Represents the income recognized during the period arising from equity-based compensation arrangements.

No definition available.

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- Definition

Represents the excess income recognized during the period arising from equity-based compensation arrangements.

+ References

No definition available.

+ Details

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- Definition

Reflects the amendment to the limited partnership agreement interests in the reporting period.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Reflects the annual revenues of the partnership agreement in the reporting period.

+ References

No definition available.

+ Details

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- Definition

General partner contributed revenue to asset manager in the period for performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds.

+ References

No definition available.

+ Details

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- Details

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- Definition

This element represent management services agreement term.

+ References

No definition available.

+ Details

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- Definition

Reflects the minimum base of annual compensation during the reporting period.

+ References

No definition available.

+ Details

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- Definition

Reflects the minimum future amendment to the limited partnership agreement interests in the reporting period.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of Partners Capital, Additional Partnership Percent.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

This element represent partners capital tendered percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	intg_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the redemption of restricted cash.

+ References

No definition available.

+ Details

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

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- Definition

The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

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- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

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- Definition

Amount of expenses related to the managing member or general partner for management of the day-to-day business functions of the limited liability company (LLC) or limited partnership (LP).

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

Changes in the ownership interest during the period of each class of partners. Partners include general, limited and preferred partners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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-SubTopic 10

-Section S99

-Paragraph 5

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- Definition

Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners.

+ References

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- Definition

The amount of cash paid during the current period for taxes other than income taxes.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

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- Definition

The cash outflow for incremental, external costs directly pertaining to an early extinguishment of debt, including legal costs and prepayment penalties, and excluding interest and repayment of debt principal.

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No definition available.

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- Definition

The cash inflow from the capital received in cash from a partner in a partnership during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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Amount expected to be recognized in earnings for the specified restructuring cost.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

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-Publisher SEC

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Amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.

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-Publisher FASB

-Name Accounting Standards Codification

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JUSTICE INVESTORS (Details Textual) (USD $)	0 Months Ended	12 Months Ended		12 Months Ended
JUSTICE INVESTORS (Details Textual) (USD $)	Dec. 01, 2008	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2014 Altenative Redemption Structure [Member]	Jun. 30, 2014 General Partner [Member]	Dec. 01, 2008 Evon [Member]	Jun. 30, 2014 Portsmouth [Member]	Dec. 01, 2008 Portsmouth [Member]
Justice Investors [Line Items]
Amendment To Limited Partnership Agreement Interests	98.00%
Minimum Future Amendment To Limited Partnership Agreement Interests	75.00%
Annual Revenues Of Partnership Percentage	1.50%
General Partner Contribution To Asset Managers	$ 75,000
Minimum Annual Compensation	285,000
Allocated Compensation Percentage						20.00%		80.00%
Allocated Excess Compensation Percentage	50.00%
Business Acquisition, Percentage of Voting Interests Acquired			50.00%		93.00%
Noncontrolling Interest, Ownership Percentage by Parent					29.173%		12.90%
Partners' Capital Account, Redemptions				1,385,000	1,385,000
Partners Capital Tendered Percentage				1.00%	1.00%
Partners Capital Additional Partnership Percent					17.146%
Proceeds from Partnership Contribution				2,928,000
Restricted Cash Redemption		0	16,163,000	16,163,000
Restructuring and Related Cost, Expected Cost				6,681,000
Management Fee Expense				1,550,000
Legal Fees		365,000		431,000
Payments for Other Taxes				4,700,000
Extinguishment of Debt, Gain (Loss), Net of Tax					3,910,000
Payments of Debt Extinguishment Costs					3,808,000
Short-term Debt, Refinanced, Amount					102,000
Management Services Agreement Term					3 years
Increase (Decrease) in Partners' Capital					$ 64,100,000