Loss per Share (Details) (USD $)	3 Months Ended		23 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012
Loss per Share
Net loss attributable to Prospect Global Resources Inc.	$ (3,320,723)	$ (1,585,103)	$ (83,031,569)	$ (83,031,569)
Weighted average number of common shares outstanding - basic	39,489,173	21,615,897		25,235,348
Loss per share of common stock:
Basic and fully diluted loss per share of common stock (in dollars per share)	$ (0.08)	$ (0.07)	$ (3.29)	$ (3.29)
Antidilutive potentially dilutive warrants, grants and options which were not included in the computation of Loss Per Share (in dollars per share)	22,814,729