| Schedule of Quarterly Financial Information |
QUARTERLY FINANCIAL DATA (UNAUDITED) (in thousands, except per share amounts) | | | | | | | | | | | | | | | | | | | | Three Months Ended | | | December 31, 2018 | | September 30, 2018 | | June 30, 2018 | | March 31, 2018 | Sales | | $ | 54,364 |
| | $ | 41,410 |
| | $ | 55,176 |
| | $ | 57,320 |
| Cost of Goods Sold | | $ | 26,504 |
| | $ | 23,370 |
| | $ | 35,426 |
| | $ | 36,655 |
| Lower of cost or NRV inventory adjustments | | $ | 930 |
| | $ | — |
| | $ | 76 |
| | $ | 705 |
| Gross Margin | | $ | 14,826 |
| | $ | 8,959 |
| | $ | 7,286 |
| | $ | 7,200 |
| Net Income (Loss) | | $ | 7,634 |
| | $ | 3,350 |
| | $ | (958 | ) | | $ | 1,757 |
| Basic and Diluted Earnings
(Loss) Per Share | | $ | 0.06 |
| | $ | 0.03 |
| | $ | (0.01 | ) | | $ | 0.01 |
|
| | | | | | | | | | | | | | | | | | | | Three Months Ended | | | December 31, 2017 | | September 30, 2017 | | June 30, 2017 | | March 31, 2017 | Sales | | $ | 42,582 |
| | $ | 36,484 |
| | $ | 47,347 |
| | $ | 51,502 |
| Cost of Goods Sold | | $ | 26,481 |
| | $ | 21,414 |
| | $ | 31,735 |
| | $ | 38,332 |
| Lower of cost or NRV inventory adjustments | | $ | 1,571 |
| | $ | 666 |
| | $ | 317 |
| | $ | 3,825 |
| Gross Margin (Deficit) | | $ | 3,628 |
| | $ | 6,062 |
| | $ | 4,803 |
| | $ | (2,605 | ) | Net Loss | | $ | (1,636 | ) | | $ | (1,445 | ) | | $ | (5,819 | ) | | $ | (13,667 | ) | Basic and Diluted
Loss Per Share | | $ | (0.01 | ) | | $ | (0.01 | ) | | $ | (0.05 | ) | | $ | (0.17 | ) |
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