Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Cash and Cash Equivalents [Table Text Block]

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



	December 31,
	2018		2017
Cash and cash equivalents	$	38,560	$	58
Restricted cash included in other assets	16,389		15,934
Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows	$	54,949	$	15,992

Schedule of Finite-Lived Intangible Assets

The following table summarizes the carrying value of our intangible assets as of December 31, 2018 and 2017:



	December 31,
In thousands	2018			2017
Intangible asset value	$	37,848		$	37,848
Accumulated amortization	(13,074		)	(10,645		)
Net book value	$	24,774		$	27,203

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

As of December 31, 2018, our estimated amortization expense for our intangible assets subject to amortization over the next five years is as follows:



In thousands
2019	$	2,430
2020	2,430
2021	2,430
2022	2,430
2023	2,430

Schedule of Earnings Per Share, Basic and Diluted Reconciliation

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



	Year Ended December 31,
In thousands	2018		2017		2016
Numerator
Net income (loss) – basic	$	322,698	$	163,152	$	(976,177	)
Effect of potentially dilutive securities
Interest on convertible senior notes	539		49		—
Net income (loss) – diluted	$	323,237	$	163,201	$	(976,177	)

Denominator
Weighted average common shares outstanding – basic	432,483		390,928		373,859
Effect of potentially dilutive securities
Restricted stock, SARs and performance-based equity awards	6,500		2,242		—
Convertible senior notes	17,186		2,751		—
Weighted average common shares outstanding – diluted	456,169		395,921		373,859

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following securities could potentially dilute earnings per share in the future, but were excluded from the computation of diluted net income (loss) per share, as their effect would have been antidilutive:



	Year Ended December 31,
In thousands	2018	2017	2016
SARs	2,743	4,512	6,427
Restricted stock and performance-based equity awards	1,234	5,645	5,816