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Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2020
QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract] |
Quarterly Financial Information Disclosure | QUARTERLY FINANCIAL DATA (UNAUDITED) Quarterly financial data for the years ended December 31, 2020 and 2019 are as follows:
| First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2020 |  |  |  |  |  |  |
Net sales | $ | 649,162 |  |  | $ | 690,673 |  |  | $ | 807,357 |  |  | $ | 937,985 |
Gross profit | $ | 374,409 |  |  | $ | 397,970 |  |  | $ | 469,608 |  |  | $ | 559,044 |
Net earnings | $ | 98,115 |  |  | $ | 126,562 |  |  | $ | 161,767 |  |  | $ | 216,295 |
Basic earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 4.08 |  |  | $ | 5.29 |  |  | $ | 6.76 |  |  | $ | 9.15 |
Weighted average number of common shares | 24,027,833 |  |  | 23,940,278 |  |  | 23,922,272 |  |  | 23,642,415 |
Diluted earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 4.03 |  |  | $ | 5.22 |  |  | $ | 6.68 |  |  | $ | 9.03 |
Weighted average number of common and common equivalent shares | 24,353,477 |  |  | 24,228,989 |  |  | 24,225,204 |  |  | 23,965,853 |
Market price per share: |  |  |  |  |  |  |
High | $ | 835.13 |  |  | $ | 859.54 |  |  | $ | 1,005.15 |  |  | $ | 1,193.36 |
Low | $ | 589.41 |  |  | $ | 630.58 |  |  | $ | 804.79 |  |  | $ | 966.92 |
2019 |  |  |  |  |  |  |
Net sales | $ | 679,452 |  |  | $ | 731,366 |  |  | $ | 753,866 |  |  | $ | 843,968 |
Gross profit | $ | 388,319 |  |  | $ | 419,538 |  |  | $ | 435,056 |  |  | $ | 498,298 |
Net earnings(a) | $ | 111,805 |  |  | $ | 127,160 |  |  | $ | 129,395 |  |  | $ | 192,749 |
Basic earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 4.50 |  |  | $ | 5.15 |  |  | $ | 5.28 |  |  | $ | 7.95 |
Weighted average number of common shares | 24,851,340 |  |  | 24,698,032 |  |  | 24,487,268 |  |  | 24,241,383 |
Diluted earnings per common share: |  |  |  |  |  |  |
Net earnings | $ | 4.42 |  |  | $ | 5.06 |  |  | $ | 5.20 |  |  | $ | 7.84 |
Weighted average number of common and common equivalent shares | 25,310,525 |  |  | 25,118,352 |  |  | 24,880,179 |  |  | 24,599,702 |
Market price per share: |  |  |  |  |  |  |
High | $ | 729.72 |  |  | $ | 840.00 |  |  | $ | 872.45 |  |  | $ | 793.31 |
Low | $ | 513.56 |  |  | $ | 701.80 |  |  | $ | 642.84 |  |  | $ | 658.61 |
(a) Net earnings includes a non-cash deferred net benefit of $15.8 million for the three months ended December 31, 2019 related to the enactment of Swiss tax reform.

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- Definition QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract] + References No definition available. + Details
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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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