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Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Jun. 30, 2018
--- | --- | --- | --- | ---
Deferred tax assets: |  |  |  |
Net operating loss carryforwards | $ 17,248 |  | $ 30,241 |
Allowance for doubtful accounts | 1,037 |  | 1,073 |
Inventory valuation reserves | 629 |  | 1,057 |
Equity compensation | 353 |  | 548 |
Goodwill | 965 |  | 1,089 |
Accrued compensation | 587 |  | 342 |
Foreign tax credit carryforward | 3,894 |  | 4,041 |
Settlement liability | 3,530 |  | 0 |
Lease liability | 3,992 |  | 0 |
Interest expense limitation | 0 |  | 534 |
Other | 96 |  | 50 |
Total gross deferred tax assets | 32,331 |  | 38,975 |
Valuation allowance | (19,878) |  | (4,042) | $ (15,500)
Total deferred tax assets, net | 12,453 |  | 34,933 |
Deferred tax liabilities: |  |  |  |
Property and equipment | (3,696) |  | (6,613) |
Intangible assets | (4,597) |  | (9,657) |
ROU asset | (3,793) |  | 0 |
Prepaid insurance and other | (331) |  | 0 |
Total gross deferred tax liabilities | (12,417) |  | (16,270) |
Net deferred tax assets | $ 36 | $ 18,700 | $ 18,663 |

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