Nature of Operations (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2017	Jun. 30, 2019	Dec. 31, 2018	Aug. 10, 2017
Proposed Merger Disclosures [Line Items]
Common stock, par value (in dollars per share)				$ 0.01
Preferred Stock, Par or Stated Value Per Share			$ 0.01	$ 0.01
Carrizo [Member]
Proposed Merger Disclosures [Line Items]
Common stock, par value (in dollars per share)			$ 0.01
Preferred Stock, Dividend Rate, Percentage		8.875%
Preferred Stock, Par or Stated Value Per Share					$ 0.01
Subsequent Event [Member] | Callon [Member]
Proposed Merger Disclosures [Line Items]
Common stock, par value (in dollars per share)	$ 0.01
Merger Common Stock Conversion Rate	2.05
Preferred Stock, Dividend Rate, Percentage	8.875%
Preferred Stock, Par or Stated Value Per Share	$ 0.01
Merger Preferred Stock Conversion Rate	1
Scenario, Forecast [Member] | Carrizo [Member]
Proposed Merger Disclosures [Line Items]
Loss on Contract Termination	$ 47.4
Expense Reimbursement Upon Contract Termination	7.5
Scenario, Forecast [Member] | Callon [Member]
Proposed Merger Disclosures [Line Items]
Loss on Contract Termination	57.0
Expense Reimbursement Upon Contract Termination	$ 7.5