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- Definition

Significant Accounting Policies [Line Items]

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- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost.

+ References

No definition available.

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Organization and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 15, 2016
Significant Accounting Policies [Line Items]
Deferred Finance Costs, Noncurrent, Net	$ 1,897,000	$ 2,023,000		$ 2,040,000
Depreciation expense	3,600,000	129,500,000	$ 176,100,000
Deposits	$ 1,246,000	$ 8,292,000
Goodwill impairment			$ (561,000,000)
Salvage value as a percentage of operational asset's acquisition cost	10.00%
Customer Concentration Risk \| Sales Revenue, Net [Member] \| Chevron Texaco Exploration and Production [Member]
Significant Accounting Policies [Line Items]
Concentration of risk percentage	12.00%	14.00%	15.00%
Customer Concentration Risk \| Sales Revenue, Net [Member] \| OXY USA Inc. [Member]
Significant Accounting Policies [Line Items]
Concentration of risk percentage		13.00%
Customer Concentration Risk \| Accounts Receivable \| OXY USA Inc. [Member]
Significant Accounting Policies [Line Items]
Concentration of risk percentage		11.00%
Maximum
Significant Accounting Policies [Line Items]
Cash in bank deposit and brokerage accounts guaranteed by FDIC	$ 250,000
Capitalized internal-use software, useful life	7 years
Minimum
Significant Accounting Policies [Line Items]
Accounts reviewed for collectability, days past due from invoice date	150 days
Capitalized internal-use software, useful life	5 years