Debt Instrument, Covenant, Interest Coverage Ratio, Minimum

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- Definition

Debt Instrument, Covenant, Leverage Ratio, Maximum

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No definition available.

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- Definition

Debt Instrument, Covenant, Number of Quarters Used for Measurement of Covenants

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No definition available.

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- Definition

Debt Instrument, Number of Series of Debt Issued

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- Definition

Line of Credit Facility, Extension Capacity

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No definition available.

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- Definition

Performance bonds not under the credit facility.

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No definition available.

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- Definition

Performance bonds under credit facility

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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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

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- Definition

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

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- Definition

The amount of cash paid for interest during the period.

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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

+ Details

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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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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

No definition available.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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No definition available.

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Debt and Capital Lease Obligations (Details) $ in Thousands	12 Months Ended
Debt and Capital Lease Obligations (Details) $ in Thousands	Dec. 31, 2017 USD ($) instrument quarter series	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) instrument
Debt Instrument [Line Items]
Debt Instrument, Number of Series of Debt Issued \| series	2
Long-term Debt, Percentage Bearing Fixed Interest, Amount	$ 200,000
Debt Instrument, Maturity Date	Aug. 29, 2019
Long-term Debt	$ (228,000)	$ (218,000)
Long-term Debt, Excluding Current Maturities	226,989	216,488
Cash payments for interest	10,527	11,248	$ 12,313
Line of Credit Facility, Current Borrowing Capacity	400,000
Uncommitted borrowings available	50,000
Line of Credit Facility, Maximum Borrowing Capacity	450,000
Performance bonds under credit facility	14,300
Line of Credit Facility, Remaining Borrowing Capacity	307,700
Performance Bonds	14,000
Long-term Debt, Percentage Bearing Variable Interest, Amount	$ 28,000
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Number of Instruments Held \| instrument	2		2
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 150,000
Long-term Debt	(150,000)	(150,000)
Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt	$ (78,000)	(68,000)
Debt Instrument, Covenant, Number of Quarters Used for Measurement of Covenants \| quarter	4
Debt Instrument, Covenant, Interest Coverage Ratio, Minimum	3.0
Debt Instrument, Covenant, Leverage Ratio, Minimum	2.5
Debt issuance costs [Domain]
Debt Instrument [Line Items]
Long-term Debt	$ (1,011)	$ (1,512)
senior notes series a [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 75,000
Debt Instrument, Maturity Date	Sep. 30, 2021
Debt Instrument, Interest Rate, Effective Percentage	4.01%
Senior Notes Series B [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 75,000
Debt Instrument, Maturity Date	Sep. 30, 2023
Debt Instrument, Interest Rate, Effective Percentage	4.11%
Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%