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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information | QUARTERLY FINANCIAL DATA (UNAUDITED) The tables below set forth consolidated operating results by fiscal quarter for the years ended December 31, 2017 and 2018 (in thousands, except earnings per share):
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2018 |  |  |  |  |  |  |
Revenue | $ | 73,387 |  |  | $ | 63,847 |  |  | $ | 64,241 |  |  | $ | 66,517 |
Gross profit | 24,188 |  |  | 16,825 |  |  | 17,114 |  |  | 17,820 |
Net income (loss) | $ | 9,356 |  |  | $ | 2,747 |  |  | $ | 2,200 |  |  | $ | (2,658 | )
Basic earnings per common share: (a) | $ | 0.58 |  |  | $ | 0.15 |  |  | $ | 0.11 |  |  | $ | (0.14 | )
Diluted earnings per common share: (a) | $ | 0.52 |  |  | $ | 0.15 |  |  | $ | 0.11 |  |  | $ | (0.14 | )
2017 |  |  |  |  |  |  |
Revenue | $ | 68,157 |  |  | $ | 63,852 |  |  | $ | 61,054 |  |  | $ | 65,076 |
Gross profit | 23,092 |  |  | 18,667 |  |  | 15,480 |  |  | 19,560 |
Net income | $ | 7,084 |  |  | $ | 4,410 |  |  | $ | 3,038 |  |  | $ | 22,661 |
Basic earnings per common share: (a) | $ | 0.42 |  |  | $ | 0.26 |  |  | $ | 0.18 |  |  | $ | 1.41 |
Diluted earnings per common share: (a) | $ | 0.39 |  |  | $ | 0.24 |  |  | $ | 0.17 |  |  | $ | 1.31 |
(a) | Earnings per share are computed independently for each of the quarters presented. Therefore, the sum of the quarterly per share amounts may not equal the total computed for 2017 and 2018 due to rounding.

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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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