Condensed Consolidated Statement of Changes in Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Treasury Stock
Beginning Balance at Dec. 31, 2012	$ 58,226	$ 1,171	$ 448,614	$ (391,783)	$ 224
Beginning Balance, Shares at Dec. 31, 2012		120,727,434
Net loss attributable to Signature Group Holdings, Inc.	(4,690)			(4,690)
Common stock acquired	(41)					(41)
Common stock acquired, Shares		(98,969)
Issuance of restricted stock, net of forfeitures			(41)			41
Issuance of restricted stock, net of forfeitures, Shares		1,231,708
Restricted stock vested		14	(14)
Amortization of share-based compensation	946		946
Common stock options exercised	21	1	20
Common stock options exercised, Shares		66,667
Common stock warrant consideration	60		60
Change in accumulated other comprehensive income (loss)	(224)				(224)
Ending Balance at Jun. 30, 2013	$ 54,298	$ 1,186	$ 449,585	$ (396,473)
Ending Balance, Shares at Jun. 30, 2013		121,926,840