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Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Summary of Quarterly Financial Information | The following table sets forth our unaudited quarterly consolidated statements of operations for each of the last four quarters for the periods ended December 31, 2017 and 2016. This unaudited quarterly information has been prepared on the same basis as our annual audited financial statements and includes all adjustments, consisting only of normal recurring adjustments that are necessary to present fairly the financial information for the fiscal quarters presented.
2017: |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Revenue |  |  | 25,059 |  |  |  | 29,787 |  |  |  | 39,329 |  |  |  | 43,037 |
Cost of goods sold |  |  | 19,662 |  |  |  | 21,407 |  |  |  | 26,297 |  |  |  | 32,938 |
Operating expenses |  |  | 3,839 |  |  |  | 4,570 |  |  |  | 4,261 |  |  |  | 5,533 |
Net income |  |  | 969 |  |  |  | 2,624 |  |  |  | 7,047 |  |  |  | 10,886 |
Earnings per share, basic |  |  | 0.02 |  |  |  | 0.07 |  |  |  | 0.17 |  |  |  | 0.27 |
Earnings per share, diluted |  |  | 0.02 |  |  |  | 0.06 |  |  |  | 0.17 |  |  |  | 0.27 |
Weighted average number of shares outstanding, basic |  |  | 39,697 |  |  |  | 40,347 |  |  |  | 40,384 |  |  |  | 40,393 |
Weighted average number of shares outstanding, diluted |  |  | 39,874 |  |  |  | 40,453 |  |  |  | 40,416 |  |  |  | 40,435 |
2016: |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Revenue |  | $ | 10,359 |  |  | $ | 8,494 |  |  | $ | 10,927 |  |  | $ | 29,451 |
Cost of goods sold |  |  | 5,337 |  |  |  | 6,532 |  |  |  | 5,931 |  |  |  | 8,769 |
Operating expenses |  |  | 2,188 |  |  |  | 2,214 |  |  |  | 2,462 |  |  |  | 5,407 |
Net income (loss) |  |  | 382 |  |  |  | (2,348 | ) |  |  | (96 | ) |  |  | 12,441 |
Earnings (loss) per share, basic |  |  | 0.02 |  |  |  | (0.11 | ) |  |  | - |  |  |  | 0.40 |
Earnings (loss) per share, diluted |  |  | 0.01 |  |  |  | (0.11 | ) |  |  | - |  |  |  | 0.40 |
Weighted average number of shares outstanding, basic |  |  | 22,135 |  |  |  | 22,145 |  |  |  | 22,189 |  |  |  | 30,952 |
Weighted average number of shares outstanding, diluted |  |  | 26,410 |  |  |  | 22,145 |  |  |  | 22,189 |  |  |  | 31,210 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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