CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income	Noncontrolling Interest
Beginning Balance at Dec. 31, 2012	$ 58.2			$ 449.8	$ (391.8)	$ 0.2
Beginning Balance, Shares at Dec. 31, 2012		12,074,314
Net earnings (loss) attributable to Real Industry, Inc.	(10.0)				(10.0)
Common stock acquired	(0.3)		$ (0.3)
Common stock acquired, Shares		(32,885)	32,885
Issuance of restricted common stock, net of forfeitures			$ 0.2	(0.2)
Issuance of restricted stock, net of forfeitures, Shares		139,005	(20,768)
Common stock options exercised	0.1			0.1
Common stock options exercised, Shares		20,668
Common stock warrant consideration	0.1			0.1
Share-based compensation expense	2.1			2.1
Change in accumulated other comprehensive income (loss)	(0.2)					(0.2)
Ending Balance at Dec. 31, 2013	50.0		$ (0.1)	451.9	(401.8)
Ending Balance, Shares at Dec. 31, 2013		12,201,102	12,117
Net earnings (loss) attributable to Real Industry, Inc.	5.5				5.5
Earnings (loss) from continuing operations attributable to noncontrolling interest	(0.1)						$ (0.1)
Common stock issued, net	28.3			28.3
Common stock issued, Shares		4,684,615
Common stock acquired	(0.1)		$ (0.1)
Common stock acquired, Shares		(9,229)	9,229
Issuance of restricted common stock, net of forfeitures	0.0		$ 0.2	(0.2)
Issuance of restricted stock, net of forfeitures, Shares		73,394	(21,346)
Common stock options exercised	0.8			0.8
Common stock options exercised, Shares		150,000
Common stock warrant consideration	0.1			0.1
Share-based compensation expense	1.1			1.1
Ending Balance at Dec. 31, 2014	85.6			482.0	(396.3)		(0.1)
Ending Balance, Shares at Dec. 31, 2014		17,099,882
Net earnings (loss) attributable to Real Industry, Inc.	(6.9)				(6.9)
Earnings (loss) from continuing operations attributable to noncontrolling interest	0.1						0.1
Common stock issued, net	63.3			63.3
Common stock issued, Shares		11,304,673
Common stock acquired	(0.1)		$ (0.1)	0.1	(0.1)
Common stock acquired, Shares		(9,698)	9,698
Issuance of restricted stock, net of forfeitures, Shares		240,990
Common stock options exercised	1.2			1.2
Common stock options exercised, Shares		229,892
Exercise of Warrants	0.2			0.2
Exercise of Warrants, Shares		26,027
Noncontrolling interest acquired in business combination	0.8						0.8
Share-based compensation expense	1.5			1.5
Dividends and accretion on Redeemable Preferred Stock	(2.3)			(2.3)	0.0
Change in accumulated other comprehensive income (loss)	(1.0)					(1.0)
Ending Balance at Dec. 31, 2015	$ 142.4		$ (0.1)	$ 546.0	$ (403.3)	$ (1.0)	$ 0.8
Ending Balance, Shares at Dec. 31, 2015		28,891,766	9,698