Summary Of Operations And Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary Of Operations And Significant Accounting Policies [Abstract]

Summary Of Stock-Based Compensation Expense Related To Employee Stock Options

	December 31,
	2012		2011		2010
Cost of revenue	$	1,579	$	1,023	$	866
Product development expense		2,964		1,703		1,329
Sales and marketing expense		2,878		1,668		1,371
General and administrative expense		3,294		2,377		1,576
Total stock based compensation included in operating expenses	$	10,715	$	6,771	$	5,142

Weighted Average Assumptions Of Fair Value Options Using Black-Scholes Option-Pricing Model

	December 31,
	2012		2011		2010
Dividend yield		0.0%		0.0%		0.0%
Risk-free interest rate		0.6% – 0.9%		0.9% – 3.7%		2.6% – 3.8%
Expected life (in years)		5.0		5.0		5.0
Historical volatility		59.3% – 60.8%		60.1% – 61.5%		60.3% – 61.9%

Reconciliation Of Shares Used In Calculating Basic And Diluted Earnings Per Share

	Year Ended December 31,
	2012		2011		2010
Basic		55,292,597		52,876,999		50,721,880
Effect of assumed exercised options		1,838,444		2,131,743		2,185,661
Diluted		57,131,041		55,008,742		52,907,541

Summary Of Financial Information By Segment

	Consolidated		Corporate			Business		Consumer
Revenue:
Hosted services – Business	$	132,310	$	—		$	132,310	$	—
Hosted services – Consumer		15,111		—			—		15,111
Professional services		9,988		—			9,988		—
Total revenue		157,409		—			142,298		15,111
Cost of revenue		35,579		—			33,450		2,129
Sales and marketing		49,614		—			44,087		5,527
Amortization of intangibles		218		—			218		—
Unallocated corporate expenses		61,657		61,657			—		—
Operating income (loss)	$	10,341	$	(61,657	)	$	64,543	$	7,455

Summarized financial information by segment for the year ended December 31, 2011, based on the Company’s internal financial reporting system utilized by the Company’s chief operating decision makers, follows:

	Consolidated		Corporate			Business		Consumer
Revenue:
Hosted services – Business	$	111,934	$	—		$	111,934	$	—
Hosted services – Consumer		14,522		—			—		14,522
Professional services		6,633		—			6,633		—
Total revenue		133,089		—			118,567		14,522
Cost of revenue		33,195		—			29,793		3,402
Sales and marketing		38,884		—			32,690		6,194
Amortization of intangibles		109		—			109		—
Unallocated corporate expenses		41,266		41,266			—		—
Operating income (loss)	$	19,635	$	(41,266	)	$	55,975	$	4,926

Summarized financial information by segment for the year ended December 31, 2010, based on the Company’s internal financial reporting system utilized by the Company’s chief operating decision makers, follows:

	Consolidated		Corporate			Business		Consumer
Revenue:
Hosted services – Business	$	91,262	$	—		$	91,262	$	—
Hosted services – Consumer		14,195		—			—		14,195
Professional services		4,405		—			4,405		—
Total revenue		109,862		—			95,667		14,195
Cost of revenue		29,640		—			25,863		3,777
Sales and marketing		32,835		—			26,184		6,651
Amortization of intangibles		259		—			43		216
Unallocated corporate expenses		32,788		32,788			—		—
Operating income (loss)	$	14,340	$	(32,788	)	$	43,577	$	3,551

Revenues Attributable To Domestic And Foreign Operations

	December 31,
	2012		2011		2010
United States	$	118,208	$	101,519	$	84,725
United Kingdom		22,125		18,250		14,110
Other Countries		17,076		13,320		11,027
Total revenue	$	157,409	$	133,089	$	109,862

Long-Lived Assets By Geographic Region

	December 31,
	2012		2011
United States	$	35,711	$	28,626
Israel		23,750		13,167
Australia		10,361		—
United Kingdom		2,600		2,249
Total long-lived assets	$	72,422	$	44,042

Changes In Carrying Amount Of Goodwill

	Total		Business		Consumer
Balance as of December 31, 2011	$	24,090	$	16,066	$	8,024
Adjustments to goodwill:
Engage acquisition		6,073		6,073		—
LookIO acquisition		2,405		2,405		—
Contingent earnout payments		77		77		—
Balance as of December 31, 2012	$	32,645	$	24,621	$	8,024

The changes in the carrying amount of goodwill for the year ended December 31, 2011 are as follows:

	Total		Business		Consumer
Balance as of December 31, 2010	$	24,015	$	15,991	$	8,024
Adjustments to goodwill:
Contingent earnout payments		75		75		—
Balance as of December 31, 2011	$	24,090	$	16,066	$	8,024

Summary Of Intangible Assets

	As of December 31, 2012
	Gross Carrying Amount		Weighted Average Amortization Period		Accumulated Amortization
Amortizing intangible assets:
Technology	$	18,533		3.8 years	$	5,904
Customer relationships		5,061		3.5 years		2,485
Trade names		725		2.7 years		644
Non-compete agreements		486		1.2 years		421
Patents		475		11.0 years		145
Other		235		3.0 years		235
Total	$	25,515			$	9,834

	As of December 31, 2011
	Gross Carrying Amount		Weighted Average Amortization Period		Accumulated Amortization
Amortizing intangible assets:
Technology	$	6,199		3.8 years	$	5,474
Customer relationships		2,400		3.0 years		2,400
Trade names		630		3.0 years		630
Non-compete agreements		410		1.2 years		410
Patents		475		11.0 years		105
Other		235		3.0 years		235
Total	$	10,349			$	9,254