Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Taxes [Abstract]

Deferred Tax Assets and Liabilities

     The significant components of the company's deferred tax assets and liabilities as of December 31, 2013 and 2012 were (in thousands):

	December 31,
	2013			2012
Current Deferred Tax Assets (Liabilities):
U.S. federal and state net operating loss carryforwards	$	344		$	8,909
Capitalized research and development costs		10,507			8,921
Accruals, reserves and other		24,661			25,374
Valuation allowance		(5,358	)		(4,988	)
Current deferred tax assets (liabilities), net		30,154			38,216
Noncurrent Deferred Tax Assets (Liabilities):
State net operating loss carryforwards		432			1,136
Capitalized research and development costs		-			15,847
Tax credit/capital loss carryforwards and other		15,375			18,296
Excess tax depreciation and other		(40,591	)		(42,602	)
Valuation allowance		(1,827	)		(3,556	)
Noncurrent deferred tax (liabilities) assets, net		(26,611	)		(10,879	)
Total deferred tax assets, net	$	3,543		$	27,337

Income Tax Provisions from Continuing Operations

     The company's income tax provisions for the years ended December 31, 2013, 2012 and 2011 were comprised of the following (in thousands):

	Years Ended December 31,
	2013			2012			2011
Current:
Federal	$	7,573		$	1,889		$	384
State		2,858			1,862			841
Foreign		61			102			115
Total current		10,492			3,853			1,340
Deferred:
Federal		25,667			29,264			29,558
State		(904	)		(2,339	)		(10,259	)
Total deferred		24,763			26,925			19,299
Total income tax provision	$	35,255		$	30,778		$	20,639

Effective Income Tax Rate Reconciliation

A reconciliation of the statutory federal income tax rate to the company's effective tax rate for the years ended December 31, 2013, 2012 and 2011 is as follows:

	2013		2012		2011
U.S. federal statutory rate		35.0%		35.0%		35.0%
State taxes		3.3		3.6		3.3
Domestic manufacturing deduction		(2.1)		-		-
Extraterritorial income exclusion		(1.0)		(3.1)		(8.7)
Research and development credits		(0.7)		(1.7)		(4.5)
Other, net		(0.5)		(0.3)		(1.7)
Effective rate		34.0%		33.5%		23.4%

Changes in Unrecognized Tax Benefits

Changes in the company's unrecognized tax benefits were as follows (in thousands):

	2013			2012			2011
Unrecognized tax benefits at beginning of year	$	18,200		$	16,732		$	12,386
Additions based on tax positions related to the current year		-			-			2,325
Additions for tax positions of prior years		646			1,548			2,351
Reduction resulting from lapse of statute of limitation		(10	)		(80	)		(330	)
Unrecognized tax benefits at end of year	$	18,836		$	18,200		$	16,732