Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

Revenue Recognition [Abstract]

Contract with Customer, Asset and Liability [Table Text Block]

Contract Assets

The following table presents a reconciliation of our contract assets:

	Three months ended
	March 31,
	2021		2020
	(Thousands)
Balance at beginning of period	$	3,395	$	554
Revenue recognized in excess of amounts invoiced	1,121		620
Balance at end of period	$	4,516	$	1,174

Contract Liabilities

The following table presents a reconciliation of our contract liabilities:

	Three months ended
	March 31,
	2021		2020
	(Thousands)
Balance at beginning of period	$	4,610	$	5,464
Recognized in Revenue	(232)		(213)
Balance at end of period	$	4,378	$	5,251

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

The following table presents the amount of the contract liabilities balance expected to be recognized as revenue when performance obligations are satisfied and the transaction price allocated to the remaining performance obligations under certain contracts as of March 31, 2021.

	Contract Liabilities		Remaining Performance Obligations
	(Thousands)
2021 (remainder)	$	707	$	314,230
2022	1,029		410,694
2023	1,120		365,687
2024	1,218		334,497
2025	304		331,136
Thereafter	—		2,645,508
Total	$	4,378	$	4,401,752