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Consolidated Statements of Total Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified | 2 Months Ended | 1 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | ---
Jun. 30, 2013 Successor Ambac [Member] | Apr. 30, 2013 Predecessor Ambac [Member] | Jun. 30, 2012 Predecessor Ambac [Member] | Apr. 30, 2013 Predecessor Ambac [Member] | Jun. 30, 2012 Predecessor Ambac [Member]
Unrealized (loss) gain on securities, taxes | $ 0 | $ 0 | $ 0 | $ 0 | $ 0
Loss on foreign currency translation, taxes | 0 | 0 | 0 | 0 | 0
Amortization of postretirement benefit, taxes | $ 0 | $ 0 | $ 0 | $ 0 | $ 0

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