Debt - Summary of Debt Outstanding (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total Debt	$ 26.8	$ 42.4
Current portion of long-term debt	(10.0)	(15.8)
Long term-debt, net	16.8	26.6
ESCO Notes Payable
Debt Instrument [Line Items]
Total Debt	0.0	5.8	$ 5.8
Credit Facility
Debt Instrument [Line Items]
Total Debt	4.6	9.5
Encina Master Financing Agreement
Debt Instrument [Line Items]
Total Debt	$ 22.2	$ 27.1

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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

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

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