Derivative Instruments and Hedging Activities (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Effect of Derivative Instruments on the Consolidated Balance Sheets

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

	Fair Values of Derivative Instruments in the Consolidated and Condensed Balance Sheets
	Derivative Assets					Derivative Liabilities
		Fair Values					Fair Values
	Balance Sheet Location	March 31, 2020		December 31, 2019		Balance Sheet Location	March 31, 2020		December 31, 2019
Derivatives not designated as hedging instruments:	Current:
Commodity contracts	Fair value of derivatives	$	2	$	—	Fair value of derivatives	$	—	$	667
Total derivatives not designated as hedging instruments		$	2	$	—		$	—	$	667

Effect of Derivative Instruments on the Consolidated Statement of Operations

Effect of Derivative Instruments on the Consolidated and Condensed Statements of Operations

For the Three Months Ended March 31, 2020 and 2019

	Location of Gain (Loss) Recognized in Income on  Derivatives	Amount of Gain (Loss) Recognized in Income on Derivatives
		2020		2019
Derivatives not designated as hedging instruments:
Commodity contracts	Cost of products sold	$	33	$	(239	)
Total effect of derivatives not designated as hedging instruments		$	33	$	(239	)