Condensed Consolidated Statement of Changes in Stockholders' 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	$ 117	$ 449,668	$ (391,783)	$ 224
Beginning Balance, Shares at Dec. 31, 2012		12,074,314
Net loss attributable to Signature Group Holdings, Inc.	(10,548)			(10,548)
Common stock acquired	(41)					(41)
Common stock acquired, Shares		(9,897)
Issuance of restricted stock, net of forfeitures			(41)			41
Issuance of restricted stock, net of forfeitures, Shares		123,172
Restricted stock vested		2	(2)
Amortization of share-based compensation	1,503		1,503
Common stock options exercised	62		62
Common stock options exercised, Shares	20,668	20,668
Common stock warrant consideration	60		60
Change in accumulated other comprehensive income	(224)				(224)
Ending Balance at Sep. 30, 2013	$ 49,038	$ 119	$ 451,250	$ (402,331)
Ending Balance, Shares at Sep. 30, 2013		12,213,219