Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes consisted of:

	Year Ended December 31,
(In thousands)	2011			2012			2013
Current:
Federal	$	18,372		$	38,720		$	35,912
Foreign	14,976			19,248			12,071
State	4,011			4,296			4,121
Total current	37,359			62,264			52,104
Deferred:
Federal	4,345			1,359			(3,886		)
Foreign	(877		)	(910		)	(1,621		)
State	(809		)	(124		)	(2,575		)
Total deferred	2,659			325			(8,082		)
Total provision for income taxes	$	40,018		$	62,589		$	44,022

Reconciliation of Statutory Federal Tax Rate to Effective Tax Rate

A reconciliation of the statutory federal tax rate to the effective tax rate is as follows:

	Year Ended December 31,
	2011		2012		2013
Statutory federal tax rate	35.0	%	35.0	%	35.0	%
State taxes, net of federal benefit	1.9	%	1.5	%	0.7	%
Tax rate differentials for international jurisdictions	-4.1	%	-2.0	%	-3.8	%
Permanent differences	1.8	%	2.5	%	1.3	%
Other, net	-0.2	%	0.3	%	0.5	%
Effective tax rate	34.4	%	37.3	%	33.7	%

Significant Components of Deferred Tax Assets and Liabilities

Significant components of our deferred tax assets and liabilities are as follows:

(In thousands)	December 31, 2012			December 31, 2013
Deferred tax assets:
Share-based compensation	$	17,703		$	23,487
Accounts receivable	1,232			1,275
State income taxes	590			2,293
Vacation accruals	4,033			5,235
Deferred revenue	3,815			3,793
Deferred rent	10,477			13,736
Accruals not currently deductible	7,212			7,850
Net operating loss carryforwards	5,697			3,534
Charitable contribution carryforward	782			754
Foreign tax credit	1,583			1,723
Research and development credits	3,401			13,871
Other	(348		)	1,674
Total gross deferred tax assets	56,177			79,225
Deferred tax liabilities:
Depreciation	108,208			125,209
Share-based compensation	821			107
Prepaids	2,593			2,981
Total gross deferred tax liabilities	111,622			128,297
Net deferred tax assets (liabilities)	$	(55,445	)	$	(49,072	)

Reconciliation of Unrecognized Tax Benefits, Excluding Accrued Interest

A reconciliation of our unrecognized tax benefits, excluding accrued interest, for 2012 and 2013 is as follows:

(In thousands)	2012			2013
Balance, beginning of year	$	16,729		$	18,664
Additions based on tax positions related to the current year	1,946			3,919
Additions for tax positions of prior years	—			663
Reductions for tax positions of prior years	(11		)	—
Balance, end of year	$	18,664		$	23,246