Capital Expenditure Estimate

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Change In Revenue

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Crude Oil Price

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Increase (Decrease) In Crude Oil Price

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Loss Contingency, Decrease In Board Of Director Fees

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Loss Contingency, Decrease In Expense From Scaling Down Operations

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Loss Contingency, Executive Base Salary Reduction

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Loss Contingency, Plan To Decrease Expense, Remainder Of Fiscal Year

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Proceeds From Government Assistance Programs

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Rent Relief

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Total Liquidity Level

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Summary of Significant Accounting Policies (Details) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended	12 Months Ended
	May 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Variable Interest Entity
Decrease in Brent crude oil prices (percent)					66.00%
Crude oil price					$ 23			$ 41	$ 66
Change in revenue				77.00%
Plan to decrease costs due to Covid 19				$ 18,000,000.0		$ 18,000,000.0
Decreases in expenses			$ 20,000,000.0
Executive salary reduction		20.00%
Decrease in board of director fees		20.00%
Proceeds from government assistance programs						7,000,000.0
Rent relief	$ 4,000,000.0
Total liquidity				59,400,000		59,400,000				$ 65,500,000
Cash and cash equivalents				51,056,000		51,056,000			33,065,000	$ 27,894,000
Revolving credit facility \| Second Lien Notes
Variable Interest Entity
Long-term debt				121,000,000		121,000,000
Revolving credit facility \| PNC Bank, national association (PNC) \| Line of credit
Variable Interest Entity
Outstanding amount of certain indebtedness				22,500,000		22,500,000
Remaining borrowing amount				8,300,000		8,300,000
Forecast \| INOVA Geophysical
Variable Interest Entity
Equity method investment ownership interest							49.00%
Sale of INOVA Geophysical							$ 12,000,000.0
Minimum
Variable Interest Entity
Forecasted capital expenditure				25,000,000.0		25,000,000.0			35,000,000.0
Maximum
Variable Interest Entity
Forecasted capital expenditure				$ 35,000,000.0		$ 35,000,000.0			$ 50,000,000.0