for income taxes consist of the following (in thousands):
|  | Years ended December 31, |
|  | 2019 |  |  | 2020 |
United States |  | $ | (12,619 | ) |  | $ | (38,622 | )
Foreign |  |  | (589 | ) |  |  | (5,313 | )
Loss from continuing operations before provision for income taxes |  | $ | (13,208 | ) |  | $ | (43,935 | )
Provision for Income Taxes | The provision for income taxes for the Company’s continuing operations consists of the following (in thousands):
|  | Years ended December 31, |
|  | 2019 |  | 2020 |
Current federal provision |  |  |  |  |  |  |
Federal |  | $ | — |  | $ | — |
State |  |  | — |  |  | 21 |
Deferred provision (benefit) |  |  |  |  |  |  |
Federal |  |  | (2,531 | ) |  | (901 | )
State |  |  | (397 | ) |  | (153 | )
Foreign |  |  | (548 | ) |  | (884 | )
Total income tax benefit |  | $ | (3,476 | ) | $ | (1,917 | )
Computation of Income Tax Benefit from Continuing Operations Using Federal Statutory Rate | The Company’s income tax benefit from continuing operations differed from the amounts computed by applying the U.S. federal statutory rate to loss before provision for income taxes as a result of the following (in thousands):
| Years ended December 31, |
| 2019 |  | 2020 |
Income tax benefit at U.S. statutory rate | $ | (2,771 | ) | $ | (9,226 | )
State taxes, net of valuation allowance |  | (314 | ) |  | (103 | )
Stock-based compensation (1) |  | 75 |  |  | 154 |
Valuation allowance |  | 306 |  |  | 7,427 |
Foreign tax differential |  | (101 | ) |  | (1,124 | )
Tax credits |  | (279 | ) |  | (167 | )
Impairment |  | — |  |  | 1,410 |
Acquisition/accretion benefits |  | (428 | ) |  | (250 | )
Meals and entertainment |  | 59 |  |  | 1 |
Other expenses |  | (23 | ) |  | (39 | )
Total income tax benefit | $ | (3,476 | ) | $ | (1,917 | )
| (1) | Includes non-deductible stock-based compensation and excess tax benefits and shortfalls from stock-based compensation.
Schedule of Deferred Tax Assets and Liabilities | The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are presented below and reflects the 21% U.S. federal statutory rate for 2019 and 2020 (in thousands):
|  | Years ended December 31, |
|  | 2019 |  | 2020 |
Deferred tax assets: |  |  |  |  |  |  |
Accrued liabilities not currently deductible |  | $ | 381 |  | $ | 651 |
Intangible assets- excess of financial statement over tax amortization |  |  | 139 |  |  | 982 |
Goodwill recognized on financial statements in excess of tax amortization |  |  | 601 |  |  | (18 | )
Stock-based compensation |  |  | 2,033 |  |  | 2,524 |
Federal net operating and capital losses |  |  | 3,499 |  |  | 21,531 |
State, local and foreign net operating and capital loss carryforwards |  |  | 7,133 |  |  | 12,325 |
Research & experimental tax and other credit carryforwards |  |  | 4,129 |  |  | 4,640 |
Lease liability |  |  | 1,899 |  |  | 1,250 |
Other |  |  | 912 |  |  | 735 |
Gross deferred tax assets |  |  | 20,726 |  |  | 44,620 |
Valuation allowance |  |  | (19,126 | ) |  | (43,314 | )
Net deferred tax assets |  | $ | 1,600 |  | $ | 1,306 |
Deferred tax liabilities: |  |  |  |  |  |  |
Intangible assets-excess of tax over financial statement amortization |  |  | (1,044 | ) |  | (532 | )
Right-of-use lease asset |  |  | (1,537 | ) |  | (930 | )
Net deferred tax liabilities |  | $ | (981 | ) | $ | (156 | )
Summary of Activity Related to Tax Contingencies Recorded As an Offset to Deferred Tax Assets | The following table summarizes activity related to tax contingencies from January 1, 2019 to December 31, 2020 which are recorded as an offset to deferred tax assets (in thousands):
Gross tax contingencies—January 1, 2019 |  | $ | 1,158 |
Gross increases to tax positions associated with prior periods |  |  | — |
Gross increases to current period tax positions |  |  | 110 |
Gross decreases to tax positions associated with prior periods |  |  | — |
Settlements |  |  | — |
Lapse of statute of limitations |  |  | — |
Gross tax contingencies—December 31, 2019 |  |  | 1,268 |
Gross increases to tax positions associated with prior periods |  |  | — |
Gross increases to current period tax positions |  |  | 97 |
Gross decreases to tax positions associated with prior periods |  |  | — |
Settlements |  |  | — |
Lapse of statute of limitations |  |  | — |
Gross tax contingencies—December 31, 2020 |  | $ | 1,365 |

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