Stock-Based Compensation - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023		Dec. 31, 2022	Dec. 31, 2021
Stock-Based Compensation
Share-based compensation, remaining shares available for issuance (in shares)	3,271,119
Engineering Selling and Administrative Expenses
Stock-Based Compensation
Stock-based compensation expense (in dollars)	$ 11.5		$ 8.5	$ 7.1
Restricted Stock | Director
Stock-Based Compensation
Number of shares of other than options granted during the period (in shares)	77,576		56,640	59,280
Employee Stock Option
Stock-Based Compensation
Stock-based compensation expense (in dollars)	$ 0.0		$ 0.1	$ 0.6
Number of share options granted during the period (in shares)	0
Employee Stock Option | Employees
Stock-Based Compensation
Vesting period (in years)	3 years
Expiration period (in years)	10 years
Number of share options granted during the period (in shares)	0		0	0
Restricted Stock Units
Stock-Based Compensation
Stock-based compensation expense (in dollars)	$ 6.3		$ 5.2	$ 4.7
Unrecognized compensation expense before income tax (in dollars)	$ 6.2
Recognition period for unrecognized compensation expense (in years)	1 year 9 months 18 days
Number of shares of other than options granted during the period (in shares)	520,132		413,543	417,535
Restricted Stock Units | Employees
Stock-Based Compensation
Vesting period (in years)	3 years
Anniversary period from grant date, for grants made prior to 2019 (in years)				3 years
Performance Shares
Stock-Based Compensation
Stock-based compensation expense (in dollars)	$ 5.2		$ 3.2	$ 1.9
Unrecognized compensation expense before income tax (in dollars)	$ 5.5
Recognition period for unrecognized compensation expense (in years)	1 year 8 months 12 days
Performance period (in years)	3 years
Period of U.S. Treasury rates as a basis for assumed risk-free rates (in years)	3 years
Number of shares of other than options granted during the period (in shares)	316,022	[1]	122,280	159,247
2013 Omnibus Plan
Stock-Based Compensation
Share-based compensation, shares authorized (in shares)	7,477,395
Performance Shares 2023 | Performance Shares
Stock-Based Compensation
Performance period (in years)	3 years
Percentage of shares paid based on total shareholder return relative to peer group (as a percent)	60.00%
Percentage of shares paid based on adjusted EBITDA (as a percent)	40.00%
Increase decrease in percentage of shares paid based on total shareholder return relative to defined peer group	20.00%
Percentage of shares of other than options granted during the period	200.00%
Performance Shares 2022 | Performance Shares
Stock-Based Compensation
Performance period (in years)			3 years
Percentage of shares paid based on total shareholder return relative to peer group (as a percent)			60.00%
Percentage of shares paid based on adjusted EBITDA (as a percent)			40.00%
Increase decrease in percentage of shares paid based on total shareholder return relative to defined peer group			20.00%
Percentage of shares of other than options granted during the period			200.00%
Performance Shares 2021 | Performance Shares
Stock-Based Compensation
Performance period (in years)				3 years
Percentage of shares paid based on total shareholder return relative to peer group (as a percent)				60.00%
Percentage of shares paid based on adjusted EBITDA (as a percent)				40.00%
Increase decrease in percentage of shares paid based on total shareholder return relative to defined peer group				20.00%
Percentage of shares of other than options granted during the period				200.00%

[1] Performance shares granted assuming achievement of performance goals at target.