Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($) $ in Millions | Total | Common Stock | Additional Paid-In Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive (Loss) Income | Noncontrolling Interests |
Beginning balance (in shares) at Dec. 31, 2018 | | 15,555,275 | | | | | |
Beginning balance at Dec. 31, 2018 | $ 312.6 | $ 15.6 | $ 125.7 | $ 265.9 | $ (67.3) | $ (40.9) | $ 13.6 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 17.7 | | | 11.2 | | 6 | 0.5 |
Stock-based compensation expense | 1.9 | | 1.9 | | | | |
Stock-based compensation activity (in shares) | | 38,000 | | | | | |
Stock-based compensation activity | 0 | | | | | | |
Dividends | (1.9) | | | (1.6) | | | (0.3) |
Payments of withholding taxes on share awards | (1) | | | | (1) | | |
Ending balance (in shares) at Mar. 31, 2019 | | 15,593,275 | | | | | |
Ending balance at Mar. 31, 2019 | 329.3 | $ 15.6 | 127.6 | 275.5 | (68.3) | (34.9) | 13.8 |
Beginning balance (in shares) at Dec. 31, 2018 | | 15,555,275 | | | | | |
Beginning balance at Dec. 31, 2018 | 312.6 | $ 15.6 | 125.7 | 265.9 | (67.3) | (40.9) | 13.6 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 27.3 | | | | | | |
Ending balance (in shares) at Sep. 30, 2019 | | 15,530,725 | | | | | |
Ending balance at Sep. 30, 2019 | $ 333.5 | $ 15.5 | 128.6 | 292.1 | (71) | (45.6) | 13.9 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends per common share (in dollars per share) | $ 0.375 | | | | | | |
Beginning balance (in shares) at Mar. 31, 2019 | | 15,593,275 | | | | | |
Beginning balance at Mar. 31, 2019 | $ 329.3 | $ 15.6 | 127.6 | 275.5 | (68.3) | (34.9) | 13.8 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 5.8 | | | 7.6 | | (2.1) | 0.3 |
Stock-based compensation expense | (0.2) | | (0.2) | | | | |
Stock-based compensation activity (in shares) | | (75,550) | | | | | |
Stock-based compensation activity | 0 | $ (0.1) | 0.1 | | | | |
Dividends | (2) | | | (1.6) | | | (0.4) |
Purchases of treasury stock | (0.9) | | | | (0.9) | | |
Payments of withholding taxes on share awards | (1.8) | | | | (1.8) | | |
Ending balance (in shares) at Jun. 30, 2019 | | 15,517,725 | | | | | |
Ending balance at Jun. 30, 2019 | 330.2 | $ 15.5 | 127.5 | 281.5 | (71) | (37) | 13.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 3.8 | | | 12.2 | | (8.6) | 0.2 |
Stock-based compensation expense | 1.1 | | 1.1 | | | | |
Stock-based compensation activity (in shares) | | 13,000 | | | | | |
Stock-based compensation activity | 0 | | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Ending balance (in shares) at Sep. 30, 2019 | | 15,530,725 | | | | | |
Ending balance at Sep. 30, 2019 | $ 333.5 | $ 15.5 | 128.6 | 292.1 | (71) | (45.6) | 13.9 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends per common share (in dollars per share) | $ 0.125 | | | | | | |
Beginning balance (in shares) at Dec. 31, 2019 | | 15,706,398 | | | | | |
Beginning balance at Dec. 31, 2019 | $ 349.6 | $ 15.7 | 129.8 | 298.2 | (71.1) | (37) | 14 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (14.8) | | | 1.2 | | (16.1) | 0.1 |
Stock-based compensation expense | 1.4 | | 1.4 | | | | |
Stock-based compensation activity (in shares) | | 1,000 | | | | | |
Stock-based compensation activity | 0 | | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Purchases of treasury stock | (2.9) | | | | (2.9) | | |
Payments of withholding taxes on share awards | (0.1) | | | | (0.1) | | |
Ending balance (in shares) at Mar. 31, 2020 | | 15,707,398 | | | | | |
Ending balance at Mar. 31, 2020 | 331.6 | $ 15.7 | 131.2 | 297.8 | (74.1) | (53.1) | 14.1 |
Beginning balance (in shares) at Dec. 31, 2019 | | 15,706,398 | | | | | |
Beginning balance at Dec. 31, 2019 | 349.6 | $ 15.7 | 129.8 | 298.2 | (71.1) | (37) | 14 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (10.4) | | | | | | |
Ending balance (in shares) at Sep. 30, 2020 | | 16,148,791 | | | | | |
Ending balance at Sep. 30, 2020 | $ 334 | $ 16.2 | 133.6 | 286.5 | (79) | (36.9) | 13.6 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends per common share (in dollars per share) | $ 0.125 | | | | | | |
Beginning balance (in shares) at Mar. 31, 2020 | | 15,707,398 | | | | | |
Beginning balance at Mar. 31, 2020 | $ 331.6 | $ 15.7 | 131.2 | 297.8 | (74.1) | (53.1) | 14.1 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | (13.7) | | | (16.6) | | 3.3 | (0.4) |
Stock-based compensation expense | 1.3 | | 1.3 | | | | |
Stock-based compensation activity (in shares) | | 283,993 | | | | | |
Stock-based compensation activity | 0 | $ 0.3 | (0.3) | | | | |
Purchases of treasury stock | (2.4) | | | | (2.4) | | |
Payments of withholding taxes on share awards | (0.6) | | | | (0.6) | | |
Ending balance (in shares) at Jun. 30, 2020 | | 15,991,391 | | | | | |
Ending balance at Jun. 30, 2020 | 316.2 | $ 16 | 132.2 | 281.2 | (77.1) | (49.8) | 13.7 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income (loss) | 18.1 | | | 5.3 | | 12.9 | (0.1) |
Stock-based compensation expense | 1.6 | | 1.6 | | | | |
Stock-based compensation activity (in shares) | | 157,400 | | | | | |
Stock-based compensation activity | 0 | $ 0.2 | (0.2) | | | | |
Purchases of treasury stock | (1.9) | | | | (1.9) | | |
Ending balance (in shares) at Sep. 30, 2020 | | 16,148,791 | | | | | |
Ending balance at Sep. 30, 2020 | $ 334 | $ 16.2 | $ 133.6 | $ 286.5 | $ (79) | $ (36.9) | $ 13.6 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends per common share (in dollars per share) | $ 0 | | | | | | |