REVENUE FROM SERVICES (Tables)

9 Months Ended

Sep. 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 nine months ended September 30:

	2020			2019
Balance at beginning of year	$	14,966		$	3,746
Fulfillment costs incurred		9,256			10,561
Amortization of fulfillment costs		(23,879	)		(8,947	)
Balance at end of period	$	343		$	5,360

Schedule of Change in Deferred Revenue

Changes in our deferred revenue are as follows for the nine months ended September 30:

	2020			2019
Balance at beginning of year	$	8,724		$	4,357
Cash received, excluding amounts recognized as revenue from services		12,959			13,674
Amounts recognized as revenue from services		(21,050	)		(12,599	)
Balance at end of period	$	633		$	5,432

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 September 30:
North America	$	2,163	$	—	$	2,163	$	20,481	$	—	$	20,481
South America		—		—		—		2,160		—		2,160
Asia Pacific		—		8		8		301		332		633
Total	$	2,163	$	8	$	2,171	$	22,942	$	332	$	23,274
Nine Months Ended September 30:
North America	$	122,637	$	—	$	122,637	$	109,910	$	—	$	109,910
South America		1,415		7,807		9,222		2,911		—		2,911
Asia Pacific		182		24,973		25,155		2,262		90,783		93,045
West Africa		—		6,356		6,356		—		—		—
Total	$	124,234	$	39,136	$	163,370	$	115,083	$	90,783	$	205,866