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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Q2) (Parenthetical) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | --- | ---
Current assets |  |  |  |  |
Accounts receivable, reserve | $ 738 | $ 720 | $ 306 | $ 411 | $ 429
Inventories, obsolescence reserve | 861 | 860 | 520 | $ 1,484 | $ 1,672
Property and equipment, accumulated depreciation | $ 34,673 | $ 32,470 | $ 28,665 |  |

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