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Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2020
Accounting Policies [Abstract] |
Disaggregation of revenue | The following table provides a disaggregation of product net sales for the periods presented (in thousands):
| Three months ended March 31, |  |  |  |  |  |
| 2020 |  | 2019 |  |  |  |
Net sales: |  |  |  |  |  |  |
Commercial | $ | 1,736 |  |  | $ | 1,983 |  |  |  |  |
MMM products | 2,047 |  |  | 1,194 |  |  |  |  |
Total net sales | $ | 3,783 |  |  | $ | 3,177 |  |  |  |  |
Reconciliation of basic and diluted income (loss) per share | The following table presents a reconciliation of basic and diluted loss per share computations (in thousands):
| Three months ended March 31, |  |  |  |  |  |
| 2020 |  | 2019 |  |  |  |
Numerator: |  |  |  |  |  |  |
Net loss | $ | (541) |  |  | $ | (2,865) |  |  |  |  |
Denominator: |  |  |  |  |  |  |
Basic weighted average common shares outstanding | 15,430 |  |  | 12,126 |  |  |  |  |
Schedule of warranty activity | The following table summarizes warranty activity for the periods presented (in thousands):
| Three months ended March 31, |  |  |  |  |  |
| 2020 |  | 2019 |  |  |  |
Balance at beginning of period | $ | 195 |  |  | $ | 258 |  |  |  |  |
Warranty accruals for current period sales | 7 |  |  | 12 |  |  |  |  |
Adjustments to existing warranties | 44 |  |  | 89 |  |  |  |  |
In kind settlements made during the period | (6) |  |  | (7) |  |  |  |  |
Accrued warranty reserve | $ | 240 |  |  | $ | 352 |  |  |  |  |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table provides a summary of the financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2020 (in thousands):
|  |  | Fair Value Measurements at March 31, 2020 Using |  |  |  |  |
| Balance as of |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |
Description | March 31, 2020 |  |  |  |  |  |  |
Warrant liabilities | $ | 763 |  |  | $ | — |  |  | $ | — |  |  | $ | 763 |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation | A roll-forward of fair value measurements using significant unobservable inputs (Level 3) for the warrants is as follows (in thousands):
| Three months ended March 31, 2020
Balance January 1, 2020 | $ | — |
Issuance of warrants January 2020 | 1,636 |
Income from change in fair value of warrants | (873) |
Balance March 31, 2020 | $ | 763 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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