Stock-Based Compensation (Stock Appreciation Rights) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended							12 Months Ended
	May 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Sep. 30, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2023
Number of Shares
Stock appreciation rights exercised (in shares)									(16,671)	(28,789)
Weighted Average Exercise Price
Options vested, outstanding (in shares)								1,704,714
Options non-vested (in shares)								598,304
Weighted Average Exercise Price Per Share (in dollars per share)								$ 13.01
Weighted-Average Remaining Contractual Life in Years								5 years 1 month 17 days
Number of exercisable options (in shares)								1,704,714
Weighted average exercise price per share (in dollars per share)								$ 14.30
$5.02 - $13.70
Weighted Average Exercise Price
Options vested, outstanding (in shares)								961,955
Options non-vested (in shares)								559,029
Weighted Average Exercise Price Per Share (in dollars per share)								$ 9.42
Weighted-Average Remaining Contractual Life in Years								6 years 2 months 23 days
Number of exercisable options (in shares)								961,955
Weighted average exercise price per share (in dollars per share)								$ 9.85
$16.53 - $22.70
Weighted Average Exercise Price
Options vested, outstanding (in shares)								569,276
Options non-vested (in shares)								39,275
Weighted Average Exercise Price Per Share (in dollars per share)								$ 18.65
Weighted-Average Remaining Contractual Life in Years								3 years 8 months 19 days
Number of exercisable options (in shares)								569,276
Weighted average exercise price per share (in dollars per share)								$ 18.65
$23.25 - $26.92
Weighted Average Exercise Price
Options vested, outstanding (in shares)								173,483
Options non-vested (in shares)								0
Weighted Average Exercise Price Per Share (in dollars per share)								$ 24.69
Weighted-Average Remaining Contractual Life in Years								5 months 15 days
Number of exercisable options (in shares)								173,483
Weighted average exercise price per share (in dollars per share)								$ 24.69
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)								3 years
Expiration period (in years)								10 years
Fair value assumptions
Risk-free interest rate (as a percent)	3.48%	4.20%	3.75%	4.10%	3.56%	1.67%	0.91%
Dividend yield (as a percent)	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
Expected life	6 years	6 years	6 years	6 years	6 years	6 years	6 years
Volatility (as a percent)	63.00%	62.60%	62.40%	61.30%	60.60%	60.30%	61.90%
SAR grant price (usd per share)	$ 9.31	$ 7.45		$ 5.26		$ 12.65	$ 18.58	$ 6.15			$ 5.02
Number of Shares
Outstanding at beginning of period (in shares)								2,091,862
Granted (in shares)								453,021
Forfeited (in shares)								(241,865)
Outstanding at end of period (in shares)			2,091,862					2,303,018	2,091,862
Weighted Average Exercise Price
Outstanding at beginning of period (usd per share)								$ 14.68
Granted (usd per share)								7.65
Forfeited/expired (usd per share)								17.37
Outstanding at end of period			$ 14.68					$ 13.01	$ 14.68
Outstanding - Aggregate Intrinsic Value			$ 0					$ 1,300	$ 0
Total intrinsic value of SARs								0	0	$ 600
Recognized stock-based compensation expense								1,500	$ 1,500	1,800
Unrecognized stock-based compensation expense								$ 2,100
Unrecognized stock-based compensation expense, period of recognition								1 year 10 months 24 days
Unvested activity
Nonvested at the beginning of the period (in shares)								470,471
Granted (in shares)								453,021
Vested (in shares)								(276,566)
Forfeited								(48,622)
Nonvested at the end of the period (in shares)			470,471					598,304	470,471
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)								$ 6.16
Granted (in dollars per share)	$ 5.64	$ 4.56	$ 3.72	$ 3.17	$ 2.97	$ 7.20	$ 10.48	4.68
Vested (in dollars per share)								5.19
Forfeited (in dollars per share)								5.76
Nonvested at the end of the period (in dollars per share)			$ 6.16					5.51	$ 6.16
Stock Appreciation Rights (SARs) | $5.02 - $13.70
Weighted Average Exercise Price
Range of Exercisable Prices, low end of range (in dollars per share)								5.02
Range of Exercisable Prices, high end of range (in dollars per share)								13.70
Stock Appreciation Rights (SARs) | $16.53 - $22.70
Weighted Average Exercise Price
Range of Exercisable Prices, low end of range (in dollars per share)								16.53
Range of Exercisable Prices, high end of range (in dollars per share)								22.70
Stock Appreciation Rights (SARs) | $23.25 - $26.92
Weighted Average Exercise Price
Range of Exercisable Prices, low end of range (in dollars per share)								23.25
Range of Exercisable Prices, high end of range (in dollars per share)								$ 26.92
Performance Shares [Member]
Fair value assumptions
Risk-free interest rate (as a percent)	3.75%	4.67%				1.59%	0.25%
Dividend yield (as a percent)	0.00%	0.00%				0.00%	0.00%
Expected life	2 years 7 months 24 days	2 years 9 months 25 days				2 years 9 months 29 days	2 years 9 months 29 days
Weighted Average Exercise Price
Recognized stock-based compensation expense								$ 5,800	$ 4,200	5,100
Unrecognized stock-based compensation expense								$ 7,200
Unrecognized stock-based compensation expense, period of recognition								1 year 8 months 12 days
Unvested 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								(116,331)
Nonvested at the end of the period (in shares)			661,952					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)			$ 19.94					$ 12.87	$ 19.94
Performance period								3 years
Restricted stock units
Weighted Average Exercise Price
Recognized stock-based compensation expense								$ 4,352	$ 4,335	$ 4,819
Unrecognized stock-based compensation expense								$ 6,200
Unrecognized stock-based compensation expense, period of recognition								2 years
Unvested activity
Nonvested at the beginning of the period (in shares)								671,584
Granted (in shares)								1,006,715
Vested (in shares)								(364,241)
Forfeited								(94,737)
Nonvested at the end of the period (in shares)			671,584					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)			$ 12.51					$ 8.63	$ 12.51
Restricted stock units | Non-employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)								1 year
Restricted stock units | Officers And Key Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)								3 years
2013 Equity and Incentive Compensation Plan | Stock Appreciation Rights (SARs)
Unvested activity
Granted (in shares)	48,427	404,594	10,000	10,000	10,000	312,987	184,641