Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

Business and Summary of Significant Accounting Policies [Abstract]

Project Research and Development Expenses Incurred and Amounts Funded

The following table summarizes the COTS program research and development expenses incurred and amounts funded by NASA through completion of the program in 2013 (in millions):

	2013			2012			2011			Inception to December 31, 2013
Research and development costs incurred (1)	$	49.9		$	62.6		$	158.8		$	530.4
Less amounts funded by NASA		(5.8	)		(21.9	)		(108.0	)		(288.0	)
Net research and development expenses	$	44.1		$	40.7		$	50.8		$	242.4

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⁽¹⁾ Includes associated general and administrative expenses.

Computation of Basic and Diluted Earnings Per Share

The computation of basic and diluted earnings per share is as follows (dollars in thousands, except per share amounts):

	Years Ended December 31,
Numerator	2013			2012			2011
Net Income	$	68,366		$	61,006		$	67,394
Percentage allocated to shareholders (1)		99.8	%		99.6	%		99.1	%
Numerator for basic and diluted earnings per share	$	68,229		$	60,762		$	66,787
Denominator
Denominator for basic earnings per share -weighted-average shares outstanding		60,161			59,165			58,531
Dilutive effect of stock options and restricted stock units		283			292			596
Denominator for diluted earnings per share		60,444			59,457			59,127
Per share income
Basic	$	1.13		$	1.03		$	1.14
Diluted		1.13			1.02			1.13
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(1)Basic weighted-average shares outstanding		60,161			59,165			58,531
Basic weighted-average shares outstanding and
unvested restricted stock units expected to vest		60,247			59,428			59,078
Percentage allocated to shareholders		99.8	%		99.6	%		99.1	%

Useful Lives of Property, Plant and Equipment

     Depreciation expense is determined using the straight-line method based on the following useful lives:

Buildings	20 years
Machinery, equipment and software	3 to 12 years
Leasehold improvements	Shorter of estimated useful life or lease term