v3.8.0.1

COMPANY BACKGROUND (Narrative) (Details)	9 Months Ended
	Sep. 30, 2017 Facility
By product credits	8.00%
Number of mining facilities	3

X

- Definition

By Product Credits Percentage of Cost of Goods Sold

+ References

No definition available.

+ Details

Name:	ipi_ByProductCreditsPercentageofCostofGoodsSold
Namespace Prefix:	ipi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number Of Mining Facilities

+ References

No definition available.

+ Details

Name:	ipi_NumberOfMiningFacilities
Namespace Prefix:	ipi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration