Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Reconciliation of Components of Basic and Diluted Net Income Per Common Share

The following table provides a reconciliation of components of basic and diluted net income per common share:

	For the Three Months Ended					For the Six Months Ended
	June 30,					June 30,
	2019		2018			2019		2018
	(Share amounts in 000's)
Net income (loss)	$	57,105	$	(20,555	)	$	97,780	$	26,933
Weighted average common shares outstanding - basic		197,514		197,054			197,449		196,803
Effect of dilutive instruments		555		—			640		—
Weighted average common shares outstanding - diluted		198,069		197,054			198,089		196,803
Net income (loss) per common share - basic	$	0.29	$	(0.10	)	$	0.50	$	0.14
Net income (loss) per common share - fully diluted	$	0.29	$	(0.10	)	$	0.49	$	0.14
Number of contingently issuable shares, including warrants, that are not included in the diluted earnings per share denominator as the performance or market criteria have not been met		20,218		2,636			20,109		2,636