Name:	chmi_ReceivablesAndOtherAssets
Namespace Prefix:	chmi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	chmi_ReceivablesAndOtherAssetsAbstract
Namespace Prefix:	chmi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of repurchased value of loans or securitized loans that are held with the intention to sell in the near future.

No definition available.

Name:	chmi_RepurchasedLoansHeldForSale
Namespace Prefix:	chmi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Refers to the amount of servicing advances receivables from client or customers that are to be treated as receivables.

No definition available.

Name:	chmi_ServicingAdvances
Namespace Prefix:	chmi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.

No definition available.

Name:	us-gaap_AccountsAndOtherReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682