Long-Term Debt, Net - Additional Information (Details)	3 Months Ended
Mar. 31, 2020 USD ($) SeriesNote instrument
Debt Instrument [Line Items]
Financing lease obligations	$ 0
Number of series of debt issued \| SeriesNote	2
Maturity date	Jun. 19, 2023
Current borrowing capacity	$ 300,000,000
Uncommitted borrowings available	100,000,000
Maximum borrowing capacity	$ 400,000,000
Basis spread on variable rate	1.375%
Performance bonds under credit facility	$ 14,600,000
Remaining borrowing capacity	131,400,000
Performance bonds	$ 6,600,000
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, number of instruments held \| instrument	2
Derivative, notional amount	$ 50,000,000
Credit Facility [Member]
Debt Instrument [Line Items]
Interest coverage ratio, minimum	3.00%
Covenant leverage ratio, maximum	2.50%
Calculated covenant leverage ratio	1.93%
Calculated interest coverage ratio	8.59%
Senior Notes [Member]
Debt Instrument [Line Items]
Face amount	$ 150,000,000
Senior Notes Series A [Member]
Debt Instrument [Line Items]
Face amount	$ 75,000,000
Interest rate, effective percentage	4.01%
Maturity date	Sep. 30, 2021
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Face amount	$ 75,000,000
Interest rate, effective percentage	4.11%
Maturity date	Sep. 30, 2023
Maximum [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.00%

Debt instrument covenant interest coverage ratio.

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- Definition

Debt Instrument, Covenant, Interest Coverage Ratio, Minimum

+ References

No definition available.

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- Definition

Debt instrument covenant leverage ratio.

+ References

No definition available.

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- Definition

Debt Instrument, Covenant, Leverage Ratio, Maximum

+ References

No definition available.

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- Definition

Debt Instrument, Number of Series of Debt Issued

+ References

No definition available.

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- Definition

Line of credit facility, extension capacity.

+ References

No definition available.

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- Definition

Performance bonds not under the credit facility.

+ References

No definition available.

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- Definition

Performance bonds under credit facility

+ References

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

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
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- Definition

The number of derivative instruments of a particular group held by the entity.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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-SubTopic 10
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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