REVENUE FROM SERVICES (Tables)

6 Months Ended

Jun. 30, 2020

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:

	2020			2019
Balance at beginning of year	$	14,966		$	3,746
Fulfillment costs incurred		9,149			5,821
Amortization of fulfillment costs		(23,723	)		(7,717	)
Balance at end of period	$	392		$	1,850

Schedule of Change in Deferred Revenue

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

	2020			2019
Balance at beginning of year	$	8,724		$	4,357
Cash received, excluding amounts recognized as revenue from services		12,889			8,181
Amounts recognized as revenue from services		(21,050	)		(8,098	)
Balance at end of period	$	563		$	4,440

Schedule of Revenue by Major Source

The following table disaggregates our revenue by major source:

	2020						2019
	Land		Marine		Total		Land		Marine		Total
Three Months Ended June 30:
North America	$	29,326	$	—	$	29,326	$	28,875	$	—	$	28,875
South America		12		—		12		702		—		702
Asia Pacific		73		1		74		1,424		58,536		59,960
West Africa		—		6,402		6,402		—		—		—
Total	$	29,411	$	6,403	$	35,814	$	31,001	$	58,536	$	89,537
Six Months Ended June 30:
North America	$	120,474	$	—	$	120,474	$	89,428	$	—	$	89,428
South America		1,415		7,843		9,258		752		—		752
Asia Pacific		182		24,883		25,065		1,961		90,451		92,412
West Africa		—		6,402		6,402		—		—		—
Total	$	122,071	$	39,128	$	161,199	$	92,141	$	90,451	$	182,592