Consolidated Balance Sheets (Parenthetical) - $ / shares |
Dec. 31, 2021 |
Dec. 31, 2020 |
|---|---|---|
| Statement Of Financial Position [Abstract] | ||
| Common stock, shares par value | $ 0.06 | $ 0.06 |
| Common stock, shares authorized | 150,000,000 | 150,000,000 |
| Common stock, shares issued | 13,658,000 | 13,530,000 |
| Common stock, shares outstanding | 13,658,000 | 13,530,000 |
| Treasury stock, shares | 387,000 | 447,000 |