v2.3.0.15

COMPANY BACKGROUND (Details)	9 Months Ended
	Sep. 30, 2011 facility quarter Y segment
Company Background
Number of potash production facilities owned	5
Number of reporting segments	1
New Mexico
Company Background
Number of potash production facilities owned	3
Number of productive underground mines	2
Utah
Company Background
Number of potash production facilities owned	2

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ Details

Name:	ipi_NatureOfBusinessLineItems
Namespace Prefix:	ipi
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of potash producing facilities owned by the entity.

+ Details

Name:	ipi_NumberOfPotashProductionFacilitiesOwned
Namespace Prefix:	ipi
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of underground mines where production takes place.

+ Details

Name:	ipi_NumberOfUndergroundMines
Namespace Prefix:	ipi
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of reportable segments of the entity.

+ Details

Name:	ipi_ReportingSegmentsNumber
Namespace Prefix:	ipi
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration