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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2017
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract] |
Selected Quarterly Financial Data | The following is a summary of the unaudited quarterly results of operations for the years ended December 31, 2017 and 2016 (in thousands, except per share data):
|  | 2017 Quarter Ended |
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |
Net sales |  | $ | 200,427 |  |  | $ | 196,829 |  |  | $ | 207,647 |  |  | $ | 214,962 |
Gross profit |  |  | 109,596 |  |  |  | 107,119 |  |  |  | 112,015 |  |  |  | 116,193 |
Credit service charges |  |  | 45 |  |  |  | 42 |  |  |  | 38 |  |  |  | 35 |
Income before taxes |  |  | 9,740 |  |  |  | 9,694 |  |  |  | 9,719 |  |  |  | 14,070 |
Net income |  |  | 5,986 |  |  |  | 6,185 |  |  |  | 5,983 |  |  |  | 2,921 |
Basic net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 0.28 |  |  |  | 0.29 |  |  |  | 0.28 |  |  |  | 0.14 |
Class A Common |  |  | 0.27 |  |  |  | 0.28 |  |  |  | 0.27 |  |  |  | 0.13 |
Diluted net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 0.28 |  |  |  | 0.29 |  |  |  | 0.28 |  |  |  | 0.13 |
Class A Common |  |  | 0.27 |  |  |  | 0.27 |  |  |  | 0.27 |  |  |  | 0.13 |
|  | 2016 Quarter Ended |
|  | March 31 |  |  | June 30 |  |  | September 30 |  |  | December 31 |
Net sales |  | $ | 194,511 |  |  | $ | 194,774 |  |  | $ | 211,690 |  |  | $ | 220,595 |
Gross profit |  |  | 104,419 |  |  |  | 104,160 |  |  |  | 113,737 |  |  |  | 121,020 |
Credit service charges |  |  | 65 |  |  |  | 54 |  |  |  | 54 |  |  |  | 56 |
Income before taxes |  |  | 7,587 |  |  |  | 8,762 |  |  |  | 12,125 |  |  |  | 17,347 |
Net income |  |  | 4,669 |  |  |  | 5,374 |  |  |  | 7,336 |  |  |  | 10,947 |
Basic net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 0.21 |  |  |  | 0.25 |  |  |  | 0.35 |  |  |  | 0.52 |
Class A Common |  |  | 0.20 |  |  |  | 0.24 |  |  |  | 0.33 |  |  |  | 0.50 |
Diluted net earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common |  |  | 0.21 |  |  |  | 0.24 |  |  |  | 0.34 |  |  |  | 0.51 |
Class A Common |  |  | 0.20 |  |  |  | 0.23 |  |  |  | 0.33 |  |  |  | 0.51 |

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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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