| Net sales |
$1,809,690 |
$1,830,140 |
$1,592,124 |
| Cost of sales |
(1,214,159) |
(1,214,061) |
(1,068,500) |
| Gross profit |
595,531 |
616,079 |
523,624 |
| Research and development costs |
(54,645) |
(49,615) |
(47,929) |
| Selling expenses |
(106,187) |
(107,308) |
(92,129) |
| General and administrative expenses |
(265,380) |
(262,594) |
(204,382) |
| Operating income |
169,319 |
196,562 |
179,184 |
| Interest expense |
(25,066) |
(29,045) |
(27,382) |
| Other income |
1,006 |
1,585 |
2,369 |
| Earnings before income taxes |
145,259 |
169,102 |
154,171 |
| Provision for income taxes |
(50,038) |
(59,712) |
(49,843) |
| Net earnings |
$95,221 |
$109,390 |
$104,328 |
| Net earnings per share: |
|
|
|
| Basic earnings per share |
$2.10 |
$2.45 |
$2.35 |
| Diluted earnings per share |
$2.08 |
$2.41 |
$2.32 |
| Weighted average shares outstanding: |
|
|
|
| Basic |
45,237 |
44,716 |
44,313 |
| Diluted |
45,695 |
45,374 |
44,979 |
