REVENUE FROM SERVICES (Tables)

6 Months Ended

Jun. 30, 2019

Revenue From Contract With Customer [Abstract]

Schedule of Changes in Deferred Costs on Contracts

Changes in our deferred costs on contracts are as follows for the six months ended June 30:

	2019			2018
				(Restated)
Balance at beginning of year	$	3,746		$	1,780
Fulfillment costs incurred		5,821			5,039
Amortization of fulfillment costs		(7,717	)		(6,330	)
Balance at end of period	$	1,850		$	489

Schedule of Change in Deferred Revenue

Changes in our deferred revenue are as follows for the six months ended June 30:

	2019			2018
				(Restated)
Balance at beginning of year	$	4,357		$	1,477
Cash received, excluding amounts recognized as revenue from services		8,181			385
Amounts recognized as revenue from services		(8,098	)		(1,862	)
Balance at end of period	$	4,440		$	—

Schedule of Revenue by Major Source

The following table disaggregates our revenue by major source:

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
			(Restated)				(Restated)
North America	$	28,875	$	4,760	$	89,428	$	32,439
South America		702		12,123		752		21,567
Asia Pacific (1)		59,960		—		92,412		—
Total	$	89,537	$	16,883	$	182,592	$	54,006

⁽¹⁾ Includes $58.5 million and $90.5 million from our marine operations in the three months and six months ended June 30, 2019, respectively.