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Summarized Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Summarized Quarterly Financial Data (Unaudited) | Note 17 – Summarized Quarterly Financial Data (Unaudited) The following table presents unaudited quarterly operating results for each of our last eight fiscal quarters. This information has been prepared on a basis consistent with our audited financial statements and includes all adjustments, consisting only of normal recurring adjustments, considered necessary for a fair presentation of the data. Unaudited Quarterly Operating Results (In thousands, except for per share amounts)
Three Months Ended |  | March 31, 2018 |  |  | June 30, 2018 |  |  | September 30, 2018 |  |  | December 31, 2018 |
Net sales |  | $ | 120,806 |  |  | $ | 128,048 |  |  | $ | 140,335 |  |  | $ | 140,088 |
Gross profit |  | $ | 39,733 |  |  | $ | 49,996 |  |  | $ | 58,448 |  |  | $ | 55,388 |
Operating income (loss) |  | $ | (26,647 | ) |  | $ | (12,813 | ) |  | $ | (2,179 | ) |  | $ | (3,783 | )
Net income (loss) |  | $ | (10,814 | ) |  | $ | (7,670 | ) |  | $ | 7,589 |  |  | $ | (8,447 | )
Earnings (loss) per common share - basic |  | $ | (0.22 | ) |  | $ | (0.16 | ) |  | $ | 0.16 |  |  | $ | (0.18 | )
Earnings (loss) per common share – diluted (1) |  | $ | (0.22 | ) |  | $ | (0.16 | ) |  | $ | 0.16 |  |  | $ | (0.18 | )
Three Months Ended |  | March 31, 2017 |  |  | June 30, 2017 |  |  | September 30, 2017 |  |  | December 31, 2017 |
Net sales |  | $ | 170,279 |  |  | $ | 184,673 |  |  | $ | 185,112 |  |  | $ | 126,836 |
Gross profit |  | $ | 73,709 |  |  | $ | 84,626 |  |  | $ | 86,491 |  |  | $ | 58,809 |
Operating income (loss) |  | $ | 6,949 |  |  | $ | 16,363 |  |  | $ | 18,227 |  |  | $ | (4,153 | )
Net income (loss) |  | $ | 6,651 |  |  | $ | 12,401 |  |  | $ | 15,898 |  |  | $ | (11,110 | )
Earnings (loss) per common share - basic |  | $ | 0.14 |  |  | $ | 0.26 |  |  | $ | 0.33 |  |  | $ | (0.23 | )
Earnings (loss) per common share – diluted (1) |  | $ | 0.14 |  |  | $ | 0.26 |  |  | $ | 0.33 |  |  | $ | (0.23 | )
| (1) | Assumes exercise of dilutive securities calculated under the treasury stock method.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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