Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2013

Equity [Abstract]

Computation of Basic and Diluted Earnings Per Share

The following is a reconciliation of the numerators and denominators of the basic and diluted EPS computations for the three months ended March 31, 2013 and 2012:

	2013		2012
Numerator used in basic and diluted EPS:
Net income	$	80,511	$	74,601
Denominator:
Weighted average number of common shares used in basic EPS		168,078,589		164,836,992
Effect of dilutive shares:
Potential common shares issuable from stock options and stock awards		4,682,052		6,513,828
Weighted average number of common shares and dilutive potential common shares used in diluted EPS		172,760,641		171,350,820
Basic net income per share	$	0.48	$	0.45
Diluted net income per share	$	0.47	$	0.44

Summary of Accumulated Other Comprehensive Losses

The following is a summary of accumulated other comprehensive losses as of March 31, 2013 and December 31, 2012:

	2013			2012
Unrealized (losses) gains on available-for-sale securities, net of tax	$	(158	)	$	72
Pension and postretirement unfunded liability adjustment, net of tax		(87,403	)		(88,272	)
Unrealized foreign currency losses		(1,366	)		(960	)
Accumulated other comprehensive losses	$	(88,927	)	$	(89,160	)

Before Tax and After Tax Amounts of Other Comprehensive Income

The before tax and after tax amounts of other comprehensive income for the three months ended March 31, 2013 and 2012 are summarized below:

	Before Tax			Tax Benefit (Expense)			After Tax
March 31, 2013
Unrealized holding loss on available-for-sale securities before reclassifications	$	(1,018	)	$	379		$	(639	)
Amount reclassified from accumulated other comprehensive losses (1)		647			(238	)		409
Unrealized holding loss on available-for-sale securities		(371	)		141			(230	)
Pension and postretirement unfunded liability adjustment before reclassifications		2,802			(1,046	)		1,756
Amortization of prior service benefit reclassified from accumulated other comprehensive losses (2)		38			(14	)		24
Amortization of net actuarial loss reclassified from accumulated other comprehensive losses (2)		(1,439	)		528			(911	)
Pension and postretirement unfunded liability adjustment		1,401			(532	)		869
Unrealized foreign currency loss		(406	)		—			(406	)
Total other comprehensive income	$	624		$	(391	)	$	233
March 31, 2012
Unrealized holding loss on available-for-sale securities before reclassifications	$	(651	)	$	254		$	(397	)
Amount reclassified from accumulated other comprehensive losses (1)		330			(130	)		200
Unrealized holding loss on available-for-sale securities		(321	)		124			(197	)
Pension and postretirement unfunded liability adjustment before reclassifications		3,416			(1,452	)		1,964
Amortization of prior service benefit reclassified from accumulated other comprehensive losses (2)		171			(67	)		104
Amortization of net actuarial loss reclassified from accumulated other comprehensive losses (2)		(1,879	)		739			(1,140	)
Pension and postretirement unfunded liability adjustment		1,708			(780	)		928
Unrealized foreign currency gain		153			—			153
Total other comprehensive income	$	1,540		$	(656	)	$	884

(1) Unrealized holding loss on available-for-sale securities, before tax, reclassified to net income is included under “Realized (loss) gain on available-for-sale securities, net” in the accompanying condensed consolidated statements of operations.

(2) Amortization of prior service benefit and amortization of net actuarial loss, before tax, reclassified to net income are included under “Cost of revenues” and “Selling, general and administrative” in the accompanying condensed consolidated statements of operations. These components are also included in the computation of net periodic (benefit) cost (see Note. 11 Pension and Postretirement Benefits for additional details).