6. Debt (Details - Debt outstanding) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Warehouse lines of credit	$ 134,791	$ 136,847
Residual interest financing	39,478	39,106
Subordinated renewable notes	17,534	17,290
Total debt outstanding	194,317	195,373
Warehouse Lines Of Credit [Member]
Warehouse lines of credit	$ 40,558	38,198
Interest rate	5.50% over one month Libor (Minimum 6.50%)
Maturity date	Feb-21
Warehouse Lines Of Credit (2) [Member]
Warehouse lines of credit	$ 96,225	99,885
Interest rate	3.00% over one month Libor (Minimum 3.75%)
Maturity date	Sep-20
Warehouse Lines Of Credit (3) [Member]
Warehouse lines of credit	$ 0	0
Interest rate	4.00% over a commercial paper rate (Minimum 5.00%)
Maturity date	Dec-21
ResidualInterestFinancing [Member]
Residual interest financing	$ 40,000	40,000
Interest rate	8.60%
Maturity date	Jan-26
Subordinated Renewable Notes [Member]
Subordinated renewable notes	$ 17,534	$ 17,290
Interest rate	Weighted average rate of 9.75% and 8.53% at December 31, 2019 and December 31, 2018, respectively
Maturity date	Weighted average maturity of April 2022 and January 2021 at December 31, 2019 and December 31, 2018, respectively

Residual interest financing.

No definition available.

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Namespace Prefix:	cpss_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Period Type:	duration

- Definition

Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

+ References

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of the outstanding short-term borrowings under a revolving line of credit used by mortgage bankers to finance the origination or purchase of loans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Period Type:	instant

- Details

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- Details

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