Basis of Presentation and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Reorganization Costs [Table Text Block]

Reorganization items:

Professional advisory fees and other costs directly associated with our reorganization are reported separately as reorganization items pursuant to the Reorganizations Topic of the ASC. Reorganization items also include adjustments to reflect the carrying value of certain pre-petition liabilities at their allowable claim amounts, gain on the settlement of liabilities subject to compromise and fresh start reporting adjustments. The reorganization items in the Consolidated Statements of Total Comprehensive Income (Loss) consisted of the following items:

	Successor Ambac				Predecessor Ambac
			Period from May 1		Period from January 1
	Year Ended		through		through			Year Ended
	December 31, 2014		December 31, 2013		April 30, 2013			December 31, 2012
U.S. Trustee fees	$	7	$	33	$	23		$	50
Professional fees	204		460		4,483			7,165
Gain from cancellation and satisfaction of Predecessor Ambac debt	—		—		(1,521,435		)	—
Fresh start reporting adjustments	—		—		(1,228,251		)	—
Total reorganization items	$	211	$	493	$	(2,745,180	)	$	7,215

Summary of Activity in Goodwill for Financial Guarantee Reporting Unit

The following is a summary of activity in goodwill for the Financial Guarantee reporting unit:

	Successor Ambac				Predecessor Ambac
			Period from May 1		Period from January 1
	Year Ended		through		through		Year Ended
	December 31, 2014		December 31, 2013		April 30, 2013		December 31, 2012
Beginning balance	$	514,511	$	—	$	—	$	—
Goodwill recorded in connection with emergence from Chapter 11	—		514,511		—		—
Accumulated impairment loss	—		—		—		—
Ending balance	$	514,511	$	514,511	$	—	$	—