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Pay vs Performance Disclosure - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Pay vs Performance Disclosure          
Pay vs Performance Disclosure, Table

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​

Average

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Value of Initial Fixed $100

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​

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​

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​

​

​

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​

​

​

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Summary

​

Average

​

Investment Based On:

​

​

​

​

​

​

Summary

​

Summary

​

​

​

Compensation

​

Compensation

​

Compensation

​

​

​

Peer Group

​

​

​

​

​

​

Compensation

​

Compensation

​

Compensation

​

Actually Paid

​

Table Total

​

Actually Paid

​

Total

​

Total

​

​

​

​

​

​

Table Total

​

Table Total

​

Actually Paid

​

to Former

​

for Non-PEO

​

to Non-PEO

​

Shareholder

​

Shareholder

​

​

​

Operating

​

​

for PEO

​

for Former PEO (f)

​

to PEO(g)(h)

​

PEO(f)(g)(h)

​

NEOs

​

NEOs(i)(j)

​

Return

​

Return(k)

​

Net Income

​

Income(l)

Year

    

($)

​

($)

    

($)

​

($)

    

($)

    

($)

    

($)

    

($)

    

($)

    

($)

2024 (a)

​

2,811,063

​

416,092

​

4,585,714

​

(289,466)

​

1,495,092

​

2,230,744

​

271

​

210

​

2,386,680,000

​

3,251,157,000

2023 (b)

​

—

​

5,603,352

​

—

​

6,204,611

​

1,903,937

​

2,266,462

​

217

​

159

​

2,346,581,000

​

3,186,376,000

2022 (c)

​

—

​

5,477,351

​

—

​

8,519,969

​

2,201,556

​

3,340,752

​

193

​

112

​

2,172,650,000

​

2,954,491,000

2021 (d)

​

—

​

12,764,271

​

—

​

19,042,393

​

4,150,852

​

5,926,087

​

161

​

173

​

2,164,685,000

​

2,917,168,000

2020 (e)

​

—

​

8,990,958

​

—

​

9,135,920

​

3,266,357

​

3,273,105

​

103

​

145

​

1,752,302,000

​

2,419,336,000

(a)

For 2024, Brad Beckham was the PEO, Gregory D. Johnson was the Former PEO, and the non-PEOs included Greg Henslee, David O’Reilly, Brent Kirby, Jeremy Fletcher, and Scott R. Ross.  

(b)

For 2023, Gregory D. Johnson was the PEO and the non-PEOs included Greg Henslee, David O’Reilly, Brad Beckham, Brent Kirby, Jeremy Fletcher, and Scott R. Ross.  

(c)

For 2022, Gregory D. Johnson was the PEO and non-PEO NEOs included Greg Henslee, David O’Reilly, Brad Beckham, Jeremy Fletcher, Brent G. Kirby, and Tom McFall.  

(d)

For 2021, Gregory D. Johnson was the PEO and non-PEO NEOs included Greg Henslee, David O’Reilly, Brad Beckham, Brent G. Kirby, Tom McFall, and Jeff M. Shaw.

(e)

For 2020, Gregory D. Johnson was the PEO and non-PEO NEOs included Greg Henslee, David O’Reilly, Tom McFall, and Jeff M. Shaw.

(f)

In November of 2023, in connection with Mr. Johnson’s planned retirement in January of 2024, his stock option award granted in February of 2023 was cancelled and substituted with a cash-based award with an equivalent grant-date fair value of the cancelled stock option award equal to $1,475,000, which is included in the “Bonus” column of the “Summary Compensation Table” for the year ended December 31, 2023.  Such cash-based award was earned by and paid to Mr. Johnson in early 2024, following his retirement, and such cancellation and substitution was recommended by the Human Capital and Compensation Committee and approved by the Board.  Therefore, Mr. Johnson is shown as having no equity-based compensation awarded in 2023.  Mr. Johnson retired as Chief Executive Officer on January 31, 2024, at which time, in accordance with the Company’s policy for retirement eligible Team Members, his outstanding unvested awards vested and the remaining term was set to one year.

(g)

The amounts in the following table represent each of the amounts deducted from and added to the equity award values, as presented in the “Summary Compensation Table,” for the PEO for the applicable year for purposes of computing the “compensation actually paid” amounts appearing in the “Compensation Actually Paid to PEO” column of the “Pay Versus Performance” table.  There was no change in pension values for the years ended December 31, 2024, 2023, 2022, 2021, and 2020, as the Company did not offer a pension plan.  No awards were granted and vested in the same year or forfeited in 2024.

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​

​

​

Total

​

Total

​

​

Grant Date

​

Year-End

​

Change in Fair Value

​

Change in Fair Value

​

Equity Value

​

Equity Value

​

​

Fair Value of

​

Value of

​

as of Year-End

​

as of the Vesting Date

​

Reflected in

​

Reflected in

​

​

Equity Awards

​

Equity Awards

​

of Any Prior Year

​

of Any Prior Year

​

Compensation

​

Compensation

​

​

Granted During

​

Granted During

​

Awards that Remain

​

Awards that Vested

​

Actually Paid

​

Actually Paid

​

​

Applicable Year(f)

​

Applicable Year(f)

​

Unvested as of Year-End

​

During Applicable Year (f)

​

to PEO

​

to Former PEO

Year

​

($)

​

($)

​

($)

​

($)

​

($)

​

($)

2024 PEO

​

(1,250,586)

​

1,473,508

​

1,353,677

​

198,052

​

1,774,651

​

—

2024 Former PEO

​

—

​

—

​

—

​

(705,558)

​

—

​

(705,558)

2023

​

—

​

—

​

1,054,053

​

(452,794)

​

—

​

601,259

2022

​

(1,425,055)

​

2,669,294

​

2,461,678

​

(663,299)

​

—

​

3,042,618

2021

​

(1,349,999)

​

3,186,484

​

4,659,462

​

(217,825)

​

—

​

6,278,122

2020

​

(1,249,949)

​

1,514,108

​

301,086

​

(420,283)

​

—

​

144,962

​

(h)

The table below identifies the weighted-average assumptions used in the Black-Scholes option pricing model for valuing option awards included in compensation actually paid to PEO:

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​

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​

​

​

December 31, 

​

​

2024

​

2023

​

​

2022

​

​

2021

​

2020

​

​

​

PEO

​

Former PEO (f)

​

​

​

​

​

​

​

​

​

​

​

Risk free interest rate

​

4.29

%

​

3.97

%

​

3.82

%

​

3.09

%

​

1.02

%

0.65

%

Expected life

​

7.3

Years

​

1.0

Years

​

7.2

Years

​

7.1

Years

​

7.0

Years

7.0

Years

Expected volatility

​

25.5

%

​

27.2

%

​

28.3

%

​

29.6

%

​

29.7

%

29.3

%

Expected dividend yield

​

—

%

​

—

%

​

—

%

​

—

%

​

—

%

—

%

​

(i)

The amounts in the following table represent each of the amounts deducted from and added to the equity award values, as presented in the “Summary Compensation Table,” for the non-PEO NEOs for the applicable year for purposes of computing the “compensation actually paid” amounts appearing in the “Average Compensation Actually Paid to non-PEO NEOs” column of the “Pay Versus Performance” table.  There was no change in pension values for the years ended December 31, 2024, 2023, 2022, 2021, and 2020, as the Company did not offer a pension plan.  No awards were granted and vested in the same year or forfeited in 2024.

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​

​

​

​

​

​

​

Grant Date

​

Year-End

​

Change in Fair Value

​

Change in Fair Value

​

Total

​

​

Fair Value of

​

Value of

​

as of Year-End

​

as of the Vesting Date

​

Equity Value

​

​

Equity Awards

​

Equity Awards

​

of Any Prior Year

​

of Any Prior Year

​

Reflected in

​

​

Granted During

​

Granted During

​

Awards that Remain

​

Awards that Vested

​

Compensation

​

​

Applicable Year

​

Applicable Year

​

Unvested as of Year-End

​

During Applicable Year

​

Actually Paid

Year

​

($)

​

($)

​

($)

​

($)

​

($)

2024

​

(522,926)

​

649,752

​

480,877

​

127,949

​

735,652

2023

​

(592,557)

​

727,429

​

259,860

​

(32,207)

​

362,525

2022

​

(989,596)

​

1,747,461

​

471,834

​

(90,504)

​

1,139,196

2021

​

(479,515)

​

1,039,838

​

1,217,694

​

(2,782)

​

1,775,235

2020

​

(578,083)

​

677,148

​

105,700

​

(198,017)

​

6,748

​

(j)

The table below identifies the weighted-average assumptions used in the Black-Scholes option pricing model for valuing option awards included in average compensation actually paid to non-PEO NEOs:

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 

​

​

2024

​

​

2023

​

​

2022

​

​

2021

​

2020

​

Risk free interest rate

​

3.95

%

​

3.83

%

​

3.12

%

​

1.00

%

0.69

%

Expected life

​

6.6

Years

​

7.3

Years

​

7.2

Years

​

7.0

Years

6.9

Years

Expected volatility

​

23.3

%

​

28.2

%

​

29.5

%

​

29.6

%

29.2

%

Expected dividend yield

​

—

%

​

—

%

​

—

%

​

—

%

—

%

​

(k)

Peer Group is the Standard and Poor’s S&P 500 Retail Index used for purposes of Item 201(e) of Regulation S-K.  Please see Item 5 “Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities” included on the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, for further discussion of its peer group.

(l)

We determined Operating Income to be the most important financial performance measure used to link Company performance to Compensation Actually Paid to our PEO and Non-PEO NEOs for fiscal 2024.

       
Company Selected Measure Name Operating Income        
Named Executive Officers, Footnote

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​

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​

​

​

​

​

​

​

Average

​

​

​

Value of Initial Fixed $100

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Summary

​

Average

​

Investment Based On:

​

​

​

​

​

​

Summary

​

Summary

​

​

​

Compensation

​

Compensation

​

Compensation

​

​

​

Peer Group

​

​

​

​

​

​

Compensation

​

Compensation

​

Compensation

​

Actually Paid

​

Table Total

​

Actually Paid

​

Total

​

Total

​

​

​

​

​

​

Table Total

​

Table Total

​

Actually Paid

​

to Former

​

for Non-PEO

​

to Non-PEO

​

Shareholder

​

Shareholder

​

​

​

Operating

​

​

for PEO

​

for Former PEO (f)

​

to PEO(g)(h)

​

PEO(f)(g)(h)

​

NEOs

​

NEOs(i)(j)

​

Return

​

Return(k)

​

Net Income

​

Income(l)

Year

    

($)

​

($)

    

($)

​

($)

    

($)

    

($)

    

($)

    

($)

    

($)

    

($)

2024 (a)

​

2,811,063

​

416,092

​

4,585,714

​

(289,466)

​

1,495,092

​

2,230,744

​

271

​

210

​

2,386,680,000

​

3,251,157,000

2023 (b)

​

—

​

5,603,352

​

—

​

6,204,611

​

1,903,937

​

2,266,462

​

217

​

159

​

2,346,581,000

​

3,186,376,000

2022 (c)

​

—

​

5,477,351

​

—

​

8,519,969

​

2,201,556

​

3,340,752

​

193

​

112

​

2,172,650,000

​

2,954,491,000

2021 (d)

​

—

​

12,764,271

​

—

​

19,042,393

​

4,150,852

​

5,926,087

​

161

​

173

​

2,164,685,000

​

2,917,168,000

2020 (e)

​

—

​

8,990,958

​

—

​

9,135,920

​

3,266,357

​

3,273,105

​

103

​

145

​

1,752,302,000

​

2,419,336,000

(a)

For 2024, Brad Beckham was the PEO, Gregory D. Johnson was the Former PEO, and the non-PEOs included Greg Henslee, David O’Reilly, Brent Kirby, Jeremy Fletcher, and Scott R. Ross.  

(b)

For 2023, Gregory D. Johnson was the PEO and the non-PEOs included Greg Henslee, David O’Reilly, Brad Beckham, Brent Kirby, Jeremy Fletcher, and Scott R. Ross.  

(c)

For 2022, Gregory D. Johnson was the PEO and non-PEO NEOs included Greg Henslee, David O’Reilly, Brad Beckham, Jeremy Fletcher, Brent G. Kirby, and Tom McFall.  

(d)

For 2021, Gregory D. Johnson was the PEO and non-PEO NEOs included Greg Henslee, David O’Reilly, Brad Beckham, Brent G. Kirby, Tom McFall, and Jeff M. Shaw.

(e)

For 2020, Gregory D. Johnson was the PEO and non-PEO NEOs included Greg Henslee, David O’Reilly, Tom McFall, and Jeff M. Shaw.

Peer Group Issuers, Footnote

(k)

Peer Group is the Standard and Poor’s S&P 500 Retail Index used for purposes of Item 201(e) of Regulation S-K.  Please see Item 5 “Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities” included on the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, for further discussion of its peer group.

       
Adjustment To PEO Compensation, Footnote

(g)

The amounts in the following table represent each of the amounts deducted from and added to the equity award values, as presented in the “Summary Compensation Table,” for the PEO for the applicable year for purposes of computing the “compensation actually paid” amounts appearing in the “Compensation Actually Paid to PEO” column of the “Pay Versus Performance” table.  There was no change in pension values for the years ended December 31, 2024, 2023, 2022, 2021, and 2020, as the Company did not offer a pension plan.  No awards were granted and vested in the same year or forfeited in 2024.

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​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Total

​

Total

​

​

Grant Date

​

Year-End

​

Change in Fair Value

​

Change in Fair Value

​

Equity Value

​

Equity Value

​

​

Fair Value of

​

Value of

​

as of Year-End

​

as of the Vesting Date

​

Reflected in

​

Reflected in

​

​

Equity Awards

​

Equity Awards

​

of Any Prior Year

​

of Any Prior Year

​

Compensation

​

Compensation

​

​

Granted During

​

Granted During

​

Awards that Remain

​

Awards that Vested

​

Actually Paid

​

Actually Paid

​

​

Applicable Year(f)

​

Applicable Year(f)

​

Unvested as of Year-End

​

During Applicable Year (f)

​

to PEO

​

to Former PEO

Year

​

($)

​

($)

​

($)

​

($)

​

($)

​

($)

2024 PEO

​

(1,250,586)

​

1,473,508

​

1,353,677

​

198,052

​

1,774,651

​

—

2024 Former PEO

​

—

​

—

​

—

​

(705,558)

​

—

​

(705,558)

2023

​

—

​

—

​

1,054,053

​

(452,794)

​

—

​

601,259

2022

​

(1,425,055)

​

2,669,294

​

2,461,678

​

(663,299)

​

—

​

3,042,618

2021

​

(1,349,999)

​

3,186,484

​

4,659,462

​

(217,825)

​

—

​

6,278,122

2020

​

(1,249,949)

​

1,514,108

​

301,086

​

(420,283)

​

—

​

144,962

​

(h)

The table below identifies the weighted-average assumptions used in the Black-Scholes option pricing model for valuing option awards included in compensation actually paid to PEO:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 

​

​

2024

​

2023

​

​

2022

​

​

2021

​

2020

​

​

​

PEO

​

Former PEO (f)

​

​

​

​

​

​

​

​

​

​

​

Risk free interest rate

​

4.29

%

​

3.97

%

​

3.82

%

​

3.09

%

​

1.02

%

0.65

%

Expected life

​

7.3

Years

​

1.0

Years

​

7.2

Years

​

7.1

Years

​

7.0

Years

7.0

Years

Expected volatility

​

25.5

%

​

27.2

%

​

28.3

%

​

29.6

%

​

29.7

%

29.3

%

Expected dividend yield

​

—

%

​

—

%

​

—

%

​

—

%

​

—

%

—

%

​

       
Non-PEO NEO Average Total Compensation Amount $ 1,495,092 $ 1,903,937 $ 2,201,556 $ 4,150,852 $ 3,266,357
Non-PEO NEO Average Compensation Actually Paid Amount $ 2,230,744 2,266,462 3,340,752 5,926,087 3,273,105
Adjustment to Non-PEO NEO Compensation Footnote

(i)

The amounts in the following table represent each of the amounts deducted from and added to the equity award values, as presented in the “Summary Compensation Table,” for the non-PEO NEOs for the applicable year for purposes of computing the “compensation actually paid” amounts appearing in the “Average Compensation Actually Paid to non-PEO NEOs” column of the “Pay Versus Performance” table.  There was no change in pension values for the years ended December 31, 2024, 2023, 2022, 2021, and 2020, as the Company did not offer a pension plan.  No awards were granted and vested in the same year or forfeited in 2024.

​

​

​

​

​

​

​

​

​

​

​

​

​

Grant Date

​

Year-End

​

Change in Fair Value

​

Change in Fair Value

​

Total

​

​

Fair Value of

​

Value of

​

as of Year-End

​

as of the Vesting Date

​

Equity Value

​

​

Equity Awards

​

Equity Awards

​

of Any Prior Year

​

of Any Prior Year

​

Reflected in

​

​

Granted During

​

Granted During

​

Awards that Remain

​

Awards that Vested

​

Compensation

​

​

Applicable Year

​

Applicable Year

​

Unvested as of Year-End

​

During Applicable Year

​

Actually Paid

Year

​

($)

​

($)

​

($)

​

($)

​

($)

2024

​

(522,926)

​

649,752

​

480,877

​

127,949

​

735,652

2023

​

(592,557)

​

727,429

​

259,860

​

(32,207)

​

362,525

2022

​

(989,596)

​

1,747,461

​

471,834

​

(90,504)

​

1,139,196

2021

​

(479,515)

​

1,039,838

​

1,217,694

​

(2,782)

​

1,775,235

2020

​

(578,083)

​

677,148

​

105,700

​

(198,017)

​

6,748

​

(j)

The table below identifies the weighted-average assumptions used in the Black-Scholes option pricing model for valuing option awards included in average compensation actually paid to non-PEO NEOs:

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

December 31, 

​

​

2024

​

​

2023

​

​

2022

​

​

2021

​

2020

​

Risk free interest rate

​

3.95

%

​

3.83

%

​

3.12

%

​

1.00

%

0.69

%

Expected life

​

6.6

Years

​

7.3

Years

​

7.2

Years

​

7.0

Years

6.9

Years

Expected volatility

​

23.3

%

​

28.2

%

​

29.5

%

​

29.6

%

29.2

%

Expected dividend yield

​

—

%

​

—

%

​

—

%

​

—

%

—

%

       
Compensation Actually Paid vs. Total Shareholder Return

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COMPENSATION ACTUALLY PAID VERSUS TOTAL SHAREHOLDER RETURN

Graphic

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Compensation Actually Paid vs. Net Income

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COMPENSATION ACTUALLY PAID VERSUS FINANCIAL PERFORMANCE MEASURES

Graphic

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Compensation Actually Paid vs. Company Selected Measure

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COMPENSATION ACTUALLY PAID VERSUS FINANCIAL PERFORMANCE MEASURES

Graphic

​

       
Total Shareholder Return Vs Peer Group

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TOTAL SHAREHOLDER RETURN

Graphic

​

       
Tabular List, Table

Below, in an unranked order, are the most important financial performance measures used to link executive compensation actually paid to the Company’s NEOs, except Greg Henslee and David O’Reilly, to the Company’s performance for the year ended December 31, 2024, as further described in the “Compensation Discussion and Analysis” portion of this proxy statement.  Greg Henslee and David O’Reilly, in consultation with the Human Capital and Compensation Committee, are excluded from participation in the annual cash incentive compensation plan pursuant to their responsibilities of providing strategic direction and guidance to the Company and their limited role in the Company’s day-to-day operational activities and, therefore, excluded from these financial performance measures.

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MOST IMPORTANT PERFORMANCE MEASURES

Comparable Store Sales

Operating Income

Return on Invested Capital

Free Cash Flow

       
Total Shareholder Return Amount $ 271 217 193 161 103
Peer Group Total Shareholder Return Amount 210 159 112 173 145
Net Income (Loss) $ 2,386,680,000 $ 2,346,581,000 $ 2,172,650,000 $ 2,164,685,000 $ 1,752,302,000
Company Selected Measure Amount 3,251,157,000 3,186,376,000 2,954,491,000 2,917,168,000 2,419,336,000
PEO Name Brad Beckham        
Measure:: 1          
Pay vs Performance Disclosure          
Name Comparable Store Sales        
Measure:: 2          
Pay vs Performance Disclosure          
Name Operating Income        
Non-GAAP Measure Description

(l)

We determined Operating Income to be the most important financial performance measure used to link Company performance to Compensation Actually Paid to our PEO and Non-PEO NEOs for fiscal 2024.

       
Measure:: 3          
Pay vs Performance Disclosure          
Name Return on Invested Capital        
Measure:: 4          
Pay vs Performance Disclosure          
Name Free Cash Flow        
Brad Beckham (PEO)          
Pay vs Performance Disclosure          
PEO Total Compensation Amount $ 2,811,063        
PEO Actually Paid Compensation Amount 4,585,714        
Gregory D. Johnson (Former PEO)          
Pay vs Performance Disclosure          
PEO Total Compensation Amount 416,092 $ 5,603,352 $ 5,477,351 $ 12,764,271 $ 8,990,958
PEO Actually Paid Compensation Amount (289,466) 6,204,611 8,519,969 19,042,393 9,135,920
PEO          
Pay vs Performance Disclosure          
Bonus 1,475,000        
Pension $ 0 $ 0 $ 0 $ 0 $ 0
PEO | Brad Beckham (PEO)          
Pay vs Performance Disclosure          
Risk free interest rate 4.29%        
Expected volatility 25.50%        
Expected life 7 years 3 months 18 days        
Expected dividend yield 0.00%        
PEO | Brad Beckham (PEO) | Equity Awards Adjustments          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ 1,774,651        
PEO | Brad Beckham (PEO) | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount (1,250,586)        
PEO | Brad Beckham (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 1,473,508        
PEO | Brad Beckham (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 1,353,677        
PEO | Brad Beckham (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 $ 198,052        
PEO | Gregory D. Johnson (Former PEO)          
Pay vs Performance Disclosure          
Risk free interest rate 3.97% 3.82% 3.09% 1.02% 0.65%
Expected volatility 27.20% 28.30% 29.60% 29.70% 29.30%
Expected life 1 year 7 years 2 months 12 days 7 years 1 month 6 days 7 years 7 years
Expected dividend yield 0.00% 0.00% 0.00% 0.00% 0.00%
PEO | Gregory D. Johnson (Former PEO) | Equity Awards Adjustments          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount $ (705,558) $ 601,259 $ 3,042,618 $ 6,278,122 $ 144,962
PEO | Gregory D. Johnson (Former PEO) | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount     (1,425,055) (1,349,999) (1,249,949)
PEO | Gregory D. Johnson (Former 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     2,669,294 3,186,484 1,514,108
PEO | Gregory D. Johnson (Former 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   1,054,053 2,461,678 4,659,462 301,086
PEO | Gregory D. Johnson (Former 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 $ (705,558) $ (452,794) $ (663,299) $ (217,825) $ (420,283)
Non-PEO NEO          
Pay vs Performance Disclosure          
Risk free interest rate 3.95% 3.83% 3.12% 1.00% 0.69%
Expected volatility 23.30% 28.20% 29.50% 29.60% 29.20%
Expected life 6 years 7 months 6 days 7 years 3 months 18 days 7 years 2 months 12 days 7 years 6 years 10 months 24 days
Expected dividend yield 0.00% 0.00% 0.00% 0.00% 0.00%
Pension $ 0 $ 0 $ 0 $ 0 $ 0
Non-PEO NEO | Equity Awards Adjustments          
Pay vs Performance Disclosure          
Adjustment to Compensation, Amount 735,652 362,525 1,139,196 1,775,235 6,748
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 (522,926) (592,557) (989,596) (479,515) (578,083)
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 649,752 727,429 1,747,461 1,039,838 677,148
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 480,877 259,860 471,834 1,217,694 105,700
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 $ 127,949 $ (32,207) $ (90,504) $ (2,782) $ (198,017)