Long-Term Debt - Equipment Loans (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Long-term Debt	$ 527,134	$ 543,697
Cost of funds rate	10.00%
Equipment Loans [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 31,100
Long-term Debt	$ 10,000	$ 20,400
Stated percentage	0.00%
Long-term Debt, Maturities, Weighted Average of Monthly Repayments	$ 1,000
Equipment Loans [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, term (in months)	6 months
Stated percentage	0.00%
Equipment Loans [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, term (in months)	36 months
Stated percentage	800.00%

Long-term Debt, Maturities, Weighted Average of Monthly Repayments

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
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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
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- Definition

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

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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

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.

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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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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