Debt - Long Term Debt, Net (Details) - USD ($)	Sep. 01, 2017	Feb. 28, 2018
Subsequent Event
Debt Instrument [Line Items]
Minimum Market Capitalization covenant, amount		$ 300,000,000
Minimum Market Capitalization covenant, percentage of outstanding principle amount of loan		200.00%
CRG Servicing LLC \| Secured Debt \| Line of Credit \| Term Loan
Debt Instrument [Line Items]
Maximum borrowing capacity (up to)	$ 300,000,000
Proceeds from line of credit	100,000,000
Remaining borrowing capacity	$ 100,000,000
Interest rate per annum	9.50%
Covenant, perfected interest, percentage of capital stock of subsidiaries	65.00%
Covenant, prepayment premium, percentage of principal amount	40.00%
CRG Servicing LLC \| Secured Debt \| Line of Credit \| Term Loan \| Subsequent Event
Debt Instrument [Line Items]
Maximum borrowing capacity (up to)		$ 200,000,000
CRG Servicing LLC \| Secured Debt \| Line of Credit \| Term Loan \| Subsequent Event \| Tranche One
Debt Instrument [Line Items]
Remaining borrowing capacity		25,000,000
CRG Servicing LLC \| Secured Debt \| Line of Credit \| Term Loan \| Subsequent Event \| Tranche Two
Debt Instrument [Line Items]
Remaining borrowing capacity		25,000,000
CRG Servicing LLC \| Secured Debt \| Line of Credit \| Term Loan \| Subsequent Event \| Tranche Three
Debt Instrument [Line Items]
Remaining borrowing capacity		$ 50,000,000

Line Of Credit Facility, Covenant, Perfected Interest, Percentage Of Capital Stock Of Subsidiaries

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- Definition

Line Of Credit Facility, Covenant, Prepayment Premium, Percentage Of Principal Amount

+ References

No definition available.

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- Definition

Line Of Credit Facility, Minimum Market Capitalization Covenant, Amount

+ References

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- Definition

Line Of Credit Facility, Minimum Market Capitalization Covenant, Percentage Of Outstanding Principle Amount Of Loan

+ References

No definition available.

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- 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.

+ References

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- Definition

The effective interest rate at the end of the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585

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