Callidus Software (CALD) 10-Q 7 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document and Entity Information	'	'
Entity Registrant Name	'CALLIDUS SOFTWARE INC	'
Entity Central Index Key	'0001035748	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	45,958,386
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$29,022	$28,295
Short-term investments	5,315	7,866
Restricted Cash and Cash Equivalents, Current	2,996	0
Accounts receivable, net of allowances of $731 and $650 at March 31, 2014 and December 31, 2013, respectively	26,509	29,216
Deferred income taxes	210	0
Prepaid and other current assets	6,695	6,232
Total current assets	70,747	71,609
Property and equipment, net	14,545	11,351
Goodwill	32,791	31,207
Intangible assets, net	18,514	16,995
Deferred income taxes, noncurrent	556	405
Deposits and other noncurrent assets	2,700	2,626
Total assets	139,853	134,193
Current liabilities:	'	'
Accounts payable	3,228	2,987
Accrued payroll and related expenses	5,992	7,377
Accrued expenses	10,055	5,395
Deferred income taxes	1,159	1,159
Deferred revenue	46,769	46,222
Capital lease obligations	1,318	1,308
Total current liabilities	68,521	64,448
Deferred revenue, noncurrent	12,679	10,432
Deferred income taxes, noncurrent	205	155
Capital lease obligations, noncurrent	668	987
Convertible notes	14,197	14,197
Other noncurrent liabilities	1,829	1,921
Total liabilities	98,099	92,140
Commitments and contingencies (Note 7)	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.001 par value; 5,000 shares authorized; no shares issued or outstanding	'	'
Common stock, $0.001 par value; 100,000 shares authorized; 48,297 and 47,817 shares issued and 45,958 and 45,478 shares outstanding at March 31, 2014 and December 31, 2013, respectively	46	45
Additional paid-in capital	317,564	315,430
Treasury stock; 2,339 shares at March 31, 2014 and December 31, 2013	-14,430	-14,430
Accumulated other comprehensive income	198	165
Accumulated deficit	-261,624	-259,157
Total stockholders’ equity	41,754	42,053
Total liabilities and stockholders’ equity	$139,853	$134,193

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accounts receivable, allowances (in dollars)	$731	$650
Preferred stock, par value (in dollars per share)	$0.00	$0.00
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	48,297	47,817
Common stock, shares outstanding	45,958	45,478
Treasury stock, shares	2,339	2,339

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Revenue:	'	'
Recurring	$22,250	$19,624
Services and other	8,727	5,918
Total revenue	30,977	25,542
Cost of revenue:	'	'
Recurring	7,288	7,453
Services and other	5,110	5,222
Total cost of revenue	12,398	12,675
Gross profit	18,579	12,867
Operating expenses:	'	'
Sales and marketing	10,727	7,644
Research and development	4,873	4,429
General and administrative	5,086	5,186
Restructuring	0	1,243
Total operating expenses	20,686	18,502
Operating loss	-2,107	-5,635
Interest income and other income (expense), net	27	10
Interest expense	-237	-854
Loss before provision for income taxes	-2,317	-6,479
Provision for income taxes	150	124
Net loss	-2,467	-6,603
Net loss per share - basic and diluted	'	'
Net loss per share (in dollars per share)	($0.05)	($0.18)
Shares used in basic and diluted per share computation	45,944	37,139
Comprehensive loss	'	'
Net loss	-2,467	-6,603
Unrealized gains (loss) on available-for-sale securities	-2	5
Foreign currency translation adjustments	35	-50
Comprehensive loss	($2,434)	($6,648)

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net loss	($2,467)	($6,603)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:	'	'
Depreciation expense	1,152	987
Amortization of intangible assets	1,233	1,228
Provision for doubtful accounts	253	157
Stock-based compensation	2,292	2,591
Release of valuation allowance	-149	0
Amortization of convertible notes issuance cost	32	134
Net amortization on investments	8	26
Changes in operating assets and liabilities:	'	'
Accounts receivable	2,841	-4,354
Prepaid and other current assets	-463	-503
Other noncurrent assets	-107	-289
Accounts payable	332	-2,712
Accrued expenses	245	1,673
Accrued payroll and related expenses	-1,369	-510
Accrued restructuring	-167	284
Deferred revenue	2,114	5,067
Deferred income taxes	-311	39
Net cash provided by (used in) operating activities	5,469	-2,785
Cash flows from investing activities:	'	'
Purchases of investments	-1,209	-3,319
Proceeds from maturities and sale of investments	3,750	7,700
Purchases of property and equipment	-3,597	-604
Purchases of intangible assets	-112	-126
Acquisitions, net of cash acquired	-2,363	0
Net cash provided by (used in) investing activities	-3,531	3,651
Cash flows from financing activities:	'	'
Proceeds from issuance of common stock	1,190	1,002
Repurchase of common stock from employees for payment of taxes on vesting of restricted stock units	-1,347	-341
Payment of consideration related to acquisitions	-630	-3,078
Proceeds from term note financing, net of payment	2,996	0
Change in restricted cash	-2,996	0
Repayment of debt	-150	0
Payment of principal under capital leases	-309	-311
Net cash (used in) provided by financing activities	-1,246	-2,728
Effect of exchange rates on cash and cash equivalents	35	-40
Net increase (decrease) in cash and cash equivalents	727	-1,902
Cash and cash equivalents at beginning of period	28,295	16,400
Cash and cash equivalents at end of period	29,022	14,498
Supplemental disclosures of cash flow information:	'	'
Cash paid for interest on convertible debt	169	703
Cash paid for interest on capital leases	16	16
Non-cash financing of fixed assets acquired under capital lease	$0	$2,627

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Basis of Presentation and Summary of Accounting Policies
	All amounts included herein related to the condensed consolidated financial statements as of March 31, 2014 and the three months ended March 31, 2014 and 2013 are unaudited and should be read in conjunction with the audited consolidated financial statements and the notes thereto included in Callidus Software Inc.'s ("the Company") Annual Report on Form 10-K for the year ended December 31, 2013. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted pursuant to the Securities and Exchange Commission ("SEC") rules and regulations regarding interim financial statements.
	In the opinion of management, the accompanying condensed consolidated financial statements include all necessary adjustments for the fair presentation of the Company’s financial position, results of operations and cash flows. The results of operations for the interim periods presented are not necessarily indicative of the operating results to be expected for any subsequent interim period or for the full fiscal year ending December 31, 2014.
	The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, which include wholly-owned subsidiaries in Australia, Canada, Germany, Hong Kong, India, Japan, Malaysia, Mexico, New Zealand, Serbia, Singapore, and the United Kingdom. All intercompany transactions and balances have been eliminated upon consolidation.
	Use of Estimates
	Preparation of the condensed consolidated financial statements in conformity with GAAP and the rules and regulations of the SEC requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, the reported amounts of revenue and expenses during the reporting period and the accompanying notes. Estimates are used for, but not limited to, uncertain tax liabilities, allowances for doubtful accounts, the useful lives of fixed assets and intangible assets, goodwill and intangible asset impairments, stock-based compensation forfeiture rates, accrued liabilities, the allocation of the value of purchase consideration for business acquisitions, and other contingencies. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates such estimates and assumptions on an ongoing basis for continued reasonableness, using historical experience and other factors, including the current economic environment. Appropriate adjustments, if any, to the estimates used are made prospectively based upon such evaluation. Illiquid credit markets, volatile equity and foreign currency markets and declines in information technology spending by prospective customers have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ materially from those estimates. Changes in those estimates, if any, resulting from continuing changes in the economic environment, will be reflected in the condensed consolidated financial statements in future periods.
	Recent Accounting Pronouncements
	As of March 31, 2014, there were no recent accounting pronouncements that will significantly impact the Company's condensed consolidated financial statements upon adoption.

Restructuring

Restructuring	3 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring	'
	Restructuring
	Restructuring expenses primarily consist of costs associated with employee terminations and exit of excess facilities. These costs are recognized in accordance with the accounting guidance for exit activities and are presented as restructuring expenses in the Company's condensed consolidated statements of comprehensive loss. The Company incurred restructuring expense of zero and $1.2 million during the three months ended March 31, 2014 and 2013, respectively.
	The following table sets forth a summary of accrued restructuring expenses for the three months ended March 31, 2014 and 2013, respectively (in thousands):
		31-Dec-13		Cash			Additions		Adjustments			March 31, 2014
				Payments
	Severance and termination-related costs	$	141	$	(141	)	$	—	$	—		$	—
	Facilities-related costs	234		(26		)	—		—			208
	Total accrued restructuring expenses	$	375	$	(167	)	$	—	$	—		$	208
		31-Dec-12		Cash			Additions		Adjustments			31-Mar-13
				Payments
	Severance and termination-related costs	$	589	$	(949	)	$	1,251	$	(8	)	$	883
	Facilities-related costs	289		(10		)	—		—			279
	Total accrued restructuring expenses	$	878	$	(959	)	$	1,251	$	(8	)	$	1,162

Acquisitions

Acquisitions	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	Acquisitions
	LeadRocket, Inc.
	On February 4, 2014, the Company acquired all of the common stock of LeadRocket, Inc., (“LeadRocket”), a privately-held company providing marketing automation and demand generation solutions that enable both marketing and sales users to identify and connect with leads efficiently. The Company acquired LeadRocket to strengthen its social engagement and digital marketing platform. The purchase consideration was $3.0 million, which included $2.5 million paid in cash and $0.5 million as indemnity holdback payable upon the one year closing anniversary. As of March 31, 2014, $0.4 million of the indemnity holdback remains accrued for potential indemnification claims, and the timing and amount of any additional indemnification items under the holdback is unknown.
	The preliminary purchase price allocation for LeadRocket is summarized as follows (in thousands):
		Fair Value
	Net liabilities assumed	$	(1,075	)
	Intangible assets	2,640
	Goodwill	1,584
	Deferred tax liabilities	(149		)
	Total purchase price	$	3,000
	The excess of purchase consideration over the fair value of net tangible liabilities assumed and identifiable intangible assets acquired was recorded as goodwill. The fair values assigned to tangible and identifiable intangible assets acquired and liabilities assumed are based on management’s estimates and assumptions. The estimated fair values of assets acquired and liabilities assumed, specifically current and noncurrent income taxes payable and deferred taxes, may be subject to change as additional information is received and certain tax returns are finalized. Thus the provisional measurements of fair value set forth above are subject to change. The Company expects to finalize the valuation as soon as practicable, but not later than one-year from the acquisition date.
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of the LeadRocket acquisition (in thousands):
		Fair Value			Useful Life
	Developed technology	$	570		2-4 years
	Patents	1,060			10 years
	Domain name	850			5 years
	Customer Relationships	160			3 years
	Total intangible assets subject to amortization	$	2,640
	The goodwill balance is primarily attributed to the anticipated synergies from the acquisition and expanded market opportunities with respect to the integration of LeadRocket’s digital marketing platform with the Company’s other solutions. The goodwill balance is not deductible for U.S. income tax purposes.
	Pro forma results of operations for the LeadRocket acquisition have not been presented because the acquisition is not material.
	Goodwill
	Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Goodwill amounts are not amortized, but rather tested for impairment at least annually or as events occur or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount.
	As of March 31, 2014 and December 31, 2013, goodwill consisted of the following (in thousands):
	Balance as of December 31, 2013	$	31,207
	LeadRocket	1,584
	Balance as of March 31, 2014	$	32,791

Financial_Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2014
Financial Instruments	'
Financial Instruments	'
	Financial Instruments
	As of March 31, 2014 and December 31, 2013, all investment debt securities are classified as available-for-sale and carried at estimated fair value, which is determined based on the inputs discussed below.
	The Company classifies all highly liquid instruments with an original maturity on the date of purchase of three months or less as cash and cash equivalents.  The Company classifies available-for-sale securities that have a maturity date longer than three months as short-term investments, including those investments with a maturity date of longer than one year that are highly liquid and which the Company does not intend to hold to maturity.
	Realized gains and losses are calculated using the specific identification method. As of March 31, 2014 and December 31, 2013, the Company had no short-term investments in a material unrealized loss position.
	The components of the Company’s cash, cash equivalents, investments classified as available-for-sale and restricted cash were as follows at March 31, 2014 and December 31, 2013 (in thousands):
	31-Mar-14		Amortized			Gross		Gross			Other Than		Estimated
			Cost			Unrealized		Unrealized			Temporary		Fair value
						Gains		Losses			Impairment
	Cash		$	25,266		$	—	$	—		$	—	$	25,266
	Cash equivalents:
	Money market funds		2,256			—		—			—		2,256
	U.S. government and agency obligations		1,500			—		—			—		1,500
	Total cash equivalents		3,756			—		—			—		3,756
	Total cash and cash equivalents		$	29,022		$	—	$	—		$	—	$	29,022
	Short-term investments:
	U.S. government and agency obligations		4,108			1		—			—		4,109
	Corporate notes and obligations		1,208			—		(2		)	—		1,206
	Total short-term investments		$	5,316		$	1	$	(2	)	$	—	$	5,315
	Restricted cash		2,996			—		—			—		2,996
	December 31, 2013		Amortized			Gross		Gross			Other Than		Estimated
			Cost			Unrealized		Unrealized			Temporary		Fair value
						Gains		Losses			Impairment
	Cash		$	21,989		$	—	$	—		$	—	$	21,989
	Cash equivalents:
	Money market funds		6,306			—		—			—		6,306
	Total cash equivalents		6,306			—		—			—		6,306
	Total cash and cash equivalents		$	28,295		$	—	$	—		$	—	$	28,295
	Short-term investments:
	U.S. government and agency obligations		6,115			—		—			—		6,115
	Corporate notes and obligations		1,751			—		—			—		1,751
	Total short-term investments		$	7,866		$	—	$	—		$	—	$	7,866
	The market value and the amortized cost of available-for-sale debt securities by contractual maturities as of March 31, 2014 were as follows (in thousands):
	Contractual maturity	Amortized			Estimated
		Cost			Fair value
	Less than 1 year	$	5,608		$	5,609
	Between 1 and 2 years	1,208			1,206
	Total	$	6,816		$	6,815
	At March 31, 2014, the Company had no material unrealized losses on our short-term investments.
	The Company had no realized gains or losses on sales of its investments for the three months ended March 31, 2014 and 2013. The Company had proceeds, net of purchases of investments, of $2.5 million and $4.4 million from maturities and sales of investments during the three months ended March 31, 2014 and 2013, respectively.
	The short-term investments in government obligations or highly rated credit securities generally have minor to moderate fluctuations in the fair values from period to period. The Company monitors credit ratings, downgrades and significant events surrounding these securities so as to assess if any of the impairments will be considered other-than-temporary. The Company did not identify any government obligations or highly rated credit securities held as of March 31, 2014 or as of December 31, 2013 for which the fair value declined significantly below amortized cost and were considered other-than-temporary impairments.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	The Company measures financial assets at fair value on an ongoing basis. The estimated fair value of the Company’s financial assets was determined using the following inputs at March 31, 2014 (in thousands):
		Fair Value Measurements at Reporting Date Using
				Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
	31-Mar-14	Total		(Level 1)		(Level 2)		(Level 3)
	Assets:
	Money market funds (1)	$	2,256	$	2,256	$	—	$	—
	U.S. government and agency obligations (2)	5,609		—		5,609		—
	Corporate notes and obligations (2)	1,206		—		1,206		—
	Restricted cash (3)	2,996		2,996		—		—
	Total	$	12,067	$	5,252	$	6,815	$	—
	_____________________________________________________________________________
	(1) Included in cash and cash equivalents on the condensed consolidated balance sheet.
	(2) Included in short-term investments on the condensed consolidated balance sheet, except for $1.5 million of U.S. government and agency obligation with original maturities of less than 90 days, which was classified as cash equivalents.
	(3) Included in restricted cash on the condensed consolidated balance sheet.
	The estimated fair value of the Company’s financial assets was determined using the following inputs at December 31, 2013 (in thousands):
		Fair Value Measurements at Reporting Date Using
				Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
	December 31, 2013	Total		(Level 1)		(Level 2)		(Level 3)
	Assets:
	Money market funds (1)	$	6,306	$	6,306	$	—	$	—
	U.S. government and agency obligations (2)	6,115		—		6,115		—
	Corporate notes and obligations (2)	1,751		—		1,751		—
	Total	$	14,172	$	6,306	$	7,866	$	—
	_____________________________________________________________________________
	(1) Included in cash and cash equivalents on the consolidated balance sheet.
	(2) Included in short-term investments on the consolidated balance sheet.
	Valuation of Investments
	Level 1 and Level 2
	The Company’s available-for-sale securities include money market funds, corporate notes and obligations, and U.S. government and agency obligations. The Company values these securities using a pricing matrix from a pricing service provider, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs). The Company classifies all of its available-for-sale securities, except for money market funds, as having Level 2 inputs. The Company validates the estimated fair value of certain securities from a pricing service provider on a quarterly basis. The valuation techniques used to measure the fair value of the financial instruments having Level 2 inputs, all of which have counterparties with high credit ratings, were derived from the following: non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments or pricing models, such as discounted cash flow techniques, with all significant inputs derived from or corroborated by observable market data.
	Level 3
	As of March 31, 2014, the Company had no Level 3 instruments. The Company did not have any transfers between Level 1, Level 2 and Level 3 fair value measurements during the periods presented as there were no changes in the composition in Level 1, 2 or 3.

Convertible_Notes

Convertible Notes	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Convertible Notes	'
	Convertible Notes
	As of March 31, 2014, the Company had an aggregate principal amount of $14.2 million of the 4.75% Convertible Senior Notes (“Convertible Notes”) due in 2016 outstanding. Interest is payable on June 1 and December 1 of each year until the maturity date of June 1, 2016 unless the Convertible Notes are converted, redeemed or repurchased. The Convertible Notes are senior unsecured obligations of the Company. Based on market prices, the fair value of the Convertible Notes was $23.1 million and $20.3 million as of March 31, 2014 and December 31, 2013, respectively.
	The Convertible Notes contain an optional redemption feature, which allows the Company, any time on or after June 6, 2014, to redeem all or part of the Convertible Notes for cash if the last reported sale price per share of common stock (as described below) has been at least 130% of the conversion price then in effect for at least 20 trading days during any 30 consecutive trading-day period ending within five trading days prior to the date on which the Company provides notice of redemption. The redemption price would be 100% of the principal amount of the notes being redeemed, plus accrued and unpaid interest.
	Holders may convert the Convertible Notes into common stock of the Company at any time at a conversion rate of 129.6596 shares of common stock per $1,000 principal amount, or approximately $7.71 per share, subject to certain adjustments. If holders convert their notes in connection with a “make-whole fundamental change,” such holders are entitled, under certain circumstances, to an increase in the conversion rate for notes surrendered. Upon conversion, the Company will satisfy its conversion obligations by delivering shares of the Company’s common stock.
	The Convertible Notes are recorded as long-term debt. The current balance of the debt issuance costs associated with the issuance of the Convertible Notes is recorded within prepaid and other current assets, and the non-current balance is recorded within deposits and other assets, and is being amortized to interest expense over the terms of the Convertible Notes. At March 31, 2014 and December 31, 2013, $0.1 million of the debt issuance costs are included in prepaid and other current assets, with the remaining amounts of $0.2 million, recorded in deposits and other assets.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Except as discussed below, there were no material changes in the Company's commitments under contractual obligations as disclosed in the Company’s audited consolidated financial statements for the year ended December 31, 2013.
	Term Note
	In January 2014, the Company entered into a term note agreement with the principal amount of $3.1 million payable over 5 years. The term note is fully collateralized with cash, classified as accrued expenses and the collateral as restricted cash. As of March 31, 2014, the outstanding liability was $3.0 million and management intends to settle the loan in full during 2014.
	Warranties and Indemnification
	The Company generally warrants that its software will perform to its standard documentation. Under the Company’s standard warranty, should a software product not perform as specified in the documentation within the warranty period, the Company will repair or replace the software or refund the license fee paid. To date, the Company has not incurred any incremental costs related to warranty obligations for its software.
	The Company’s product license and on-demand agreements typically include a limited indemnification provision for claims by third parties relating to the Company’s intellectual property. To date, the Company has not incurred material costs, and has not accrued any costs related to such indemnification provisions.
	Intellectual Property Litigation
	Versata Software, Inc. and Versata Development Group, Inc. v. Callidus Software, Inc. - Ongoing
	On July 19, 2012, Versata Software, Inc. and Versata Development Group, Inc. (collectively, “Versata”) filed suit against Callidus in the United States District Court for the District of Delaware (“Delaware District Court”). The suit asserted that the Company infringes U.S. Patent Nos. 7,904,326, 7,908,304 and 7,958,024. The Company believes that the claims are without merit and intends to vigorously defend against these claims. On May 30, 2013, the Company answered the complaint and filed a counterclaim against Versata in the Delaware District Court. The Company's counterclaim asserted that Versata infringes U.S. Patent Nos. 6,269,355, 6,850,924 and 6,473,748. On August 30, 2013, the Company filed petitions with the United States Patent and Trademark Office Patent Trial and Appeal Board (“PTAB”) for covered business method (“CBM”) patent review of U.S. Patent Nos. 7,904,326, 7,908,304 and 7,958,024, which Versata filed responses to on December 12, 2013. The Company also filed a motion with the Delaware District Court on August 30, 2013 to stay that litigation (“Motion to Stay”) pending completion of the patent review proceedings with the PTAB. On January 8, 2014, the Company was granted leave by the Delaware District Court to add Versata Inc. as a counterclaim defendant. On March 4, 2014, the PTAB instituted covered business method patent review of each of Versata’s patents, namely, U.S. Patent Nos. 7,904,326, 7,908,304 and 7,958,024, finding that it is more likely than not that the Company will prevail in establishing that the challenged claims are not patentable. After requesting that the PTAB reconsider its decision to institute, which was denied, Versata filed a petition for writ of mandamus with the Court of Appeals for the Federal Circuit on April 11, 2014 asking that Court to deny institution of CBM patent review by the PTAB; the Court of Appeals denied Versata's petition for writ of mandamus on May 5, 2014. On April 17, 2014, the Company filed additional petitions with the PTAB for CBM patent review to address all of the remaining claims not previously covered in the prior petitions with respect to U.S Patent Nos. 7,908,304 and 7,958,024. At this stage in the case, the Company is not in a position to assess whether any loss or adverse effect on the Company's financial condition is probable, or to estimate the range of potential loss, if any.
	Other Matters
	In addition to the above litigation matter, the Company is from time to time a party to other various litigation and customer disputes incidental to the conduct of its business. At the present time, the Company believes that none of these matters are likely to have a material adverse effect on the Company’s future financial results.
	The Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. The Company reviews the need for any such liability on a quarterly basis and records any necessary adjustments to reflect the effect of ongoing negotiations, contract disputes, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case in the period they become known. At March 31, 2014, the Company had not recorded any such liabilities in accordance with accounting for contingencies. However, litigation is subject to inherent uncertainties and the Company's view on these matters may change in the future.

Net_Loss_Per_Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Net Loss Per Share	'
	Net Loss Per Share
	Basic net loss per share is calculated by dividing net loss for the period by the weighted average common shares outstanding during the period. Diluted net loss per share is calculated by dividing the net loss for the period by the weighted average common shares outstanding, adjusted for all dilutive potential common shares, which includes shares issuable upon the conversion of the Convertible Notes, the exercise of outstanding common stock options, the release of restricted stock units, and purchases of shares pursuant to our employee stock purchase plan ("ESPP") to the extent these shares are dilutive. For the three months ended March 31, 2014 and 2013, the diluted net loss per share calculation was the same as the basic net loss per share calculation as all potential common shares were anti-dilutive.
	Diluted net loss per share does not include the effect of the following potential weighted average common shares because to do so would be anti-dilutive for the periods presented (in thousands):
		Three Months Ended March 31,
		2014	2013
	Restricted Stock Units	1,981	2,252
	Stock Options	1,903	2,798
	ESPP	2	28
	Convertible Notes	1,843	7,680
	Total	5,729	12,758
	The weighted average exercise price of stock options excluded for the three months ended March 31, 2014 and 2013 were $5.23 and $4.09, respectively.

Stockbased_Compensation

Stock-based Compensation	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-based Compensation	'
	Stock-based Compensation
	Expense Summary
	The table below sets forth a summary of stock-based compensation expense for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014			2013
	Stock Options	$	203		$	79
	Restricted Stock Units
	Performance Awards	392			127
	Service-based Awards	1,492			2,219
	ESPP	205			166
	Total Stock-based Compensation	$	2,292		$	2,591
	As of March 31, 2014, there was $2.4 million, $4.4 million, $12.4 million and $0.4 million of total unrecognized compensation expense related to stock options, performance awards, service-based awards and ESPP shares, respectively. The expenses related to stock options, performance awards, service-based awards and ESPP shares are expected to be recognized over a weighted average period of 3.1 years, 2.5 years, 2.0 years and 0.7 years, respectively.
	The table below sets forth the functional classification of stock-based compensation expense for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014			2013
	Cost of recurring revenue	$	182		$	174
	Cost of services and other revenue	214			406
	Sales and marketing	592			573
	Research and development	438			466
	General and administrative	866			972
	Total stock-based compensation	$	2,292		$	2,591
	Performance Awards
	During the three months ended March 31, 2014, the Company granted performance awards with vesting contingent on absolute SaaS revenue growth over the three year period from 2014 through 2016, and the Company’s relative total stockholder return over the three year period from 2014 through 2016 versus an index of 17 SaaS companies.
	During the three months ended March 31, 2013, the Company granted performance awards with vesting contingent on successful attainment of pre-set SaaS revenue growth and recurring revenue gross profit targets.
	Determination of Fair Value
	The fair value of service-based awards is estimated based on the market value of the Company’s stock on the date of grant. A portion of the performance awards granted during the three months ended March 31, 2014 are based on relative stockholder return and therefore, are subject to a market condition. As a result, the fair value of performance awards is calculated using a Monte Carlo simulation model that estimates the distribution of the potential outcomes of the grants of performance awards based on simulated future index of the peer companies.
	The fair value of each stock option is estimated on the date of grant using the Black-Scholes valuation model, however, no stock options were granted during the three months ended March 31, 2014 and 2013.
	The fair value of each ESPP share is estimated on the enrollment date of the offering period using the Black-Scholes valuation model and the assumptions noted in the following table.
		Three Months Ended March 31,
		2014		2013
	Employee Stock Purchase Plan
	Expected life (in years)	0.49 to 1.00		0.50 to 1.00
	Risk-free interest rate	0.08% to 0.12%		0.13% to 0.17%
	Volatility	47% to 50%		52% to 62%
	Dividend yield	None		None

Income_Taxes_Notes

Income Taxes (Notes)	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	Income Taxes
	Income tax expense for the three months ended March 31, 2014 was $0.2 million, compared to income tax expense of $0.1 million for the same period in 2013. The increase in tax expense for the three months ended March 31, 2014 was primarily due to withholding taxes in foreign jurisdictions, partially offset by the release of a portion of the valuation allowance associated with the acquisition of LeadRocket.

Segment_Geographic_and_Custome

Segment, Geographic and Customer Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment, Geographic and Customer Information	'
	Segment, Geographic and Customer Information
	The accounting principles guiding disclosures about segments of an enterprise and related information establishes standards for the reporting by business enterprises of information about operating segments, products and services, geographic areas, and major customers. The method of determining which information is reported is based on the way that management organizes the operating segments within the Company for making operational decisions and assessments of financial performance. The Company’s chief operating decision maker is considered to be the Company’s chief executive officer ("CEO"). The CEO reviews financial information presented on a consolidated basis for purposes of making operating decisions and assessing financial performance. By this definition, the Company operates in one business segment, which is the development, marketing and sale of sales and marketing effectiveness cloud software and related services.
	The following table summarizes revenue for the three months ended March 31, 2014 and 2013 by geographic areas (in thousands):
		Three Months Ended March 31,
		2014		2013
	United States	$	25,315	$	20,075
	EMEA	2,962		3,193
	Asia Pacific	1,326		1,059
	Other	1,374		1,215
		$	30,977	$	25,542
	Substantially all of the Company’s long-lived assets are located in the United States. Long-lived assets located outside the United States are not significant.
	During the three months ended March 31, 2014 and 2013, no customer accounted for more than 10% of total revenue.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Related-Party Transactions	'
	Related-Party Transactions
	In June 2013, in the normal course of business, the Company entered into agreements with Lithium Technologies, Inc. (“Lithium”), whose Chief Financial Officer is a member of the Company's Board of Directors. The Company purchased an annual subscription for Lithium's social media management solutions in the amount of $120,000. During the third quarter of 2013, the Company paid the entire annual fee of $120,000 for the social media management solution, of which $92,000 has been expensed and $28,000 remains in prepaid and other current assets as of March 31, 2014. Also in June 2013, Lithium entered into a two-year hosting agreement with the Company in the annual amount of $113,000. During the first quarter of 2014, the Company recognized $26,000 in revenue under the $113,000 annual hosting agreement.
	In the third quarter of 2013, the Company entered into an agreement with Lithium for services in the amount of $143,550, of which approximately $16,000 was recognized in revenue for the first quarter of 2014.
	In the first quarter of 2014, the Company entered into another agreement with Lithium for services in the amount of $30,000, of which approximately $22,000 was recognized in revenue during the quarter.
	Webcom, Inc., a wholly-owned subsidiary of the Company, engages the services of a third-party vendor to perform product modeling and maintenance of certain equipment. The third-party vendor is owned by a relative of Webcom’s senior management. For the three months ended March 31, 2014 and 2013, the Company paid approximately $50,000 and $36,000, respectively, to this vendor.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation and Summary of Accounting Policies	'
	Basis of Presentation and Summary of Accounting Policies
	All amounts included herein related to the condensed consolidated financial statements as of March 31, 2014 and the three months ended March 31, 2014 and 2013 are unaudited and should be read in conjunction with the audited consolidated financial statements and the notes thereto included in Callidus Software Inc.'s ("the Company") Annual Report on Form 10-K for the year ended December 31, 2013. Certain information and footnote disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") have been condensed or omitted pursuant to the Securities and Exchange Commission ("SEC") rules and regulations regarding interim financial statements.
	In the opinion of management, the accompanying condensed consolidated financial statements include all necessary adjustments for the fair presentation of the Company’s financial position, results of operations and cash flows. The results of operations for the interim periods presented are not necessarily indicative of the operating results to be expected for any subsequent interim period or for the full fiscal year ending December 31, 2014.
	The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, which include wholly-owned subsidiaries in Australia, Canada, Germany, Hong Kong, India, Japan, Malaysia, Mexico, New Zealand, Serbia, Singapore, and the United Kingdom. All intercompany transactions and balances have been eliminated upon consolidation.
Use of Estimates	'
	Use of Estimates
	Preparation of the condensed consolidated financial statements in conformity with GAAP and the rules and regulations of the SEC requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, the reported amounts of revenue and expenses during the reporting period and the accompanying notes. Estimates are used for, but not limited to, uncertain tax liabilities, allowances for doubtful accounts, the useful lives of fixed assets and intangible assets, goodwill and intangible asset impairments, stock-based compensation forfeiture rates, accrued liabilities, the allocation of the value of purchase consideration for business acquisitions, and other contingencies. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates such estimates and assumptions on an ongoing basis for continued reasonableness, using historical experience and other factors, including the current economic environment. Appropriate adjustments, if any, to the estimates used are made prospectively based upon such evaluation. Illiquid credit markets, volatile equity and foreign currency markets and declines in information technology spending by prospective customers have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ materially from those estimates. Changes in those estimates, if any, resulting from continuing changes in the economic environment, will be reflected in the condensed consolidated financial statements in future periods.
Recently Adopted Accounting Pronouncements	'
	Recent Accounting Pronouncements
	As of March 31, 2014, there were no recent accounting pronouncements that will significantly impact the Company's condensed consolidated financial statements upon adoption.

Restructuring_Tables

Restructuring (Tables)	3 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
Summary of accrued restructuring expenses	'
	The following table sets forth a summary of accrued restructuring expenses for the three months ended March 31, 2014 and 2013, respectively (in thousands):
		31-Dec-13		Cash			Additions		Adjustments			March 31, 2014
				Payments
	Severance and termination-related costs	$	141	$	(141	)	$	—	$	—		$	—
	Facilities-related costs	234		(26		)	—		—			208
	Total accrued restructuring expenses	$	375	$	(167	)	$	—	$	—		$	208
		31-Dec-12		Cash			Additions		Adjustments			31-Mar-13
				Payments
	Severance and termination-related costs	$	589	$	(949	)	$	1,251	$	(8	)	$	883
	Facilities-related costs	289		(10		)	—		—			279
	Total accrued restructuring expenses	$	878	$	(959	)	$	1,251	$	(8	)	$	1,162

Acquisitions_Acquisitions_Tabl

Acquisitions Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2014
Business Acquisition [Line Items]	'
Schedule of Goodwill [Table Text Block]	'
	As of March 31, 2014 and December 31, 2013, goodwill consisted of the following (in thousands):
	Balance as of December 31, 2013	$	31,207
	LeadRocket	1,584
	Balance as of March 31, 2014	$	32,791
LeadRocket [Member]	'
Business Acquisition [Line Items]	'
Schedule of Purchase Price Allocation	'
	The preliminary purchase price allocation for LeadRocket is summarized as follows (in thousands):
		Fair Value
	Net liabilities assumed	$	(1,075	)
	Intangible assets	2,640
	Goodwill	1,584
	Deferred tax liabilities	(149		)
	Total purchase price	$	3,000
Schedule of intangible assets	'
	The following table sets forth the components of identifiable intangible assets acquired and their estimated useful lives as of the date of the LeadRocket acquisition (in thousands):
		Fair Value			Useful Life
	Developed technology	$	570		2-4 years
	Patents	1,060			10 years
	Domain name	850			5 years
	Customer Relationships	160			3 years
	Total intangible assets subject to amortization	$	2,640

Financial_Instruments_Tables

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Financial Instruments	'
Summary of cash, cash equivalents and investments classified as available-for-sale	'
	The components of the Company’s cash, cash equivalents, investments classified as available-for-sale and restricted cash were as follows at March 31, 2014 and December 31, 2013 (in thousands):
	31-Mar-14		Amortized			Gross		Gross			Other Than		Estimated
			Cost			Unrealized		Unrealized			Temporary		Fair value
						Gains		Losses			Impairment
	Cash		$	25,266		$	—	$	—		$	—	$	25,266
	Cash equivalents:
	Money market funds		2,256			—		—			—		2,256
	U.S. government and agency obligations		1,500			—		—			—		1,500
	Total cash equivalents		3,756			—		—			—		3,756
	Total cash and cash equivalents		$	29,022		$	—	$	—		$	—	$	29,022
	Short-term investments:
	U.S. government and agency obligations		4,108			1		—			—		4,109
	Corporate notes and obligations		1,208			—		(2		)	—		1,206
	Total short-term investments		$	5,316		$	1	$	(2	)	$	—	$	5,315
	Restricted cash		2,996			—		—			—		2,996
	December 31, 2013		Amortized			Gross		Gross			Other Than		Estimated
			Cost			Unrealized		Unrealized			Temporary		Fair value
						Gains		Losses			Impairment
	Cash		$	21,989		$	—	$	—		$	—	$	21,989
	Cash equivalents:
	Money market funds		6,306			—		—			—		6,306
	Total cash equivalents		6,306			—		—			—		6,306
	Total cash and cash equivalents		$	28,295		$	—	$	—		$	—	$	28,295
	Short-term investments:
	U.S. government and agency obligations		6,115			—		—			—		6,115
	Corporate notes and obligations		1,751			—		—			—		1,751
	Total short-term investments		$	7,866		$	—	$	—		$	—	$	7,866
Schedule of contractual maturities of available-for-sale debt securities	'
	The market value and the amortized cost of available-for-sale debt securities by contractual maturities as of March 31, 2014 were as follows (in thousands):
	Contractual maturity	Amortized			Estimated
		Cost			Fair value
	Less than 1 year	$	5,608		$	5,609
	Between 1 and 2 years	1,208			1,206
	Total	$	6,816		$	6,815

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	'
	The estimated fair value of the Company’s financial assets was determined using the following inputs at March 31, 2014 (in thousands):
		Fair Value Measurements at Reporting Date Using
				Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
	31-Mar-14	Total		(Level 1)		(Level 2)		(Level 3)
	Assets:
	Money market funds (1)	$	2,256	$	2,256	$	—	$	—
	U.S. government and agency obligations (2)	5,609		—		5,609		—
	Corporate notes and obligations (2)	1,206		—		1,206		—
	Restricted cash (3)	2,996		2,996		—		—
	Total	$	12,067	$	5,252	$	6,815	$	—
	_____________________________________________________________________________
	(1) Included in cash and cash equivalents on the condensed consolidated balance sheet.
	(2) Included in short-term investments on the condensed consolidated balance sheet, except for $1.5 million of U.S. government and agency obligation with original maturities of less than 90 days, which was classified as cash equivalents.
	(3) Included in restricted cash on the condensed consolidated balance sheet.
	The estimated fair value of the Company’s financial assets was determined using the following inputs at December 31, 2013 (in thousands):
		Fair Value Measurements at Reporting Date Using
				Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
	December 31, 2013	Total		(Level 1)		(Level 2)		(Level 3)
	Assets:
	Money market funds (1)	$	6,306	$	6,306	$	—	$	—
	U.S. government and agency obligations (2)	6,115		—		6,115		—
	Corporate notes and obligations (2)	1,751		—		1,751		—
	Total	$	14,172	$	6,306	$	7,866	$	—
	_____________________________________________________________________________
	(1) Included in cash and cash equivalents on the consolidated balance sheet.
	(2) Included in short-term investments on the consolidated balance sheet.

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of potential weighted average common shares excluded from computation of diluted net loss per share	'
	Diluted net loss per share does not include the effect of the following potential weighted average common shares because to do so would be anti-dilutive for the periods presented (in thousands):
		Three Months Ended March 31,
		2014	2013
	Restricted Stock Units	1,981	2,252
	Stock Options	1,903	2,798
	ESPP	2	28
	Convertible Notes	1,843	7,680
	Total	5,729	12,758

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of stock-based compensation expenses	'
	The table below sets forth a summary of stock-based compensation expense for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014			2013
	Stock Options	$	203		$	79
	Restricted Stock Units
	Performance Awards	392			127
	Service-based Awards	1,492			2,219
	ESPP	205			166
	Total Stock-based Compensation	$	2,292		$	2,591
Schedule of functional classification of stock-based compensation expense	'
	The table below sets forth the functional classification of stock-based compensation expense for the three months ended March 31, 2014 and 2013 (in thousands):
		Three Months Ended March 31,
		2014			2013
	Cost of recurring revenue	$	182		$	174
	Cost of services and other revenue	214			406
	Sales and marketing	592			573
	Research and development	438			466
	General and administrative	866			972
	Total stock-based compensation	$	2,292		$	2,591
Schedule of valuation assumptions for determining the fair value of stock options and employee stock purchase plans	'
	The fair value of each stock option is estimated on the date of grant using the Black-Scholes valuation model, however, no stock options were granted during the three months ended March 31, 2014 and 2013.
	The fair value of each ESPP share is estimated on the enrollment date of the offering period using the Black-Scholes valuation model and the assumptions noted in the following table.
		Three Months Ended March 31,
		2014		2013
	Employee Stock Purchase Plan
	Expected life (in years)	0.49 to 1.00		0.50 to 1.00
	Risk-free interest rate	0.08% to 0.12%		0.13% to 0.17%
	Volatility	47% to 50%		52% to 62%
	Dividend yield	None		None

Segment_Geographic_and_Custome1

Segment, Geographic and Customer Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Summary of revenues by geographic areas	'
	The following table summarizes revenue for the three months ended March 31, 2014 and 2013 by geographic areas (in thousands):
		Three Months Ended March 31,
		2014		2013
	United States	$	25,315	$	20,075
	EMEA	2,962		3,193
	Asia Pacific	1,326		1,059
	Other	1,374		1,215
		$	30,977	$	25,542

Restructuring_Details

Restructuring (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Restructuring and Related Activities [Abstract]	'	'
Restructuring expenses	$0	$1,243
Changes in restructuring reserve	'	'
Balance at the beginning of the period	375	878
Cash Payments	-167	-959
Additions	0	1,251
Adjustments	0	8
Balance at the end of the period	208	1,162
Severance and termination-related costs	'	'
Changes in restructuring reserve	'	'
Balance at the beginning of the period	141	589
Cash Payments	-141	-949
Additions	0	1,251
Adjustments	0	8
Balance at the end of the period	0	883
Facilities related costs	'	'
Changes in restructuring reserve	'	'
Balance at the beginning of the period	234	289
Cash Payments	-26	-10
Additions	0	0
Adjustments	0	0
Balance at the end of the period	$208	$279

Acquisitions_Details

Acquisitions (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Feb. 04, 2014

Mar. 31, 2013

Feb. 04, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Feb. 04, 2014

Mar. 31, 2014

Feb. 04, 2014

Mar. 31, 2014

Feb. 04, 2014

LeadRocket, Inc.

LeadRocket, Inc.

Developed technology

Developed technology

Developed technology

Patents

Patents

Domain name

Domain name

Customer Relationships

Customer Relationships

LeadRocket, Inc.

Minimum

Maximum

LeadRocket, Inc.

LeadRocket, Inc.

LeadRocket, Inc.

LeadRocket, Inc.

LeadRocket, Inc.

LeadRocket, Inc.

LeadRocket, Inc.

LeadRocket, Inc.

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

$32,791,000

$31,207,000

'

'

'

'

'

'

'

'

'

'

'

Cash paid for the acquisition

'

'

2,500,000

'

'

'

'

'

'

'

'

'

'

Indemnity holdback

'

'

500,000

'

'

'

'

'

'

'

'

'

'

Purchase Consideration

'

'

3,000,000

'

'

'

'

'

'

'

'

'

'

Indemnity holdback accrued

'

'

'

400,000

'

'

'

'

'

'

'

'

'

Net liabilities assumed

'

'

-1,075,000

'

'

'

'

'

'

'

'

'

'

Intangible assets

'

'

2,640,000

'

570,000

'

'

'

1,060,000

'

850,000

'

160,000

Goodwill

'

'

1,584,000

'

'

'

'

'

'

'

'

'

'

Deferred tax liabilities

'

'

($149,000)

'

'

'

'

'

'

'

'

'

'

Estimated useful life

'

'

'

'

'

'2 years

'4 years

'10 years

'

'5 years

'

'3 years

'

Financial_Instruments_Details

Financial Instruments (Details) (USD $)

3 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Cash

Cash

Cash equivalents

Cash equivalents

Money market funds

Money market funds

Cash and cash equivalents

Cash and cash equivalents

Short-term investments

Short-term investments

U.S. government and agency obligations

U.S. government and agency obligations

Corporate notes and obligations

Corporate notes and obligations

Restricted cash [Member]

Cash equivalents

U.S. government and agency obligations

Financial instruments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Material unrealized loss

'

'

'

'

'

'

'

'

'

'

'

'

$0

'

'

'

'

'

'

'

Proceeds from Sale and Maturity of Available-for-sale Securities

2,500,000

4,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash and cash equivalents

29,022,000

14,498,000

28,295,000

16,400,000

25,266,000

21,989,000

3,756,000

6,306,000

2,256,000

6,306,000

29,022,000

28,295,000

'

'

'

'

'

'

2,996,000

'

Amortized Cost

'

'

'

'

'

'

'

'

'

'

'

'

5,316,000

7,866,000

4,108,000

6,115,000

1,208,000

1,751,000

'

1,500,000

Gross Unrealized Gains

'

'

'

'

0

0

0

0

0

0

0

0

1,000

0

1,000

0

0

0

0

0

Gross Unrealized Losses

'

'

'

'

0

0

0

0

0

0

0

0

2,000

0

0

0

2,000

0

0

0

Other Than Temporary Impairment

'

'

'

'

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Estimated Fair Value, Cash and Cash Equivalents

'

'

'

'

25,266,000

21,989,000

3,756,000

6,306,000

2,256,000

6,306,000

29,022,000

28,295,000

'

'

'

'

'

'

2,996,000

'

Estimated FV, Available for Sale Securities

'

'

'

'

'

'

'

'

'

'

'

'

$5,315,000

$7,866,000

$4,109,000

$6,115,000

$1,206,000

$1,751,000

'

$1,500,000

Financial_Instruments_Details_

Financial Instruments (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Contractual maturity, Amortized Cost	'	'
Less than 1 year	$5,608,000	'
Between 1 and 2 years	1,208,000	'
Total	6,816,000	'
Contractual maturity, Estimated Fair value	'	'
Less than 1 year	5,609,000	'
Between 1 and 2 years	1,206,000	'
Total	6,815,000	'
Other disclosures pertaining to available-for-sale securities	'	'
Short-term investments in a material unrealized loss position with maturities of greater than 12 months	0	'
Realized gains or losses on sales of investments	0	'
Proceeds from Sale and Maturity of Available-for-sale Securities	$2,500,000	$4,400,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (Ongoing basis, USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Total	'		'
Assets:	'		'
Assets, Fair Value Disclosure	$12,067		$14,172
Total | Money market funds	'		'
Assets:	'		'
Assets, Fair Value Disclosure	2,256	[1]	6,306	[2]
Total | U.S. government and agency obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	5,609	[3]	6,115	[4]
Total | Corporate notes and obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	1,206	[3]	1,751	[4]
Total | Restricted cash [Member]	'		'
Assets:	'		'
Assets, Fair Value Disclosure	2,996	[5]	'
Quoted Prices in Active Markets for Identical Assets (Level 1)	'		'
Assets:	'		'
Assets, Fair Value Disclosure	5,252		6,306
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds	'		'
Assets:	'		'
Assets, Fair Value Disclosure	2,256	[1]	6,306	[2]
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government and agency obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[3]	0	[4]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate notes and obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[3]	0	[4]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Restricted cash [Member]	'		'
Assets:	'		'
Assets, Fair Value Disclosure	2,996	[5]	'
Significant Other Observable Inputs (Level 2)	'		'
Assets:	'		'
Assets, Fair Value Disclosure	6,815		7,866
Significant Other Observable Inputs (Level 2) | Money market funds	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[1]	0	[2]
Significant Other Observable Inputs (Level 2) | U.S. government and agency obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	5,609	[3]	6,115	[4]
Significant Other Observable Inputs (Level 2) | Corporate notes and obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	1,206	[3]	1,751	[4]
Significant Other Observable Inputs (Level 2) | Restricted cash [Member]	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[5]	'
Significant Unobservable Inputs (Level 3)	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0		0
Significant Unobservable Inputs (Level 3) | Money market funds	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[1]	0	[2]
Significant Unobservable Inputs (Level 3) | U.S. government and agency obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[3]	0	[4]
Significant Unobservable Inputs (Level 3) | Corporate notes and obligations	'		'
Assets:	'		'
Assets, Fair Value Disclosure	0	[3]	0	[4]
Significant Unobservable Inputs (Level 3) | Restricted cash [Member]	'		'
Assets:	'		'
Assets, Fair Value Disclosure	$0	[5]	'
[1]	Included in cash and cash equivalents on the condensed consolidated balance sheet.
[2]	Included in cash and cash equivalents on the consolidated balance sheet.
[3]	Included in short-term investments on the condensed consolidated balance sheet, except for $1.5 million of U.S. government and agency obligation with original maturities of less than 90 days, which was classified as cash equivalents.
[4]	Included in short-term investments on the consolidated balance sheet.
[5]	Included in restricted cash on the condensed consolidated balance sheet.

Convertible_Notes_Details

Convertible Notes (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014
			Convertible Notes Payable [Member]	Convertible Notes Payable [Member]	Convertible notes
Convertible Notes	'	'	'	'	'
Aggregate principal amount of debt outstanding	$14,197,000	$14,197,000	'	'	'
Debt Conversion, Converted Instrument, Amount	'	'	45,000,000	'	'
Debt Conversion, Converted Instrument, Shares Issued	'	'	5,837,015	'	'
Accrued interest paid upon debt conversion	'	'	300,000	'	'
Cash and stock premium paid upon debt conversion	'	'	4,800,000	'	'
Reclassification of deferred debt issuance cost to additional paid-in capital	'	'	1,000,000	'	'
Convertible Senior Notes due 2016, interest rate (as a percent)	'	'	'	4.75%	'
Fair value	23,100,000	20,300,000	'	'	'
Percentage of the conversion price that the closing price of the entity's common stock must exceed in order for the notes to be convertible	'	'	'	'	130.00%
Number of days within 30 consecutive trading days in which the closing price of the entity's common stock must exceed the conversion price for the notes to be redeemable	'	'	'	'	'20 days
Number of consecutive trading days during which the closing price of the entity's common stock must exceed the conversion price for at least 20 days in order for the notes to be redeemable	'	'	'	'	'30 days
Number of trading days prior to the date on which the entity provides notice of redemption	'	'	'	'	'5 days
Redemption price as percentage of principal amount of notes, plus accrued and unpaid interest	'	'	'	'	100.00%
Conversion rate of common stock per $1000 of principal amount of convertible notes (in shares)	'	'	'	'	129.6596
Principal amount used for computation of conversion ratio	'	'	'	'	1,000
Conversion price (in dollars per share)	'	'	'	'	$7.71
Convertible debt issuance costs, current portion	'	'	'	'	100,000
Debt issuance costs, recorded in deposits and other assets	'	'	'	'	$200,000

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (Term note [Member], USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Term note [Member]	'
Contractual cash obligations	'
Long-term Debt, Gross	$3.10
Long-term Debt	$3

Net_Loss_Per_Share_Details

Net Loss Per Share (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net Loss Per Share	'	'
Anti-dilutive securities excluded from computation of diluted net loss per share (in shares)	5,729	12,758
Restricted stock	'	'
Net Loss Per Share	'	'
Anti-dilutive securities excluded from computation of diluted net loss per share (in shares)	1,981	2,252
Stock options	'	'
Net Loss Per Share	'	'
Anti-dilutive securities excluded from computation of diluted net loss per share (in shares)	1,903	2,798
Weighted average exercise price (in dollars per share)	5.23	4.09
ESPP	'	'
Net Loss Per Share	'	'
Anti-dilutive securities excluded from computation of diluted net loss per share (in shares)	2	28
Convertible notes	'	'
Net Loss Per Share	'	'
Anti-dilutive securities excluded from computation of diluted net loss per share (in shares)	1,843	7,680

Stockbased_Compensation_Detail

Stock-based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Stock-based compensation	'	'
Stock-based compensation expense	$2,292,000	$2,591,000
Stock Options	'	'
Stock-based compensation	'	'
Stock-based compensation expense	203,000	79,000
Unrecognized compensation expense, stock options	2,400,000	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'3 years 1 month 24 days	'
Performance Awards	'	'
Stock-based compensation	'	'
Stock-based compensation expense	392,000	127,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	4,400,000	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'2 years 6 months 14 days	'
Service-based Awards	'	'
Stock-based compensation	'	'
Stock-based compensation expense	1,492,000	2,219,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	12,400,000	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'2 years 0 months 4 days	'
ESPP	'	'
Stock-based compensation	'	'
Stock-based compensation expense	205,000	166,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	$400,000	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'7 months 27 days	'

Stockbased_Compensation_Detail1

Stock-based Compensation (Details 2) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Classification of stock-based compensation expense	'	'
Stock-based compensation expense	$2,292,000	$2,591,000
Cost of recurring revenues	'	'
Classification of stock-based compensation expense	'	'
Stock-based compensation expense	182,000	174,000
Cost of services and other revenues	'	'
Classification of stock-based compensation expense	'	'
Stock-based compensation expense	214,000	406,000
Sales and marketing	'	'
Classification of stock-based compensation expense	'	'
Stock-based compensation expense	592,000	573,000
Research and development	'	'
Classification of stock-based compensation expense	'	'
Stock-based compensation expense	438,000	466,000
General and administrative	'	'
Classification of stock-based compensation expense	'	'
Stock-based compensation expense	866,000	972,000
Performance Awards	'	'
Classification of stock-based compensation expense	'	'
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	4,400,000	'
Stock-based compensation expense	$392,000	$127,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	'2 years 6 months 14 days	'

Stockbased_Compensation_Detail2

Stock-based Compensation (Details 3)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
ESPP	'	'
Fair value assumptions using the Black-Scholes-Merton valuation model	'	'
Dividend Yield (as a percent)	0.00%	'
ESPP | Minimum	'	'
Fair value assumptions using the Black-Scholes-Merton valuation model	'	'
Expected life (in years)	'5 months 26 days	'6 months
Risk-free interest rate, minimum (as a percent)	0.08%	0.13%
Volatility, minimum (as a percent)	47.00%	52.00%
ESPP | Maximum	'	'
Fair value assumptions using the Black-Scholes-Merton valuation model	'	'
Expected life (in years)	'1 year	'1 year
Risk-free interest rate, maximum (as a percent)	0.12%	0.17%
Volatility, maximum (as a percent)	50.00%	62.00%
Stock options | Maximum	'	'
Fair value assumptions using the Black-Scholes-Merton valuation model	'	'
Volatility, maximum (as a percent)	62.00%	0.00%

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Provision for income taxes	$150	$124

Segment_Geographic_and_Custome2

Segment, Geographic and Customer Information (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
	customer	customer
	segment
Segment Reporting [Abstract]	'	'
Number of operating segments	1	'
Revenues by geographic area	'	'
Revenues	$30,977	$25,542
Number of customers accounted for more than 10% of total revenues	0	0
United States	'	'
Revenues by geographic area	'	'
Revenues	25,315	20,075
EMEA	'	'
Revenues by geographic area	'	'
Revenues	2,962	3,193
Asia Pacific	'	'
Revenues by geographic area	'	'
Revenues	1,326	1,059
Other	'	'
Revenues by geographic area	'	'
Revenues	$1,374	$1,215

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended	1 Months Ended		3 Months Ended	1 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Mar. 31, 2014	Jun. 30, 2013	Jun. 30, 2013	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2014	Mar. 31, 2014
	Webcom	Webcom	Subscription Arrangement [Member]	Subscription Arrangement [Member]	Hosting Agreement [Member]	Service Agreements [Member]	Service Agreements [Member]	Service Agreement SOW2 [Member]	Service Agreement SOW2 [Member]	Prepaid And Other Current Assets [Member]
			Lithium [Member]	Lithium [Member]	Lithium [Member]	Lithium [Member]	Lithium [Member]	Lithium [Member]	Lithium [Member]	Subscription Arrangement [Member]
										Lithium [Member]
Related party transactions	'	'	'	'	'	'	'	'	'	'
Amount under related party transaction agreement	'	'	$120,000	'	'	'	'	'	'	'
Related party transaction amount	'	'	'	'	113,000	143,550	'	30,000	'	28,000
Amount expensed in period from related party transaction	'	'	'	92,000	'	'	'	'	'	'
Revenue recongnized in related party transaction	'	'	'	'	26,000	'	16,000	'	22,000	'
Product modeling and maintenance of certain equipment	$50,000	$36,000	'	'	'	'	'	'	'	'