Note 15 - Stock-based Compensation	9 Months Ended
Sep. 30, 2025
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	NOTE 15 STOCK-BASED COMPENSATION The Company recognizes stock-based compensation expense for all share-based awards made to employees, including restricted stock awards, restricted common unit awards and employee stock options, based on estimated fair values. During the first quarter of 2025, KPH, a subsidiary of the Company, granted 199,000 restricted Class B common unit awards to an officer of Bud's Plumbing pursuant to an agreement dated March 14, 2025 ("KPH RUA"). The KPH RUA vests based on service and the achievement of criteria based on the IRR of Bud's Plumbing. The KPH RUA has a weighted-average grant date fair value of $0.85 per Class B common unit. The grant-date fair value of the KPH RUA was estimated using the Monte Carlo simulation model, using the following assumptions: expected term of five years, expected volatility of 34% and risk-free interest rate of 4.26%. On March 14, 2025, 83,333 units, representing one half of the service condition for the KPH RUA, became fully vested. The remainder of the service condition vests according to a graded vesting schedule and shall become fully vested subject to the officer's continued employment through the applicable vesting dates. On August 14, 2025, the Company modified the inputs related to the IRR portion of the KPH RUA to be based on the combined internal rate of return of Bud's Plumbing, Advanced Plumbing and Southside Plumbing. The modified portion of the award was probable of vesting both immediately before and after the modification. As a result, the fair value of the award that is subject to the IRR was measured at the modification date and compared to the fair value of the modified portion of the award immediately prior to the modification, with the difference resulting in incremental compensation expense of less than $0.1 million. The incremental fair value was estimated using the Monte Carlo simulation model, using the following assumptions at the modification date and prior to the modification: expected term of 4.6 years, expected volatility of 35% and risk-free interest rate of 4.21%. During the third quarter of 2025, Longhorns LLC, a subsidiary of the Company, granted 199,000 restricted Class B common unit awards to an officer of Roundhouse pursuant to an agreement dated July 1, 2025 ("Roundhouse RUA"). The Roundhouse RUA vests based on service and the achievement of criteria based on the IRR of Roundhouse. The Roundhouse RUA has a weighted-average grant date fair value of $3.01 per Class B common unit. The grant-date fair value of the Roundhouse RUA was estimated using the Monte Carlo simulation model, using the following assumptions: expected term of five years, expected volatility of 43% and risk-free interest rate of 4.22%. On July 1, 2025, 83,333 units, representing one half of the service condition for the Roundhouse RUA, became fully vested. The remainder of the service condition vests according to a graded vesting schedule and shall become fully vested subject to the officer's continued employment through the applicable vesting dates. Total stock-based compensation expense related to all of the Company's restricted stock awards, restricted common unit awards and employee stock options was $0.6 million and $0.9 million for the three months ended September 30, 2025 and September 30, 2024, respectively ($1.4 million and $1.4 million for the nine months ended September 30, 2025 and September 30, 2024, respectively).

Note 15 - Stock-based Compensation

9 Months Ended

Sep. 30, 2025

Share-Based Payment Arrangement [Text Block]

NOTE 15 STOCK-BASED COMPENSATION

The Company recognizes stock-based compensation expense for all share-based awards made to employees, including restricted stock awards, restricted common unit awards and employee stock options, based on estimated fair values.

During the first quarter of 2025, KPH, a subsidiary of the Company, granted 199,000 restricted Class B common unit awards to an officer of Bud's Plumbing pursuant to an agreement dated March 14, 2025 ("KPH RUA"). The KPH RUA vests based on service and the achievement of criteria based on the IRR of Bud's Plumbing. The KPH RUA has a weighted-average grant date fair value of $0.85 per Class B common unit. The grant-date fair value of the KPH RUA was estimated using the Monte Carlo simulation model, using the following assumptions: expected term of five years, expected volatility of 34% and risk-free interest rate of 4.26%. On March 14, 2025, 83,333 units, representing one half of the service condition for the KPH RUA, became fully vested. The remainder of the service condition vests according to a graded vesting schedule and shall become fully vested subject to the officer's continued employment through the applicable vesting dates.

On August 14, 2025, the Company modified the inputs related to the IRR portion of the KPH RUA to be based on the combined internal rate of return of Bud's Plumbing, Advanced Plumbing and Southside Plumbing. The modified portion of the award was probable of vesting both immediately before and after the modification. As a result, the fair value of the award that is subject to the IRR was measured at the modification date and compared to the fair value of the modified portion of the award immediately prior to the modification, with the difference resulting in incremental compensation expense of less than $0.1 million. The incremental fair value was estimated using the Monte Carlo simulation model, using the following assumptions at the modification date and prior to the modification: expected term of 4.6 years, expected volatility of 35% and risk-free interest rate of 4.21%.

During the third quarter of 2025, Longhorns LLC, a subsidiary of the Company, granted 199,000 restricted Class B common unit awards to an officer of Roundhouse pursuant to an agreement dated July 1, 2025 ("Roundhouse RUA"). The Roundhouse RUA vests based on service and the achievement of criteria based on the IRR of Roundhouse. The Roundhouse RUA has a weighted-average grant date fair value of $3.01 per Class B common unit. The grant-date fair value of the Roundhouse RUA was estimated using the Monte Carlo simulation model, using the following assumptions: expected term of five years, expected volatility of 43% and risk-free interest rate of 4.22%. On July 1, 2025, 83,333 units, representing one half of the service condition for the Roundhouse RUA, became fully vested. The remainder of the service condition vests according to a graded vesting schedule and shall become fully vested subject to the officer's continued employment through the applicable vesting dates.

Total stock-based compensation expense related to all of the Company's restricted stock awards, restricted common unit awards and employee stock options was $0.6 million and $0.9 million for the three months ended September 30, 2025 and September 30, 2024, respectively ($1.4 million and $1.4 million for the nine months ended September 30, 2025 and September 30, 2024, respectively).