Fronting Fee Percentage Charged For Issuance Of Letters Of Credit

No definition available.

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- Definition

Interest to EBITDA

+ References

No definition available.

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- Definition

Line of Credit, Participation Fee Percentage

+ References

No definition available.

+ Details

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- Definition

Maximum Percentage Of Capital Stock Guaranteed By Companys Material Non US Subsidiaries For Obligations Under The Senior Credit Facility

+ References

No definition available.

+ Details

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- Definition

Amount of amortization expense attributable to debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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-Subparagraph (SX 210.5-03(8))
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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.

+ Details

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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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.

+ Details

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Name Accounting Standards Codification
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Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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- Definition

Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

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

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

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Debt And Credit Arrangements - Senior Secured Revolving Credit Facility (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Aug. 03, 2011
Debt Instrument
Restricted cash, noncurrent	$ 1,000,000		$ 1,000,000
Financing costs amortization	300,000	$ 300,000
Senior Secured Revolving Credit Facility \| Revolving Credit Facility
Debt Instrument
Debt instrument, term			5 years
Maximum borrowing capacity	$ 450,000,000.0
Line of credit fronting fee (as a percentage)	0.125%
Debt instrument stated interest rate	1.00%
Maximum percentage of capital stock guaranteed by company	65.00%
Senior Secured Revolving Credit Facility \| Revolving Credit Facility \| Adjusted Base Rate
Debt Instrument
Debt Instrument, Basis Spread on Variable Rate	1.00%
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility
Debt Instrument
Line of credit fronting fee (as a percentage)	0.125%
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility
Debt Instrument
Debt instrument, term	5 years
Debt issuance costs	$ 2,500,000
Unamortized debt issuance costs	2,300,000
Financing costs amortization	100,000	100,000
Long term debt	$ 247,000,000		$ 239,000,000
Debt instrument stated interest rate	4.25%
Interest expense	$ 2,500,000
Line of credit outstanding	44,900,000
Line of credit remaining borrowing amount	$ 158,100,000
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility \| Minimum
Debt Instrument
Line of credit commitment fee (as a percentage)	0.20%
Line of credit participation fee (as a percentage)	1.50%
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility \| Maximum
Debt Instrument
Line of credit commitment fee (as a percentage)	0.375%
Line of credit participation fee (as a percentage)	2.50%
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility Sub-limit - Swingline
Debt Instrument
Maximum borrowing capacity	$ 25,000,000.0
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility Sub-limit - Letters of Credit
Debt Instrument
Maximum borrowing capacity	100,000,000.0
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility Sub-limit - Foreign Currency
Debt Instrument
Maximum borrowing capacity	100,000,000.0
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility Sub-limit - Foreign Borrower
Debt Instrument
Maximum borrowing capacity	100,000,000.0
Senior secured revolving credit facility due November 2022 \| Revolving Credit Facility Sub-limit - Expansion Option
Debt Instrument
Maximum borrowing capacity	$ 225,000,000.0
Convertible Notes, Due 2018 \| Convertible Debt
Debt Instrument
Leverage ratio	3.25
Unamortized debt issuance costs	$ 100,000		$ 100,000
Financing costs amortization	0	200,000
Debt instrument stated interest rate				2.00%
Interest expense	$ 1,400,000	$ 4,600,000
Convertible Notes, Due 2018 \| Convertible Debt \| Minimum
Debt Instrument
Interest to EBITDA	3.0
Convertible Notes, Due 2018 \| Convertible Debt \| Maximum
Debt Instrument
Leverage ratio	3.75