Operating Segments and Related Disclosures (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Summary of Customers that Represented More than 10% of Net Sales

Customers that represented more than 10% of net sales for the periods presented are as follows:

	Three months ended March 31,		Three months ended February 28,		One month ended December 31,
	2016		2015		2015
Lockheed Martin Corporation	27	%	28	%	24	%
United Launch Alliance	20	%	17	%	28	%
Raytheon Company	17	%	23	%	19	%
NASA	14	%	13	%	10	%

Summary of Sales to U.S. Government and its Agencies

Sales to the U.S. government and its agencies, including sales to the Company’s significant customers discussed above, were as follows (dollars in millions):

	U.S. government sales		Percentage of net sales
Three months ended March 31, 2016	$	326.7	92	%
Three months ended February 28, 2015, as restated	300.5		93	%
One month ended December 31, 2015	82.0		85	%

Schedule of Selected Financial Information for Each Reportable Segment

Selected financial information for each reportable segment is as follows:

	Three months ended March 31,			Three months ended February 28,			One month ended December 31,
	2016			2015			2015
				As Restated
	(In millions)
Net Sales:
Aerospace and Defense	$	355.3		$	321.4		$	95.8
Real Estate	1.6			1.6			0.5
Total Net Sales	$	356.9		$	323.0		$	96.3
Segment Performance:
Aerospace and Defense	$	42.9		$	31.9		$	19.6
Environmental remediation provision adjustments	(0.6		)	(1.4		)	0.1
Retirement benefit plan expense	(12.5		)	(12.5		)	(4.1		)
Unusual items	0.1			0.7			(0.4		)
Aerospace and Defense Total	29.9			18.7			15.2
Real Estate	0.8			0.9			0.2
Total Segment Performance	$	30.7		$	19.6		$	15.4
Reconciliation of segment performance to income (loss) from continuing operations before income taxes:
Segment performance	$	30.7		$	19.6		$	15.4
Interest expense	(11.1		)	(13.4		)	(3.8		)
Interest income	0.2			0.1			—
Stock-based compensation (expense) benefit	(2.3		)	(5.3		)	0.4
Corporate retirement benefit plan expense	(4.7		)	(4.3		)	(1.5		)
Corporate and other expense, net	(3.8		)	(5.8		)	(1.5		)
Unusual items	(0.3		)	(0.2		)	—
Income (loss) from continuing operations before income taxes	$	8.7		$	(9.3	)	$	9.0