Number of Salt Water Disposal Wells

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Short-Term financing which is expected to be paid back relatively quickly, such as by a subsequent longer-term loan. Also called swing loan or bridge financing.

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

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Acquisition of Clearwater - Narrative (Details) $ in Millions		3 Months Ended	12 Months Ended
	Oct. 05, 2018 USD ($) well	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
Rights offering, aggregate offering price	$ 32.5
Term Loan \| Ares \| Line of Credit
Business Acquisition [Line Items]
Additional term loan from credit agreement	10.0
Clearwater
Business Acquisition [Line Items]
Consideration	$ 42.3
Number of salt water disposal wells in service \| well	3
Bridge loan	$ 32.5
Transaction costs		$ 0.3	$ 1.1