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CONSOLIDATED BALANCE SHEETS (FY) (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Current assets |  |
Accounts receivable, reserve | $ 720 | $ 306
Inventories, obsolescence reserve | $ 860 | $ 520
Class A Common Stock [Member] |  |
Telos stockholders' deficit |  |
Common stock, par value (in dollars per share) | $ 0 |
Common stock, shares authorized (in shares) | 50,000,000 |
Common stock, shares issued (in shares) | 45,143,460 | 45,158,460
Class B Common Stock [Member] |  |
Telos stockholders' deficit |  |
Common stock, par value (in dollars per share) | $ 0 |
Common stock, shares authorized (in shares) | 5,000,000 |
Common stock, shares issued (in shares) | 4,037,628 |

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