Vocera Communications (VCRA) 10-Q 6 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	4-May-15
Document and Entity Information [Abstract]
Entity Registrant Name	VOCERA COMMUNICATIONS, INC.
Entity Central Index Key	1129260
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		25,726,818

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets
Cash and cash equivalents	$24,257	$22,615
Short-term investments	91,217	93,646
Accounts receivable, net of allowance	14,103	18,008
Other receivables	1,342	694
Inventories	2,696	3,462
Prepaid expenses and other current assets	2,711	2,017
Total current assets	136,326	140,442
Property and equipment, net	4,723	5,122
Intangible assets, net	2,991	3,171
Goodwill	9,988	9,988
Other long-term assets	787	905
Total assets	154,815	159,628
Current liabilities
Accounts payable	3,408	1,913
Accrued payroll and other current liabilities	8,006	10,863
Deferred revenue, current	27,205	28,474
Total current liabilities	38,619	41,250
Deferred revenue, long-term	6,767	6,974
Other long-term liabilities	1,600	1,692
Total liabilities	46,986	49,916
Commitments and contingencies (Note 7)
Stockholders' equity
Preferred stock, $0.0003 par value - 5,000,000 shares authorized as of December 31, 2014 and December 31, 2013; zero shares issued and outstanding	0	0
Common stock, $0.0003 par value - 100,000,000 shares authorized as of March 31, 2015 and December 31, 2014; 25,697,578 and 25,644,010 shares issued and outstanding as of March 31, 2015 and December 31, 2014, respectively	8	8
Additional paid-in capital	205,069	202,515
Accumulated other comprehensive loss	-28	-81
Accumulated deficit	-97,220	-92,730
Total stockholders’ equity	107,829	109,712
Total liabilities and stockholders’ equity	$154,815	$159,628

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets Condensed Consolidated Balance Sheets (Paranthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Liabilities and stockholders' equity
Common stock par value	$0.00	$0.00
Common stock shares authorized	100,000,000	100,000,000
Common stock shares issued	25,697,578	25,644,010
Common stock shares outstanding	25,697,578	25,644,010
Preferred Stock
Liabilities and stockholders' equity
Preferred stock par value	$0.00	$0.00
Preferred stock shares authorized	5,000,000	5,000,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenue
Product	$12,462	$14,189
Service	11,356	10,487
Total revenue	23,818	24,676
Cost of revenue
Product	4,432	4,990
Service	4,851	4,814
Total cost of revenue	9,283	9,804
Gross profit	14,535	14,872
Operating expenses
Research and development	4,483	4,066
Sales and marketing	10,414	12,743
General and administrative	4,000	4,397
Total operating expenses	18,897	21,206
Loss from operations	-4,362	-6,334
Interest income	110	87
Other expense, net	-132	-65
Loss before income taxes	-4,384	-6,312
Provision for income taxes	-103	-77
Net loss	($4,487)	($6,389)
Net loss per share
Basic and Diluted	($0.17)	($0.26)
Weighted average shares used to compute net loss per share
Basic and Diluted	25,667	25,047

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net loss	($4,487)	($6,389)
Other comprehensive loss, net:
Change in unrealized (loss) gain on investments, net of tax	53	-23
Comprehensive loss	($4,434)	($6,412)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Cash Flows [Abstract]
Other Operating Activities, Cash Flow Statement	$144	$106
Cash flows from operating activities
Net loss	4,487	6,389
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	845	734
Inventory provision	95	15
Change in lease-related performance liabilities	-266	-106
Stock-based compensation expense	2,594	2,598
Changes in operating assets and liabilities:
Accounts receivable	3,760	3,571
Other receivables	-647	81
Inventories	672	311
Prepaid expenses and other assets	-616	-750
Accounts payable	1,475	-881
Accrued payroll and other liabilities	-2,813	-987
Deferred revenue	-1,477	-974
Net cash used in operating activities	-721	-2,671
Cash flows from investing activities
Purchase of property and equipment	-264	-264
Business acquisitions, net of cash acquired	0	-3,500
Purchase of short-term investments	-33,408	-41,318
Maturities of short-term investments	35,887	33,005
Proceeds from Sale of Available-for-sale Securities	0	-446
Changes in Restricted Cash	40	0
Net cash used in investing activities	2,255	-11,631
Cash flows from financing activities
Cash from lease-related performance obligations	170	307
Payment for repurchase of early exercised options	0	-11
Proceeds from exercise of stock options	105	433
Tax withholdings paid on behalf of employees for net share settlement	-167	-167
Net cash provided by financing activities	108	562
Net decrease in cash and cash equivalents	1,642	-13,740
Cash and cash equivalents at beginning of period	22,615	39,652
Cash and cash equivalents at end of period	24,257	25,912
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment in accounts payable and accrued liabilities	$122	$63

The_Company_and_Summary_of_Sig

The Company and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
The Company and Summary of Significant Accounting Policies	The Company and Summary of Significant Accounting Policies
	Organization and Business
	Vocera Communications, Inc. (the “Company” or "Vocera") is a provider of secure, integrated, intelligent communication solutions, focused on empowering mobile workers in healthcare, hospitality, energy, and other mission-critical mobile work environments, in the United States and internationally. The significant majority of the Company's business is currently generated from sales of its solutions in the healthcare market to help its customers improve patient safety and experience, and increase operational efficiency. As of March 31, 2015 the Company's solutions have been installed in more than 1,300 facilities worldwide.
	The Vocera Communication System, which includes an intelligent enterprise software platform, a lightweight, wearable, voice-controlled communication badge, and smartphone applications, enables users to connect instantly with other staff simply by saying the name, function or group name of the desired recipient. It also securely delivers text messages and alerts directly to and from smartphones, replacing legacy pagers. Other software applications help improve care coordination, patient safety, and patient satisfaction.
	Basis of Presentation
	The Company’s unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and pursuant to the instructions to Form 10-Q and Article 10 of Regulation S-X of the U.S. Securities and Exchange Commission, and include the accounts of Vocera and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated. Certain information and disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the annual audited consolidated financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2014. The year-end condensed balance sheet data was derived from the Company's audited financial statements, but does not include all disclosures required by U.S. GAAP.
	In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s interim consolidated financial information. The results for the quarter presented are not necessarily indicative of the results to be expected for the year ending December 31, 2015 or for any other interim period or any other future year.
	Use of Estimates
	The preparation of the accompanying unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting periods. The estimates include, but are not limited to, revenue recognition, useful lives assigned to long-lived assets, excess and obsolete inventory charges, warranty reserves, stock-based compensation expense, provisions for income taxes and contingencies. Actual results could differ from these estimates, and such differences could be material to the Company’s financial position and results of operations.
	Revenue Recognition
	The Company derives revenue from the sales of communication badges, perpetual software licenses for software that is essential to the functionality of the communication badges, smartphones, software maintenance, extended product warranty and professional services. The Company also derives revenue from the sale of licenses for software that is not essential to the functionality of the communication badges and certain hosted software subscriptions. The Company's revenue recognition policy has not changed from that described in its Annual Report on Form 10-K for the year ended December 31, 2014.
	Transfer of sales-type leases to third-parties
	Proceeds from transfers of sales-type leases to third-party financial companies are allocated between the net investment in sales-type leases and the executory cost component for remaining service obligations based on relative present value. The difference between the amount of proceeds allocated to the net investment in lease and the carrying value of the net investment in lease is included in product revenue. Proceeds allocated to the executory cost component are accounted for as financing liabilities.
	For the three months ended March 31, 2015 and 2014, the Company transferred $0.5 million and $0.5 million, respectively, of lease receivables in non-recourse sales to third-party financial companies, with immaterial net gains (losses). For the three months ended March 31, 2015 and 2014, the Company recorded $0.2 million and $0.3 million, respectively, of financing liabilities for future performance of executory service obligations. For lease receivables retained as of March 31, 2015 and December 31, 2014, the Company recorded $0.9 million and $0.9 million of net investment in sales-type leases, respectively, equivalent to the minimum lease payments less the unearned interest portion.
	Recent Accounting Pronouncements
	In May 2014, the FASB together with the International Accounting Standards Board issued converged guidance for revenue recognition that will replace most existing guidance, eliminate industry-specific guidance and provide a unified model for determining how and when revenue from contracts with customers should be recognized. Under the new guidance, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard will also introduce additional disclosures, changes in asset and liability accounting, and changes in gain/loss recognition for asset transfers unrelated to customer transactions.
	The Company’s effective date for this standard will be the first quarter of 2017; no early application is permitted. Two methods of transition are provided: a full retrospective approach, with certain practical expedients allowed, and a cumulative effect method, with balance sheet adjustment as of January 1, 2017. On April 1, 2015 the FASB tentatively decided to defer the effective adoption dates by one year and to permit early adoption. If the tentative decisions are issued the Company's effective date for this standard would be the first quarter of 2018. The Company is evaluating the effect the new standard will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the future effect of the standard on its financial position or results of operations.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments
	The Company’s cash, cash equivalents and short-term investments are carried at their fair values with any differences from their amortized cost recorded in equity as unrealized gains (losses) on marketable securities. As a basis for determining the fair value of its assets and liabilities, the Company established a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs other than the quoted prices in active markets that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data which requires the Company to develop its own assumptions. This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. For the three months ended March 31, 2015, there have been no transfers between Level 1 and Level 2 fair value instruments and no transfers in or out of Level 3.
	The Company's money market funds are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices. The fair value of the Company's Level 2 fixed income securities are obtained from independent pricing services, which may use quoted market prices for identical or comparable instruments or model-driven valuations using observable market data or other inputs corroborated by observable market data. The Company does not have any financial instruments which are valued using Level 3 inputs.
	The Company’s assets that are measured at fair value on a recurring basis, by level, within the fair value hierarchy as of March 31, 2015 and December 31, 2014, are summarized as follows (in thousands):
		March 31, 2015						December 31, 2014
		Level 1		Level 2		Total		Level 1		Level 2		Total
	Assets
	Money market funds	$	14,326	$	—	$	14,326	$	7,795	$	—	$	7,795
	Commercial paper	—		2,109		2,109		—		3,225		3,225
	U.S. government agency securities	—		10,917		10,917		—		5,955		5,955
	U.S. Treasury securities	—		2,527		2,527		—		4,043		4,043
	Municipal debt securities	—		1,061		1,061		—		3,924		3,924
	Corporate debt securities	—		76,679		76,679		—		82,517		82,517
	Total assets measured at fair value	$	14,326	$	93,293	$	107,619	$	7,795	$	99,664	$	107,459
	The Company had no liabilities as of March 31, 2015 and December 31, 2014 that were measured at fair value on a recurring basis.

Cash_Cash_Equivalents_and_Shor

Cash, Cash Equivalents and Short-term Investments	3 Months Ended
	Mar. 31, 2015
Cash and Cash Equivalents [Abstract]
Cash, Cash Equivalents, and Short-term Investments	Cash, Cash Equivalents and Short-Term Investments
	The following tables present current and prior-year-end balances for cash, cash equivalents and short-term investments (in thousands):
		As of March 31, 2015
		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
	Cash and cash equivalents:
	Demand deposits and other cash	$	7,855	$	—	$	—		$	7,855
	Money market funds	14,326		—		—			14,326
	Commercial paper	400		—		—			400
	Corporate debt securities	1,676		—		—			1,676
	Total cash and cash equivalents	24,257		—		—			24,257
	Short-Term Investments:
	Commercial paper	1,709		—		—			1,709
	U.S. government agency securities	10,912		5					10,917
	U.S. Treasury securities	2,524		3		—			2,527
	Municipal debt securities	1,061				—			1,061
	Corporate debt securities	75,039		15		(51		)	75,003
	Total short-term investments	91,245		23		(51		)	91,217
	Total cash, cash equivalents and short-term investments	$	115,502	$	23	$	(51	)	$	115,474
		As of December 31, 2014
		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
	Cash and cash equivalents:
	Demand deposits and other cash	$	8,802	$	—	$	—		$	8,802
	Money market funds	7,795		—		—			7,795
	Commercial paper	1,365		—		—			1,365
	U.S. government agency securities	100		—		—			100
	Corporate debt securities	4,553		—		—			4,553
	Total cash and cash equivalents	22,615		—		—			22,615
	Short-Term Investments:
	Commercial paper	1,860		—		—			1,860
	U.S. government agency securities	5,856		1		(2		)	5,855
	U.S. Treasury securities	4,042		1		—			4,043
	Municipal debt securities	3,922		2		—			3,924
	Corporate debt securities	78,044		5		(85		)	77,964
	Total short-term investments	93,724		9		(87		)	93,646
	Total cash, cash equivalents and short-term investments	$	116,339	$	9	$	(87	)	$	116,261
	The Company has determined that the unrealized losses on its short-term investments as of March 31, 2015 and December 31, 2014 do not constitute an "other than temporary impairment." The unrealized losses for the short-term investments have all been in a continuous unrealized loss position for less than twelve months. The Company’s conclusion of no “other than temporary impairment” is based on the high credit quality of the securities, their short remaining maturity (less than seven months, weighted average) and the Company’s intent and ability to hold such loss securities until maturity.
	Classification of the cash, cash equivalent and short-term investments by contractual maturity was as follows:
	(in thousands)	One year or shorter		Between 1 and 2 years		Total
	Balances as of March 31, 2015
	Cash and cash equivalents (1)	$	24,257	$	—	$	24,257
	Short-term investments	80,522		10,695		91,217
	Cash, cash equivalents and short-term investments	$	104,779	$	10,695	$	115,474
	Balances as of December 31, 2014
	Cash and cash equivalents (1)	$	22,615	$	—	$	22,615
	Short-term investments	76,917		16,729		93,646
	Cash, cash equivalents and short-term investments	$	99,532	$	16,729	$	116,261
	(1) Includes demand deposits and other cash, money market funds and other cash equivalent securities, all with 0-90 day maturity at purchase.
	All the above tables exclude restricted cash, primarily held in certificates of deposit, of zero and $0.1 million as of March 31, 2015 and December 31, 2014, respectively, which is classified within prepaid expenses and other current assets on the balance sheet.

Net_Loss_Per_Share

Net Loss Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Loss Per Share	Net Loss Per Share
	The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts):
		Three months ended March 31,
		2015				2014
	Numerator:
	Net loss	$	(4,487	)		$	(6,389	)
	Denominator:
	Weighted-average shares used to compute net loss per common share - basic and diluted	25,667				25,047
	Net loss per share
	Basic and diluted	$	(0.17	)		$	(0.26	)
	The following securities were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:
		Three months ended March 31,
	(in thousands)	2015			2014
	Options to purchase common stock, including ESPP	3,440			3,305
	Common stock subject to repurchase	1			7
	Warrants to purchase common stock	44			44
	Restricted stock units	1,064			802

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	Goodwill
	As of March 31, 2015 and December 31, 2014, the Company had $10.0 million and $10.0 million of goodwill acquired. As of March 31, 2015, there were no changes in circumstances indicating that the carrying values of goodwill or acquired intangibles may not be recoverable.
	Intangible Assets
	Acquisition-related intangible assets are amortized either straight-line, or over the life of the assets on a basis that resembles the economic benefit of the assets. This yields amortization in the latter case that is higher in earlier periods of the useful life.
	The estimated useful lives and carrying value of acquired intangible assets are as follows:
				March 31, 2015						December 31, 2014
	(in thousands)	Range of		Gross		Accumulated		Net		Gross		Accumulated		Net
		Useful Life		Carrying		Amortization		Carrying		Carrying		Amortization		Carrying
		(years)		Amount				Amount		Amount				Amount
	Developed technology	4 to 7		$	2,710	$	1,773	$	937	$	2,710	$	1,693	$	1,017
	Customer relationships	7 to 9		2,520		1,775		745		2,520		1,722		798
	Non-compete agreements	2 to 4		460		134		326		460		91		369
	Trademarks and trade names	4 to 7		110		67		43		110		63		47
	Intangible assets - finite life			5,800		3,749		2,051		5,800		3,569		2,231
	In-process research and development	n/a		940		—		940		940				940
	Intangible assets, net book value			$	6,740	$	3,749	$	2,991	$	6,740	$	3,569	$	3,171
	Amortization expense was $0.2 million and $0.2 million for the three months ended March 31, 2015 and 2014, respectively.
	Amortization of acquired intangible assets is reflected in the cost of revenue or operating expenses, depending on the nature of the intangible. The estimated future amortization of existing acquired intangible assets as of March 31, 2015, excluding in-process R&D, was as follows:
	(in thousands)		Future amortization
	2015 (nine months remaining)		547
	2016		562
	2017		394
	2018		275
	2019		229
	Thereafter		44
	Future amortization expense		$	2,051

Balance_Sheet_Components

Balance Sheet Components	3 Months Ended
	Mar. 31, 2015
Balance Sheet Components [Abstract]
Balance Sheet Components	Balance Sheet Components
	Inventories
	(in thousands)	March 31,			December 31,
		2015			2014
	Raw materials	$	452		$	759
	Finished goods	2,244			2,703
	Total inventories	$	2,696		$	3,462
	Property and equipment, net
	(in thousands)	March 31,			December 31,
		2015			2014
	Computer equipment and software	$	8,940		$	8,772
	Furniture, fixtures and equipment	975			962
	Leasehold improvements	2,342			2,298
	Manufacturing tools and equipment	3,840			3,795
	Construction in process	65			122
	Property and equipment, at cost	16,162			15,949
	Less: Accumulated depreciation	(11,439		)	(10,827		)
	Property and equipment, net	$	4,723		$	5,122
	Depreciation and amortization expense was $0.7 million and $0.5 million for the three months ended March 31, 2015 and 2014, respectively.
	Net investment in sales-type leases
	The Company has sales-type leases with terms of 1.25 to 4 years. Sales-type lease receivables are collateralized by the underlying equipment. The components of our net investment in sales-type leases are as follows:
	(in thousands)	March 31,			December 31,
		2015			2014
	Minimum payments to be received on sales-type leases	$	1,766		$	1,882
	Less: Unearned interest income and executory costs	(866		)	(962		)
	Net investment in sales-type leases	900			920
	Less: Current portion	(616		)	(564		)
	Non-current net investment in sales-type leases	$	284		$	356
	There were no allowances for doubtful accounts on these leases as of March 31, 2015 and December 31, 2014. There is no guaranteed or unguaranteed residual value on the leased equipment. The current and non-current net investments in sales-types leases are reported as components of the consolidated balance sheet captions "other receivables" and "other long-term assets," respectively.
	The minimum payments expected to be received for future years under sales-type leases as of March 31, 2015 were as follows:
	(in thousands)	Future lease payments
	2015 (nine months remaining)	728
	2016	739
	2017	291
	Total	$	1,766
	Accrued payroll and other current liabilities
	(in thousands)	March 31,			December 31,
		2015			2014
	Payroll and related expenses	$	4,840		$	7,009
	Accrued payables	767			1,715
	Deferred rent, current portion	247			299
	Lease financing, current portion	669			645
	Product warranty	834			497
	Customer prepayments	195			283
	Sales and use tax payable	324			293
	Other	130			122
	Total accrued payroll and other current liabilities	$	8,006		$	10,863
	The changes in the Company's product warranty reserve are as follows:
		Three months ended March 31,
	(in thousands)	2015			2014
	Warranty balance at the beginning of the period	$	497		$	840
	Warranty expense accrued for shipments during the period	64			298
	Changes in estimate related to pre-existing warranties	358			51
	Warranty settlements made	(85		)	(467		)
	Warranty balance at the end of the period	$	834		$	722

Commitments

Commitments	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	Commitments and Contingencies
	Non-cancelable Material Commitments
	The Company is required to purchase unused, non-cancelable, non-returnable raw material inventory that was purchased by its contract manufacturers based on committed finished goods orders from the Company, certain long lead-time raw materials based on the Company’s forecast and current work-in-progress materials. As of March 31, 2015 and December 31, 2014, approximately $3.0 million and $1.9 million, respectively, of such inventory was purchased and held by the third-party manufacturers which was subject to these purchase guarantees.
	Leases
	The Company leases office space for its headquarters and subsidiaries under non-cancelable operating leases, which will expire between December 2015 and April 2017. The San Jose, California headquarters lease expires on March 31, 2016, with a single three-year extension option at rates approximating the then-fair market value. The Company recognizes rent expense on a straight-line basis over the lease period, and has accrued for rent expense incurred but not paid. Facilities rent expense was $0.5 million and $0.5 million for the three months ended March 31, 2015 and 2014, respectively.
	Future minimum lease payments at March 31, 2015 under non-cancelable operating leases are as follows:
	(in thousands)	Operating leases
	2015 (remaining nine months)	$	1,310
	2016	610
	2017	107
	Total minimum lease payments	$	2,027
	Indemnifications
	The Company undertakes, in the ordinary course of business, to (i) defend customers and other parties from certain third-party claims associated with allegations of trade secret misappropriation, infringement of copyright, patent or other intellectual property rights, tortious damage to persons or property or breaches of certain Company obligations relating to confidentiality (e.g., safeguarding protected health information) and (ii) indemnify and hold harmless such parties from certain resulting damages, costs and other liabilities. The term of these undertakings may be perpetual and the maximum potential liability of the Company under certain of these undertakings is not determinable. Based on its historical experience, the Company believes the liability associated with these undertakings is minimal.
	The Company has entered into indemnification agreements with its directors and officers that may require the Company to indemnify its directors and officers against liabilities that may arise by reason of their status or service as directors or officers, other than liabilities arising from willful misconduct of the individual. The Company currently has directors and officers insurance. As there has been no significant history of losses, no expense accrual has been made.
	Securities Litigation
	On August 1 and 21, 2013, two putative securities class action suits were filed in the United States District Court for the Northern District of California against the Company and certain of its officers, its board of directors, a former director and the underwriters for the Company's initial public offering.  On November 20, 2013, the court consolidated the actions as In re Vocera Communications, Inc. Securities Litigation and appointed Lead Plaintiffs.  Lead Plaintiffs filed their consolidated complaint on September 19, 2014.   The consolidated complaint names certain current and former officers and directors and the underwriters for the Company's initial public offering and secondary offering and alleges claims under Sections 11, 12(a)(2) and 15 of the Securities Act and Section 10(b) and 20(a) of the Exchange Act based on allegedly false and materially misleading statements and omissions in the registration statement for the Company's initial public offering and secondary offering and in communications regarding its business and financial results. The suit is purportedly brought on behalf of purchasers of the Company's securities between March 28, 2012 and May 2, 2013, and seeks compensatory damages, rescission, fees and costs, as well as other relief.  On November 3, 2014, Defendants moved to dismiss the consolidated complaint. On February 11, 2015, the Court granted Defendants' motion to dismiss the Securities Act claims, but denied the motion as to the Exchange Act claims, allowing the matter to proceed on that basis. On April 27, 2015, Defendants filed answers to the consolidated complaint.
	Due to the inherent uncertainties of litigation, the Company cannot accurately predict the ultimate outcome of this matter. The Company is unable at this time to determine whether the outcome of the litigation would have a material impact on its results of operations, financial condition or cash flow. The Company has not established any reserve for any potential liability relating to this lawsuit because this contingency is not considered probable and reasonably estimable.
	From time to time, the Company may be involved in other lawsuits, claims, investigations and proceedings, consisting of intellectual property, commercial, employment and other matters which arise in the ordinary course of business.

Stockbased_Compensation_and_Aw

Stock-based Compensation and Awards	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation and Award	Stock-based Compensation and Awards
	Stock Option Activity
	A summary of the stock option activity for the three months ended March 31, 2015 is presented below:
		Options outstanding
		Number of Options			Weighted Average Exercise Price			Weighted average remaining contractual term	Aggregate intrinsic value
								(in years)	(in thousands)
	Outstanding at December 31, 2014	3,418,624			$	9.8		6.24	$	12,167
	Options granted	51,930			10.36
	Options exercised	(26,263	)		4.02
	Options canceled	(76,244	)		20.09
	Outstanding at March 31, 2015	3,368,047			$	9.62		6.18	$	11,068
	At March 31, 2015, there was $5.9 million of unrecognized net compensation cost related to options which is expected to be recognized over a weighted-average period of 2.70 years. As of March 31, 2015, there were 1,899,663 shares that remained available for future issuance of options, restricted stock units (“RSUs”) or other equity awards under the 2012 Equity Incentive Plan.
	The Company uses the Black-Scholes option-pricing model to calculate the fair value of stock options on their grant date. The following assumptions were used for each respective period for employee stock options:
		Three months ended March 31,
		2015		2014
	Expected Term (in years)	5.39		5.41
	Volatility	41.80%		48.20%
	Risk-free interest rate	1.63%		1.59%
	Dividend yield	0%		0%
	Employee Stock Purchase Plan
	In March 2012, the Company’s 2012 Employee Stock Purchase Plan (the “ESPP”) was approved. No shares of common stock were purchase during the three months ended March 31, 2015 and 2014. As of March 31, 2015, there were 539,095 shares available for future issuance under the ESPP.
	The following Black-Scholes option-pricing assumptions were used for each respective period for the ESPP:
		Three months ended March 31,
		2015		2014
	Expected Term (in years)	0.5		0.5
	Volatility	57.80%		36.00%
	Risk-free interest rate	0.07%		0.10%
	Dividend yield	0%		0%
	Restricted Stock Units
	A summary of RSU activity for the three months ended March 31, 2015 is presented below:
		Restricted Stock Units
		Number of shares			Weighted Average Grant Date Fair Value per Share
	Outstanding at December 31, 2014	1,062,590			$	13.79
	Granted	72,537			10.01
	Vested	(43,280	)		19.77
	Forfeited	(27,536	)		14.07
	Outstanding at March 31, 2015	1,064,311			$	13.28
	At March 31, 2015, there was $8.4 million of unrecognized net compensation cost related to RSUs, which is expected to be recognized over a weighted-average period of 1.75 years.
	Allocation of Stock-Based Compensation Expense
	The following table presents the stock-based compensation allocation of expense (both for employees and non-employees):
		Three months ended March 31,
	(in thousands)	2015				2014
	Cost of revenue	$	309			$	286
	Research and development	260				220
	Sales and marketing	1,034				967
	General and administrative	991				1,125
	Total stock-based compensation	$	2,594			$	2,598

Segments

Segments	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segments	Segments
	The Company has two operating segments, which are both reportable business segments: (i) Product and (ii) Service, both of which are comprised of Vocera’s and its wholly-owned subsidiaries’ results of operations.
	The following table presents a summary of the operating segments:
		Three months ended March 31,
	(in thousands)	2015			2014
	Revenue
	Product	$	12,462		$	14,189
	Service	11,356			10,487
	Total revenue	23,818			24,676
	Cost of Revenue
	Product	4,432			4,990
	Service	4,851			4,814
	Total cost of revenue	9,283			9,804
	Gross profit
	Product	8,030			9,199
	Service	6,505			5,673
	Total gross profit	14,535			14,872
	Operating expenses	18,897			21,206
	Interest (expense) income, net and other	(22		)	22
	Loss before income taxes	$	(4,384	)	$	(6,312	)

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The Company recorded a $0.1 million provision and $0.1 million provision for income taxes for the three months ended March 31, 2015 and 2014, respectively. The provision in both periods was primarily due to taxes on international operations and state income taxes.
	As of March 31, 2015, the Company has provided a valuation allowance against certain federal and state deferred tax assets. Management continues to evaluate the realizability of deferred tax assets and the related valuation allowance. If management's assessment of the deferred tax assets or the corresponding valuation allowance were to change, the Company would record the related adjustment to income during the period in which management makes the determination.
	As of March 31, 2015, there were no material changes to either the nature or the amounts of the uncertain tax positions previously determined for the year ended December 31, 2014.

Business_Acquisition

Business Acquisition	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Business Combination Disclosure	Business Acquisitions
	Acquisition of mVisum net assets
	On January 13, 2014, the Company acquired certain assets and certain liabilities of mVisum, Inc. (“mVisum”), an innovative provider of alarm management technology solutions for health systems, for $3.5 million in cash. The acquisition enabled the Company to enhance its existing platform with complementary communications solutions for healthcare and other mission-critical environments.
	The following table presents the fair value of the identifiable assets acquired and liabilities assumed as of the acquisition date:
	(in thousands)	Fair value of net assets acquired
	Accounts receivable	$	187
	Intangibles
	Developed technology	830
	Non-compete agreement	260
	Customer relationships	170
	Trademarks and trade names	40
	Goodwill	2,103
	Total assets	3,590
	Deferred revenue	(90		)
	Net assets acquired	$	3,500
	The estimated fair values of identifiable intangible assets were primarily determined using discounted cash flow models. The acquired intangible assets are amortized over their estimated useful lives of 4.0 to 7.0 years with a weighted average amortization period of 5.7 years.
	The excess of the acquisition consideration over the fair values of the underlying net assets acquired was recorded as goodwill. Goodwill is largely attributable to the synergy of mVisum’s proprietary solutions with the Company’s existing customer base, dedicated sales force and cross selling opportunities with the Company’s other solutions. Goodwill is not amortized but instead is tested for impairment at least annually or more frequently if indicators of impairment are present. For federal income tax purposes, the entire purchase consideration, including goodwill, is deductible over fifteen years. The goodwill recorded from the acquisition of mVisum is attributed to the Product reporting unit.
	The Company incurred $0.2 million of acquisition-related costs that were expensed as incurred. These costs are recorded as general and administrative expenses in the consolidated statement of operations. Additionally, in connection with the acquisition the Company established a retention bonus plan for mVisum with potential additional compensation over a two-year period of approximately $0.5 million, based on achievement of operating objectives and continued employment. Such amounts are not considered part of the purchase consideration and are being recorded as earned as compensation expense. The acquisition did not result in material contributions to revenue or net loss in the consolidated financial statements since the acquisition date. Additionally, pro forma financial information is not provided for consolidated revenue and net loss as such amounts attributable to mVisum were insignificant.

The_Company_and_Summary_of_Sig1

The Company and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Nature of Operations	Organization and Business
	Vocera Communications, Inc. (the “Company” or "Vocera") is a provider of secure, integrated, intelligent communication solutions, focused on empowering mobile workers in healthcare, hospitality, energy, and other mission-critical mobile work environments, in the United States and internationally. The significant majority of the Company's business is currently generated from sales of its solutions in the healthcare market to help its customers improve patient safety and experience, and increase operational efficiency. As of March 31, 2015 the Company's solutions have been installed in more than 1,300 facilities worldwide.
	The Vocera Communication System, which includes an intelligent enterprise software platform, a lightweight, wearable, voice-controlled communication badge, and smartphone applications, enables users to connect instantly with other staff simply by saying the name, function or group name of the desired recipient. It also securely delivers text messages and alerts directly to and from smartphones, replacing legacy pagers. Other software applications help improve care coordination, patient safety, and patient satisfaction.
Basis of Presentation	Basis of Presentation
	The Company’s unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and pursuant to the instructions to Form 10-Q and Article 10 of Regulation S-X of the U.S. Securities and Exchange Commission, and include the accounts of Vocera and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated. Certain information and disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the annual audited consolidated financial statements and notes thereto contained in the Company's Annual Report on Form 10-K for the year ended December 31, 2014. The year-end condensed balance sheet data was derived from the Company's audited financial statements, but does not include all disclosures required by U.S. GAAP.
	In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments, which include only normal recurring adjustments, necessary to present fairly the Company’s interim consolidated financial information. The results for the quarter presented are not necessarily indicative of the results to be expected for the year ending December 31, 2015 or for any other interim period or any other future year.
Use of Estimates	Use of Estimates
	The preparation of the accompanying unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reporting periods. The estimates include, but are not limited to, revenue recognition, useful lives assigned to long-lived assets, excess and obsolete inventory charges, warranty reserves, stock-based compensation expense, provisions for income taxes and contingencies. Actual results could differ from these estimates, and such differences could be material to the Company’s financial position and results of operations.
Revenue Recognition	Revenue Recognition
	The Company derives revenue from the sales of communication badges, perpetual software licenses for software that is essential to the functionality of the communication badges, smartphones, software maintenance, extended product warranty and professional services. The Company also derives revenue from the sale of licenses for software that is not essential to the functionality of the communication badges and certain hosted software subscriptions. The Company's revenue recognition policy has not changed from that described in its Annual Report on Form 10-K for the year ended December 31, 2014.
Lease, Policy	Transfer of sales-type leases to third-parties
	Proceeds from transfers of sales-type leases to third-party financial companies are allocated between the net investment in sales-type leases and the executory cost component for remaining service obligations based on relative present value. The difference between the amount of proceeds allocated to the net investment in lease and the carrying value of the net investment in lease is included in product revenue. Proceeds allocated to the executory cost component are accounted for as financing liabilities.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In May 2014, the FASB together with the International Accounting Standards Board issued converged guidance for revenue recognition that will replace most existing guidance, eliminate industry-specific guidance and provide a unified model for determining how and when revenue from contracts with customers should be recognized. Under the new guidance, an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard will also introduce additional disclosures, changes in asset and liability accounting, and changes in gain/loss recognition for asset transfers unrelated to customer transactions.
	The Company’s effective date for this standard will be the first quarter of 2017; no early application is permitted. Two methods of transition are provided: a full retrospective approach, with certain practical expedients allowed, and a cumulative effect method, with balance sheet adjustment as of January 1, 2017. On April 1, 2015 the FASB tentatively decided to defer the effective adoption dates by one year and to permit early adoption. If the tentative decisions are issued the Company's effective date for this standard would be the first quarter of 2018. The Company is evaluating the effect the new standard will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the future effect of the standard on its financial position or results of operations.
Fair Value of Fin. Instruments, Policy	Fair Value of Financial Instruments
	The Company’s cash, cash equivalents and short-term investments are carried at their fair values with any differences from their amortized cost recorded in equity as unrealized gains (losses) on marketable securities. As a basis for determining the fair value of its assets and liabilities, the Company established a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices in active markets; (Level 2) inputs other than the quoted prices in active markets that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data which requires the Company to develop its own assumptions. This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. For the three months ended March 31, 2015, there have been no transfers between Level 1 and Level 2 fair value instruments and no transfers in or out of Level 3.
	The Company's money market funds are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices. The fair value of the Company's Level 2 fixed income securities are obtained from independent pricing services, which may use quoted market prices for identical or comparable instruments or model-driven valuations using observable market data or other inputs corroborated by observable market data. The Company does not have any financial instruments which are valued using Level 3 inputs.
Goodwill, Policy	Goodwill
	As of March 31, 2015 and December 31, 2014, the Company had $10.0 million and $10.0 million of goodwill acquired. As of March 31, 2015, there were no changes in circumstances indicating that the carrying values of goodwill or acquired intangibles may not be recoverable.
Intangible Assets, Policy	Intangible Assets
	Acquisition-related intangible assets are amortized either straight-line, or over the life of the assets on a basis that resembles the economic benefit of the assets. This yields amortization in the latter case that is higher in earlier periods of the useful life.
Purchase commitments	Non-cancelable Material Commitments
	The Company is required to purchase unused, non-cancelable, non-returnable raw material inventory that was purchased by its contract manufacturers based on committed finished goods orders from the Company, certain long lead-time raw materials based on the Company’s forecast and current work-in-progress materials. As of March 31, 2015 and December 31, 2014, approximately $3.0 million and $1.9 million, respectively, of such inventory was purchased and held by the third-party manufacturers which was subject to these purchase guarantees.
Operating leases	Leases
	The Company leases office space for its headquarters and subsidiaries under non-cancelable operating leases, which will expire between December 2015 and April 2017. The San Jose, California headquarters lease expires on March 31, 2016, with a single three-year extension option at rates approximating the then-fair market value. The Company recognizes rent expense on a straight-line basis over the lease period, and has accrued for rent expense incurred but not paid. Facilities rent expense was $0.5 million and $0.5 million for the three months ended March 31, 2015 and 2014, respectively.
Segment Reporting, Policy	The Company has two operating segments, which are both reportable business segments: (i) Product and (ii) Service, both of which are comprised of Vocera’s and its wholly-owned subsidiaries’ results of operations.

Fair_Value_of_Financial_Instur

Fair Value of Financial Insturments (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	The Company’s assets that are measured at fair value on a recurring basis, by level, within the fair value hierarchy as of March 31, 2015 and December 31, 2014, are summarized as follows (in thousands):
		March 31, 2015						December 31, 2014
		Level 1		Level 2		Total		Level 1		Level 2		Total
	Assets
	Money market funds	$	14,326	$	—	$	14,326	$	7,795	$	—	$	7,795
	Commercial paper	—		2,109		2,109		—		3,225		3,225
	U.S. government agency securities	—		10,917		10,917		—		5,955		5,955
	U.S. Treasury securities	—		2,527		2,527		—		4,043		4,043
	Municipal debt securities	—		1,061		1,061		—		3,924		3,924
	Corporate debt securities	—		76,679		76,679		—		82,517		82,517
	Total assets measured at fair value	$	14,326	$	93,293	$	107,619	$	7,795	$	99,664	$	107,459

Cash_Cash_Equivalents_and_Shor1

Cash, Cash Equivalents and Short-term Investments (Tables)	3 Months Ended
	Mar. 31, 2015
Cash and Cash Equivalents [Abstract]
Schedule of Cash, Cash Equivalents and Available-For-Sale Investments	The following tables present current and prior-year-end balances for cash, cash equivalents and short-term investments (in thousands):
		As of March 31, 2015
		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
	Cash and cash equivalents:
	Demand deposits and other cash	$	7,855	$	—	$	—		$	7,855
	Money market funds	14,326		—		—			14,326
	Commercial paper	400		—		—			400
	Corporate debt securities	1,676		—		—			1,676
	Total cash and cash equivalents	24,257		—		—			24,257
	Short-Term Investments:
	Commercial paper	1,709		—		—			1,709
	U.S. government agency securities	10,912		5					10,917
	U.S. Treasury securities	2,524		3		—			2,527
	Municipal debt securities	1,061				—			1,061
	Corporate debt securities	75,039		15		(51		)	75,003
	Total short-term investments	91,245		23		(51		)	91,217
	Total cash, cash equivalents and short-term investments	$	115,502	$	23	$	(51	)	$	115,474
		As of December 31, 2014
		Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
	Cash and cash equivalents:
	Demand deposits and other cash	$	8,802	$	—	$	—		$	8,802
	Money market funds	7,795		—		—			7,795
	Commercial paper	1,365		—		—			1,365
	U.S. government agency securities	100		—		—			100
	Corporate debt securities	4,553		—		—			4,553
	Total cash and cash equivalents	22,615		—		—			22,615
	Short-Term Investments:
	Commercial paper	1,860		—		—			1,860
	U.S. government agency securities	5,856		1		(2		)	5,855
	U.S. Treasury securities	4,042		1		—			4,043
	Municipal debt securities	3,922		2		—			3,924
	Corporate debt securities	78,044		5		(85		)	77,964
	Total short-term investments	93,724		9		(87		)	93,646
	Total cash, cash equivalents and short-term investments	$	116,339	$	9	$	(87	)	$	116,261
Investments Classified by Contractual Maturity Date	Classification of the cash, cash equivalent and short-term investments by contractual maturity was as follows:
	(in thousands)	One year or shorter		Between 1 and 2 years		Total
	Balances as of March 31, 2015
	Cash and cash equivalents (1)	$	24,257	$	—	$	24,257
	Short-term investments	80,522		10,695		91,217
	Cash, cash equivalents and short-term investments	$	104,779	$	10,695	$	115,474
	Balances as of December 31, 2014
	Cash and cash equivalents (1)	$	22,615	$	—	$	22,615
	Short-term investments	76,917		16,729		93,646
	Cash, cash equivalents and short-term investments	$	99,532	$	16,729	$	116,261
	(1) Includes demand deposits and other cash, money market funds and other cash equivalent securities, all with 0-90 day maturity at purchase.

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of the computation of basic and diluted net income (loss) per share	The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts):
		Three months ended March 31,
		2015				2014
	Numerator:
	Net loss	$	(4,487	)		$	(6,389	)
	Denominator:
	Weighted-average shares used to compute net loss per common share - basic and diluted	25,667				25,047
	Net loss per share
	Basic and diluted	$	(0.17	)		$	(0.26	)
Schedule of antidilutive securities excluded from computation of earnings per share	The following securities were not included in the calculation of diluted shares outstanding as the effect would have been anti-dilutive:
		Three months ended March 31,
	(in thousands)	2015			2014
	Options to purchase common stock, including ESPP	3,440			3,305
	Common stock subject to repurchase	1			7
	Warrants to purchase common stock	44			44
	Restricted stock units	1,064			802

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets	The estimated useful lives and carrying value of acquired intangible assets are as follows:
				March 31, 2015						December 31, 2014
	(in thousands)	Range of		Gross		Accumulated		Net		Gross		Accumulated		Net
		Useful Life		Carrying		Amortization		Carrying		Carrying		Amortization		Carrying
		(years)		Amount				Amount		Amount				Amount
	Developed technology	4 to 7		$	2,710	$	1,773	$	937	$	2,710	$	1,693	$	1,017
	Customer relationships	7 to 9		2,520		1,775		745		2,520		1,722		798
	Non-compete agreements	2 to 4		460		134		326		460		91		369
	Trademarks and trade names	4 to 7		110		67		43		110		63		47
	Intangible assets - finite life			5,800		3,749		2,051		5,800		3,569		2,231
	In-process research and development	n/a		940		—		940		940				940
	Intangible assets, net book value			$	6,740	$	3,749	$	2,991	$	6,740	$	3,569	$	3,171
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Amortization of acquired intangible assets is reflected in the cost of revenue or operating expenses, depending on the nature of the intangible. The estimated future amortization of existing acquired intangible assets as of March 31, 2015, excluding in-process R&D, was as follows:
	(in thousands)		Future amortization
	2015 (nine months remaining)		547
	2016		562
	2017		394
	2018		275
	2019		229
	Thereafter		44
	Future amortization expense		$	2,051

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 31, 2015
Balance Sheet Components [Abstract]
Inventories	Inventories
	(in thousands)	March 31,			December 31,
		2015			2014
	Raw materials	$	452		$	759
	Finished goods	2,244			2,703
	Total inventories	$	2,696		$	3,462
Property and Equipment	Property and equipment, net
	(in thousands)	March 31,			December 31,
		2015			2014
	Computer equipment and software	$	8,940		$	8,772
	Furniture, fixtures and equipment	975			962
	Leasehold improvements	2,342			2,298
	Manufacturing tools and equipment	3,840			3,795
	Construction in process	65			122
	Property and equipment, at cost	16,162			15,949
	Less: Accumulated depreciation	(11,439		)	(10,827		)
	Property and equipment, net	$	4,723		$	5,122
	Depreciation and amortization expense was $0.7 million and $0.5 million for the three months ended March 31, 2015 and 2014, respectively.
Schedule of Components of Leveraged Lease Investments	Net investment in sales-type leases
	The Company has sales-type leases with terms of 1.25 to 4 years. Sales-type lease receivables are collateralized by the underlying equipment. The components of our net investment in sales-type leases are as follows:
	(in thousands)	March 31,			December 31,
		2015			2014
	Minimum payments to be received on sales-type leases	$	1,766		$	1,882
	Less: Unearned interest income and executory costs	(866		)	(962		)
	Net investment in sales-type leases	900			920
	Less: Current portion	(616		)	(564		)
	Non-current net investment in sales-type leases	$	284		$	356
	There were no allowances for doubtful accounts on these leases as of March 31, 2015 and December 31, 2014. There is no guaranteed or unguaranteed residual value on the leased equipment. The current and non-current net investments in sales-types leases are reported as components of the consolidated balance sheet captions "other receivables" and "other long-term assets," respectively.
Schedule of Future Minimum Lease Payments for Capital Leases	The minimum payments expected to be received for future years under sales-type leases as of March 31, 2015 were as follows:
	(in thousands)	Future lease payments
	2015 (nine months remaining)	728
	2016	739
	2017	291
	Total	$	1,766
Accrued Liabilities	Accrued payroll and other current liabilities
	(in thousands)	March 31,			December 31,
		2015			2014
	Payroll and related expenses	$	4,840		$	7,009
	Accrued payables	767			1,715
	Deferred rent, current portion	247			299
	Lease financing, current portion	669			645
	Product warranty	834			497
	Customer prepayments	195			283
	Sales and use tax payable	324			293
	Other	130			122
	Total accrued payroll and other current liabilities	$	8,006		$	10,863
Schedule of Product Warranty Liability	The changes in the Company's product warranty reserve are as follows:
		Three months ended March 31,
	(in thousands)	2015			2014
	Warranty balance at the beginning of the period	$	497		$	840
	Warranty expense accrued for shipments during the period	64			298
	Changes in estimate related to pre-existing warranties	358			51
	Warranty settlements made	(85		)	(467		)
	Warranty balance at the end of the period	$	834		$	722

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum lease payments at March 31, 2015 under non-cancelable operating leases are as follows:
	(in thousands)	Operating leases
	2015 (remaining nine months)	$	1,310
	2016	610
	2017	107
	Total minimum lease payments	$	2,027

Stockbased_Compensation_and_Aw1

Stock-based Compensation and Awards (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Rollforward of stock option activity	A summary of the stock option activity for the three months ended March 31, 2015 is presented below:
		Options outstanding
		Number of Options			Weighted Average Exercise Price			Weighted average remaining contractual term	Aggregate intrinsic value
								(in years)	(in thousands)
	Outstanding at December 31, 2014	3,418,624			$	9.8		6.24	$	12,167
	Options granted	51,930			10.36
	Options exercised	(26,263	)		4.02
	Options canceled	(76,244	)		20.09
	Outstanding at March 31, 2015	3,368,047			$	9.62		6.18	$	11,068
Stock option valuation assumptions	The following assumptions were used for each respective period for employee stock options:
		Three months ended March 31,
		2015		2014
	Expected Term (in years)	5.39		5.41
	Volatility	41.80%		48.20%
	Risk-free interest rate	1.63%		1.59%
	Dividend yield	0%		0%
Equity B-S-M Valuation Assumptions	The following Black-Scholes option-pricing assumptions were used for each respective period for the ESPP:
		Three months ended March 31,
		2015		2014
	Expected Term (in years)	0.5		0.5
	Volatility	57.80%		36.00%
	Risk-free interest rate	0.07%		0.10%
	Dividend yield	0%		0%
Rollforward of RSA and RSU activty	A summary of RSU activity for the three months ended March 31, 2015 is presented below:
		Restricted Stock Units
		Number of shares			Weighted Average Grant Date Fair Value per Share
	Outstanding at December 31, 2014	1,062,590			$	13.79
	Granted	72,537			10.01
	Vested	(43,280	)		19.77
	Forfeited	(27,536	)		14.07
	Outstanding at March 31, 2015	1,064,311			$	13.28
Allocation of Recognized Period Costs	The following table presents the stock-based compensation allocation of expense (both for employees and non-employees):
		Three months ended March 31,
	(in thousands)	2015				2014
	Cost of revenue	$	309			$	286
	Research and development	260				220
	Sales and marketing	1,034				967
	General and administrative	991				1,125
	Total stock-based compensation	$	2,594			$	2,598

Segments_Segments_Tables

Segments Segments (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segments	The following table presents a summary of the operating segments:
		Three months ended March 31,
	(in thousands)	2015			2014
	Revenue
	Product	$	12,462		$	14,189
	Service	11,356			10,487
	Total revenue	23,818			24,676
	Cost of Revenue
	Product	4,432			4,990
	Service	4,851			4,814
	Total cost of revenue	9,283			9,804
	Gross profit
	Product	8,030			9,199
	Service	6,505			5,673
	Total gross profit	14,535			14,872
	Operating expenses	18,897			21,206
	Interest (expense) income, net and other	(22		)	22
	Loss before income taxes	$	(4,384	)	$	(6,312	)

Business_Acquisition_Tables

Business Acquisition (Tables) (Net assets of mVisum, Inc.)	3 Months Ended
	Mar. 31, 2015
Net assets of mVisum, Inc.
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table presents the fair value of the identifiable assets acquired and liabilities assumed as of the acquisition date:
	(in thousands)	Fair value of net assets acquired
	Accounts receivable	$	187
	Intangibles
	Developed technology	830
	Non-compete agreement	260
	Customer relationships	170
	Trademarks and trade names	40
	Goodwill	2,103
	Total assets	3,590
	Deferred revenue	(90		)
	Net assets acquired	$	3,500

The_Company_and_Summary_of_Sig2

The Company and Summary of Significant Accounting Policies Narrative (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accounting Policies [Abstract]
sales type capital leases transfered to banks	$500	$500
Initial financing liability during period incurred for future executory services on transfered leases	200	300
Net Investment in Sales Type Leases	$900		$920

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	$0
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3	0
Assets, Fair Value Disclosure [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	24,257,000	22,615,000
AFS Securities, Fair Value Disclosure	91,217,000	93,646,000
Fair Value, Measurements, Recurring | Level 1
Assets, Fair Value Disclosure [Abstract]
Total assets measured at fair value	14,326,000	7,795,000
Fair Value, Measurements, Recurring | Level 2
Assets, Fair Value Disclosure [Abstract]
Total assets measured at fair value	93,293,000	99,664,000
Fair Value, Measurements, Recurring | Total
Assets, Fair Value Disclosure [Abstract]
Total assets measured at fair value	107,619,000	107,459,000
Fair Value, Measurements, Recurring | Money market funds | Level 1
Assets, Fair Value Disclosure [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	14,326,000	7,795,000
Fair Value, Measurements, Recurring | Money market funds | Level 2
Assets, Fair Value Disclosure [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | Money market funds | Total
Assets, Fair Value Disclosure [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	14,326,000	7,795,000
Fair Value, Measurements, Recurring | Commercial paper | Level 1
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | Commercial paper | Level 2
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	2,109,000	3,225,000
Fair Value, Measurements, Recurring | Commercial paper | Total
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	2,109,000	3,225,000
Fair Value, Measurements, Recurring | U.S. government agency securities | Level 1
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | U.S. government agency securities | Level 2
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	10,917,000	5,955,000
Fair Value, Measurements, Recurring | U.S. government agency securities | Total
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	10,917,000	5,955,000
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 1
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | U.S. Treasury securities | Level 2
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	2,527,000	4,043,000
Fair Value, Measurements, Recurring | U.S. Treasury securities | Total
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	2,527,000	4,043,000
Fair Value, Measurements, Recurring | Municipal debt securities | Level 1
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | Municipal debt securities | Level 2
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	1,061,000	3,924,000
Fair Value, Measurements, Recurring | Municipal debt securities | Total
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	1,061,000	3,924,000
Fair Value, Measurements, Recurring | Corporate debt securities | Level 1
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring | Corporate debt securities | Level 2
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	76,679,000	82,517,000
Fair Value, Measurements, Recurring | Corporate debt securities | Total
Assets, Fair Value Disclosure [Abstract]
AFS Securities, Fair Value Disclosure	$76,679,000	$82,517,000

Schedule_of_Available_for_Sale

Schedule of Available for Sale Securities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of available for sale securities [Line Items]
Restricted cash	$0	$100
Cash and cash equivalents [Abstract]
Cash and Cash Equivalents, Amortized Cost	24,257	22,615
Cash And Cash Equivalents, Gross Unrealized Gains	0	0
Cash And Cash Equivalents, Gross Unrealized Losses	0	0
Cash and Cash Equivalents, Fair Value Disclosure	24,257	22,615
Short-term Investments [Abstract]
AFS Securities, Amortized Cost Basis	91,245	93,724
Available-for-sale Securities, Gross Unrealized Gain1	23	9
Available-for-sale Securities, Gross Unrealized Loss1	-51	-87
AFS Securities, Fair Value Disclosure	91,217	93,646
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Cash, Cash Equiv. And S-T Investments, Amortized Cost	115,502	116,339
Cash, Cash Equiv. And S-T Investments, Gross Unrealized Gains	23	9
Cash, Cash Equiv. And S-T Investments, Gross Unrealized Losses	-51	-87
Cash, Cash Equiv. And S-T Investments, Fair Value Disclosure	115,474	116,261
Demand deposits and other cash
Cash and cash equivalents [Abstract]
Cash and Cash Equivalents, Amortized Cost	7,855	8,802
Cash And Cash Equivalents, Gross Unrealized Gains	0	0
Cash And Cash Equivalents, Gross Unrealized Losses	0	0
Cash and Cash Equivalents, Fair Value Disclosure	7,855	8,802
Money market funds
Cash and cash equivalents [Abstract]
Cash and Cash Equivalents, Amortized Cost	14,326	7,795
Cash And Cash Equivalents, Gross Unrealized Gains	0	0
Cash And Cash Equivalents, Gross Unrealized Losses	0	0
Cash and Cash Equivalents, Fair Value Disclosure	14,326	7,795
Commercial Paper in CE
Cash and cash equivalents [Abstract]
Cash and Cash Equivalents, Amortized Cost	400	1,365
Cash And Cash Equivalents, Gross Unrealized Gains	0	0
Cash And Cash Equivalents, Gross Unrealized Losses	0	0
Cash and Cash Equivalents, Fair Value Disclosure	400	1,365
U.S. government agency securities
Cash and cash equivalents [Abstract]
Cash and Cash Equivalents, Amortized Cost		100
Cash And Cash Equivalents, Gross Unrealized Gains		0
Cash And Cash Equivalents, Gross Unrealized Losses		0
Cash and Cash Equivalents, Fair Value Disclosure		100
Corporate Debt Securities
Cash and cash equivalents [Abstract]
Cash and Cash Equivalents, Amortized Cost	1,676	4,553
Cash And Cash Equivalents, Gross Unrealized Gains	0	0
Cash And Cash Equivalents, Gross Unrealized Losses	0	0
Cash and Cash Equivalents, Fair Value Disclosure	1,676	4,553
Commercial paper in STI
Short-term Investments [Abstract]
AFS Securities, Amortized Cost Basis	1,709	1,860
Available-for-sale Securities, Gross Unrealized Gain1	0	0
Available-for-sale Securities, Gross Unrealized Loss1	0	0
AFS Securities, Fair Value Disclosure	1,709	1,860
U.S. government agency securities
Short-term Investments [Abstract]
AFS Securities, Amortized Cost Basis	10,912	5,856
Available-for-sale Securities, Gross Unrealized Gain1	5	1
Available-for-sale Securities, Gross Unrealized Loss1		-2
AFS Securities, Fair Value Disclosure	10,917	5,855
U.S. Treasury securities
Short-term Investments [Abstract]
AFS Securities, Amortized Cost Basis	2,524	4,042
Available-for-sale Securities, Gross Unrealized Gain1	3	1
Available-for-sale Securities, Gross Unrealized Loss1	0	0
AFS Securities, Fair Value Disclosure	2,527	4,043
Municipal debt securities
Short-term Investments [Abstract]
AFS Securities, Amortized Cost Basis	1,061	3,922
Available-for-sale Securities, Gross Unrealized Gain1		2
Available-for-sale Securities, Gross Unrealized Loss1	0	0
AFS Securities, Fair Value Disclosure	1,061	3,924
Corporate Debt Securities
Short-term Investments [Abstract]
AFS Securities, Amortized Cost Basis	75,039	78,044
Available-for-sale Securities, Gross Unrealized Gain1	15	5
Available-for-sale Securities, Gross Unrealized Loss1	-51	-85
AFS Securities, Fair Value Disclosure	$75,003	$77,964

Contractual_maturities_of_cash

Contractual maturities of cash, cash equivalent and short-term investment (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Cash and cash equivalents (1)	$24,257	$22,615
Short-term investments	91,217	93,646
Cash, cash equivalents and short-term investments	115,474	116,261
Maturity up to one year
Schedule of Available-for-sale Securities [Line Items]
Cash and cash equivalents (1)	24,257	22,615
Short-term investments	80,522	76,917
Cash, cash equivalents and short-term investments	104,779	99,532
maturity between 1 and 2 years
Schedule of Available-for-sale Securities [Line Items]
Cash and cash equivalents (1)	0	0
Short-term investments	10,695	16,729
Cash, cash equivalents and short-term investments	$10,695	$16,729

Schedule_of_the_computation_of

Schedule of the computation of basic and diluted net income (loss) per share (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net loss	($4,487)	($6,389)
Denominator:
Weighted Average Number of Shares Outstanding, Basic and Diluted	25,667	25,047
Net loss per share
Earnings Per Share, Basic and Diluted	($0.17)	($0.26)

Schedule_of_antidilutive_secur

Schedule of antidilutive securities excluded from computation of earnings per share (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Options to purchase common stock, including ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,440	3,305
Common stock subject to repurchase
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1	7
Warrants to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	44	44
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,064	802

Schedule_of_FiniteLived_Intang

Schedule of Finite-Lived Intangible Assets (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,800	$5,800
Accumulated Amortization	3,749	3,569
Finite-Lived Intangible Assets, Net	2,051	2,231
Finite-Lived Intangible Assets, Useful Life
Intangible assets, gross	6,740	6,740
Intangible assets, net book value	2,991	3,171
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,710	2,710
Accumulated Amortization	1,773	1,693
Finite-Lived Intangible Assets, Net	937	1,017
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,520	2,520
Accumulated Amortization	1,775	1,722
Finite-Lived Intangible Assets, Net	745	798
Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	460	460
Accumulated Amortization	134	91
Finite-Lived Intangible Assets, Net	326	369
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	110	110
Accumulated Amortization	67	63
Finite-Lived Intangible Assets, Net	43	47
Minimum | Developed technology
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	4 years
Minimum | Customer relationships
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	7 years
Minimum | Noncompete Agreements
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	2 years
Minimum | Trademarks and trade names
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	4 years
Maximum | Developed technology
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	7 years
Maximum | Customer relationships
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	9 years
Maximum | Noncompete Agreements
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	4 years
Maximum | Trademarks and trade names
Finite-Lived Intangible Assets, Useful Life
Finite-lived intangible asset, useful life	7 years
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	940	$940

Future_amortization_schedule_D

Future amortization schedule (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Goodwill and intangible assets [Abstract]
Finite-Lived Intangibles, AmortExp, 2015	$547
Finite-Lived Intangibles, AmortExp, 2016	562
Finite-Lived Intangibles, AmortExp, 2017	394
Finite-Lived Intangibles, AmortExp, 2018	275
Finite-Lived Intangibles, AmortExp, 2019	229
Finite-Lived Intangibles, AmortExp, after 5th Year	44
Finite-Lived Intangible Assets, Net	$2,051	$2,231

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Goodwill	$9,988,000		$9,988,000
Intangibles - period amortization expense [Abstract]
Amortization expense	$200,000	$200,000

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Inventory, Net [Abstract]
Raw materials	$452	$759
Finished goods	2,244	2,703
Total inventories	$2,696	$3,462

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$16,162,000		$15,949,000
Less: Accumulated depreciation	-11,439,000		-10,827,000
Property and equipment, net	4,723,000		5,122,000
Depreciation, Depletion and Amortization [Abstract]
Depreciation	700,000	500,000
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	8,940,000		8,772,000
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	975,000		962,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	2,342,000		2,298,000
Manufacturing tools and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,840,000		3,795,000
Construction in process
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$65,000		$122,000

Investment_in_Sales_Type_Lease

Investment in Sales Type Leases (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Capital Leased Assets [Line Items]
Net Investment in Sales Type Leases, Future Minimum Payments-Gross	1,766	$1,882
Net Investment in Sales Type Leases, Deferred Income	-866	-962
Net Investment in Sales Type Leases	900	920
Net Investment in Sales Type Leases, Current	-616	-564
Net Investment in Sales Type Leases, Noncurrent	284	$356
Minimum
Capital Leased Assets [Line Items]
Lessors, Capital Leases, Term of contract	1 year 3 months
Maximum
Capital Leased Assets [Line Items]
Lessors, Capital Leases, Term of contract	4 years 0 months

Future_payments_sales_type_lea

Future payments- sales type leases (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Balance Sheet Components [Abstract]
Sales-type Leases, Future Minimum Payments-2015	$728
Sales-type Leases, Future Minimum Payments-2016	739
Sales-type Leases, Future Minimum Payments-2017	291
Net Investment in Sales Type Leases, Future Minimum Payments-Gross	$1,766	$1,882

Accrued_Liabilities_Details

Accrued Liabilities (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Accrued Liabilities, Current [Abstract]
Payroll and related expenses	$4,840	$7,009
Accrued payables	767	1,715
Deferred Rent Credit, Current	247	299
Lease financing, current portion	669	645
Product warranty	834	497
Customer Refund Liability, Current	195	283
Sales and use tax payable	324	293
Other	130	122
Total accrued payroll and other current liabilities	$8,006	$10,863

Schedule_of_Product_Liability_

Schedule of Product Liability (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Product warranty accrual, at the beginning of the period	$497	$840
Warranty expenses accrued	64	298
Product Warranty Accrual, Preexisting, Increase (Decrease)	358	51
Warranty settlements made	-85	-467
Product warranty accrual, at the end of period	$834	$722

Schedule_of_Future_Minimum_Ren

Schedule of Future Minimum Rental Payments for Operating Leases (Details) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Operating Leases, Future Minimum Payments Due, by FY
Remainder of 2014	$1,310
2015	610
2016	107
Total minimum lease payments	$2,027

Commitments_Narrative_Details

Commitments Narrative (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Unrecorded Unconditional Purchase Obligation [Line Items]
Operating Leases, Rent Expense, Net	$0.50	$0.50
Inventories
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation	$3		$1.90

Stock_Option_Activity_Details

Stock Option Activity (Details) (Stock Options, USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Stock Options
Number of Options (in shares):
Beginning balance	3,418,624
Options granted	51,930
Options exercised	-26,263
Options canceled	-76,244
Ending balance	3,368,047
Weighted Average Exercise Price (in dollars per share):
Beginning balance	$9.80
Options granted	$10.36
Options exercised	$4.02
Options canceled	$20.09
Ending balance	$9.62
Wtd avg remaining term, Outstanding	6 years 2 months 5 days	6 years 2 months 27 days
Aggregate intrinsic value, Outstanding	$11,068		$12,167

Summary_of_Equity_BSM_Assumpti

Summary of Equity B-S-M Assumptiuons (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Equity Option
Equity B-S-M Fair Value Assumptions
Expected Term (in years)	5 years 4 months 21 days	5 years 4 months 28 days
Volatility	41.80%	48.20%
Interest Rate	1.63%	1.59%
Dividend yield	0.00%	0.00%
2012 Employee Stock Purchase Plan | ESPP
Equity B-S-M Fair Value Assumptions
Expected Term (in years)	6 months	0 years 6 months
Volatility	57.80%	36.00%
Interest Rate	0.07%	0.10%
Dividend yield	0.00%	0.00%

Summary_of_Restricted_Stock_Ac

Summary of Restricted Stock Activity (Details) (Restricted Stock Units, USD $)	3 Months Ended
	Mar. 31, 2015
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Comp-other than options - Period for Recognition- Comp cost not yet rocognized	1 year 9 months
Number of Shares:
Beginning balance	1,062,590
Granted	72,537
Vested	-43,280
Forfeited	-27,536
Ending balance	1,064,311
Weighted Average Grant Date Fair Value per Share (in dollars per share):
Beginning balance	$13.79
Granted	$10.01
Vested	$19.77
Forfeited	$14.07
Ending balance	$13.28

Sharebased_Compensaton_Allocat

Share-based Compensaton Allocated to Expense Captions (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$2,594	$2,598
Cost of Sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	309	286
Research and Development Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	260	220
Selling and Marketing Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,034	967
General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$991	$1,125
Equity Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%

Narrative_Details

Narrative (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2015
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Unamortized Compensation Cost, Stock Options	$5.90
Uamortized Compensation Cost Not yet Recognized, Period Remaining, Options	2 years 8 months 12 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options	$8.40
Stock Comp-other than options - Period for Recognition- Comp cost not yet rocognized	1 year 9 months
2012 Stock Option Plan | Stock options and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Available for Grant	1,899,663
2012 Employee Stock Purchase Plan | ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares Available for Grant	539,095

Segments_Operating_Segments_De

Segments Operating Segments (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	Segments
Segment Reporting [Abstract]
Number of reportable segments	2
Revenue
Product	$12,462	$14,189
Service	11,356	10,487
Total revenue	23,818	24,676
Cost of revenue
Product	4,432	4,990
Service	4,851	4,814
Cost of Goods and Services Sold	9,283	9,804
Gross profit
Product	8,030	9,199
Service	6,505	5,673
Total gross profit	14,535	14,872
Calculation of pretax profit (loss) [Abstract]
Operating expenses	18,897	21,206
Interest (expense) income, net and other	-22	22
Loss before income taxes	($4,384)	($6,312)

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$103	$77

Business_Acquisition_PPA_Detai

Business Acquisition - PPA (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Jan. 13, 2014
In Thousands, unless otherwise specified
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill	$9,988	$9,988
Net assets of mVisum, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Business Combination, Receivables acquired			187
Goodwill			2,103
Total assets acquired including Goodwill			3,590
Business Combination, Deferred Revenue acquired			-90
Business Combination, Net assets acquired			3,500
Net assets of mVisum, Inc. | Developed technology
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Business Combination, Finite-Lived Intangibles acquired			830
Net assets of mVisum, Inc. | Noncompete Agreements
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Business Combination, Finite-Lived Intangibles acquired			260
Net assets of mVisum, Inc. | Customer relationships
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Business Combination, Finite-Lived Intangibles acquired			170
Net assets of mVisum, Inc. | Trademarks and trade names
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Business Combination, Finite-Lived Intangibles acquired			$40

Business_Acquisition_Narrative

Business Acquisition Narrative (Details) (USD $)	0 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Jan. 13, 2014	Mar. 31, 2015
Net assets of mVisum, Inc.
Business Acquisition [Line Items]
Payments to acquire businesses	$3.50
Weighted average useful life	5 years 8 months 1 day
Acquisition related costs	0.2
Future bonus compensation	$0.50
Minimum | Net assets of mVisum, Inc.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	4 years
Maximum | Net assets of mVisum, Inc.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life	7 years
Noncompete Agreements | Minimum
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		2 years
Noncompete Agreements | Maximum
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		4 years