Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Effect of derivative instruments on the Consolidated Balance Sheets

The following table summarizes the fair values and classification of the Partnership’s derivative instruments in its Consolidated Balance Sheets:

	Fair Values of Derivative Instruments in the Consolidated Balance Sheet
	Derivative Assets					Derivative Liabilities
		Fair Values					Fair Values
	Balance Sheet Location	December 31, 2019		December 31, 2018		Balance Sheet Location	December 31, 2019		December 31, 2018
Derivatives not designated as hedging instruments:	Current:
Commodity contracts	Fair value of derivatives	$	—	$	4	Fair value of derivatives	$	667	$	—
Total derivatives not designated as hedging instruments		$	—	$	4		$	667	$	—

Effect of derivative instruments on the Consolidated Statement of Operations

Effect of Derivative Instruments on the Consolidated Statement of Operations For the Years Ended December 31, 2019, 2018, and 2017

	Location of Gain or (Loss) Recognized in Income on Derivatives	Amount of (Gain) or Loss Recognized in Income on Derivatives
		2019		2018			2017
Derivatives not designated as hedging instruments:
Commodity contracts	Cost of products sold	5,137		(14,024		)	1,304
Total derivatives not designated as hedging instruments		$	5,137	$	(14,024	)	$	1,304