CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions |
Jun. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Current assets: | ||
| Allowance for doubtful accounts | $ 2.4 | $ 3.9 |
| Stockholders’ equity: | ||
| Common stock, par or stated value per share (in dollars per share) | $ 0.01 | $ 0.01 |
| Common stock, shares authorized (in shares) | 200,000,000 | 200,000,000 |
| Common stock, shares issued (in shares) | 35,367,264 | 35,367,264 |
| Treasury stock, shares (in shares) | 1,330,806 | 1,407,926 |