STOCK-BASED COMPENSATION - Activity Summary (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Aug. 18, 2016	Aug. 17, 2016
STOCK-BASED COMPENSATION
Options granted to employees, directors and consultants		2,400,000
Exercise price (in dollars per share)		$ 1.16
Number of Shares
Outstanding Number of Options, Beginning balance (in shares)	4,675,000	2,275,000
Options Granted (in shares)		2,400,000
Outstanding Number of Options, Ending balance (in shares)	4,675,000	4,675,000	2,275,000
Exercisable, End of period (in shares)	3,660,000	3,010,000	2,200,000
Weighted Average Exercise Price
Outstanding, Beginning, Weighted-Average Exercise Price (in dollars per share)	$ 0.76	$ 0.33
Options Granted (in dollars per share)		1.16
Outstanding, Ending, Weighted-Average Exercise Price (in dollars per share)	0.76	0.76	$ 0.33
Exercisable Weighted Average Exercise Price (in dollars per share)	$ 0.61	$ 0.54	$ 0.30
Remaining Contractual Term (Years)
Contractual Life of Outstanding Options	5 years 1 month 24 days	5 years 4 months 21 days	6 years 6 months
Contractual Life of Outstanding Options, Granted		5 years 4 months 2 days
Exercisable Average Remaining Contractual Life in Years	5 years 1 month 10 days	5 years 11 months 19 days	6 years 8 months 19 days
Amended and Restated PetroShare Corp. Equity Incentive Plan | Stock Compensation Plan
STOCK-BASED COMPENSATION
Shares reserved for issuance				10,000,000
PetroShare Corp. Equity Incentive Plan | Stock Compensation Plan
STOCK-BASED COMPENSATION
Shares reserved for issuance					5,000,000