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 Interest |
Beginning balance (in shares) at Dec. 31, 2017 | | 15,153,009 | | | | | |
Beginning balance at Dec. 31, 2017 | $ 288 | $ 15.2 | $ 117.8 | $ 216.1 | $ (55.2) | $ (17.9) | $ 12 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income | 15.7 | | | 9.8 | | 5.5 | 0.4 |
Stock-based compensation expense | 2.2 | | 2.2 | | | | |
Stock-based compensation activity (shares) | | 12,000 | | | | | |
Stock-based compensation activity | 0 | | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Purchases of treasury stock (27,069, 26,917, and 123,504 shares, respectively) | (1.1) | | | | (1.1) | | |
Payments of withholding taxes on share awards | (1) | | | | (1) | | |
Ending balance (in shares) at Mar. 31, 2018 | | 15,165,009 | | | | | |
Ending balance at Mar. 31, 2018 | 304.8 | $ 15.2 | 120 | 226.9 | (57.3) | (12.4) | 12.4 |
Beginning balance (in shares) at Dec. 31, 2017 | | 15,153,009 | | | | | |
Beginning balance at Dec. 31, 2017 | 288 | $ 15.2 | 117.8 | 216.1 | (55.2) | (17.9) | 12 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income | 32.5 | | | | | | |
Ending balance (in shares) at Sep. 30, 2018 | | 15,557,109 | | | | | |
Ending balance at Sep. 30, 2018 | $ 315.6 | $ 15.6 | 123.9 | 252.7 | (64.4) | (25.3) | 13.1 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends per common share (in dollars per share) | $ 0.375 | | | | | | |
Beginning balance (in shares) at Mar. 31, 2018 | | 15,165,009 | | | | | |
Beginning balance at Mar. 31, 2018 | $ 304.8 | $ 15.2 | 120 | 226.9 | (57.3) | (12.4) | 12.4 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income | 4.7 | | | 14.8 | | (10.3) | 0.2 |
Stock-based compensation expense | 2.4 | | 2.4 | | | | |
Stock-based compensation activity (shares) | | 386,450 | | | | | |
Stock-based compensation activity | 0 | $ 0.4 | (0.4) | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Payments of withholding taxes on share awards | (2) | | | | (2) | | |
Ending balance (in shares) at Jun. 30, 2018 | | 15,551,459 | | | | | |
Ending balance at Jun. 30, 2018 | 308.3 | $ 15.6 | 122 | 240.1 | (59.3) | (22.7) | 12.6 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Other comprehensive income | 12.1 | | | 14.2 | | (2.6) | 0.5 |
Stock-based compensation expense | 1.9 | | 1.9 | | | | |
Stock-based compensation activity (shares) | | 5,650 | | | | | |
Stock-based compensation activity | 0 | | | | | | |
Dividends | (1.6) | | | (1.6) | | | |
Purchases of treasury stock (27,069, 26,917, and 123,504 shares, respectively) | (5) | | | | (5) | | |
Payments of withholding taxes on share awards | (0.1) | | | | (0.1) | | |
Ending balance (in shares) at Sep. 30, 2018 | | 15,557,109 | | | | | |
Ending balance at Sep. 30, 2018 | $ 315.6 | $ 15.6 | 123.9 | 252.7 | (64.4) | (25.3) | 13.1 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | |
Dividends per common share (in dollars per share) | $ 0.125 | | | | | | |
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 | 17.7 | | | 11.2 | | 6 | 0.5 |
Stock-based compensation expense | 1.9 | | 1.9 | | | | |
Stock-based compensation activity (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 | 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 | 5.8 | | | 7.6 | | (2.1) | 0.3 |
Stock-based compensation expense | (0.2) | | (0.2) | | | | |
Dividends | (2) | | | (1.6) | | | (0.4) |
Stock-based compensation activity, forfeited (shares) | | (75,550) | | | | | |
Stock-based compensation activity, forfeited | 0 | $ (0.1) | 0.1 | | | | |
Purchases of treasury stock (27,069, 26,917, and 123,504 shares, respectively) | (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 | 3.8 | | | 12.2 | | (8.6) | 0.2 |
Stock-based compensation expense | 1.1 | | 1.1 | | | | |
Stock-based compensation activity (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 | | | | | | |