CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Noncontrolling Interest
Minimum pension liability tax (expense)/benefit					$ 1,458
Dividends per common share (in dollars per share)				$ 0.70
Balance at Dec. 31, 2020		$ 4,622	$ 283,420	$ 764,562	(204,771)	$ 2,116
Balance (in shares) at Dec. 31, 2020		46,222,000
Increase (Decrease) in Stockholders' Equity
Net Income				153,860		899
Currency translation adjustment					(27,400)	(144)
Minimum pension liability adjustment, net of tax (expense)/benefit of ($1,458), $1,112, and $589, for 2021, 2020, and 2019, respectively					(3,590)
Dividends on common stock ($0.7000, $0.6200, and $0.5800 per share for the years of 2021, 2020, and 2019, respectively)				(32,688)
Dividend to noncontrolling interest						710
Common stock issued		$ 44	15,480
Stock Issued During Period, Shares, New Issues		440,000
Share based compensation		$ 14	11,717
Share-based compensation (in shares)		140,000
Common stock repurchased	$ (15,300)	$ (32)		(25,917)
Common stock repurchased (in shares)	(192,509)	(319,000)
Balance (in shares) at Dec. 31, 2021		46,483,000
Balance at Dec. 31, 2021		$ 4,648	310,617	$ 859,817	(228,581)	2,161
Temporary equity, beginning balance at Dec. 31, 2020	$ (245)
Increase (Decrease) in Redeemable Noncontrolling Interest
Net income	216
Currency translation adjustment	10
Temporary equity, ending balance at Dec. 31, 2021	(19)
Minimum pension liability tax (expense)/benefit					3,647
Dividends per common share (in dollars per share)				$ 0.78
Increase (Decrease) in Stockholders' Equity
Net Income				$ 187,332		857
Currency translation adjustment					(11,708)	(118)
Minimum pension liability adjustment, net of tax (expense)/benefit of ($1,458), $1,112, and $589, for 2021, 2020, and 2019, respectively					(8,841)
Dividends on common stock ($0.7000, $0.6200, and $0.5800 per share for the years of 2021, 2020, and 2019, respectively)				(36,367)
Dividend to noncontrolling interest						624
Common stock issued		$ 9	3,850
Stock Issued During Period, Shares, New Issues		90,000
Share based compensation		$ 14	10,959
Share-based compensation (in shares)		136,000
Common stock repurchased	$ (36,300)	$ (52)		(41,521)
Common stock repurchased (in shares)	(453,207)	(516,000)
Balance (in shares) at Dec. 31, 2022	46,193,000	46,193,000
Balance at Dec. 31, 2022	$ 1,070,134	$ 4,619	325,426	$ 969,261	(231,448)	2,276
Increase (Decrease) in Redeemable Noncontrolling Interest
Net income	622
Currency translation adjustment	17
Temporary equity, ending balance at Dec. 31, 2022	620
Minimum pension liability tax (expense)/benefit					643
Dividends per common share (in dollars per share)				$ 0.90
Increase (Decrease) in Stockholders' Equity
Net Income				$ 193,272		935
Currency translation adjustment					11,992	36
Minimum pension liability adjustment, net of tax (expense)/benefit of ($1,458), $1,112, and $589, for 2021, 2020, and 2019, respectively					1,658
Dividends on common stock ($0.7000, $0.6200, and $0.5800 per share for the years of 2021, 2020, and 2019, respectively)				(41,723)
Dividend to noncontrolling interest						821
Common stock issued		$ 22	9,171
Stock Issued During Period, Shares, New Issues		216,000
Share based compensation		$ 13	10,120
Share-based compensation (in shares)		131,000
Common stock repurchased	$ (32,500)	$ (47)		(42,298)
Common stock repurchased (in shares)	(371,452)	(473,000)
Balance (in shares) at Dec. 31, 2023	46,067,000	46,067,000
Balance at Dec. 31, 2023	$ 1,209,148	$ 4,607	$ 344,717	$ 1,078,512	$ (221,114)	$ 2,426
Increase (Decrease) in Redeemable Noncontrolling Interest
Net income	527
Currency translation adjustment	(2)
Temporary equity, ending balance at Dec. 31, 2023	$ 1,145