Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earning Per Shares Attributable to Company

The following table sets forth the computation of basic and diluted earnings per share attributable to the Company:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Numerator
Net loss attributable to Global Brass and Copper Holdings, Inc.	$	(17,132	)	$	(20,005	)	$	(5,744	)	$	(6,012	)
Denominator
Weighted-average common shares outstanding		21,110,000			21,110,000			21,110,000			21,110,000
Effect of potentially dilutive securities: Stock options and nonvested share awards		—			—			—			—
Weighted-average common shares outstanding, assuming dilution		21,110,000			21,110,000			21,110,000			21,110,000
Net loss attributable to Global Brass and Copper Holdings, Inc. per common share:
Basic	$	(0.81	)	$	(0.95	)	$	(0.27	)	$	(0.28	)
Diluted	$	(0.81	)	$	(0.95	)	$	(0.27	)	$	(0.28	)