XML 114 R2.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Pay vs Performance Disclosure | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Pay vs Performance Disclosure |  |  |  |  |
Pay vs Performance Disclosure, Table | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Return on Capital |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Value of Initial Fixed $100 | ​ | ​ | ​ | Employed (Adjusted |
​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | Average | ​ | Investment Based On: | ​ | ​ | ​ | ROCE) |
​ | ​ | Summary | ​ | ​ | ​ | Summary | ​ | Compensation | ​ | ​ | ​ | Peer Group | ​ | ​ | ​ | ​ | ​ | ​ |
​ | ​ | Compensation | ​ | Compensation | ​ | Compensation | ​ | Actually Paid | ​ | Total |  | Total | ​ | ​ | ​ | ​ | ​ | ​ |
​ | ​ | Table Total | ​ | Actually Paid | ​ | Table Total for | ​ | to Non-PEO | ​ | Shareholder | ​ | Shareholder | ​ | Net Income | ​ | ​ | ​ | Average |
​ | ​ | for PEO | ​ | to PEO(1) | ​ | Non-PEO NEOs | ​ | NEOs(1) | ​ | Return(2) | ​ | Return(3) | ​ | (millions)(4) | ​ | 1 Year(5) | ​ | 3 Year(5) |
Year (a) | ​ | (b) | ​ | (c) |  | (d) |  | (e) | ​ | (f) | ​ | (g) | ​ | (h) | ​ | (i) | ​ | (j) | ​
2024 |  | 4,495,698 |  | 3,710,611 |  | 1,232,110 |  | 944,432 |  | 348.68 |  | 226.81 |  | 173.96 |  | 12.4 | % | 23.5 | %
2023 |  | 6,315,108 |  | 10,548,681 |  | 1,737,578 |  | 2,508,269 |  | 447.38 |  | 234.79 |  | 195.43 |  | 20.1 | % | 28.6 | %
2022 |  | 6,430,893 |  | 384,908 |  | 2,097,211 |  | 342,776 |  | 259.47 |  | 172.36 |  | 298.21 |  | 39.9 | % | 26.7 | %
2021 |  | 6,006,289 |  | 16,582,019 |  | 2,131,000 |  | 5,779,949 |  | 441.63 |  | 209.49 |  | 213.52 |  | 34.8 | % | 19.4 | %
2020 |  | 4,174,608 |  | 6,594,027 |  | 1,648,558 |  | 2,599,276 |  | 156.55 |  | 133.23 |  | 71.10 |  | 15.4 | % | 11.7 | %
(1) | Reflects the CAP for the PEO and the average CAP for the Non-PEO NEOs for the covered years, as computed in accordance with Item 402(v) of Regulation S-K. The following adjustments were made to the Summary Compensation Table total compensation to determine the CAP:
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ |  | Reported Change in the |  | ​ |  | ​
​ | ​ | Reported Summary | ​ | Reported Value of | ​ | Equity Award | ​ | Actuarial Present Value of | ​ | Pension Benefit | ​ | ​
​ | ​ | Compensation Table Total(i) | ​ | Equity Awards(ii) | ​ | Adjustments(iii) | ​ | Pension Benefits(iv) | ​ | Adjustments(v) | ​ | Compensation Actually Paid
Year | ​ | A | ​ | B | ​ | C | ​ | D | ​ | E | ​ | A-B+C-D+E
Company’s PEO |  |  |  |  |  |  |  |  |  |  |  |
2024 |  | 4,495,698 |  | 989,748 |  | 214,693 |  | 10,032 |  | — |  | 3,710,611
Average of Non-PEO NEOs |  | ​ |  |  |  |  |  |  |  |  |  |
2024 |  | 1,232,110 |  | 224,285 |  | (63,393) |  | — |  | — |  | 944,432
| (i) | Reflects the amounts (or the average amounts for the Non-PEO NEOs) reported in the “Total” column of the Summary Compensation Table for the covered year.
| (ii) | Reflects the grant date fair value of equity awards granted to the PEO (or the average amounts with regard to the Non-PEO NEOs) as reported in the “Stock Awards” column in the Summary Compensation Table for the covered year.
| (iii) | The equity award adjustments for the covered year include the addition (or subtraction, as applicable) as set forth in the table below. The fair values of equity awards were calculated using closing stock price as of the applicable valuation dates and are not adjusted for present value of dividends (which are not payable with respect to RSUs granted to Named Executive Officers).
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Year over Year Change in Fair |  | ​ |  | ​ |  | ​
​ | ​ | Year End Fair Value of | ​ | Value of Outstanding and | ​ | Year over Year Change in Fair Value of | ​ | Fair value of | ​ | ​
​ | ​ | Equity Awards Granted | ​ | Unvested | ​ | Equity Awards Granted in Prior Years | ​ | forfeited awards at | ​ | Total Equity Award
Year | ​ | During the Fiscal Year | ​ | Equity Awards | ​ | that Vested in the Year | ​ | end of prior year | ​ | Adjustments
Company’s PEO | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 797,886 |  | (395,310) |  | (187,883) |  | — |  | 214,693
Average of Non-PEO NEOs | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 137,647 |  | (65,000) |  | (39,842) |  | 96,198 |  | (63,393)
​
| (iv) | Reflects the amounts reported in the “Change in Pension Value and Nonqualified Deferred Compensation Earnings” column of the Summary Compensation Table for the covered years.
| (v) | These amounts reflect the actuarially determined service cost for services rendered during the applicable year. The Company’s legacy non-contractual defined benefit pension plan was terminated effective December 31, 2017, and fully liquidated as of December 31, 2019. Therefore, no services costs were incurred in any of the covered years.
(2) | Total Shareholder Return (TSR) is calculated assuming $100 was invested on December 31, 2019, with reinvestment of dividends. All calculations have been prepared by Zacks Investment Research, Inc.
(3) | The 2024 peer group includes the following companies: Covenant Logistics Group, Inc., Forward Air Corporation, Hub Group, Inc., J.B. Hunt Transport Services, Inc., Knight-Swift Transportation Holdings, Inc., Landstar System, Inc., Old Dominion Freight Line, Inc., RXO, Inc., Saia, Inc., Schneider National, Inc., TFI International Inc., Werner Enterprises, Inc., and XPO, Inc. Our 2024 peer group is identical to our 2023 peer group, except that RXO, Inc. and XPO, Inc. were not included in the 2023 peer group. The following table sets forth the TSR for the 2023 peer group for each of the five years reported:
​
​ | ​ | ​
Year |  | 2023 Peer Group Total Shareholder Return
2024 |  | 216.56
2023 |  | 235.83
2022 |  | 180.19
2021 | ​ | 216.63
2020 |  | 130.88
​
(4) | Net income as reported in the Company’s audited financial statements for each covered year, which includes, for the applicable years, income from discontinued operations.
(5) | Reflects the one-year and three-year average Adjusted ROCE of the Company as approved by the Compensation Committee for purposes of the Company’s annual cash incentive compensation plan and long-term cash incentive compensation plan for each covered year. The Company has determined that one-year Adjusted ROCE as used in its annual cash incentive compensation plan is the financial performance measure that, in the Company’s assessment, represents the most important performance measure (that is not otherwise required to be disclosed in the table) used by the Company to link CAP to the Named Executive Officers, for the most recently completed fiscal year, to Company performance. Because the Company uses three-year average Adjusted ROCE in its long-term cash incentive program as discussed in greater detail in “Compensation Discussion & Analysis — Components of Compensation — Long-Term Incentive Compensation,” the Company is providing, on a supplemental basis, its three-year average Adjusted ROCE for each covered year. For more information, see the section below titled “Financial Performance Measures.”
Company Selected Measure Name | Adjusted ROCE |  |  |  |
Named Executive Officers, Footnote | Ms. McReynolds served as Principal Executive Officer (“PEO”) in each year. The names of the non-PEO Named Executive Officers (the “Non-PEO NEOs”) included for purposes of calculating the average amounts in each covered year are as follows: (i) for 2024, Seth K. Runser, J. Matthew Beasley, Dennis L Anderson II and Michael E. Newcity; (ii) for 2023, J. Matthew Beasley, Seth K. Runser, Dennis L. Anderson II, Michael E. Newcity and David R. Cobb; (iii) for 2022, David R. Cobb, Michael E. Newcity, Seth K. Runser, Daniel E. Loe and Dennis L. Anderson II; (iv) for 2021, David R. Cobb, Michael E. Newcity, James A. Ingram and Dennis L. Anderson II; and (v) for 2020, Timothy D. Thorne, David R. Cobb, Michael E. Newcity and James A. Ingram. |  |  |  |
Peer Group Issuers, Footnote |
(3) | The 2024 peer group includes the following companies: Covenant Logistics Group, Inc., Forward Air Corporation, Hub Group, Inc., J.B. Hunt Transport Services, Inc., Knight-Swift Transportation Holdings, Inc., Landstar System, Inc., Old Dominion Freight Line, Inc., RXO, Inc., Saia, Inc., Schneider National, Inc., TFI International Inc., Werner Enterprises, Inc., and XPO, Inc. Our 2024 peer group is identical to our 2023 peer group, except that RXO, Inc. and XPO, Inc. were not included in the 2023 peer group. The following table sets forth the TSR for the 2023 peer group for each of the five years reported:
​
​ | ​ | ​
Year |  | 2023 Peer Group Total Shareholder Return
2024 |  | 216.56
2023 |  | 235.83
2022 |  | 180.19
2021 | ​ | 216.63
2020 |  | 130.88
Changed Peer Group, Footnote | Our 2024 peer group is identical to our 2023 peer group, except that RXO, Inc. and XPO, Inc. were not included in the 2023 peer group. |  |  |  |
PEO Total Compensation Amount | $ 4,495,698 | $ 6,315,108 | $ 6,430,893 | $ 6,006,289 | $ 4,174,608
PEO Actually Paid Compensation Amount | $ 3,710,611 | 10,548,681 | 384,908 | 16,582,019 | 6,594,027
Adjustment To PEO Compensation, Footnote | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ |  | Reported Change in the |  | ​ |  | ​
​ | ​ | Reported Summary | ​ | Reported Value of | ​ | Equity Award | ​ | Actuarial Present Value of | ​ | Pension Benefit | ​ | ​
​ | ​ | Compensation Table Total(i) | ​ | Equity Awards(ii) | ​ | Adjustments(iii) | ​ | Pension Benefits(iv) | ​ | Adjustments(v) | ​ | Compensation Actually Paid
Year | ​ | A | ​ | B | ​ | C | ​ | D | ​ | E | ​ | A-B+C-D+E
Company’s PEO |  |  |  |  |  |  |  |  |  |  |  |
2024 |  | 4,495,698 |  | 989,748 |  | 214,693 |  | 10,032 |  | — |  | 3,710,611
Average of Non-PEO NEOs |  | ​ |  |  |  |  |  |  |  |  |  |
2024 |  | 1,232,110 |  | 224,285 |  | (63,393) |  | — |  | — |  | 944,432
| (i) | Reflects the amounts (or the average amounts for the Non-PEO NEOs) reported in the “Total” column of the Summary Compensation Table for the covered year.
| (ii) | Reflects the grant date fair value of equity awards granted to the PEO (or the average amounts with regard to the Non-PEO NEOs) as reported in the “Stock Awards” column in the Summary Compensation Table for the covered year.
| (iii) | The equity award adjustments for the covered year include the addition (or subtraction, as applicable) as set forth in the table below. The fair values of equity awards were calculated using closing stock price as of the applicable valuation dates and are not adjusted for present value of dividends (which are not payable with respect to RSUs granted to Named Executive Officers).
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Year over Year Change in Fair |  | ​ |  | ​ |  | ​
​ | ​ | Year End Fair Value of | ​ | Value of Outstanding and | ​ | Year over Year Change in Fair Value of | ​ | Fair value of | ​ | ​
​ | ​ | Equity Awards Granted | ​ | Unvested | ​ | Equity Awards Granted in Prior Years | ​ | forfeited awards at | ​ | Total Equity Award
Year | ​ | During the Fiscal Year | ​ | Equity Awards | ​ | that Vested in the Year | ​ | end of prior year | ​ | Adjustments
Company’s PEO | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 797,886 |  | (395,310) |  | (187,883) |  | — |  | 214,693
Average of Non-PEO NEOs | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 137,647 |  | (65,000) |  | (39,842) |  | 96,198 |  | (63,393)
​
| (iv) | Reflects the amounts reported in the “Change in Pension Value and Nonqualified Deferred Compensation Earnings” column of the Summary Compensation Table for the covered years.
| (v) | These amounts reflect the actuarially determined service cost for services rendered during the applicable year. The Company’s legacy non-contractual defined benefit pension plan was terminated effective December 31, 2017, and fully liquidated as of December 31, 2019. Therefore, no services costs were incurred in any of the covered years.
Non-PEO NEO Average Total Compensation Amount | $ 1,232,110 | 1,737,578 | 2,097,211 | 2,131,000 | 1,648,558
Non-PEO NEO Average Compensation Actually Paid Amount | $ 944,432 | 2,508,269 | 342,776 | 5,779,949 | 2,599,276
Adjustment to Non-PEO NEO Compensation Footnote | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ |  | Reported Change in the |  | ​ |  | ​
​ | ​ | Reported Summary | ​ | Reported Value of | ​ | Equity Award | ​ | Actuarial Present Value of | ​ | Pension Benefit | ​ | ​
​ | ​ | Compensation Table Total(i) | ​ | Equity Awards(ii) | ​ | Adjustments(iii) | ​ | Pension Benefits(iv) | ​ | Adjustments(v) | ​ | Compensation Actually Paid
Year | ​ | A | ​ | B | ​ | C | ​ | D | ​ | E | ​ | A-B+C-D+E
Company’s PEO |  |  |  |  |  |  |  |  |  |  |  |
2024 |  | 4,495,698 |  | 989,748 |  | 214,693 |  | 10,032 |  | — |  | 3,710,611
Average of Non-PEO NEOs |  | ​ |  |  |  |  |  |  |  |  |  |
2024 |  | 1,232,110 |  | 224,285 |  | (63,393) |  | — |  | — |  | 944,432
| (i) | Reflects the amounts (or the average amounts for the Non-PEO NEOs) reported in the “Total” column of the Summary Compensation Table for the covered year.
| (ii) | Reflects the grant date fair value of equity awards granted to the PEO (or the average amounts with regard to the Non-PEO NEOs) as reported in the “Stock Awards” column in the Summary Compensation Table for the covered year.
| (iii) | The equity award adjustments for the covered year include the addition (or subtraction, as applicable) as set forth in the table below. The fair values of equity awards were calculated using closing stock price as of the applicable valuation dates and are not adjusted for present value of dividends (which are not payable with respect to RSUs granted to Named Executive Officers).
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Year over Year Change in Fair |  | ​ |  | ​ |  | ​
​ | ​ | Year End Fair Value of | ​ | Value of Outstanding and | ​ | Year over Year Change in Fair Value of | ​ | Fair value of | ​ | ​
​ | ​ | Equity Awards Granted | ​ | Unvested | ​ | Equity Awards Granted in Prior Years | ​ | forfeited awards at | ​ | Total Equity Award
Year | ​ | During the Fiscal Year | ​ | Equity Awards | ​ | that Vested in the Year | ​ | end of prior year | ​ | Adjustments
Company’s PEO | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 797,886 |  | (395,310) |  | (187,883) |  | — |  | 214,693
Average of Non-PEO NEOs | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 137,647 |  | (65,000) |  | (39,842) |  | 96,198 |  | (63,393)
​
| (iv) | Reflects the amounts reported in the “Change in Pension Value and Nonqualified Deferred Compensation Earnings” column of the Summary Compensation Table for the covered years.
| (v) | These amounts reflect the actuarially determined service cost for services rendered during the applicable year. The Company’s legacy non-contractual defined benefit pension plan was terminated effective December 31, 2017, and fully liquidated as of December 31, 2019. Therefore, no services costs were incurred in any of the covered years.
Compensation Actually Paid vs. Total Shareholder Return | CAP vs. Company TSR and Peer Group TSR The following graph compares the CAP to Ms. McReynolds and the average amount of CAP to the Non-PEO NEOs with the Company’s cumulative TSR and the peer group TSR over the five years presented. TSR is calculated assuming $100 was invested on December 31, 2019, with reinvestment of dividends. The Company’s cumulative TSR over the five-year period was $348.68, while the cumulative TSR of the peer group was $226.81 over the same period. CAP VS. COMPANY TSR AND PEER GROUP TSR ​ ​ ​ |  |  |  |
Compensation Actually Paid vs. Net Income | CAP vs. Net Income The following graph compares the CAP to Ms. McReynolds and the average amount of CAP to the Non-PEO NEOs with our net income over the five years presented. While we do not use net income as a compensation performance metric in our executive compensation program, the measure of net income may correlate to Adjusted Operating Income, which we use in our AIP. Because a significant portion of CAP is comprised of equity awards, which have multi-year vesting periods, CAP is more heavily impacted by fluctuations in stock price year-over-year, as compared to net income. CAP VS. NET INCOME ​ ​ ​ |  |  |  |
Compensation Actually Paid vs. Company Selected Measure | CAP vs. Annual and Three-Year Average Adjusted ROCE The following graph compares the CAP to Ms. McReynolds and the average amount of CAP to the Non-PEO NEOs with (i) our one-year Adjusted ROCE, calculated in accordance with our AIP, and (ii) on a supplemental basis, the average three-year Adjusted ROCE, calculated in accordance with our C-LTIP program, each over the five years presented. While the Company uses several financial performance measures to evaluate performance for purposes of its executive compensation program, the Company has determined that one-year Adjusted ROCE as used in the AIP is the financial performance measure that, in the Company’s assessment, represents the most important performance measure (that is not otherwise required to be disclosed in the table) used by the Company to link CAP to the Named Executive Officers, for the most recently completed fiscal year, to Company performance. CAP VS. ANNUAL AND THREE-YEAR AVERAGE ADJUSTED ROCE ​ ​ |  |  |  |
Total Shareholder Return Vs Peer Group | CAP vs. Company TSR and Peer Group TSR The following graph compares the CAP to Ms. McReynolds and the average amount of CAP to the Non-PEO NEOs with the Company’s cumulative TSR and the peer group TSR over the five years presented. TSR is calculated assuming $100 was invested on December 31, 2019, with reinvestment of dividends. The Company’s cumulative TSR over the five-year period was $348.68, while the cumulative TSR of the peer group was $226.81 over the same period. CAP VS. COMPANY TSR AND PEER GROUP TSR ​ ​ ​ |  |  |  |
Tabular List, Table | As described in greater detail in “Executive Compensation — Compensation Discussion & Analysis,” the Company’s executive compensation program reflects a variable pay-for-performance philosophy. The financial performance measures set forth in the table below (in unranked order), in the Company’s assessment, represent the most important financial performance measures used by the Company to link CAP to the Company’s named executive officers, for the most recently completed fiscal year, to the Company’s performance. The measures are utilized in our annual incentive compensation plan (“AIP”) and our cash long-term incentive compensation plan (“C-LTIP”) and are designed with the objective of aligning the executives’ interests with those of the Company’s stockholders.
Performance Measure |  | Compensation Weighting |  | For More Information
Adjusted Operating Income |  | 60% of AIP |  | Page 45
Adjusted ROCE |  | 40% of AIP |  | Page 45
Average Adjusted ROCE for the three-year performance period |  | 60% of C-LTIP |  | Page 47
Relative TSR |  | 40% of C-LTIP |  | Page 48
Total Shareholder Return Amount | $ 348.68 | 447.38 | 259.47 | 441.63 | 156.55
Peer Group Total Shareholder Return Amount | 226.81 | 234.79 | 172.36 | 209.49 | 133.23
Net Income (Loss) | $ 173,960,000 | $ 195,430,000 | $ 298,210,000 | $ 213,520,000 | $ 71,100,000
Company Selected Measure Amount | 12.4 | 20.1 | 39.9 | 34.8 | 15.4
PEO Name | Ms. McReynolds | Ms. McReynolds | Ms. McReynolds | Ms. McReynolds | Ms. McReynolds
Equity Awards Adjustments, Footnote |
| (iii) | The equity award adjustments for the covered year include the addition (or subtraction, as applicable) as set forth in the table below. The fair values of equity awards were calculated using closing stock price as of the applicable valuation dates and are not adjusted for present value of dividends (which are not payable with respect to RSUs granted to Named Executive Officers).
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | Year over Year Change in Fair |  | ​ |  | ​ |  | ​
​ | ​ | Year End Fair Value of | ​ | Value of Outstanding and | ​ | Year over Year Change in Fair Value of | ​ | Fair value of | ​ | ​
​ | ​ | Equity Awards Granted | ​ | Unvested | ​ | Equity Awards Granted in Prior Years | ​ | forfeited awards at | ​ | Total Equity Award
Year | ​ | During the Fiscal Year | ​ | Equity Awards | ​ | that Vested in the Year | ​ | end of prior year | ​ | Adjustments
Company’s PEO | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 797,886 |  | (395,310) |  | (187,883) |  | — |  | 214,693
Average of Non-PEO NEOs | ​ | ​ |  |  |  |  |  |  |  |
2024 |  | 137,647 |  | (65,000) |  | (39,842) |  | 96,198 |  | (63,393)
Prior Year Peer Group Total Shareholder Return | $ 216.56 | $ 235.83 | $ 180.19 | $ 216.63 | $ 130.88
Measure:: 1 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Adjusted Operating Income |  |  |  |
Adjusted Operating Income, Compensation Weighting % of AIP | 60.00% |  |  |  |
Measure:: 2 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Adjusted ROCE |  |  |  |
Adjusted ROCE, Compensation Weighting % of AIP | 40.00% |  |  |  |
Measure:: 3 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Other Performance Measure, Amount | 23.5 | 28.6 | 26.7 | 19.4 | 11.7
Name | Average Adjusted ROCE for the three-year performance period |  |  |  |
Average Adjusted ROCE for the three-year performance period, Compensation Weighting % of C-LTIP | 60.00% |  |  |  |
Measure:: 4 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Relative TSR |  |  |  |
Relative TSR, Compensation Weighting % of C-LTIP | 40.00% |  |  |  |
PEO | Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ (10,032) |  |  |  |
PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (989,748) |  |  |  |
PEO | Equity Awards Adjustments, Excluding Value Reported in Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 214,693 |  |  |  |
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 797,886 |  |  |  |
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (395,310) |  |  |  |
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (187,883) |  |  |  |
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (224,285) |  |  |  |
Non-PEO NEO | Equity Awards Adjustments, Excluding Value Reported in Compensation Table |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (63,393) |  |  |  |
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 137,647 |  |  |  |
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (65,000) |  |  |  |
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (39,842) |  |  |  |
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ 96,198 |  |  |  |

X
- Definition Adjusted Operating Income compensation weighting percentage of annual incentive compensation plan ("AIP"). + References No definition available. + Details
Name: | arcb_AdjustedOperatingIncomeCompensationWeightingPercentageOfAnnualIncentiveCompensationPlan
Namespace Prefix: | arcb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Adjusted Return on Capital Employed compensation weighting percentage of annual incentive compensation plan ("AIP"). + References No definition available. + Details
Name: | arcb_AdjustedRoceCompensationWeightingPercentageOfAnnualIncentiveCompensationPlan
Namespace Prefix: | arcb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average Adjusted Return on Capital Employed for the three-year performance period compensation weighting percentage of cash long-term incentive compensation plan ("C-LTIP"). + References No definition available. + Details
Name: | arcb_AverageAdjustedRoceForThreeYearPerformancePeriodCompensationWeightingPercentageOfCashLongTermIncentiveCompensationPlan
Namespace Prefix: | arcb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total shareholder return for the prior year peer group. + References No definition available. + Details
Name: | arcb_PriorYearPeerGroupTotalShareholderRtnAmt
Namespace Prefix: | arcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Relative Total Shareholder Return compensation weighting percentage of cash long-term incentive compensation plan ("C-LTIP"). + References No definition available. + Details
Name: | arcb_RelativeTsrCompensationWeightingPercentageOfCashLongTermIncentiveCompensationPlan
Namespace Prefix: | arcb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToNonPeoNeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_AdjToPeoCompFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_ChangedPeerGroupFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_CoSelectedMeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iii + Details
Name: | ecd_CompActuallyPaidVsCoSelectedMeasureTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph ii + Details
Name: | ecd_CompActuallyPaidVsNetIncomeTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph i + Details
Name: | ecd_CompActuallyPaidVsTotalShareholderRtnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii -Sentence B -Clause 1 -Subclause ii + Details
Name: | ecd_EqtyAwrdsAdjFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_MeasureName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_NamedExecutiveOfficersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_NonPeoNeoAvgCompActuallyPaidAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_NonPeoNeoAvgTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph vi + Details
Name: | ecd_OtherPerfMeasureAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupIssuersFnTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_PeerGroupTotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iii + Details
Name: | ecd_PeoActuallyPaidCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 3 + Details
Name: | ecd_PeoName
Namespace Prefix: | ecd_
Data Type: | xbrli:normalizedStringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph ii + Details
Name: | ecd_PeoTotalCompAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTable
Namespace Prefix: | ecd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 1 + Details
Name: | ecd_PvpTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 6 + Details
Name: | ecd_TabularListTableTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 2 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnAmt
Namespace Prefix: | ecd_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K -Number 229 -Section 402 -Subsection v -Paragraph 5 -Subparagraph iv + Details
Name: | ecd_TotalShareholderRtnVsPeerGroupTextBlock
Namespace Prefix: | ecd_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-9 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 60 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476176/805-60-65-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 323 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478666/740-323-65-2 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482765/220-10-50-6 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-3 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480175/815-40-65-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-8 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-11 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 250 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483443/250-10-50-4 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-10 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section 45 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479105/946-220-45-7 Reference 19: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1 Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-1 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 60B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483499/205-20-50-7 Reference 34: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 35: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1A Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-1B Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_NetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ecd_MeasureAxis=1
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=2
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=3
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_MeasureAxis=4
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_PeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_AggtChngPnsnValInSummryCompstnTblForAplblYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_EqtyAwrdsInSummryCompstnTblForAplblYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_EqtyAwrdsAdjsExclgValRprtdInSummryCompstnTblMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_YrEndFrValOfEqtyAwrdsGrntdInCvrdYrOutsdngAndUnvstdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_ChngInFrValOfOutsdngAndUnvstdEqtyAwrdsGrntdInPrrYrsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_ChngInFrValAsOfVstngDtOfPrrYrEqtyAwrdsVstdInCvrdYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_ExecutiveCategoryAxis=ecd_NonPeoNeoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ecd_AdjToCompAxis=ecd_FrValAsOfPrrYrEndOfEqtyAwrdsGrntdInPrrYrsFldVstngCondsDrngCvrdYrMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |