Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive Loss | Noncontrolling Interests |
Beginning balance (in shares) at Dec. 31, 2020 | | 16,148,791 | | | | | |
Beginning balance at Dec. 31, 2020 | $ 357.9 | $ 16.1 | $ 135.5 | $ 290.5 | $ (79.8) | $ (18.1) | $ 13.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 1.3 | | | 5.5 | | (4.1) | (0.1) |
Stock-based compensation expense | 1.6 | | 1.6 | | | | |
Stock-based compensation activity (in shares) | | 6,667 | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Increase in Park-Ohio ownership interest | 0 | | 1.1 | | | | (1.1) |
Payments of withholding taxes on share awards | (0.1) | | | | (0.1) | | |
Ending balance (in shares) at Mar. 31, 2021 | | 16,142,124 | | | | | |
Ending balance at Mar. 31, 2021 | 359.1 | $ 16.1 | 138.2 | 294.4 | (79.9) | (22.2) | 12.5 |
Beginning balance (in shares) at Dec. 31, 2020 | | 16,148,791 | | | | | |
Beginning balance at Dec. 31, 2020 | 357.9 | $ 16.1 | 135.5 | 290.5 | (79.8) | (18.1) | 13.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (15.1) | | | | | | |
Ending balance (in shares) at Sep. 30, 2021 | | 16,319,370 | | | | | |
Ending balance at Sep. 30, 2021 | 337.7 | $ 16.3 | 141.1 | 278.8 | (84.9) | (25.7) | 12.1 |
Beginning balance (in shares) at Mar. 31, 2021 | | 16,142,124 | | | | | |
Beginning balance at Mar. 31, 2021 | 359.1 | $ 16.1 | 138.2 | 294.4 | (79.9) | (22.2) | 12.5 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (3.7) | | | (5.3) | | 1.8 | (0.2) |
Stock-based compensation expense | 1.4 | | 1.4 | | | | |
Stock-based compensation activity (in shares) | | 174,746 | | | | | |
Stock-based compensation activity | 0 | $ 0.2 | (0.2) | | | | |
Dividends | (1.5) | | | (1.5) | | | |
Payments of withholding taxes on share awards | (2.1) | | | | (2.1) | | |
Ending balance (in shares) at Jun. 30, 2021 | | 16,316,870 | | | | | |
Ending balance at Jun. 30, 2021 | 353.2 | $ 16.3 | 139.4 | 287.6 | (82) | (20.4) | 12.3 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (12.7) | | | (7.2) | | (5.3) | (0.2) |
Stock-based compensation expense | 1.7 | | 1.7 | | | | |
Stock-based compensation activity (in shares) | | 2,500 | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Purchases of treasury stock | (2.5) | | | | (2.5) | | |
Payments of withholding taxes on share awards | (0.4) | | | | (0.4) | | |
Ending balance (in shares) at Sep. 30, 2021 | | 16,319,370 | | | | | |
Ending balance at Sep. 30, 2021 | 337.7 | $ 16.3 | 141.1 | 278.8 | (84.9) | (25.7) | 12.1 |
Beginning balance (in shares) at Dec. 31, 2021 | | 16,339,722 | | | | | |
Beginning balance at Dec. 31, 2021 | 324.8 | $ 16.3 | 142.9 | 259.4 | (85.3) | (19.2) | 10.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 3.2 | | | 6.1 | | (3.1) | 0.2 |
Stock-based compensation expense | 1.6 | | 1.6 | | | | |
Stock-based compensation activity (in shares) | | 5,502 | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Payments of withholding taxes on share awards | (0.1) | | | | (0.1) | | |
Ending balance (in shares) at Mar. 31, 2022 | | 16,334,220 | | | | | |
Ending balance at Mar. 31, 2022 | 327.9 | $ 16.3 | 144.5 | 263.9 | (85.4) | (22.3) | 10.9 |
Beginning balance (in shares) at Dec. 31, 2021 | | 16,339,722 | | | | | |
Beginning balance at Dec. 31, 2021 | 324.8 | $ 16.3 | 142.9 | 259.4 | (85.3) | (19.2) | 10.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (23.9) | | | | | | |
Ending balance (in shares) at Sep. 30, 2022 | | 16,650,338 | | | | | |
Ending balance at Sep. 30, 2022 | 299.6 | $ 16.6 | 148 | 264.4 | (86.6) | (54) | 11.2 |
Beginning balance (in shares) at Mar. 31, 2022 | | 16,334,220 | | | | | |
Beginning balance at Mar. 31, 2022 | 327.9 | $ 16.3 | 144.5 | 263.9 | (85.4) | (22.3) | 10.9 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (13.3) | | | 1 | | (14.8) | 0.5 |
Stock-based compensation expense | 1.8 | | 1.8 | | | | |
Stock-based compensation activity (in shares) | | 308,621 | | | | | |
Stock-based compensation activity | 0 | $ 0.3 | (0.3) | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Payments of withholding taxes on share awards | (1) | | | | (1) | | |
Ending balance (in shares) at Jun. 30, 2022 | | 16,642,841 | | | | | |
Ending balance at Jun. 30, 2022 | 313.8 | $ 16.6 | 146 | 263.3 | (86.4) | (37.1) | 11.4 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (13.8) | | | 2.7 | 0 | (16.9) | 0.4 |
Stock-based compensation expense | 2 | | 2 | | | | |
Stock-based compensation activity (in shares) | | 7,497 | | | | | |
Dividends | (2.2) | | | (1.6) | | | (0.6) |
Payments of withholding taxes on share awards | (0.2) | | | | (0.2) | | |
Ending balance (in shares) at Sep. 30, 2022 | | 16,650,338 | | | | | |
Ending balance at Sep. 30, 2022 | $ 299.6 | $ 16.6 | $ 148 | $ 264.4 | $ (86.6) | $ (54) | $ 11.2 |