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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2017
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, 2016 and 2017 (in thousands, except earnings per share):
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2017 |  |  |  |  |  |  |
Revenues | $ | 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 |
2016 |  |  |  |  |  |  |
Revenues | $ | 63,331 |  |  | $ | 61,865 |  |  | $ | 60,140 |  |  | $ | 62,864 |
Gross profit | 21,303 |  |  | 18,807 |  |  | 18,228 |  |  | 21,312 |
Net income | $ | 4,571 |  |  | $ | 5,200 |  |  | $ | 5,683 |  |  | $ | 4,127 |
Basic earnings per common share: (a) | $ | 0.27 |  |  | $ | 0.31 |  |  | $ | 0.34 |  |  | $ | 0.25 |
Diluted earnings per common share: (a) | $ | 0.27 |  |  | $ | 0.30 |  |  | $ | 0.33 |  |  | $ | 0.22 |
(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 2016 and 2017 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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