Amount of increase borrowing commitment available under the revolving credit facility and term loans.

No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

+ Details

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- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Long-Term Debt (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2017	Jun. 25, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Line of credit, increase in aggregate commitments	$ 300,000	$ 300,000
Senior Notes	500,000	500,000
Total debt outstanding, Fair value	984,017	984,017		$ 715,330
Short-term debt	3	3
Senior Notes Series A Due February 27, 2020 [Member]
Debt Instrument [Line Items]
Long term debt, face amount	$ 150,000	$ 150,000
Debt instrument, interest rate, stated percentage	2.72%	2.72%
Senior Notes Series B Due February 27, 2023 [Member]
Debt Instrument [Line Items]
Long term debt, face amount	$ 350,000	$ 350,000
Debt instrument, interest rate, stated percentage	3.29%	3.29%
Term Loan Due September 15, 2032 [Member] \| Stewart & Stevenson LLC [Member]
Debt Instrument [Line Items]
Term debt assumed, paid off	$ 12,135
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long term debt, face amount			$ 550,000
Average borrowing under revolving credit facility		$ 270,446
Commitment amount		$ 25,000
Commitment fee		0.10%
Weighted average interest rate	2.20%	2.20%
Revolving Credit Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate, variable rate basis		LIBOR
Basis spread on variable rate		1.00%
Line Of Credit [Member]
Debt Instrument [Line Items]
Credit facility, amount outstanding	$ 1,117	$ 1,117
Line Of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, amount outstanding	$ 8,893	$ 8,893