STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	Common Stock	Preferred Stock	Additional Paid-in Capital	Retained Earnings (Deficit)
Balance (in shares) at Dec. 31, 2016		63,259,781
Balance at Dec. 31, 2016	$ (487,422)	$ 63		$ 443,895	$ (931,380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock (in shares)		3,911,355
Issuance of Common Stock	2,821	$ 4		2,817
Restricted Stock Forfeitures (in shares)		(108,993)
Restricted Stock Forfeitures	(24)	$ 0		(24)
Share Based Compensation	3,646			3,646
Restricted Stock Surrenders - Tax Obligations (in shares)		(270,510)
Restricted Stock Surrenders - Tax Obligations	(668)	$ 0		(668)
Net Income (Loss)	(9,194)				(9,194)
Balance (in shares) at Dec. 31, 2017		66,791,633
Balance at Dec. 31, 2017	(490,841)	$ 67		449,666	(940,574)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock (in shares)		3,295,302
Issuance of Common Stock	3	$ 3
Restricted Stock Forfeitures (in shares)		(910,086)
Restricted Stock Forfeitures	(1)	$ (1)
Share Based Compensation	4,362			4,362
Restricted Stock Surrenders - Tax Obligations (in shares)		(266,683)
Restricted Stock Surrenders - Tax Obligations	(680)	$ 0		(680)
Equity Offerings, Net of Issuance Costs (in shares)		96,926,019
Equity Offerings, Net of Issuance Costs	141,674	$ 97		141,577
Debt Exchange Agreements (in shares)		136,063,799
Debt Exchange Agreements	327,499	$ 136		327,363
Acquisition of Oil and Natural Gas Properties (in shares)		83,730,539
Acquisition of Oil and Natural Gas Properties	326,353	$ 84		326,270
Net Exercise of Stock Options (in shares)		62,500
Net Exercise of Stock Options		$ 0		0
Repurchases of Common Stock (in shares)		(7,359,953)
Repurchases of Common Stock	(22,195)	$ (7)		(22,188)
Net Income (Loss)	143,689				143,689
Balance (in shares) at Dec. 31, 2018		378,333,070	0
Balance at Dec. 31, 2018	429,865	$ 378	$ 0	1,226,371	(796,884)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Common Stock (in shares)		4,069,200
Issuance of Common Stock	4	$ 4
Restricted Stock Forfeitures (in shares)		(1,013,135)
Restricted Stock Forfeitures	(1)	$ (1)
Share Based Compensation	8,364			8,364
Restricted Stock Surrenders - Tax Obligations (in shares)		(271,847)
Restricted Stock Surrenders - Tax Obligations	(660)	$ 0		(660)
Equity Offerings, Net of Issuance Costs (in shares)			1,500,000
Equity Offerings, Net of Issuance Costs	145,868		$ 2	145,867
Debt Exchange Agreements (in shares)		7,242,384
Debt Exchange Agreements	15,749	$ 7		15,742
Acquisition of Oil and Natural Gas Properties (in shares)		5,602,147
Acquisition of Oil and Natural Gas Properties	11,708	$ 6		11,703
Contingent Consideration Settlements (in shares)		17,758,367
Contingent Consideration Settlements	39,171	$ 18		39,154
Repurchases of Common Stock (in shares)		(5,635,003)
Repurchases of Common Stock	(15,108)	$ (6)		(15,102)
Net Income (Loss)	(76,318)	$ 0			(76,318)
Balance (in shares) at Dec. 31, 2019		406,085,183	1,500,000
Balance at Dec. 31, 2019	$ 558,643	$ 406	$ 2	$ 1,431,438	$ (873,203)