In millions, except per share items | Jun-30-23 | Jun-05-23 | Mar-31-23 | Dec-05-22 | Jun-30-22 | Jun-05-22 | Mar-31-22 | Dec-31-21 |
| 10-Q | 8-K | 10-Q | 8-K | 10-Q | 8-K | 10-Q | 10-K |
Net sales | 577.2 | 577.2 | 513.4 | 482.6 | 502.5 | 502.5 | 459.3 | 405.3 |
Net sales growth | 14.9% | 14.9% | 11.8% | 19.1% | 13.9% | | 12.7% | 3.1% |
Cost of sales | 464.7 | | 409.3 | | 419.4 | | 370.3 | 332.4 |
Depreciation and amortization | 14.4 | | 14.0 | 11.6 | 13.4 | | 14.2 | |
(Gain) on sale of assets | | | -1.8 | | | | -2.5 | 7.8 |
|
Impairment and restructuring charges | | | | | | | | |
Selling, general and administrative expenses | 43.7 | 43.7 | 41.6 | 36.9 | 40.6 | 40.6 | 39.1 | |
Operating profit | 54.4 | 54.4 | 50.3 | 27.6 | 29.1 | 29.1 | 38.2 | 10.8 |
Operating margin | 9.4% | 9.4% | 9.8% | 5.7% | 5.8% | 5.8% | 8.3% | 2.7% |
Other income, net | 0.2 | | 0.2 | -0.7 | 0.4 | | 3.0 | -3.1 |
Interest expense | -20.3 | -20.3 | -14.0 | -12.5 | -11.1 | -11.1 | -9.8 | |
Income from continuing operations before income taxes | 34.3 | | 36.1 | | 18.4 | | 29.0 | 34.6 |
Income tax provision | 9.9 | 9.9 | 9.9 | 1.9 | 6.8 | 6.8 | 9.7 | 12.1 |
Income from continuing operations | 24.4 | | 26.2 | | 11.6 | | 19.3 | 22.3 |
Loss on sale of discontinued operations | | | | | | | -0.5 | -0.2 |
Net income | 24.4 | | 26.2 | | 11.6 | | 38.1 | 22.2 |
Net income (loss) attributable to noncontrolling interests | -0.1 | -0.1 | 0.7 | | -0.1 | -0.1 | | 0.3 |
Net income attributable to Koppers | 24.5 | 24.4 | 25.5 | 13.8 | 11.7 | 11.6 | 18.8 | 22.2 |
|
Earnings (loss) per common share attributable to Koppers common shareholders: | | | | | | | | |
Basic - | | | | | | | | |
Continuing operations | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Discontinued operations | | | | 0.0 | | | 0.0 | 0.0 |
|
Earnings per basic common share | $1.17 | $1.17 | $1.22 | $0.66 | $0.56 | $0.56 | $0.89 | $1.03 |
|
Diluted - | | | | | | | | |
Continuing operations | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Discontinued operations | | | | 0.0 | | | 0.0 | 0.0 |
Earnings per diluted common share | $1.15 | $1.15 | $1.19 | $0.65 | $0.55 | $0.55 | $0.87 | $1.01 |
|
Comprehensive income (loss) | | | | | | | | |
Comprehensive income (loss) attributable to noncontrolling interests | | | | | | | | |
Comprehensive income (loss) attributable to Koppers | 19.0 | 18.7 | 33.2 | | -38.6 | -38.8 | 20.5 | 15.3 |
|
Weighted average shares outstanding (in thousands): | | | | | | | | |
Basic | 20.8 | 20.8 | 20.8 | 20.8 | 21.0 | 21.0 | 21.2 | 21.2 |
Diluted | 21.4 | 21.4 | 21.4 | 21.2 | 21.2 | 21.2 | 21.7 | 21.9 |