Common Stock and Stock-Based Awards - Dividends and Share Repurchase Authorization (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jan. 12, 2024	Dec. 13, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 19, 2020	Oct. 26, 2018	Mar. 06, 2018	Dec. 07, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends paid			$ 23,455	$ 23,156	$ 23,260
Quarterly cash dividend declared		$ 0.165
Dividends payable, date of record		Dec. 29, 2023
Repurchase of common shares remaining authorized amount			$ 154,600
Repurchase of common Shares			0	400,000	1,400,000
Repurchase of common shares, value				$ 9,400	$ 40,200
Repurchase of common shares, average cost per share				$ 24.96	$ 29.11
Quarterly Dividend Rate Q1 2018 Through January 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Quarterly cash dividend declared			$ 0.15
Quarterly Dividend Rate February 2020 Through April 2020 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Quarterly cash dividend declared			0.16
Quarterly Dividend Rate Since May 2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Quarterly cash dividend declared			$ 0.165
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends paid	$ 5,900
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchase of common shares program authorized amount						$ 150,000	$ 100,000	$ 250,000	$ 100,000