Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of revenue

The following table presents the Partnership’s revenue, disaggregated by major product:

	Year Ended December 31,
(in thousands)	2019		2018
Ammonia	$	94,467	$	66,254
UAN	251,199		222,329
Urea products	17,430		20,633
Net sales, exclusive of freight and other	363,096		309,216
Freight revenue	33,436		33,567
Other revenue	7,645		8,299
Net sales	$	404,177	$	351,082

Summary of deferred revenue activity

A summary of the deferred revenue activity during the year ended December 31, 2019 is presented below:

(in thousands)
Balance at December 31, 2018	$	68,804
Add:
New prepay contracts entered into during the period (1)	45,538
Less:
Revenue recognized that was included in the contract liability balance at the beginning of the period	67,824
Revenue recognized related to contracts entered into during the period	18,004
Other changes	673
Balance at December 31, 2019	$	27,841

(1)Includes $26.8 million where payment associated with prepaid contracts was collected.