2. Revenue

Total revenue under contracts recognized under Topic 606 was $261.3 million for the year ended December 31, 2019, while $59.8 million was specialty rental income subject to the guidance of ASC 840 for the year ended December 31, 2019.

The following table disaggregates our revenue by our three reportable segments as well as the All Other category: Permian Basin, Bakken Basin, Government, and All Other for the years indicated below:


	For the Years ended December 31,
	2019		2018		2017
Permian Basin
Services income	$	193,852	$	107,997	$	32,578
Construction fee income		2,705		-		-
Total Permian Basin revenues		196,557		107,997		32,578

Bakken Basin
Services income	$	20,621	$	25,813	$	22,351
Total Bakken Basin revenues		20,621		25,813		22,351

Government
Services income	$	25,071	$	25,536	$	16,770
Total Government revenues		25,071		25,536		16,770

All Other
Services income	$	3,273	$	4,310	$	1,799
Construction fee income		15,748		23,209		1,924
Total All Other revenues		19,021		27,519		3,723

Total revenues	$	261,270	$	186,865	$	75,422

Contract Assets and Liabilities

We do not have any contract assets and we did not recognize any impairments of any contract assets or liabilities.

Contract liabilities under Topic 606 primarily consist of deferred revenue that represent room nights that the customer has not used and may use in the future.


	Years Ended December 31,
	2019		2018		2017
Balances at Beginning of Year	$	37,376	$	57,747	$	73,035
Additions to deferred revenue		8,652		4,092		1,839
Revenue recognized		(19,829)		(24,463)		(17,127)
Balances at End of Year	$	26,199	$	37,376	$	57,747

As of December 31, 2019, for contracts greater than one year, the following table discloses the estimated revenues related to performance obligations that are unsatisfied (or partially unsatisfied) and when we expect to recognize the revenue, and only represents revenue expected to be recognized from contracts where the price and quantity of the product or service are fixed (in thousands):


		For the Years ended December 31,
	2020		2021		2022		Thereafter		Total
Revenue expected to be recognized as of December 31, 2019	$	32,335	$	23,413	$	2,999	$	-	$	58,747

The Company applied some of the practical expedients in Topic 606 and does not disclose consideration for remaining performance obligations with an original expected duration of one year or less or for variable consideration related to unsatisfied (or partially unsatisfied) performance obligations. Due to the application of these practical expedients, the table above represents only a portion of the Company’s expected future consolidated revenues and it is not necessarily indicative of the expected trend in total revenues.