Revenue and Customers (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Contract with Customer, Asset and Liability

The following table provides information about contract assets and contract liabilities from contracts with customers:

	December 31, 2019			December 31, 2018
Current contract assets	$	21,292		$	25,298
Noncurrent contract assets	9,508			22,366
Total contract assets	30,800			47,664
Current contract liabilities (deferred revenue)	(34,196		)	(32,906		)
Noncurrent contract liabilities (deferred revenue)	(30,859		)	(47,847		)
Total contract liabilities	$	(65,055	)	$	(80,753	)

Significant changes in the remaining performance obligation contract assets and the contract liabilities balances for the years ended December 31, 2019 and 2018 are as follows:

	Contract Assets			Contract Liabilities
Net balance at December 31, 2017	$	55,749		$	(108,861	)
Amortization of deferred costs	(32,420		)	—
Additions to deferred costs	24,335			—
Amortization of deferred revenue	—			47,798
Additions to deferred revenue	—			(19,690		)
Total	(8,085		)	28,108
Net balance at December 31, 2018	$	47,664		$	(80,753	)
Amortization of deferred costs	(39,936		)	—
Additions to deferred costs	23,072			—
Amortization of deferred revenue	—			65,312
Additions to deferred revenue	—			(49,614		)
Total	(16,864		)	15,698
Net balance at December 31, 2019	$	30,800		$	(65,055	)

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The following table reflects revenue expected to be recognized in the future related to unsatisfied performance obligations, by rig type, at the end of the reporting period:

	Year Ending December 31,
	2020		2021		2022		2023		2024 and beyond		Total
Floaters	$	17,252	$	10,584	$	7,798	$	3,548	$	—	$	39,182
Jackups	16,912		7,230		1,732		—		—		25,874
Total	$	34,164	$	17,814	$	9,530	$	3,548	$	—	$	65,056

Disaggregation of revenue by rig types

The following table provides information about contract drilling revenue by rig types:

	Twelve Months Ended December 31, 2019		Twelve Months Ended December 31, 2018
Floaters (1)	$	727,177	$	561,825
Jackups	518,881		474,257
Total (1)	$	1,246,058	$	1,036,082

⁽¹⁾ Includes the impact of the Noble Bully II contract buyout during the year ended December 31, 2019. Exclusive of this item, revenue for the year ended December 31, 2019 would have been $560,319 for floaters and $1,079,200 for total rigs.