Securities (Details 3) (Mortgage-backed securities)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Lower Range
Prepayment rate	0.50%	9.00%
Loss severity	26.17%	2.00%
Cumulative default rate	0.00%	0.51%
Principal write-down	0.00%	0.00%
Upper Range
Prepayment rate	74.40%	58.00%
Loss severity	75.55%	140.00%
Cumulative default rate	35.07%	9.16%
Principal write-down	2.68%	0.81%

Loss, including interest and principal, incurred on a write-down of a security, expressed as a percentage of the original principal balance, used as an input to measure fair value.

No definition available.

+ Details

Name:	ophc_FairValueInputsPrincipalWriteDown
Namespace Prefix:	ophc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Loss, including interest and principal, incurred on a defaulted security, expressed as a percentage of the original principal balance, used as an input to measure fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueInputsLossSeverity
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value.

+ References

+ Details

Name:	us-gaap_FairValueInputsPrepaymentRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value.

+ References

+ Details

Name:	us-gaap_FairValueInputsProbabilityOfDefault
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration