Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash as reported within the Unaudited Condensed Consolidated Balance Sheets to “Cash, cash equivalents, and restricted cash at end of period” as reported within the Unaudited Condensed Consolidated Statements of Cash Flows:

In thousands	March 31, 2023		March 31, 2022
Cash and cash equivalents	$	525	$	517
Restricted cash for future asset retirement obligations	47,424		46,695
Total cash, cash equivalents, and restricted cash shown in the Unaudited Condensed Consolidated Statements of Cash Flows	$	47,949	$	47,212

Schedule of Restricted Cash and Cash Equivalents

The following table provides a reconciliation of cash, cash equivalents, and restricted cash as reported within the Unaudited Condensed Consolidated Balance Sheets to “Cash, cash equivalents, and restricted cash at end of period” as reported within the Unaudited Condensed Consolidated Statements of Cash Flows:

In thousands	March 31, 2023		March 31, 2022
Cash and cash equivalents	$	525	$	517
Restricted cash for future asset retirement obligations	47,424		46,695
Total cash, cash equivalents, and restricted cash shown in the Unaudited Condensed Consolidated Statements of Cash Flows	$	47,949	$	47,212

Schedule of Net Loss Per Share, Basic and Diluted

The following table sets forth the weighted average shares used for purposes of calculating basic and diluted net income (loss) per common share for the periods indicated:

	Three Months Ended
	March 31,
In thousands	2023	2022
Weighted average common shares outstanding – basic	51,503	51,602
Effect of potentially dilutive securities
Restricted stock, restricted stock units and performance stock units	360	—
Warrants	1,899	—
Employee Stock Purchase Program	1	—
Weighted average common shares outstanding – diluted	53,763	51,602

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following outstanding securities were excluded from the computation of diluted net income (loss) per share for the three months ended March 31, 2023 and March 31, 2022, as their effect would have been antidilutive, as of the respective dates:

	March 31,
In thousands	2023	2022
Restricted stock, restricted stock units and performance stock units	490	1,005
Warrants	—	5,162