| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues | 234.7 | 383.9 | 447.1 | 460.0 | 467.0 | 447.4 | 412.2 | 383.9 |
| Revenue growth | -38.9% | -14.1% | -2.8% | -1.5% | 4.4% | 8.6% | 7.4% | 9.6% |
| Cost of goods sold [+] | 157.3 | 254.6 | 310.6 | 354.2 | 347.1 | 335.6 | 309.9 | 230.5 |
| Lease costs | | | | 56.6 | 56.4 | 61.7 | 61.2 | 59.3 |
| Reimbursable costs | | | | | | | | 3.1 |
| Gross profit | 77.4 | 129.2 | 136.5 | 105.8 | 119.9 | 111.8 | 102.2 | 153.4 |
| Gross margin | 33.0% | 33.7% | 30.5% | 23.0% | 25.7% | 25.0% | 24.8% | 40.0% |
| Selling, general and administrative [+] | 29.5 | 27.9 | 27.5 | 27.0 | 23.6 | 23.7 | 20.4 | 19.6 |
| General and administrative [+] | 29.5 | 27.9 | 27.5 | 27.0 | 23.6 | 23.7 | 20.4 | 19.6 |
| General and administrative expenses | 29.5 | 27.9 | 27.5 | 27.0 | 23.6 | 23.7 | 20.4 | 19.6 |
| Rent expense | | | | | | | | 59.3 |
| Equity in earnings | | | | | | | | 0.1 |
| Other operating expenses | -350.6 | 455.1 | -3.8 | 33.8 | 9.6 | 13.4 | 10.0 | 70.2 |
| EBITDA [+] | 398.5 | -353.7 | 112.9 | 45.0 | 86.8 | 74.8 | 71.9 | 63.7 |
| EBITDA growth | -212.7% | -413.4% | 150.6% | -48.1% | 16.0% | 4.1% | 12.8% | 13.6% |
| EBITDA margin | 169.8% | -92.2% | 25.2% | 9.8% | 18.6% | 16.7% | 17.4% | 16.6% |
| Depreciation and amortization | 37.9 | 60.3 | 64.2 | 62.8 | 66.2 | 60.4 | 53.0 | 49.5 |
| EBIT [+] | 360.7 | -414.0 | 48.7 | -17.8 | 20.6 | 14.4 | 18.8 | 14.2 |
| EBIT growth | -187.1% | -950.5% | -373.8% | -186.4% | 43.0% | -23.6% | 32.4% | 10.8% |
| EBIT margin | 153.7% | -107.9% | 10.9% | -3.9% | 4.4% | 3.2% | 4.6% | 3.7% |
| Non-recurring items [+] | 6.1 | -163.6 | 39.5 | | 12.7 | | | 0.2 |
| Asset impairment | 6.5 | 41.8 | 3.0 | | | | | -0.6 |
| Loss (gain) on sale of assets | -0.4 | -205.5 | 36.5 | | -0.1 | | | 0.8 |
| Loss on contract termination | | | | | 12.9 | | | |
| Interest expense, net [+] | 37.2 | 44.4 | 49.6 | 50.4 | 49.4 | 42.1 | 35.7 | 31.2 |
| Interest expense | 37.2 | 44.6 | 49.8 | 50.5 | 49.5 | 42.2 | 35.7 | 31.3 |
| Interest income | 0.0 | 0.2 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 |
| Other income (expense), net [+] | -191.2 | -0.2 | 4.9 | 12.8 | -0.1 | 0.2 | 3.5 | -6.2 |
| Gain (loss) on sale of assets | | | | 0.0 | | -0.1 | 6.2 | |
| Gain (loss) on debt retirement | 199.9 | | -4.8 | -12.6 | | | -2.8 | -8.0 |
| Write-off of deferred debt issuance costs | | | -4.8 | -12.6 | | | -2.8 | -8.0 |
| Extraordinary gain | | | | | | | | 1.5 |
| Other | 8.7 | -0.2 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 |
| Pre-tax income | 126.2 | -295.0 | -35.6 | -55.4 | -41.7 | -27.6 | -13.4 | -23.4 |
| Income taxes | 0.6 | 0.4 | 0.4 | -1.8 | 2.5 | 0.4 | 0.9 | 0.7 |
| Tax rate | 0.5% | | | 3.2% | | | | |
| Net income | 111.4 | -295.4 | -36.0 | -53.6 | -44.2 | -28.0 | -14.3 | -24.1 |
| Net margin | 47.5% | -76.9% | -8.1% | -11.7% | -9.5% | -6.3% | -3.5% | -6.3% |
| |
| Basic EPS [+] | $40.51 | ($144.08) | ($17.87) | ($26.97) | ($1.50) | ($0.97) | ($0.50) | ($0.85) |
| Growth | -128.1% | 706.2% | -33.7% | 1698.7% | 54.7% | 94.6% | -41.6% | 43.7% |
| Diluted EPS [+] | $40.18 | ($144.08) | ($17.87) | ($26.97) | ($1.50) | ($0.97) | ($0.50) | ($0.85) |
| Growth | -127.9% | 706.2% | -33.7% | 1698.7% | 54.7% | 94.6% | -41.6% | 43.7% |
| |
| Shares outstanding (basic) [+] | 2.8 | 2.1 | 2.0 | 2.0 | 29.5 | 28.9 | 28.7 | 28.3 |
| Growth | 34.1% | 1.7% | 1.5% | -93.3% | 1.9% | 0.8% | 1.4% | 1.7% |
| Shares outstanding (diluted) [+] | 2.8 | 2.1 | 2.0 | 2.0 | 29.5 | 28.9 | 28.7 | 28.3 |
| Growth | 35.3% | 1.7% | 1.5% | -93.3% | 1.9% | 0.8% | 1.4% | 1.7% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |