Stock-Based Compensation (Restricted Stock) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				12 Months Ended
	May 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					1,006,715
Granted (in dollars per share)					$ 7.25
Recognized stock-based compensation expense					$ 4,352	$ 4,335	$ 4,819
Restricted stock unit activity
Nonvested at the beginning of the period (in shares)					671,584
Granted (in shares)					1,006,715
Vested (in shares)					(364,241)
Forfeited (in shares)					(94,737)
Nonvested at the end of the period (in shares)					1,219,321	671,584
Weighted Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)					$ 12.51
Granted (in dollars per share)					7.25
Vested (in dollars per share)					11.34
Forfeited (in dollars per share)					10.87
Nonvested at the end of the period (in dollars per share)					$ 8.63	$ 12.51
Additional disclosures
Unrecognized stock-based compensation expense					$ 6,200
Unrecognized stock-based compensation expense, period of recognition					2 years
Fair value of RSU, vested in period					$ 4,100	$ 5,100	4,100
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	29,337	758,965	500,624	316,959	788,302
Granted (in dollars per share)	$ 15.24	$ 10.91	$ 16.54	$ 25.38	$ 11.07
Recognized stock-based compensation expense					$ 5,800	$ 4,200	$ 5,100
Restricted stock unit activity
Nonvested at the beginning of the period (in shares)					661,952
Granted (in shares)	29,337	758,965	500,624	316,959	788,302
Vested (in shares)					(225,667)
Forfeited (in shares)					(116,331)
Nonvested at the end of the period (in shares)					1,108,256	661,952
Weighted Average Grant-Date Fair Value
Nonvested at the beginning of the period (in dollars per share)					$ 19.94
Granted (in dollars per share)	$ 15.24	$ 10.91	$ 16.54	$ 25.38	11.07
Vested (in dollars per share)					25.38
Forfeited (in dollars per share)					16.63
Nonvested at the end of the period (in dollars per share)					$ 12.87	$ 19.94
Additional disclosures
Unrecognized stock-based compensation expense					$ 7,200
Unrecognized stock-based compensation expense, period of recognition					1 year 8 months 12 days
2013 Equity and Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance					12,100,000
Number of shares available for grant					3,100,000
2013 Equity and Incentive Compensation Plan | Equity Awards, Other Than Options And Stock Appreciation Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance					8,100,000
Number of shares available for grant					1,900,000
1995 Non-Employee Directors' Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized for issuance					800,000
Number of shares available for grant					181,000
1995 Non-Employee Directors' Stock Plan | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					80,705	63,696	23,224	34,986
Granted (in dollars per share)					$ 9.03	$ 7.85	$ 21.53	$ 10.29
Restricted stock unit activity
Granted (in shares)					80,705	63,696	23,224	34,986
Weighted Average Grant-Date Fair Value
Granted (in dollars per share)					$ 9.03	$ 7.85	$ 21.53	$ 10.29
1995 Non-Employee Directors' Stock Plan | Restricted stock units | 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					$ 0	$ 0	$ 120
1995 Non-Employee Directors' Stock Plan | Restricted stock units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					0	167	333
1995 Non-Employee Directors' Stock Plan | Restricted stock units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					167	333	0
1995 Non-Employee Directors' Stock Plan | Restricted stock units | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					$ 516	$ 0	$ 0
1995 Executive Incentive Compensation Plan | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					926,010	450,915	343,125	522,087	270,864	242,791
Granted (in dollars per share)					$ 7.09	$ 12.36	$ 18.62	$ 8.22	$ 22.25	$ 19.93
Restricted stock unit activity
Granted (in shares)					926,010	450,915	343,125	522,087	270,864	242,791
Weighted Average Grant-Date Fair Value
Granted (in dollars per share)					$ 7.09	$ 12.36	$ 18.62	$ 8.22	$ 22.25	$ 19.93
1995 Executive Incentive Compensation Plan | Restricted stock units | 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					$ 0	$ 0	$ 142
1995 Executive Incentive Compensation Plan | Restricted stock units | 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					0	314	1,239
1995 Executive Incentive Compensation Plan | Restricted stock units | 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					91	741	1,093
1995 Executive Incentive Compensation Plan | Restricted stock units | 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					910	1,294	1,892
1995 Executive Incentive Compensation Plan | Restricted stock units | 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					1,040	1,486	0
1995 Executive Incentive Compensation Plan | Restricted stock units | 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognized stock-based compensation expense					$ 1,628	$ 0	$ 0