Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Income Before Income Taxes

Income before income taxes consists of the following (in thousands):

	Year Ended December 31,
	2014		2013		2012
United States	$	25,152	$	91,318	$	102,159
International	5,609		1,664		27,123
Total	$	30,761	$	92,982	$	129,282

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year Ended December 31,
	2014			2013			2012
Current:
U.S. Federal	$	29,089		$	30,989		$	34,666
State	2,873			3,751			4,555
Foreign	10,930			11,224			6,097
	42,892			45,964			45,318
Deferred:
U.S. Federal	(20,347		)	(6,741		)	(2,069		)
State	(326		)	(1,164		)	(588		)
Foreign	(246		)	(294		)	82
	(20,919		)	(8,199		)	(2,575		)
Total	$	21,973		$	37,765		$	42,743

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Net deferred tax assets consist of the following (in thousands):

	Year Ended December 31,
	2014			2013
Deferred Tax Assets:
Accruals and allowances	$	25,756		$	24,488
Net operating loss carryforwards	6,210			7,069
Stock-based compensation	12,416			11,061
Deferred rent	2,137			1,963
Deferred revenue	1,654			1,535
Tax credit carryforwards	1,769			1,183
Acquired intangibles	21,916			1,791
Other	142			—
Total deferred tax assets	72,000			49,090
Deferred Tax Liabilities:
Depreciation and amortization	(1,245		)	(1,514		)
Other	—			(102		)
Total deferred tax liabilities	(1,245		)	(1,616		)
Valuation Allowance*:	(3,020		)	—
Net deferred tax assets	$	67,735		$	47,474
Current portion	$	29,039		$	27,239
Non-current portion	38,696			20,235
Net deferred tax assets	$	67,735		$	47,474

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The effective tax rate differs from the applicable U.S. statutory federal income tax rate as follows:

	Year Ended December 31,
	2014		2013		2012
Tax at federal statutory rate	35.0	%	35.0	%	35.0	%
State, net of federal benefit	2.5	%	2.2	%	2.1	%
Impact of international operations	19.8	%	3.9	%	(4.8	)%
Stock-based compensation	5.5	%	1.8	%	0.6	%
Tax credits	(3.8	)%	(1.9	)%	0.1	%
Valuation allowance	3.5	%	—	%	—	%
Goodwill impairment	7.8	%	—	%	—	%
Others	1.1	%	(0.4	)%	0.1	%
Provision for income taxes	71.4	%	40.6	%	33.1	%

Schedule of Reconciliation of Unrecognized Tax Benefits [Table Text Block]

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits (“UTB”) is as follows (in thousands):

	Federal, State, and Foreign Tax
Gross UTB Balance at December 31, 2011	$	17,335
Additions based on tax positions related to the current year	711
Additions for tax positions of prior years	956
Settlements	(2,620		)
Reductions for tax positions of prior years	(3,590		)
Reductions due to lapse of applicable statutes	(449		)
Adjustments due to foreign exchange rate movement	(4		)
Gross UTB Balance at December 31, 2012	12,339
Additions based on tax positions related to the current year	1,866
Additions for tax positions of prior years	4,106
Settlements	(3,134		)
Reductions for tax positions of prior years	(1,163		)
Reductions due to lapse of applicable statutes	(1,314		)
Adjustments due to foreign exchange rate movement	43
Gross UTB Balance at December 31, 2013	12,743
Additions based on tax positions related to the current year	1,894
Additions for tax positions of prior years	1,722
Settlements	(503		)
Reductions for tax positions of prior years	(152		)
Reductions due to lapse of applicable statutes	(1,838		)
Adjustments due to foreign exchange rate movement	(502		)
Gross UTB Balance at December 31, 2014	$	13,364