Broadsoft (BSFT) 10-Q 4 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 01, 2013
Document Document And Entity Information [Abstract]	'	'
Entity Registrant Name	'BROADSOFT, INC.	'
Entity Central Index Key	'0001086909	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	'Q3	'
Amendment Flag	'false	'
Entity Common Stock, Shares Outstanding	'	28,239,781

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$79,056	$90,545
Short-term investments	78,604	73,075
Accounts receivable, net of allowance for doubtful accounts of $150 and $139 at September 30, 2013 and December 31, 2012, respectively	44,936	48,980
Deferred tax assets	5,110	3,732
Other current assets	10,829	10,796
Total current assets	218,535	227,128
Long-term assets:	'	'
Property and equipment, net	9,097	7,361
Long-term investments	30,834	30,102
Restricted cash	582	584
Intangible assets, net	16,826	11,247
Goodwill	59,450	37,529
Other long-term assets	19,459	12,955
Total long-term assets	136,248	99,778
Total assets	354,783	326,906
Current liabilities:	'	'
Accounts payable and accrued expenses	15,518	15,686
Notes payable and bank loans, current portion	0	555
Deferred revenue, current portion	52,214	49,368
Total current liabilities	67,732	65,609
Convertible senior notes	90,234	86,451
Notes payable and bank loans	0	414
Deferred revenue	5,472	11,781
Other long-term liabilities	2,584	1,416
Total liabilities	166,022	165,671
Commitments and contingencies	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.01 par value per share; 5,000,000 shares authorized at September 30, 2013 and December 31, 2012; no shares issued and outstanding at September 30, 2013 and December 31, 2012	0	0
Common stock, par value $0.01 per share; 100,000,000 shares authorized at September 30, 2013 and December 31, 2012; 28,228,879 and 27,913,471 shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	282	279
Additional paid-in capital	244,201	208,073
Accumulated other comprehensive loss	-2,227	-3,008
Accumulated deficit	-53,495	-44,109
Total stockholders’ equity	188,761	161,235
Total liabilities and stockholders’ equity	$354,783	$326,906

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Allowance for doubtful accounts	$150	$139
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	'	'
Preferred stock, shares outstanding	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	28,228,879	27,913,471
Common stock, shares outstanding	28,228,879	27,913,471

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:	'	'	'	'
License software	$21,518	$21,554	$67,059	$65,320
Subscription and maintenance support	17,694	15,375	49,185	41,542
Professional services and other	3,688	3,245	10,290	12,171
Total revenue	42,900	40,174	126,534	119,033
Cost of revenue:	'	'	'	'
License software	2,257	2,030	6,836	6,904
Subscription and maintenance support	5,622	3,667	15,015	10,512
Professional services and other	2,656	2,028	8,221	6,702
Total cost of revenue	10,535	7,725	30,072	24,118
Gross profit	32,365	32,449	96,462	94,915
Operating expenses:	'	'	'	'
Sales and marketing	15,117	11,396	44,382	34,076
Research and development	11,858	8,876	37,161	26,483
General and administrative	8,379	5,701	23,976	17,395
Total operating expenses	35,354	25,973	105,519	77,954
(Loss) income from operations	-2,989	6,476	-9,057	16,961
Other expense (income):	'	'	'	'
Interest income	-112	-110	-343	-347
Interest expense	1,926	1,737	5,532	5,156
Total other expense, net	1,814	1,627	5,189	4,809
(Loss) income before income taxes	-4,803	4,849	-14,246	12,152
(Benefit from) provision for income taxes	-749	1,709	-4,860	4,955
Net (loss) income	-4,054	3,140	-9,386	7,197
Net (loss) income per common share:	'	'	'	'
Basic	($0.14)	$0.11	($0.33)	$0.26
Diluted	($0.14)	$0.11	($0.33)	$0.25
Weighted average common shares outstanding:	'	'	'	'
Basic	28,160	27,673	28,063	27,487
Diluted	28,160	28,385	28,063	28,293
Stock-based compensation expense included above:	'	'	'	'
Stock-based compensation expense	'	'	30,722	10,298
Cost of revenue	'	'	'	'
Stock-based compensation expense included above:	'	'	'	'
Stock-based compensation expense	1,290	385	3,556	1,276
Sales and marketing	'	'	'	'
Stock-based compensation expense included above:	'	'	'	'
Stock-based compensation expense	3,847	1,317	10,404	3,845
Research and development	'	'	'	'
Stock-based compensation expense included above:	'	'	'	'
Stock-based compensation expense	3,371	1,040	9,858	2,940
General and administrative	'	'	'	'
Stock-based compensation expense included above:	'	'	'	'
Stock-based compensation expense	$2,457	$584	$6,904	$2,237

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net (loss) income	($4,054)	$3,140	($9,386)	$7,197
Other comprehensive (loss) income, net of tax:	'	'	'	'
Foreign currency translation adjustment	1,413	210	778	-480
Unrealized gain on investments	108	35	3	56
Total other comprehensive (loss) income, net of tax	1,521	245	781	-424
Comprehensive (loss) income	($2,533)	$3,385	($8,605)	$6,773

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock Par Value $0.01 Per Share	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2011	$133,243	$271	$191,714	($2,557)	($56,185)
Balance, shares at Dec. 31, 2011	'	27,106	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Stock Issued During Period, Value, Stock Options Exercised	832	7	825	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	'	705	'	'	'
Stock-based compensation expense	10,298	'	10,298	'	'
Tax windfall (shortfall) benefits on exercises of stock options	-61	'	-61	'	'
Foreign currency translation adjustment	-480	'	'	-480	'
Unrealized gain (loss) on investments	56	'	'	56	'
Net (loss) income	7,197	'	'	'	7,197
Balance at Sep. 30, 2012	151,085	278	202,776	-2,981	-48,988
Balance, shares at Sep. 30, 2012	'	27,811	'	'	'
Balance at Dec. 31, 2012	161,235	279	208,073	-3,008	-44,109
Balance, shares at Dec. 31, 2012	'	27,913	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Stock Issued During Period, Value, Stock Options Exercised	-1,183	3	-1,186	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	168,774	316	'	'	'
Stock-based compensation expense	30,722	'	30,722	'	'
Tax windfall (shortfall) benefits on exercises of stock options	6,592	'	6,592	'	'
Foreign currency translation adjustment	778	'	'	778	'
Unrealized gain (loss) on investments	3	'	'	3	'
Net (loss) income	-9,386	'	'	'	-9,386
Balance at Sep. 30, 2013	$188,761	$282	$244,201	($2,227)	($53,495)
Balance, shares at Sep. 30, 2013	'	28,229	'	'	'

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:	'	'
Net (loss) income	($9,386)	$7,197
Adjustment to reconcile net (loss) income to net cash provided by operating activities:	'	'
Depreciation and amortization	5,495	3,668
Amortization of software licenses	2,240	1,913
Stock-based compensation expense	30,722	10,298
Provision for doubtful accounts	125	404
(Benefit from) provision for deferred income taxes	-4,827	4,397
Excess tax benefit related to share-based compensation	-6,592	0
Non-cash interest expense on convertible senior notes	4,088	3,801
Changes in operating assets and liabilities, net of acquisitions:	'	'
Accounts receivable	4,847	5,109
Other current and long-term assets	1,173	-14,177
Accounts payable, accrued expenses and other long-term liabilities	-2,063	-1,587
Current and long-term deferred revenue	-3,503	-3,095
Net cash provided by operating activities	22,319	17,928
Cash flows from investing activities:	'	'
Additions to property and equipment	-3,775	-2,377
Payments for acquisitions, net of cash acquired	-28,112	-25,177
Purchases of marketable securities	-92,596	-113,977
Proceeds from sale of marketable securities	0	3,000
Proceeds from maturities of marketable securities	86,335	118,378
Change in restricted cash	0	375
Net cash used in investing activities	-38,148	-19,778
Cash flows from financing activities:	'	'
Proceeds from the exercise of stock options	1,184	2,189
Taxes paid on vesting of RSUs	-2,367	-1,922
Excess tax benefit related to share-based compensation	6,592	0
Notes payable and bank loans—payments	-969	-409
Net cash provided by (used in) financing activities	4,440	-142
Effect of exchange rate changes on cash and cash equivalents	-100	129
Net decrease in cash and cash equivalents	-11,489	-1,863
Cash and cash equivalents, beginning of period	90,545	94,072
Cash and cash equivalents, end of period	$79,056	$92,209

Nature_of_Business

Nature of Business	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Nature of Business	'
	Nature of Business
	BroadSoft, Inc. (“BroadSoft” or the “Company”), a Delaware corporation, was formed in 1998. The Company is the leading global provider of software and services that enable mobile, fixed-line and cable service providers to deliver hosted, or cloud-based, Unified Communications and other voice and multimedia services over their Internet protocol, or IP, based networks. The Company’s core communications platform consists of three offerings: BroadWorks, BroadCloud and BroadTouch.

Financial_Statement_Presentati

Financial Statement Presentation	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Financial Statement Presentation	'
	Financial Statement Presentation
	Principles of Consolidation
	The accompanying unaudited condensed consolidated financial statements include the accounts and results of operations of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in the accompanying unaudited condensed consolidated financial statements.
	Interim Financial Presentation
	The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with Generally Accepted Accounting Principles in the United States of America (“U.S. GAAP”) as contained in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification for interim financial information and Article 10 of Regulation S-X issued by the United States Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual fiscal reporting periods. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the financial position, results of operations, comprehensive income, changes in stockholders’ equity and cash flows. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of results that may be expected for the year ending December 31, 2013 or any other period. The accompanying condensed consolidated financial statements are unaudited and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Form 10-K for the fiscal year ended December 31, 2012 filed with the SEC on February 27, 2013.
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual amounts could differ from these estimates.
	Recent Accounting Pronouncements
	In February 2013, FASB issued a new accounting standard requiring disclosure of items reclassified from other comprehensive income (loss) to net income. This guidance is effective for periods beginning after December 15, 2012 and early application is permitted. The adoption of this standard did not have a significant impact on the Company’s financial position, results of operations or cash flows.
	In March 2013, the FASB issued new accounting guidance clarifying the accounting for the release of cumulative translation adjustment into net income when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2013. The Company does not anticipate that the adoption of this standard will have a significant impact on the Company’s financial position, results of operations or cash flows.
	In July 2013, the FASB issued guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss or a tax credit carryforward exists. The guidance requires that an unrecognized tax benefit should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. The guidance further requires that when a net operating loss carryforward, a similar tax loss or a tax credit carryforward is not available at the reporting date, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2013. The Company does not anticipate that the adoption of this standard will have a significant impact on the Company’s financial position.

Investments_and_Fair_Value_Dis

Investments and Fair Value Disclosures	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Investments and Fair Value Disclosures	'
	Investments and Fair Value Disclosures
	Investments in Marketable Securities
	Marketable securities that the Company does not intend to hold to maturity are classified as available-for-sale, are carried at fair value and are included on the Company’s balance sheet as either short-term or long-term investments depending on their maturity. Investments with original maturities greater than three months that mature less than one year from the consolidated balance sheet date are classified as short-term investments. Investments with maturities greater than one year from the consolidated balance sheet date are classified as long-term investments. Available-for-sale investments are marked-to-market at the end of each reporting period, with unrealized holding gains or losses, which represent temporary changes in the fair value of the investment, reflected in accumulated other comprehensive loss, a separate component of stockholders’ equity. The Company’s primary objective when investing excess cash is preservation of principal. The following table summarizes the Company’s investments:
		30-Sep-13
		Contracted Maturity		Carrying Value
				(in thousands)
	Money market funds	demand		$	60,825
	Total cash equivalents			$	60,825
	U.S. agency notes	31 - 337 days		$	38,640
	Commercial paper	2 - 123 days		7,997
	Corporate bonds	38 - 287 days		31,967
	Total short-term investments			$	78,604
	U.S. agency notes	421 - 627 days		$	13,014
	Corporate bonds	366 - 564 days		17,820
	Total long-term investments			$	30,834
	Fair Value
	The following table summarizes the carrying and fair value of the Company’s financial assets (in thousands):
		September 30, 2013						December 31, 2012
		Carrying Value				Fair Value		Carrying Value		Fair Value
	Assets
	Cash equivalents and certificates of deposit*	$	61,407			$	61,407	$	63,795	$	63,795
	Short and long-term investments	109,438				109,438		103,177		103,177
	Total assets	$	170,845			$	170,845	$	166,972	$	166,972
	* Includes $0.6 million of restricted cash as of September 30, 2013 and December 31, 2012 and excludes $18.2 million and $27.4 million of operating cash balances as of September 30, 2013 and December 31, 2012, respectively.
	The carrying amounts of the Company’s other financial instruments, accounts receivable, accounts payable and accrued expenses, approximate their respective fair values due to their short-term nature. (See Note 8 Borrowings for additional information on the fair value of debt.)
	The Company uses a three-tier fair value measurement hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The three tiers are defined as follows:
	•	Level 1. Observable inputs based on unadjusted quoted prices in active markets for identical instruments and include the Company’s investments in money market funds and certificates of deposit;
	•	Level 2. Inputs valued using quoted market prices for similar instruments, nonbinding market prices that are corroborated by observable market data and include the Company’s investments and marketable securities in U.S. agency notes, commercial paper and corporate bonds; and
	•	Level 3. Unobservable inputs for which there is little or no market data, which require the Company to develop its own assumptions.
	Assets Measured at Fair Value on a Recurring Basis
	The Company evaluates its financial assets subject to fair value measurements on a recurring basis to determine the appropriate level of classification for each reporting period. This determination requires significant judgments to be made. There were no transfers between classification levels during the periods. The following tables summarize the values (in thousands):
		September 30, 2013				Level 1		Level 2		Level 3
	Money market funds	$	60,825			$	60,825	—		—
	Certificates of deposit	582				582		—		—
	Total cash equivalents and certificates of deposit*	61,407				61,407		—		—
	U.S. agency notes	51,654				—		51,654		—
	Commercial paper	7,997				—		7,997		—
	Corporate bonds	49,787				—		49,787		—
	Total investments	109,438				—		109,438		—
	Total cash equivalents, certificates of deposit and investments	$	170,845			$	61,407	$	109,438	$	—
		December 31, 2012				Level 1		Level 2		Level 3
	Money market funds	$	63,189			$	63,189	—		—
	Certificates of deposit	606				606		—		—
	Total cash equivalents and certificates of deposit*	63,795				63,795		—		—
	U.S. agency notes	43,767				—		43,767		—
	Commercial paper	27,489				—		27,489		—
	Corporate bonds	31,921				—		31,921		—
	Total investments	103,177				—		103,177		—
	Total cash equivalents, certificates of deposit and investments	$	166,972			$	63,795	$	103,177	$	—
	* Includes $0.6 million of restricted cash as of September 30, 2013 and December 31, 2012 and excludes $18.2 million and $27.4 million of operating cash balances as of September 30, 2013 and December 31, 2012, respectively.
	Assets Measured at Fair Value on a Nonrecurring Basis
	The Company measures certain assets, including property and equipment, goodwill and intangible assets, at fair value on a nonrecurring basis. These assets are recognized at fair value when they are deemed to be other-than-temporarily impaired. During the nine months ended September 30, 2013 and 2012, there were no fair value measurements of assets or liabilities measured at fair value on a nonrecurring basis subsequent to their initial recognition.

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	Acquisitions
	HIPCOM
	On August 12, 2013, the Company completed its acquisition of all outstanding shares of Hosted IP Communications (Europe) Limited ("HIPCOM"), a provider of hosted business VoIP services. The acquisition enables the Company to extend its BroadCloud delivery platform to customers in the United Kingdom and Europe. The total cash consideration paid for HIPCOM was $26.3 million. The Company funded the acquisition with cash on hand. The Company incurred $0.5 million of transaction costs for financial advisory and legal services related to the acquisition that are included in general and administrative expenses as incurred, in the Company’s condensed consolidated statements of operations for the three and nine months ended September 30, 2013.
	The condensed consolidated financial statements include the results of HIPCOM from the date of acquisition. The purchase price has been preliminarily allocated to the assets acquired and liabilities assumed based on estimated fair values as of the acquisition date. The Company has not finalized the purchase price allocation for this acquisition.
	The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the acquisition date of August 12, 2013 (in thousands):
	Cash and cash equivalents	$	216
	Accounts receivable	928
	Other current assets	475
	Property and equipment	311
	Trade name	310
	Customer relationships	6,663
	Developed technology	465
	Goodwill	18,526
	Deferred tax liability, net	(799		)
	Accounts payable and accrued expenses	(752		)
	Total consideration	$	26,343
	The trade name represents the fair value of the HIPCOM trade name that the Company intends to use for a fixed period of time. Customer relationships represent the fair value of the underlying relationships and agreements with HIPCOM customers. Developed technology represents the fair value of HIPCOM's intellectual property. The trade name, customer relationships, and developed technology are being amortized on a straight-line basis over a period of one year, seven years and two years, respectively, which in general reflects the cash flows generated from such assets. The weighted-average amortization period for depreciable intangible assets acquired is approximately six years.
	The excess of purchase consideration over the fair value of the net tangible and identifiable intangible assets acquired of $18.5 million was recorded as goodwill. The initial purchase price allocation is preliminary as of September 30, 2013. Changes to amounts recorded as assets or liabilities as additional information is received may result in a corresponding adjustment to goodwill. The goodwill balance is attributable to the assembled workforce and the expected synergies, including complementary products that enhance the Company's overall product portfolio. In accordance with U.S. GAAP, goodwill associated with this acquisition will not be amortized but will be tested for impairment on an annual basis. Goodwill associated with this acquisition is not deductible for tax purposes.
	Pro Forma Financial Information for Acquisition of HIPCOM (unaudited)
	HIPCOM contributed revenue of $0.9 million and a net loss of $0.1 million for the period from the date of acquisition to September 30, 2013.
	The unaudited pro forma statement of operations data below gives effect to the acquisition of HIPCOM as if it had occurred on January 1, 2012. The following data includes adjustments for amortization of intangible assets and acquisition costs. This pro forma data is presented for information purposes only and does not purport to be indicative of the results of future operations or of the results that would have occurred had the acquisition taken place on January 1, 2012.
		Three Months Ended September 30,					Nine Months Ending September 30,
		2013			2012		2013			2012
		(In thousands except per share data)
	Revenue	$	43,471		$	41,477	$	130,015		$	122,662
	Net (loss) income	(3,515		)	2,971		(8,945		)	6,157
	Net (loss) income per common share, basic	$	(0.12	)	$	0.11	$	(0.32	)	$	0.22
	Net (loss) income per common share, diluted	$	(0.12	)	$	0.1	$	(0.32	)	$	0.22

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill	'
	Goodwill
	The following table provides a summary of the changes in the carrying amounts of goodwill (in thousands):
	Balance as of December 31, 2012, gross	$	37,529
	Accumulated impairment loss	—
	Balance as of December 31, 2012, net	37,529
	Increase in goodwill related to acquisitions	20,667
	Other	1,254
	Balance as of September 30, 2013, gross	59,450
	Accumulated impairment loss	—
	Balance as of September 30, 2013, net	$	59,450
	The increase in “goodwill related to acquisitions” consists of $18.5 million of goodwill related to the acquisition of HIPCOM and $2.1 million of goodwill related to the acquisition of a development services company in September 2013. Any change in the goodwill amounts resulting from foreign currency translations are presented as “Other” in the above table.

Deferred_Revenue

Deferred Revenue	9 Months Ended
	Sep. 30, 2013
Revenue Recognition [Abstract]	'
Deferred Revenue	'
	Deferred Revenue
	Deferred revenue represents amounts billed to or collected from customers for which the related revenue has not been recognized because one or more of the revenue recognition criteria have not been met. The current portion of deferred revenue is expected to be recognized as revenue within 12 months from the balance sheet date. Deferred revenue consisted of the following (in thousands):
		September 30,		December 31,
		2013		2012
	License software	$	14,515	$	18,375
	Subscription and maintenance support	33,579		35,701
	Professional services and other	9,592		7,073
	Total	$	57,686	$	61,149
	Current portion	$	52,214	$	49,368
	Non-current portion	5,472		11,781
	Total	$	57,686	$	61,149

Software_Licenses

Software Licenses	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Software Licenses	'
	Software Licenses
	The Company was previously party to an agreement that provided the Company the right to distribute certain third-party software on a per-user basis up to 35,000,000 licenses over a four-year period for $6.4 million. The arrangement required the Company to pay a per-user license fee for licenses distributed in excess of 35,000,000. The cost was amortized to cost of revenue over a 3.5 year period ended May 2012, based on the greater of actual usage or the straight line method.
	In 2011, the Company entered into a new agreement that provides the Company the right to distribute this third-party software on an unlimited basis through May 2016 at a total cost of $10.2 million. To the extent billed license revenue over the four-year period exceeds $460 million, the Company would be required to pay additional fees. The additional cost of $10.2 million is being amortized to cost of revenue over the four-year period beginning in June 2012 (the expiration of the previous agreement), based on the straight line method.
	Amortization expense related to these agreements was approximately $1.9 million for each of the nine months ended September 30, 2013 and 2012.

Borrowings

Borrowings	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Borrowings	'
	Borrowings
	Convertible Senior Notes
	In June 2011, the Company issued $120.0 million aggregate principal amount of 1.50% convertible senior notes due in 2018 (the “Notes”). The Notes are senior unsecured obligations of the Company, with interest payable semi-annually in cash at a rate of 1.50% per annum, and will mature on July 1, 2018, unless earlier repurchased, redeemed or converted.
	The Notes may be converted by the holders of Notes at their option on any day prior to the close of business on the scheduled trading day immediately preceding April 1, 2018 only under the following circumstances: (a) during the five business-day period after any ten consecutive trading-day period (the “measurement period”) in which the trading price per Note for each day of that measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the applicable conversion rate on each such day; (b) during any calendar quarter (and only during such quarter) after the calendar quarter ended June 30, 2012, if the last reported sale price of the common stock for 20 or more trading days in a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter exceeds 130% of the applicable conversion price in effect on the last trading day of the immediately preceding calendar quarter; (c) upon the occurrence of specified corporate events; or (d) if the Company calls the Notes for redemption. The Notes will be convertible, regardless of the foregoing circumstances, at any time from, and including, April 1, 2018 through the second scheduled trading day immediately preceding the maturity date.
	The initial conversion rate for the Notes is 23.8126 shares of the Company’s common stock per $1,000 principal amount of Notes, equivalent to a conversion price of approximately $41.99 per share of common stock. The conversion price will be subject to adjustment in some events, but will not be adjusted for accrued interest. In addition, if a make-whole fundamental change, as defined in the indenture governing the Notes (the “Indenture”), occurs prior to the maturity date, the Company will in some cases increase the conversion rate for a holder that elects to convert its Notes in connection with such make-whole fundamental change. Upon conversion, the Company will pay cash up to the aggregate principal amount of the Notes to be converted and deliver shares of the common stock in respect of the remainder, if any, of the conversion obligation in excess of the aggregate principal amount of the Notes being converted. While the Notes were not convertible as of September 30, 2013, if the Notes were convertible, no shares would have been distributed upon conversion because the conversion price was above the stock price as of such date.
	Holders of the Notes may require the Company to repurchase some or all of the Notes for cash, subject to certain exceptions, upon a fundamental change, as defined in the Indenture, at a repurchase price equal to 100% of the principal amount of the Notes being repurchased, plus any accrued and unpaid interest up to but excluding the relevant repurchase date.
	The Company may not redeem the Notes prior to July 1, 2015. Beginning July 1, 2015, the Company may redeem for cash all or part of the Notes (except for the Notes that the Company is required to repurchase as described above) if the last reported sale price of the common stock exceeds 140% of the applicable conversion price for 20 or more trading days in a period of 30 consecutive trading days ending on the trading day immediately prior to the date of the redemption notice. The redemption price will equal the sum of 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, plus a “make-whole premium” payment. The Company must make the make-whole premium payments on all Notes called for redemption prior to the maturity date, including Notes converted after the date the Company delivered the notice of redemption.
	The Company has separately accounted for the liability and equity components of the convertible debt instrument by allocating the gross proceeds from the issuance of the Notes between the liability component and the embedded conversion option, or equity component. This allocation was done by first estimating an interest rate at the time of issuance for similar notes that do not include the embedded conversion option. This interest rate, estimated at 8%, was used to compute the initial fair value of the liability component of $79.4 million. The excess of the gross proceeds received from the issuance of the Notes over the initial amount allocated to the liability component, of $40.6 million, was allocated to the embedded conversion option, or equity component. This excess is reported as a debt discount and subsequently amortized as interest expense, using the interest method, through July 2018, the maturity date of the Notes. Offering costs, consisting of the initial purchasers’ discount and offering expenses payable by the Company, were $4.3 million. These offering costs were allocated to the liability component and the equity component based on the relative valuations of such components. As a result, $2.9 million of the offering costs were classified as debt issuance costs and recorded on the balance sheet in other assets.
	The fair value of the Notes as of September 30, 2013 and December 31, 2012 was $133.2 million and $135.8 million, respectively. The carrying amount of the equity component of the Notes was $29.8 million at September 30, 2013. The unamortized offering costs at September 30, 2013 were $1.9 million which is being amortized as interest expense through the July 2018 maturity date of the Notes. The remaining $1.4 million of offering costs were allocated to the equity component.
	The following table shows the amounts recorded within the Company’s financial statements with respect to the Notes (in thousands):
		September 30, 2013			December 31, 2012
	Convertible debt principal	$	120,000		$	120,000
	Unamortized debt discount	(29,766		)	(33,549		)
	Net carrying amount of convertible debt	$	90,234		$	86,451
	The following table presents the interest expense recognized related to the Notes (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Contractual interest expense	$	450		$	450		$	1,350	$	1,350
	Amortization of debt issuance costs	101			102			304		304
	Accretion of debt discount	1,281			1,185			3,784		3,497
	Net interest expense	$	1,832		$	1,737		$	5,438	$	5,151
	Installment Loans
	In connection with the acquisition of Movial Applications, Inc. in October 2011, the Company assumed five installment loans with Tekes, the Finnish Funding Agency for Technology and Innovation, which loans were repaid in full by the Company during the three months ended September 30, 2013. The loans were governed by the Finnish Act on State Lending and State Guarantees, Government Decree on Research, Development and Innovation Funding and were used to fund approved research and development projects. The repayment terms were determined on a per project basis and the interest rate on each was variable, with the interest rate equal to three percent at the time of repayment. As of December 31, 2012, the aggregate balance of the loans was approximately $1.0 million.
	Fair value for the Company’s borrowings is estimated using quoted market prices of the Notes at September 30, 2013, quoted market prices for similar instruments and by observable market data. The Company believes its creditworthiness and the financial market in which it operates has not materially changed since entering into the arrangements. If measured at fair value in the financial statements, long-term debt (including the current portion) would be classified as Level 2 in the fair value hierarchy.
	The aggregate maturities of borrowings as of September 30, 2013 were as follows (in thousands):
	2013 - 2016		$	—
	2017 and thereafter		120,000
			$	120,000

Stockbased_Compensation

Stock-based Compensation	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-based Compensation	'
	Stock-based Compensation
	Equity Incentive Plans
	In 1999, the Company adopted the 1999 Stock Incentive Plan (the “1999 Plan”). The 1999 Plan provided for the grant of incentive stock options, nonqualified stock options, restricted stock awards and stock appreciation rights. The 1999 Plan terminated in June 2009 whereby no new options or awards are permitted to be granted. In April 2009, the Company adopted the 2009 Equity Incentive Plan. This plan provides for the grant of incentive stock options, nonqualified stock options, restricted stock awards, restricted stock units (“RSUs”) and stock appreciation rights. In June 2010, in connection with the Company’s initial public offering (“IPO”), the 2009 Equity Incentive Plan was amended and restated to provide for, among other things, annual increases in the share reserve (as amended and restated, the “2009 Plan”). On January 1, 2012 and 2013, 1,219,787 and 1,250,000 shares, respectively, were added to the 2009 Plan. At September 30, 2013, the Company had 244,399 shares of common stock available for issuance under the 2009 Plan.
	Stock-based compensation expense recognized by the Company was as follows (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Stock options	$	2,020		$	1,506		$	6,463	$	4,568
	Restricted stock units	7,534			1,750			20,706		5,640
	Performance stock units	1,411			70			3,553		90
	Total recognized stock-based compensation expense	$	10,965		$	3,326		$	30,722	$	10,298
	Stock Options
	The following table presents summary information related to stock options:
		Number of Options Outstanding		Weighted Average Exercise Price			Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
									(in thousands)
	Balance, December 31, 2012	1,474,346		$	23.5
	Granted	481,905
	Exercised	(168,774	)
	Forfeited	(72,578	)
	Balance, September 30, 2013	1,714,899		$	27.42		8.17		$17,171
	Vested at September 30, 2013	657,522		$	17.54		6.83		$12,978
	Exercisable at September 30, 2013	657,522		$	17.54		6.83		$12,978
	The Company granted 481,905 stock options during the nine months ended September 30, 2013 and 334,100 stock options during the nine months ended September 30, 2012. For the nine months ended September 30, 2013 and September 30, 2012, the intrinsic value of stock options exercised was $4.2 million and $19.9 million, respectively, and cash received from stock options exercised was $1.2 million and $2.2 million, respectively. At September 30, 2013, unrecognized stock-based compensation expense related to unvested options was $10.6 million, which is scheduled to be recognized over a weighted average period of 1.51 years.
	Restricted Stock Units
	The following table presents a summary of activity for RSUs (excluding RSUs that are subject to performance-based vesting conditions (“PSUs”):
		Number of RSUs		Weighted Average Grant Date Fair Value
	Balance, December 31, 2012	638,299		$	34.22
	Granted	1,426,695		32.64
	Vested	(226,328	)	32.66
	Forfeited	(68,893	)	32.66
	Balance, September 30, 2013	1,769,773		$	33.23
	During the nine months ended September 30, 2013, the Company granted 1,418,848 RSUs to certain officers and employees, which vest over four years following the vesting commencement date, and granted 7,847 RSUs to certain directors that vest quarterly through December 31, 2013. During the nine months ended September 30, 2012, the Company granted an aggregate of 318,525 RSUs to certain officers and employees, which vest over four years following the vesting commencement date and 16,003 RSUs to certain officers that were fully vested at the date of grant. In addition during such nine month period, the Company granted 12,234 RSUs to certain directors that vested in equal quarterly installments through December 31, 2012. At September 30, 2013, unrecognized stock-based compensation expense related to unvested RSUs was $29.2 million, which is scheduled to be recognized over a weighted average period of 1.54 years.
	Performance Stock Units
	The following table presents a summary of activity for PSUs:
		Number of PSUs		Weighted Average Grant Date Fair Value
	Balance, December 31, 2012	10,000		$	39.86
	Granted	382,500		28.72
	Vested	—		—
	Forfeited	—		—
	Balance, September 30, 2013	392,500		$	29
	During the nine months ended September 30, 2013, the Company granted 382,500 PSUs to certain officers, which vest over four years, subject to the satisfaction of performance conditions based upon the trading price of our common stock. During the nine months ended September 30, 2012, the Company granted 55,000 PSUs to certain officers subject to the recipients’ satisfying the performance criteria of the awards, of which 10,000 PSUs met the criteria and are scheduled to vest on December 31, 2013. At September 30, 2013, unrecognized stock-based compensation expense related to unvested PSUs was $5.7 million, which is scheduled to be recognized over a weighted average period of 1.56 years.
	Tax Benefits
	As of September 30, 2013, the balance of the Company’s additional paid-in capital pool related to tax windfall benefits from stock option exercises was $6.6 million.
	The Company applies a with-and-without approach in determining its intra-period allocation of tax expense or benefit attributable to stock-based compensation deductions. Tax deductions in excess of previously recorded benefits (windfalls) included in net operating loss carryforwards but not reflected in deferred tax assets were $62.1 million and $77.6 million at September 30, 2013 and December 31, 2012, respectively.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	In the normal course of business, the Company enters into contracts and agreements that may contain representations and warranties and provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves claims that may be made in the future, but have not yet been made. The Company has not paid any claims related to indemnification obligations to date.
	In accordance with its bylaws and certain agreements, the Company has indemnification obligations to its officers and directors for certain events or occurrences, subject to certain limits, while they are serving at the Company’s request in such capacity. There have been no claims to date under these indemnification obligations.
	In addition, the Company is involved in litigation incidental to the conduct of its business. The Company is not a party to any lawsuit or proceeding that, in the opinion of management, is reasonably possible to have a material adverse effect on its financial position, results of operations or cash flows.

Taxes

Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Taxes	'
	Taxes
	The Company’s provision for income taxes is determined using an estimate of its annual effective tax rate for each of its legal entities in accordance with the accounting guidance for income taxes. Where the Company has entities with losses and does not expect to realize the tax benefits in the foreseeable future, those entities are excluded from the effective tax calculation. Non-recurring and discrete items that impact tax expense are recorded in the period incurred.
	The effective tax rate was 34.0% and 41.2% for the nine months ended September 30, 2013 and 2012, respectively. Our provision for income taxes differs from the computed U.S. statutory rate due primarily to research and business credits and a valuation allowance in certain foreign jurisdictions. For the three and nine months ended September 30, 2013, the Company had a tax benefit of $0.7 million and $4.9 million, respectively. For the three and nine months ended September 30, 2012, the Company had an expense of $1.7 million and $5.0 million, respectively.
	As of September 30, 2013, the Company had U.S. net operating loss carryforwards of approximately $72.7 million, foreign net operating loss carryforwards of approximately $19.9 million and domestic and foreign research and experimentation tax credit carryforwards of $3.7 million. Certain net operating losses expire in 2014, although the Company expects to utilize them prior to their expiration. The earliest net operating loss with a deferred tax asset established expires in 2019. The utilization of domestic and foreign net operating loss and tax credit carryforwards may be subject to annual limitations due to ownership changes, including as a result of acquisitions, as provided by the local tax law. The Company has not recorded a deferred tax liability for undistributed earnings of $4.1 million of certain foreign subsidiaries, since such earnings are considered to be reinvested indefinitely. If the earnings were distributed, the Company would be subject to federal income and foreign withholding taxes. Determination of an unrecognized deferred income tax liability with respect to such earnings is not practicable.

Income_per_share_data

Income per share data	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Income per share data	'
	Income per share data
	Basic income per common share is computed based on the weighted average number of outstanding shares of common stock. Diluted income per common share adjusts the basic weighted average common shares outstanding for the potential dilution that could occur if stock options, RSUs and convertible securities were exercised or converted into common stock.
	The following table presents a reconciliation of the numerator and denominator of the basic and diluted earnings per share computation. In the table below, net (loss) income represents the numerator and weighted average common shares outstanding represent the denominator:
		Three Months Ended September 30,					Nine Months Ended
							September 30, 2013
		2013			2012		2013			2012
		(In thousands, except per share data)
	Net (loss) income	$	(4,054	)	$	3,140	$	(9,386	)	$	7,197
	Weighted average basic common shares outstanding	28,160			27,673		28,063			27,487
	Dilutive effect of stock-based awards	N/A			712		N/A			806
	Weighted average diluted common shares outstanding	28,160			28,385		28,063			28,293
	(Loss) earnings per share:
	Basic	$	(0.14	)	$	0.11	$	(0.33	)	$	0.26
	Diluted	$	(0.14	)	$	0.11	$	(0.33	)	$	0.25
	N/A – Not applicable because the effect was anti-dilutive given the Company’s losses during the period.
	Due to the cash settlement feature of the principal amount of the Notes, we only include the impact of the premium feature in our diluted earnings per common share calculation when the average stock price exceeds the conversion price of the Notes, which did not occur for the three and nine months ended September 30, 2013 and 2012.
	For the three and nine months ended September 30, 2013, share equivalents were not included in the computation of diluted earnings per share as the effect was anti-dilutive given the Company’s losses for these periods. For the three and nine months ended September 30, 2012, certain options to purchase common stock were not included in the computation of diluted earnings per share as their effect was anti-dilutive because their exercise prices exceeded the average market price of the Company’s common stock during the periods. The weighted average effect of potentially dilutive securities that have been excluded from the calculation of diluted net income per common share because the effect was anti-dilutive was 2,083,847 and 592,394 for the three months ended September 30, 2013 and 2012, respectively, and 1,738,002 and 501,263 for the nine months ended September 30, 2013 and 2012, respectively.

Segment_and_Geographic_Informa

Segment and Geographic Information	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment and Geographic Information	'
	Segment and Geographic Information
	Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker is its chief executive officer (the “CEO”). The CEO reviews financial information presented on a consolidated basis, along with information about revenue by geographic region for purposes of allocating resources and evaluating financial performance. Discrete information on a geographic basis, except for revenue, is not provided below the consolidated level to the CEO. The Company has concluded that it operates in one segment and has provided the required enterprise-wide disclosures.
	Revenue by geographic area is based on the location of the end-user carrier. The following tables present revenue and long-lived assets, net, by geographic area (in thousands):
		Three Months Ended September 30,				Nine Months Ended
						September 30, 2013
		2013		2012		2013		2012
	Revenue:
	United States	$	23,758	$	21,769	$	73,732	$	70,639
	EMEA	10,625		13,435		29,269		28,937
	APAC	5,970		2,983		16,290		11,514
	Other	2,547		1,987		7,243		7,943
	Total Revenue	$	42,900	$	40,174	$	126,534	$	119,033
		September 30, 2013		December 31, 2012
	Long-Lived Assets, net
	United States	$	26,968	$	19,289
	EMEA	1,159		496
	APAC	339		141
	Other	672		344
	Total Long-Lived Assets, net	$	29,138	$	20,270

Financial_Statement_Presentati1

Financial Statement Presentation (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Principles of Consolidation	'
	Principles of Consolidation
	The accompanying unaudited condensed consolidated financial statements include the accounts and results of operations of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in the accompanying unaudited condensed consolidated financial statements.
Interim Financial Presentation	'
	Interim Financial Presentation
	The accompanying unaudited condensed consolidated financial statements and footnotes have been prepared in accordance with Generally Accepted Accounting Principles in the United States of America (“U.S. GAAP”) as contained in the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification for interim financial information and Article 10 of Regulation S-X issued by the United States Securities and Exchange Commission (the “SEC”). Accordingly, they do not include all the information and footnotes required by U.S. GAAP for annual fiscal reporting periods. In the opinion of management, the interim financial information includes all adjustments of a normal recurring nature necessary for a fair presentation of the financial position, results of operations, comprehensive income, changes in stockholders’ equity and cash flows. The results of operations for the three and nine months ended September 30, 2013 are not necessarily indicative of results that may be expected for the year ending December 31, 2013 or any other period. The accompanying condensed consolidated financial statements are unaudited and should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Form 10-K for the fiscal year ended December 31, 2012 filed with the SEC on February 27, 2013.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual amounts could differ from these estimates.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In February 2013, FASB issued a new accounting standard requiring disclosure of items reclassified from other comprehensive income (loss) to net income. This guidance is effective for periods beginning after December 15, 2012 and early application is permitted. The adoption of this standard did not have a significant impact on the Company’s financial position, results of operations or cash flows.
	In March 2013, the FASB issued new accounting guidance clarifying the accounting for the release of cumulative translation adjustment into net income when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a nonprofit activity or a business within a foreign entity. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2013. The Company does not anticipate that the adoption of this standard will have a significant impact on the Company’s financial position, results of operations or cash flows.
	In July 2013, the FASB issued guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss or a tax credit carryforward exists. The guidance requires that an unrecognized tax benefit should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward. The guidance further requires that when a net operating loss carryforward, a similar tax loss or a tax credit carryforward is not available at the reporting date, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2013. The Company does not anticipate that the adoption of this standard will have a significant impact on the Company’s financial position.
Investments in Marketable Securities	'
	Investments in Marketable Securities
	Marketable securities that the Company does not intend to hold to maturity are classified as available-for-sale, are carried at fair value and are included on the Company’s balance sheet as either short-term or long-term investments depending on their maturity. Investments with original maturities greater than three months that mature less than one year from the consolidated balance sheet date are classified as short-term investments. Investments with maturities greater than one year from the consolidated balance sheet date are classified as long-term investments. Available-for-sale investments are marked-to-market at the end of each reporting period, with unrealized holding gains or losses, which represent temporary changes in the fair value of the investment, reflected in accumulated other comprehensive loss, a separate component of stockholders’ equity. The Company’s primary objective when investing excess cash is preservation of principal.
Fair Value Measurements	'
	The carrying amounts of the Company’s other financial instruments, accounts receivable, accounts payable and accrued expenses, approximate their respective fair values due to their short-term nature. (See Note 8 Borrowings for additional information on the fair value of debt.)
	The Company uses a three-tier fair value measurement hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The three tiers are defined as follows:
	•	Level 1. Observable inputs based on unadjusted quoted prices in active markets for identical instruments and include the Company’s investments in money market funds and certificates of deposit;
	•	Level 2. Inputs valued using quoted market prices for similar instruments, nonbinding market prices that are corroborated by observable market data and include the Company’s investments and marketable securities in U.S. agency notes, commercial paper and corporate bonds; and
	•	Level 3. Unobservable inputs for which there is little or no market data, which require the Company to develop its own assumptions.
	Assets Measured at Fair Value on a Recurring Basis
	The Company evaluates its financial assets subject to fair value measurements on a recurring basis to determine the appropriate level of classification for each reporting period. This determination requires significant judgments to be made. There were no transfers between classification levels during the periods.
Revenue Recognition	'
	Deferred revenue represents amounts billed to or collected from customers for which the related revenue has not been recognized because one or more of the revenue recognition criteria have not been met.

Investments_and_Fair_Value_Dis1

Investments and Fair Value Disclosures (Tables)	9 Months Ended
	Sep. 30, 2013
Text Block [Abstract]	'
Summary of Long-Term Investments	'
	The following table summarizes the Company’s investments:
		30-Sep-13
		Contracted Maturity		Carrying Value
				(in thousands)
	Money market funds	demand		$	60,825
	Total cash equivalents			$	60,825
	U.S. agency notes	31 - 337 days		$	38,640
	Commercial paper	2 - 123 days		7,997
	Corporate bonds	38 - 287 days		31,967
	Total short-term investments			$	78,604
	U.S. agency notes	421 - 627 days		$	13,014
	Corporate bonds	366 - 564 days		17,820
	Total long-term investments			$	30,834
Summary of Carrying and Fair Value of Company's Financial Assets	'
	The following table summarizes the carrying and fair value of the Company’s financial assets (in thousands):
		September 30, 2013						December 31, 2012
		Carrying Value				Fair Value		Carrying Value		Fair Value
	Assets
	Cash equivalents and certificates of deposit*	$	61,407			$	61,407	$	63,795	$	63,795
	Short and long-term investments	109,438				109,438		103,177		103,177
	Total assets	$	170,845			$	170,845	$	166,972	$	166,972
	* Includes $0.6 million of restricted cash as of September 30, 2013 and December 31, 2012 and excludes $18.2 million and $27.4 million of operating cash balances as of September 30, 2013 and December 31, 2012, respectively.
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis	'
	The following tables summarize the values (in thousands):
		September 30, 2013				Level 1		Level 2		Level 3
	Money market funds	$	60,825			$	60,825	—		—
	Certificates of deposit	582				582		—		—
	Total cash equivalents and certificates of deposit*	61,407				61,407		—		—
	U.S. agency notes	51,654				—		51,654		—
	Commercial paper	7,997				—		7,997		—
	Corporate bonds	49,787				—		49,787		—
	Total investments	109,438				—		109,438		—
	Total cash equivalents, certificates of deposit and investments	$	170,845			$	61,407	$	109,438	$	—
		December 31, 2012				Level 1		Level 2		Level 3
	Money market funds	$	63,189			$	63,189	—		—
	Certificates of deposit	606				606		—		—
	Total cash equivalents and certificates of deposit*	63,795				63,795		—		—
	U.S. agency notes	43,767				—		43,767		—
	Commercial paper	27,489				—		27,489		—
	Corporate bonds	31,921				—		31,921		—
	Total investments	103,177				—		103,177		—
	Total cash equivalents, certificates of deposit and investments	$	166,972			$	63,795	$	103,177	$	—

Acquisitions_Tables

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Estimated fair value of the assets acquired and liabilities assumed at the acquisition date	'
	The following table summarizes the estimated fair value of the assets acquired and liabilities assumed at the acquisition date of August 12, 2013 (in thousands):
	Cash and cash equivalents	$	216
	Accounts receivable	928
	Other current assets	475
	Property and equipment	311
	Trade name	310
	Customer relationships	6,663
	Developed technology	465
	Goodwill	18,526
	Deferred tax liability, net	(799		)
	Accounts payable and accrued expenses	(752		)
	Total consideration	$	26,343
Schedule of unaudited pro forma statement of operations	'
	This pro forma data is presented for information purposes only and does not purport to be indicative of the results of future operations or of the results that would have occurred had the acquisition taken place on January 1, 2012.
		Three Months Ended September 30,					Nine Months Ending September 30,
		2013			2012		2013			2012
		(In thousands except per share data)
	Revenue	$	43,471		$	41,477	$	130,015		$	122,662
	Net (loss) income	(3,515		)	2,971		(8,945		)	6,157
	Net (loss) income per common share, basic	$	(0.12	)	$	0.11	$	(0.32	)	$	0.22
	Net (loss) income per common share, diluted	$	(0.12	)	$	0.1	$	(0.32	)	$	0.22

Goodwill_Tables

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of the changes in the carrying value of goodwill	'
	The following table provides a summary of the changes in the carrying amounts of goodwill (in thousands):
	Balance as of December 31, 2012, gross	$	37,529
	Accumulated impairment loss	—
	Balance as of December 31, 2012, net	37,529
	Increase in goodwill related to acquisitions	20,667
	Other	1,254
	Balance as of September 30, 2013, gross	59,450
	Accumulated impairment loss	—
	Balance as of September 30, 2013, net	$	59,450

Deferred_Revenue_Tables

Deferred Revenue (Tables)	9 Months Ended
	Sep. 30, 2013
Revenue Recognition [Abstract]	'
Schedule of Deferred Revenue	'
	Deferred revenue consisted of the following (in thousands):
		September 30,		December 31,
		2013		2012
	License software	$	14,515	$	18,375
	Subscription and maintenance support	33,579		35,701
	Professional services and other	9,592		7,073
	Total	$	57,686	$	61,149
	Current portion	$	52,214	$	49,368
	Non-current portion	5,472		11,781
	Total	$	57,686	$	61,149

Borrowings_Tables

Borrowings (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Summary of Company's Financial Statements	'
	The following table shows the amounts recorded within the Company’s financial statements with respect to the Notes (in thousands):
		September 30, 2013			December 31, 2012
	Convertible debt principal	$	120,000		$	120,000
	Unamortized debt discount	(29,766		)	(33,549		)
	Net carrying amount of convertible debt	$	90,234		$	86,451
Summary of Interest Expense Recognized	'
	The following table presents the interest expense recognized related to the Notes (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Contractual interest expense	$	450		$	450		$	1,350	$	1,350
	Amortization of debt issuance costs	101			102			304		304
	Accretion of debt discount	1,281			1,185			3,784		3,497
	Net interest expense	$	1,832		$	1,737		$	5,438	$	5,151
Aggregate Maturities of Borrowings	'
	The aggregate maturities of borrowings as of September 30, 2013 were as follows (in thousands):
	2013 - 2016		$	—
	2017 and thereafter		120,000
			$	120,000

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of Stock-based Compensation Expense Recognized by Company	'
	Stock-based compensation expense recognized by the Company was as follows (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Stock options	$	2,020		$	1,506		$	6,463	$	4,568
	Restricted stock units	7,534			1,750			20,706		5,640
	Performance stock units	1,411			70			3,553		90
	Total recognized stock-based compensation expense	$	10,965		$	3,326		$	30,722	$	10,298
Summary of Information Related to Stock Options	'
	The following table presents summary information related to stock options:
		Number of Options Outstanding		Weighted Average Exercise Price			Weighted Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
									(in thousands)
	Balance, December 31, 2012	1,474,346		$	23.5
	Granted	481,905
	Exercised	(168,774	)
	Forfeited	(72,578	)
	Balance, September 30, 2013	1,714,899		$	27.42		8.17		$17,171
	Vested at September 30, 2013	657,522		$	17.54		6.83		$12,978
	Exercisable at September 30, 2013	657,522		$	17.54		6.83		$12,978
Summary of Activity for RSUs (Excluding RSUs that are Subject to Performance-Based Vesting Conditions)	'
	The following table presents a summary of activity for RSUs (excluding RSUs that are subject to performance-based vesting conditions (“PSUs”):
		Number of RSUs		Weighted Average Grant Date Fair Value
	Balance, December 31, 2012	638,299		$	34.22
	Granted	1,426,695		32.64
	Vested	(226,328	)	32.66
	Forfeited	(68,893	)	32.66
	Balance, September 30, 2013	1,769,773		$	33.23
Summary of Activity for PSUs	'
	The following table presents a summary of activity for PSUs:
		Number of PSUs		Weighted Average Grant Date Fair Value
	Balance, December 31, 2012	10,000		$	39.86
	Granted	382,500		28.72
	Vested	—		—
	Forfeited	—		—
	Balance, September 30, 2013	392,500		$	29

Income_per_share_data_Tables

Income per share data (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Summary of Reconciliation of Numerator and Denominator of Earnings per Share Computation	'
	The following table presents a reconciliation of the numerator and denominator of the basic and diluted earnings per share computation. In the table below, net (loss) income represents the numerator and weighted average common shares outstanding represent the denominator:
		Three Months Ended September 30,					Nine Months Ended
							September 30, 2013
		2013			2012		2013			2012
		(In thousands, except per share data)
	Net (loss) income	$	(4,054	)	$	3,140	$	(9,386	)	$	7,197
	Weighted average basic common shares outstanding	28,160			27,673		28,063			27,487
	Dilutive effect of stock-based awards	N/A			712		N/A			806
	Weighted average diluted common shares outstanding	28,160			28,385		28,063			28,293
	(Loss) earnings per share:
	Basic	$	(0.14	)	$	0.11	$	(0.33	)	$	0.26
	Diluted	$	(0.14	)	$	0.11	$	(0.33	)	$	0.25
	N/A – Not applicable because the effect was anti-dilutive given the Company’s losses during the period.

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Summary of Revenue and Long-Lived Assets, Net, by Geographic Area	'
	Revenue by geographic area is based on the location of the end-user carrier. The following tables present revenue and long-lived assets, net, by geographic area (in thousands):
		Three Months Ended September 30,				Nine Months Ended
						September 30, 2013
		2013		2012		2013		2012
	Revenue:
	United States	$	23,758	$	21,769	$	73,732	$	70,639
	EMEA	10,625		13,435		29,269		28,937
	APAC	5,970		2,983		16,290		11,514
	Other	2,547		1,987		7,243		7,943
	Total Revenue	$	42,900	$	40,174	$	126,534	$	119,033
		September 30, 2013		December 31, 2012
	Long-Lived Assets, net
	United States	$	26,968	$	19,289
	EMEA	1,159		496
	APAC	339		141
	Other	672		344
	Total Long-Lived Assets, net	$	29,138	$	20,270

Investments_and_Fair_Value_Dis2

Investments and Fair Value Disclosures - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Short-term investment maturity term, minimum (in months)	'3 months
Short-term investment maturity term, maximum (in years)	'1 year
Short-term investment maturity period description	'Investments with original maturities greater than three months that mature less than one year from the consolidated balance sheet date are classified as short-term investments
Maturity period of long-term investments	'Greater than one year

Investments_and_Fair_Value_Dis3

Investments and Fair Value Disclosures - Summary of Long-Term Investments (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified			Money market funds	U.S. agency notes	Commercial paper	Corporate bonds
Schedule Of Investments In Marketable Securities [Line Items]	'	'	'	'	'	'
Contracted Maturity of cash and cash equivalents	'	'	'demand	'	'	'
Contracted Maturity of short-term investments (in days)	'	'	'	'31 - 337 days	'2 - 123 days	'38 - 287 days
Contracted Maturity of long-term investments (in days)	'	'	'	'421 - 627 days	'	'366 - 564 days
Total cash equivalents, Carrying Value	$60,825	'	$60,825	'	'	'
Total short-term investments, Carrying Value	78,604	73,075	'	38,640	7,997	31,967
Total long-term investments, Carrying Value	$30,834	$30,102	'	$13,014	'	$17,820

Investments_and_Fair_Value_Dis4

Investments and Fair Value Disclosures - Summary of Carrying and Fair Value of Company's Financial Assets (Detail) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'		'
Cash equivalents and certificates of deposit, Carrying Value	$61,407	[1]	$63,795	[1]
Short and long-term investments, Carrying Value	109,438		103,177
Total assets, Carrying Value	170,845		166,972
Cash equivalents and certificates of deposit, Fair Value	61,407	[1]	63,795	[1]
Short and long-term investments, Fair Value	109,438		103,177
Total assets, Fair value	$170,845		$166,972
[1]	Includes $0.6 million of restricted cash as of September 30, 2013 and December 31, 2012 and excludes $18.2 million and $27.4 million of operating cash balances as of September 30, 2013 and December 31, 2012, respectively.

Investments_and_Fair_Value_Dis5

Investments and Fair Value Disclosures - Summary of Carrying and Fair Value of Company's Financial Assets (Parenthetical) (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]	'	'
Restricted Cash and Cash Equivalents	$0.60	$0.60
Cash equivalents and certificates of deposit not included in operating cash	$18.20	$27.40

Investments_and_Fair_Value_Dis6

Investments and Fair Value Disclosures - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Sep. 30, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	$61,407	[1]	$63,795	[1]
Total investments	109,438		103,177
Total cash equivalents, certificates of deposit and investments	170,845		166,972
Fair Value, Measurements, Recurring	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	61,407	[1]	63,795	[1]
Total investments	109,438		103,177
Total cash equivalents, certificates of deposit and investments	170,845		166,972
Fair Value, Measurements, Recurring | Money market funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	60,825		63,189
Fair Value, Measurements, Recurring | Certificates of deposit	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	582		606
Fair Value, Measurements, Recurring | U.S. agency notes	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	51,654		43,767
Fair Value, Measurements, Recurring | Commercial paper	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	7,997		27,489
Fair Value, Measurements, Recurring | Corporate bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	49,787		31,921
Level 1 | Fair Value, Measurements, Recurring	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	61,407	[1]	63,795	[1]
Total investments	0		0
Total cash equivalents, certificates of deposit and investments	61,407		63,795
Level 1 | Fair Value, Measurements, Recurring | Money market funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	60,825		63,189
Level 1 | Fair Value, Measurements, Recurring | Certificates of deposit	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	582		606
Level 1 | Fair Value, Measurements, Recurring | U.S. agency notes	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	0		0
Level 1 | Fair Value, Measurements, Recurring | Commercial paper	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	0		0
Level 1 | Fair Value, Measurements, Recurring | Corporate bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	0		0
Level 2 | Fair Value, Measurements, Recurring	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	0	[1]	0	[1]
Total investments	109,438		103,177
Total cash equivalents, certificates of deposit and investments	109,438		103,177
Level 2 | Fair Value, Measurements, Recurring | Money market funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	0		0
Level 2 | Fair Value, Measurements, Recurring | Certificates of deposit	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	0		0
Level 2 | Fair Value, Measurements, Recurring | U.S. agency notes	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	51,654		43,767
Level 2 | Fair Value, Measurements, Recurring | Commercial paper	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	7,997		27,489
Level 2 | Fair Value, Measurements, Recurring | Corporate bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	49,787		31,921
Level 3 | Fair Value, Measurements, Recurring	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	'	[1]	'	[1]
Total investments	'		'
Total cash equivalents, certificates of deposit and investments	'		'
Level 3 | Fair Value, Measurements, Recurring | Money market funds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	'		'
Level 3 | Fair Value, Measurements, Recurring | Certificates of deposit	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total cash equivalents and certificates of deposit	'		'
Level 3 | Fair Value, Measurements, Recurring | U.S. agency notes	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	'		'
Level 3 | Fair Value, Measurements, Recurring | Commercial paper	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	'		'
Level 3 | Fair Value, Measurements, Recurring | Corporate bonds	'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'		'
Total investments	'		'
[1]	Includes $0.6 million of restricted cash as of September 30, 2013 and December 31, 2012 and excludes $18.2 million and $27.4 million of operating cash balances as of September 30, 2013 and December 31, 2012, respectively.

Acquisitions_Additional_inform

Acquisitions - Additional information (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Aug. 12, 2013	Sep. 30, 2013	Aug. 12, 2013	Aug. 12, 2013	Aug. 12, 2013
			Hosted IP Communications (Europe) Ltd.	Hosted IP Communications (Europe) Ltd.	Trade names	Customer relationships	Technology
					Hosted IP Communications (Europe) Ltd.	Hosted IP Communications (Europe) Ltd.	Hosted IP Communications (Europe) Ltd.
Business Acquisition [Line Items]	'	'	'	'	'	'	'
Weighted average useful life (years)	'	'	'6 years	'	'1 year	'7 years	'2 years
Total cash consideration paid	'	'	$26,300,000	'	'	'	'
Transaction costs for financial advisory and legal services	'	'	500,000	'	'	'	'
Goodwill	59,450,000	37,529,000	18,526,000	'	'	'	'
Revenue	'	'	'	900,000	'	'	'
Net loss	'	'	'	$100,000	'	'	'

Acquisitions_Fair_Value_of_the

Acquisitions - Fair Value of the Assets Acquired and Liabilities Assumed (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Aug. 12, 2013	Aug. 12, 2013	Aug. 12, 2013	Aug. 12, 2013
In Thousands, unless otherwise specified			Hosted IP Communications (Europe) Ltd.	Trade names	Customer relationships	Technology
				Hosted IP Communications (Europe) Ltd.	Hosted IP Communications (Europe) Ltd.	Hosted IP Communications (Europe) Ltd.
Business Acquisition [Line Items]	'	'	'	'	'	'
Cash and cash equivalents	'	'	$216	'	'	'
Accounts receivable	'	'	928	'	'	'
Other current assets	'	'	475	'	'	'
Property and equipment	'	'	311	'	'	'
Intangible assets	'	'	'	310	6,663	465
Goodwill	59,450	37,529	18,526	'	'	'
Deferred tax liability, net	'	'	-799	'	'	'
Accounts payable and accrued expenses	'	'	-752	'	'	'
Total consideration	'	'	$26,343	'	'	'

Acquisitions_Acquisitions_Pro_

Acquisitions Acquisitions - Pro Forma Statement of Operations (Details) (Hosted IP Communications (Europe) Ltd., USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Hosted IP Communications (Europe) Ltd.	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Revenue	$43,471	$41,477	$130,015	$122,662
Net (loss) income	($3,515)	$2,971	($8,945)	$6,157
Net (loss) income per common share, basic (in dollars per share)	($0.12)	$0.11	($0.32)	$0.22
Net (loss) income per common share, diluted (in dollars per share)	($0.12)	$0.10	($0.32)	$0.22

Goodwill_Carrying_Amounts_Deta

Goodwill -Carrying Amounts (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Changes in the carrying amounts of goodwill	'	'
Balance at beginning of period, gross	$37,529	'
Accumulated impairment loss	0	0
Balance at end of period, gross	59,450	'
Balance at beginning of period, net	37,529	'
Increase in goodwill related to acquisitions	20,667	'
Other	1,254	'
Balance at end of period, net	$59,450	'

Goodwill_Goodwill_Additional_I

Goodwill Goodwill - Additional Information (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Aug. 12, 2013	Aug. 12, 2013
In Thousands, unless otherwise specified			Hosted IP Communications (Europe) Ltd.	Conferencing Software Company
Goodwill [Line Items]	'	'	'	'
Goodwill	$59,450	$37,529	$18,526	$2,100

Deferred_Revenue_Additional_In

Deferred Revenue - Additional Information (Detail) (Maximum)	9 Months Ended
	Sep. 30, 2013
Maximum	'
Deferred Revenue Arrangement [Line Items]	'
Recognition period for current portion of deferred revenue (in months)	'12 months

Deferred_Revenue_Schedule_of_D

Deferred Revenue - Schedule of Deferred Revenue (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	$57,686	$61,149
Current portion	52,214	49,368
Non-current portion	5,472	11,781
Total	57,686	61,149
License software	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	14,515	18,375
Total	14,515	18,375
Subscription and maintenance support	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	33,579	35,701
Total	33,579	35,701
Professional services and other	'	'
Deferred Revenue Arrangement [Line Items]	'	'
Deferred revenue	9,592	7,073
Total	$9,592	$7,073

Software_Licenses_Additional_I

Software Licenses - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended		12 Months Ended
In Millions, unless otherwise specified	31-May-12	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2011
		License
Business Combinations [Abstract]	'	'	'	'
Number of third-party software licenses	'	35,000,000	'	'
Software licenses, period (in years)	'	'4 years	'	'
Amount distributed for licenses	'	$6.40	'	'
Amortized cost of revenue, period (in years)	'3 years 6 months	'	'	'
Additional cost for amortized cost of revenue	'	'	'	10.2
Extent of billed license revenue	'	'	'	460
Extent of billed license revenue, period (in years)	'	'	'	'4 years
Amortization expense related to agreements	'	'	$1.90	'

Borrowings_Additional_Informat

Borrowings - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Jun. 30, 2011
Debt Instrument [Line Items]	'	'	'
Aggregate principal amount issued	$120,000,000	$120,000,000	'
Convertible senior notes due	1-Jul-18	'	'
Conditions for conversion of notes	'(a) during the five business-day period after any ten consecutive trading-day period (the “measurement period”) in which the trading price per Note for each day of that measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the applicable conversion rate on each such day; (b) during any calendar quarter (and only during such quarter) after the calendar quarter ended June 30, 2012, if the last reported sale price of the common stock for 20 or more trading days in a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter exceeds 130% of the applicable conversion price in effect on the last trading day of the immediately preceding calendar quarter; (c) upon the occurrence of specified corporate events; or (d) if the Company calls the Notes for redemption	'	'
Percentage of interest rate estimated	8.00%	'	'
Initial fair value of the liability component	79,400,000	'	'
Carrying amount of equity component of the Notes	29,766,000	33,549,000	'
Convertible Senior Notes	'	'	'
Debt Instrument [Line Items]	'	'	'
Aggregate principal amount issued	'	'	120,000,000
Coupon rate of notes (as a percent)	1.50%	'	'
Number of business days in conversion condition	'5 days	'	'
Number of consecutive trading days in condition	'10 days	'	'
Measurement period adjustment against product (as a percent)	98.00%	'	'
Number of trading days in condition	'20 or more trading days	'	'
Number of consecutive trading days in condition	'30 days	'	'
Percentage of applicable conversion price	130.00%	'	'
Initial conversion rate for the Notes	23.8126	'	'
Principal amount of Notes	1,000	'	'
Conversion price of Notes (in dollars per share)	$41.99	'	'
Percentage of principal amount of the Notes being repurchased	100.00%	'	'
Conditions for redemption of notes	'Company may redeem for cash all or part of the Notes (except for the Notes that the Company is required to repurchase as described above) if the last reported sale price of the common stock exceeds 140% of the applicable conversion price for 20 or more trading days in a period of 30 consecutive trading days ending on the trading day immediately prior to the date of the redemption notice	'	'
Percentage of applicable conversion price under redemption	140.00%	'	'
Number of trading days under redemption	'20 or more trading days	'	'
Number of consecutive trading days under redemption	'30 days	'	'
Amount allocated to the embedded conversion option	40,600,000	'	'
Offering costs	4,300,000	'	'
Offering costs classified as debt issuance costs	2,900,000	'	'
Fair value of the Notes	133,200,000	135,800,000	'
Carrying amount of equity component of the Notes	29,800,000	'	'
Unamortized offering costs	1,900,000	'	'
Offering costs allocated to equity component	1,400,000	'	'
Installment Loan	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	3.00%	'	'
Number of installment loans	5	'	'
Aggregate balance of loans	$1,000,000	'	'

Borrowings_Summary_of_Companys

Borrowings - Summary of Company's Financial Statements (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
Convertible debt principal	$120,000	$120,000
Unamortized debt discount	-29,766	-33,549
Net carrying amount of convertible debt	$90,234	$86,451

Borrowings_Summary_of_Interest

Borrowings - Summary of Interest Expense Recognized (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Debt Disclosure [Abstract]	'	'	'	'
Contractual interest expense	$450	$450	$1,350	$1,350
Amortization of debt issuance costs	101	102	304	304
Accretion of debt discount	1,281	1,185	3,784	3,497
Net interest expense	$1,832	$1,737	$5,438	$5,151

Borrowings_Aggregate_Maturitie

Borrowings - Aggregate Maturities of Borrowings (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'
2013	$0
2014	0
2015	0
2016	0
2017, and thereafter	120,000
Total	$120,000

Stockbased_Compensation_Additi

Stock-based Compensation - Additional Information (Detail) (USD $)

9 Months Ended

12 Months Ended

9 Months Ended

9 Months Ended

In Millions, except Share data, unless otherwise specified

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2011

Restricted stock units

Restricted stock units

Restricted stock units

Restricted stock units

Restricted stock units

Restricted stock units

Performance stock units

Performance stock units

Performance stock units

Performance stock units

Stock Options

Stock Options

Equity Incentive Plan 2009

Equity Incentive Plan 2009

Equity Incentive Plan 2009

Officers and Employees

Officers and Employees

Officers

Directors

Directors

Officers

Officers

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional shares of common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,250,000

1,219,787

Shares available for future issuance

'

'

'

'

'

'

'

'

'

'

'

'

'

'

244,399

'

'

Number of stock options, granted

481,905

'

'

'

'

'

'

'

'

'

'

'

481,905

334,100

'

'

'

Intrinsic value of stock options exercised

'

'

'

'

'

'

'

'

'

'

'

'

$4.20

$19.90

'

'

'

Cash received from stock options exercised

'

'

'

'

'

'

'

'

'

'

'

'

1.2

2.2

'

'

'

Unrecognized stock-based compensation expense related to unvested options

'

'

29.2

'

'

'

'

'

5.7

'

'

'

10.6

'

'

'

'

Weighted average period of compensation expense to be recognized (in years)

'

'

'1 year 6 months 16 days

'

'

'

'

'

'1 year 6 months 23 days

'

'

'

'1 year 6 months 5 days

'

'

'

'

Number of restricted stock units granted

'

'

1,426,695

1,418,848

318,525

16,003

7,847

12,234

382,500

'

382,500

55,000

'

'

'

'

'

Vesting period (in years)

'

'

'

'4 years

'4 years

'

'

'

'4 years

'

'

'

'

'

'

'

'

PSUs scheduled to vest (in shares)

'

'

'

'

'

'

'

'

'

10,000

'

'

'

'

'

'

'

Additional paid-in capital pool related to tax windfall benefits from stock option exercises

6.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net operating loss carryforwards but not reflected in deferred tax assets

$62.10

$77.60

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stockbased_Compensation_Summar

Stock-based Compensation - Summary of Stock-based Compensation Expense Recognized by Company (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total recognized stock-based compensation expense	$10,965	$3,326	$30,722	$10,298
Stock options	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total recognized stock-based compensation expense	2,020	1,506	6,463	4,568
Restricted stock units	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total recognized stock-based compensation expense	7,534	1,750	20,706	5,640
Performance stock units	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Total recognized stock-based compensation expense	$1,411	$70	$3,553	$90

Stockbased_Compensation_Summar1

Stock-based Compensation - Summary of Information Related to Stock Options (Detail) (USD $)	9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013
Number of Options Outstanding (in shares)	'
Number of Options Outstanding, Beginning Balance	1,474,346
Number of Options Outstanding, Granted	481,905
Number of Options Outstanding, Exercised	-168,774
Number of Options Outstanding, Forfeited	-72,578
Number of Options Outstanding, Ending Balance	1,714,899
Number of Options Outstanding, Vested	657,522
Number of Options Outstanding, Exercisable	657,522
Weighted Average Exercise Price (in dollars per share)	'
Weighted Average Exercise Price, Beginning Balance	$23.50
Weighted Average Exercise Price, Ending Balance	$27.42
Weighted Average Exercise Price Vested, Ending Balance	$17.54
Weighted Average Exercise Price Exercisable, Ending Balance	$17.54
Weighted Average Remaining Contractual Term (years) and Aggregate Intrinsic Value	'
Weighted Average Remaining Contractual Term (years), Ending Balance	'8 years 2 months 1 day
Weighted Average Remaining Contractual Term (years), Vested, Ending Balance	'6 years 9 months 29 days
Weighted Average Remaining Contractual Term (years), Exercisable, Ending Balance	'6 years 9 months 29 days
Aggregate Intrinsic Value, Ending Balance	$17,171
Aggregate Intrinsic Value Vested, Ending Balance	12,978
Aggregate Intrinsic Value Exercisable, Ending Balance	$12,978

Stockbased_Compensation_Summar2

Stock-based Compensation - Summary of Activity for RSUs (Excluding RSUs that are Subject to Performance-Based Vesting Conditions) (Detail) (Restricted stock units, USD $)	9 Months Ended
	Sep. 30, 2013
Restricted stock units	'
Number of RSUs (in shares)	'
Number of Stock Units, Beginning balance	638,299
Number of Stock Units, Granted	1,426,695
Number of Stock Units, Vested	-226,328
Number of Stock Units, Forfeited	-68,893
Number of Stock Units, Ending balance	1,769,773
Weighted Average Grant Date Fair Value (in dollars per share)	'
Weighted Average Grant Date Fair Value, Beginning balance	$34.22
Weighted Average Grant Date Fair Value, Granted	$32.64
Weighted Average Grant Date Fair Value, Vested	$32.66
Weighted Average Grant Date Fair Value, Forfeited	$32.66
Weighted Average Grant Date Fair Value, Ending balance	$33.23

Stockbased_Compensation_Summar3

Stock-based Compensation - Summary of Activity for PSUs (Detail) (Performance stock units, USD $)	9 Months Ended
	Sep. 30, 2013
Performance stock units	'
Number of PSUs (in shares)	'
Number of Stock Units, Beginning balance	10,000
Number of Stock Units, Granted	382,500
Number of Stock Units, Vested	'
Number of Stock Units, Forfeited	'
Number of Stock Units, Ending balance	392,500
Weighted Average Grant Date Fair Value (in dollars per share)	'
Weighted Average Grant Date Fair Value, Beginning balance	$39.86
Weighted Average Grant Date Fair Value, Granted	$28.72
Weighted Average Grant Date Fair Value, Vested	'
Weighted Average Grant Date Fair Value, Forfeited	'
Weighted Average Grant Date Fair Value, Ending balance	$29

Taxes_Additional_Information_D

Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Loss Carryforwards [Line Items]	'	'	'	'
Effective income tax rate (as a percent)	'	'	34.00%	41.20%
(Benefit from) provision for income taxes	($749,000)	$1,709,000	($4,860,000)	$4,955,000
Research and experimentation tax credit carryforwards	3,700,000	'	3,700,000	'
Deferred tax liability for undistributed earnings	4,100,000	'	4,100,000	'
United States	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Operating loss carryforwards	72,700,000	'	72,700,000	'
Foreign	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Operating loss carryforwards	$19,900,000	'	$19,900,000	'

Income_per_share_data_Summary_

Income per share data - Summary of Reconciliation of Numerator and Denominator of Earnings per Share Computation (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share, Basic and Diluted [Abstract]	'	'	'	'
Net (loss) income	($4,054)	$3,140	($9,386)	$7,197
Weighted average basic common shares outstanding (in shares)	28,160	27,673	28,063	27,487
Dilutive effect of stock-based awards (in shares)	'	712	'	806
Weighted average diluted common shares outstanding (in shares)	28,160	28,385	28,063	28,293
(Loss) earnings per share: (in dollars per share)	'	'	'	'
Basic	($0.14)	$0.11	($0.33)	$0.26
Diluted	($0.14)	$0.11	($0.33)	$0.25

Income_per_share_data_Addition

Income per share data - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]	'	'	'	'
Weighted average effect of potentially dilutive securities excluded contribution	2,083,847	592,394	1,738,002	501,263

Segment_and_Geographic_Informa2

Segment and Geographic Information - Summary of Revenue and Long-Lived Assets, Net, by Geographic Area (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Revenue:	'	'	'	'	'
Total Revenue	$42,900	$40,174	$126,534	$119,033	'
Long-Lived Assets, net	'	'	'	'	'
Total Long-Lived Assets, net	29,138	'	29,138	'	20,270
United States	'	'	'	'	'
Revenue:	'	'	'	'	'
Total Revenue	23,758	21,769	73,732	70,639	'
Long-Lived Assets, net	'	'	'	'	'
Total Long-Lived Assets, net	26,968	'	26,968	'	19,289
EMEA	'	'	'	'	'
Revenue:	'	'	'	'	'
Total Revenue	10,625	13,435	29,269	28,937	'
Long-Lived Assets, net	'	'	'	'	'
Total Long-Lived Assets, net	1,159	'	1,159	'	496
APAC	'	'	'	'	'
Revenue:	'	'	'	'	'
Total Revenue	5,970	2,983	16,290	11,514	'
Long-Lived Assets, net	'	'	'	'	'
Total Long-Lived Assets, net	339	'	339	'	141
Other	'	'	'	'	'
Revenue:	'	'	'	'	'
Total Revenue	2,547	1,987	7,243	7,943	'
Long-Lived Assets, net	'	'	'	'	'
Total Long-Lived Assets, net	$672	'	$672	'	$344