XML 96 R113.htm IDEA: XBRL DOCUMENT v2.4.0.8

Loans - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012 VIEs [Member]	Dec. 31, 2013 VIEs [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Minimum [Member] VIEs [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Maximum [Member] VIEs [Member]
Financing Receivable, Impaired [Line Items]
Loans at Carrying Amount	$ 6,238	$ 9,203	$ 209,807
Interest rates on loans	4.62%				4.67%	5.33%	7.00%	5.42%
Loans outstanding maturity date			2047
Loan impairments	$ 0	$ 0	$ 0	$ 0
Loans outstanding maturity date	2026-06				2013-12		2026-06

X

- Definition

Interest Rate On Term Loan

+ References

No definition available.

+ Details

Name:	ambc_InterestRateOnTermLoan
Namespace Prefix:	ambc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Loan Maturity date

+ References

No definition available.

+ Details

Name:	ambc_LoanMaturityDate
Namespace Prefix:	ambc_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maturity Year Of Long Term Debt

+ References

No definition available.

+ Details

Name:	ambc_MaturityYearOfLongTermDebt
Namespace Prefix:	ambc_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

+ Details

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

X

- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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