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Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2018
Consolidated Statements of Operations Information for Each of Previous Eight Quarters |
|  | For the Years Ended December 31, 2018 |
|  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
|  | (Amounts in thousands, except per share data) |
Revenue |  | $ | 44,830 |  |  | $ | 47,731 |  |  | $ | 49,529 |  |  | $ | 51,942 |
Gross profit |  |  | 25,162 |  |  |  | 26,643 |  |  |  | 27,346 |  |  |  | 28,350 |
Operating expenses |  |  | 38,854 |  |  |  | 43,458 |  |  |  | 41,643 |  |  |  | 44,089 |
Net income |  |  | 3,448 |  |  |  | 2,738 |  |  |  | 4,794 |  |  |  | 5,638 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.08 |  |  | $ | 0.06 |  |  | $ | 0.11 |  |  | $ | 0.13 |
Diluted |  | $ | 0.08 |  |  | $ | 0.06 |  |  | $ | 0.10 |  |  | $ | 0.12 |
|  | For the Years Ended December 31, 2017 |
|  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
|  | (Amounts in thousands, except per share data) |
Revenue |  | $ | 30,590 |  |  | $ | 32,455 |  |  | $ | 36,580 |  |  | $ | 41,611 |
Gross profit |  |  | 16,600 |  |  |  | 18,518 |  |  |  | 16,593 |  |  |  | 22,475 |
Operating expenses |  |  | 24,914 |  |  |  | 26,982 |  |  |  | 36,986 |  |  |  | 38,349 |
Net income |  |  | 3,068 |  |  |  | 8,438 |  |  |  | 4,669 |  |  |  | 12,178 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.09 |  |  | $ | 0.25 |  |  | $ | 0.11 |  |  | $ | 0.28 |
Diluted |  | $ | 0.09 |  |  | $ | 0.24 |  |  | $ | 0.11 |  |  | $ | 0.27 |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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Namespace Prefix: | us-gaap_
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