Stock-Based Compensation	6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	15. Stock-Based Compensation Equity compensation awards may be granted to certain eligible employees or non-employee directors. A detailed description of the awards granted prior to 2024 is included in the Company’s 2023 Annual Report on Form 10-K. The total number of shares of the Company’s common stock available for awards under the Company’s 2013 Omnibus Incentive Plan is 7,477,395 shares. The total number of shares of the Company’s common stock available for issuance as of June 30, 2024 is 2,352,706 shares. Stock-based compensation expense was $1.9 million and $2.3 million for the three months ended June 30, 2024 and 2023, respectively. Stock-based compensation was $5.6 million and $5.4 million for the six months ended June 30, 2024 and 2023, respectively. The Company reports stock-based compensation expense within engineering, selling, and administrative expenses in the Condensed Consolidated Statements of Operations. The Company recognizes stock-based compensation expense over the award’s vesting period, subject to retirement, death or disability provisions of the 2013 Omnibus Incentive Plan. The Company granted 15,919 and 22,951 restricted stock units during the three months ended June 30, 2024 and 2023, respectively. The Company granted 458,938 and 500,283 restricted stock units, inclusive of 78,894 and 77,576 director awards, during the six months ended June 30, 2024 and 2023, respectively. The restricted stock units granted to employees vest in three annual increments over a three-year period beginning on the grant date and director awards vest immediately on the grant date. No performance shares units were issued by the Company to employees during the three months ended June 30, 2024 and 2023, respectively. A total of 365,174 and 316,022 performance shares units were issued by the Company to employees during the six months ended June 30, 2024 and 2023, respectively. Performance share units vest after three years and are earned based on the extent to which performance goals are met over the applicable performance period. The performance goals and the applicable performance period vary for each grant year. The performance goals for the performance share units granted in 2024 are weighted 60% on the 3-year average of the Company’s adjusted return on invested capital ("Adjusted ROIC") percentage from 2024 to 2026 and 40% on cumulative non-new machine sales from January 1, 2024 through December 31, 2026. The Company defines non-new machine sales as parts sales, used crane sales, rental revenue, service revenue and other revenue. The 2024 performance share units include a +/-20% modifier weighted on total shareholder return relative to a defined peer group of companies during the three-year performance period, not to exceed 200% of target shares granted. The performance goals for the performance share units granted in 2023 are weighted 60% on the 3-year average of the Company’s adjusted EBITDA percentage from 2023 to 2025 and 40% on cumulative non-new machine sales from January 1, 2023 through December 31, 2025. The 2023 performance share units include a +/-20% modifier weighted on total shareholder return relative to a defined peer group of companies during the three-year performance period, not to exceed 200% of target shares granted.

Stock-Based Compensation

6 Months Ended

Jun. 30, 2024

Share-Based Payment Arrangement [Abstract]

15. Stock-Based Compensation

Equity compensation awards may be granted to certain eligible employees or non-employee directors. A detailed description of the awards granted prior to 2024 is included in the Company’s 2023 Annual Report on Form 10-K. The total number of shares of the Company’s common stock available for awards under the Company’s 2013 Omnibus Incentive Plan is 7,477,395 shares. The total number of shares of the Company’s common stock available for issuance as of June 30, 2024 is 2,352,706 shares.

Stock-based compensation expense was $1.9 million and $2.3 million for the three months ended June 30, 2024 and 2023, respectively. Stock-based compensation was $5.6 million and $5.4 million for the six months ended June 30, 2024 and 2023, respectively. The Company reports stock-based compensation expense within engineering, selling, and administrative expenses in the Condensed Consolidated Statements of Operations. The Company recognizes stock-based compensation expense over the award’s vesting period, subject to retirement, death or disability provisions of the 2013 Omnibus Incentive Plan.

The Company granted 15,919 and 22,951 restricted stock units during the three months ended June 30, 2024 and 2023, respectively. The Company granted 458,938 and 500,283 restricted stock units, inclusive of 78,894 and 77,576 director awards, during the six months ended June 30, 2024 and 2023, respectively. The restricted stock units granted to employees vest in three annual increments over a three-year period beginning on the grant date and director awards vest immediately on the grant date.

No performance shares units were issued by the Company to employees during the three months ended June 30, 2024 and 2023, respectively. A total of 365,174 and 316,022 performance shares units were issued by the Company to employees during the six months ended June 30, 2024 and 2023, respectively. Performance share units vest after three years and are earned based on the extent to which performance goals are met over the applicable performance period. The performance goals and the applicable performance period vary for each grant year.

The performance goals for the performance share units granted in 2024 are weighted 60% on the 3-year average of the Company’s adjusted return on invested capital ("Adjusted ROIC") percentage from 2024 to 2026 and 40% on cumulative non-new machine sales from January 1, 2024 through December 31, 2026. The Company defines non-new machine sales as parts sales, used crane sales, rental revenue, service revenue and other revenue. The 2024 performance share units include a +/-20% modifier weighted on total shareholder return relative to a defined peer group of companies during the three-year performance period, not to exceed 200% of target shares granted.

The performance goals for the performance share units granted in 2023 are weighted 60% on the 3-year average of the Company’s adjusted EBITDA percentage from 2023 to 2025 and 40% on cumulative non-new machine sales from January 1, 2023 through December 31, 2025. The 2023 performance share units include a +/-20% modifier weighted on total shareholder return relative to a defined peer group of companies during the three-year performance period, not to exceed 200% of target shares granted.