Nature of Operations (Details)				3 Months Ended		12 Months Ended
	Apr. 26, 2016 USD ($) $ / shares shares	Mar. 31, 2016 USD ($) drilling_rig	Dec. 31, 2015 $ / bbl	Mar. 31, 2016 USD ($) drilling_rig $ / bbl	Sep. 30, 2014 $ / bbl	Dec. 31, 2015	Apr. 14, 2016 USD ($)	Oct. 20, 2015 USD ($)	Nov. 30, 2014 USD ($)
Property, Plant and Equipment [Line Items]
Price per barrel | $ / bbl			37.13	26.19	106.06
Published rig count, decrease (more than) (as a percent)				70.00%
Drilling rigs, utilization (as a percent)						86.00%
Line of credit | Revolving credit facility
Property, Plant and Equipment [Line Items]
Increase to borrowing base		$ 6,300,000
Borrowing base		$ 86,400,000		$ 86,400,000
Line of credit | Revolving credit facility | CIT Finance, LLC syndicate
Property, Plant and Equipment [Line Items]
Revolving credit facility, maximum borrowing capacity								$ 125,000,000.0	$ 155,000,000.0
Subsequent Event
Property, Plant and Equipment [Line Items]
Proceeds from offering	$ 43,000,000
Subsequent Event | IPO
Property, Plant and Equipment [Line Items]
Shares issued (in shares) | shares	13,225,000
Price per share (in dollars per share) | $ / shares	$ 3.50
Subsequent Event | Line of credit | Revolving credit facility | CIT Finance, LLC syndicate
Property, Plant and Equipment [Line Items]
Revolving credit facility, maximum borrowing capacity							$ 85,000,000.0
Accordion feature | Line of credit | Revolving credit facility | CIT Finance, LLC syndicate
Property, Plant and Equipment [Line Items]
Revolving credit facility, maximum borrowing capacity									$ 25,000,000.0
Accordion feature | Subsequent Event | Line of credit | Revolving credit facility | CIT Finance, LLC syndicate
Property, Plant and Equipment [Line Items]
Revolving credit facility, maximum borrowing capacity							$ 25,000,000.0
Operating rig
Property, Plant and Equipment [Line Items]
Number of rigs | drilling_rig		14		14
Omni-directional walking system
Property, Plant and Equipment [Line Items]
Number of rigs | drilling_rig		13		13
Bi-fuel capabilities
Property, Plant and Equipment [Line Items]
Number of rigs | drilling_rig		12		12