Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value Disclosures [Abstract]

Assets (Liabilities) Measured at Fair Value

A summary of assets (liabilities) measured at fair value is as follows:

	As of March 31, 2020
	Total		Level 1		Level 2		Level 3
Commodity contract derivatives	$	23,531	$	5,377	$	18,154	$	—

	As of December 31, 2019
	Total			Level 1			Level 2			Level 3
Commodity contract derivatives	$	(3,116	)	$	(84	)	$	(3,032	)	$	—

Liabilities Measured at Fair Value on a Recurring Basis

The following is a reconciliation of the beginning and ending balances for liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

	Contingent Consideration for Acquisitions
	2020		2019
Balance at beginning of period, January 1	$	—	$	9,861
Change in estimates included in earnings	—		304
Settlements	—		(3,316		)
Balance at end of period, March 31	$	—	$	6,849

Estimated Fair Values of the Company's Financial Instruments

The estimated fair values of the Company’s financial instruments, which are not recorded at fair value, are as follows:

	As of March 31, 2020						As of December 31, 2019
	Asset (Liability) Carrying Amount			Fair Value			Asset (Liability) Carrying Amount			Fair Value
Financial liabilities:
Debt and lines of credit	$	(243,274	)	$	(335,615	)	$	(183,034	)	$	(338,482	)