Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
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-Section 50
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Name:	us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

CONTINGENCIES (Details) $ in Thousands	12 Months Ended
CONTINGENCIES (Details) $ in Thousands	Sep. 30, 2019 well customer	Dec. 31, 2019 USD ($)
Failure of Hole Opener \| Minimum
Loss Contingencies
Estimate of possible loss		$ 1,400
Failure of Hole Opener \| Maximum
Loss Contingencies
Estimate of possible loss		1,600
Unfavorable Regulatory Action \| Minimum
Loss Contingencies
Estimate of possible loss		2,000
Unfavorable Regulatory Action \| Maximum
Loss Contingencies
Estimate of possible loss		$ 3,000
Contract drilling
Loss Contingencies
Number of wells not meeting specifications for plumbness \| well	2
Number of customers with wells not meeting specifications for plumbness \| customer	1