Shutterfly (SFLY) 10-Q 6 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	1-May-14
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'SHUTTERFLY INC	'
Entity Central Index Key	'0001125920	'
Current Fiscal Year End Date	'--12-31	'
Entity Well-known Seasoned Issuer	'Yes	'
Entity Voluntary Filers	'No	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	38,525,254
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$314,918	$499,084
Short-term investments	24,115	0
Accounts receivable, net	14,536	21,641
Inventories	8,512	9,629
Deferred tax asset, current portion	20,471	26,942
Prepaid expenses and other current assets	44,719	21,260
Total current assets	427,271	578,556
Long-term investments	31,295	0
Property and equipment, net	171,400	155,727
Intangible assets, net	110,430	118,621
Goodwill	397,242	397,306
Deferred tax asset, net of current portion	520	520
Other assets	19,610	15,412
Total assets	1,157,768	1,266,142
Current liabilities:	'	'
Accounts payable	17,418	33,656
Accrued liabilities	42,466	107,448
Deferred revenue	26,640	24,114
Total current liabilities	86,524	165,218
Convertible senior notes, net	246,362	243,493
Deferred tax liability	37,814	42,995
Other liabilities	33,720	26,341
Total liabilities	404,420	478,047
Commitments and contingencies (Note 9)	'	'
Stockholders' equity:	'	'
Accumulated other comprehensive loss	-27	0
Common stock, $0.0001 par value; 100,000 shares authorized; 38,505 and 38,196 shares issued and outstanding on March 31, 2014 and December 31, 2013, respectively	4	4
Additional paid-in capital	805,979	771,875
Accumulated earnings/(deficit)	-52,608	16,216
Total stockholders' equity	753,348	788,095
Total liabilities and stockholders' equity	$1,157,768	$1,266,142

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Stockholders' equity:	'	'
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	38,505,000	38,196,000
Common stock, shares outstanding (in shares)	38,505,000	38,196,000

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENT OF INCOME (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Net revenues	$137,099	$116,708
Cost of net revenues	76,343	61,853
Gross profit	60,756	54,855
Operating expenses:	'	'
Technology and development	31,483	24,027
Sales and marketing	42,133	34,895
General and administrative	25,751	19,897
Total operating expenses	99,367	78,819
Loss from operations	-38,611	-23,964
Interest expense	-3,947	-139
Interest and other income, net	227	7
Loss before income taxes	-42,331	-24,096
Benefit from income taxes	8,117	11,691
Net loss	($34,214)	($12,405)
Net loss per share - basic and diluted (in dollars per share)	($0.89)	($0.33)
Weighted-average shares outstanding - basic and diluted (in shares)	38,503	37,034

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENT OF INCOME (Unaudited) (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cost of net revenues [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation	$1,002	$564
Technology and development [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation	2,424	1,932
Sales and marketing [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation	5,628	3,705
General and administrative [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation	$6,938	$5,337

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net loss	($34,214)	($12,405)
Unrealized gains (losses) on investments, net	-45	0
Tax (expense) benefit on unrealized gains (losses) on investments, net	18	0
Other comprehensive loss, net of tax	-27	0
Comprehensive loss	($34,241)	($12,405)

CONDENSED_CONSOLIDATED_STATEME3

CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net loss	($34,214)	($12,405)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Depreciation and amortization	14,222	9,227
Amortization of intangible assets	8,583	6,511
Amortization of debt discount and debt issuance costs	3,158	0
Stock-based compensation, net of forfeitures	15,992	11,538
Loss on disposal of property and equipment and rental assets	55	188
Deferred income taxes	1,309	3,387
Tax benefit from stock-based compensation	16,281	11,755
Excess tax benefits from stock-based compensation	-16,328	-12,279
Changes in operating assets and liabilities:	'	'
Accounts receivable, net	7,106	2,859
Inventories	1,117	186
Prepaid expenses and other current assets	-23,345	-28,349
Other assets	-5,484	-6,897
Accounts payable	-19,982	-13,944
Accrued and other liabilities	-68,226	-54,599
Deferred revenue	2,527	-337
Other non-current liabilities	-244	-345
Net cash used in operating activities	-97,473	-83,504
Cash flows from investing activities:	'	'
Acquisition of business and intangibles, net of cash acquired	0	-1,031
Purchases of property and equipment	-10,285	-15,033
Capitalization of software and website development costs	-4,326	-3,495
Purchases of investments	-54,850	0
Proceeds from sale of equipment and rental assets	128	0
Net cash used in investing activities	-69,333	-19,559
Cash flows from financing activities:	'	'
Proceeds from issuance of common stock upon exercise of stock options	1,358	12,390
Repurchases of common stock	-34,610	-2,241
Excess tax benefits from stock-based compensation	16,328	12,279
Principal payments of capital lease and financing obligations	-436	0
Net cash provided by / (used in) financing activities	-17,360	22,428
Net decrease in cash and cash equivalents	-184,166	-80,635
Cash and cash equivalents, beginning of period	499,084	245,088
Cash and cash equivalents, end of period	314,918	164,453
Supplemental schedule of non-cash activities	'	'
Net increase (decrease) in accrued purchases of property and equipment	6,134	-4,201
Net increase in accrued capitalized software and website development costs	786	0
Increase in estimated fair market value of building under build-to-suit leases	7,998	2,716
Amount due from adjustment of net working capital from acquired business	$110	$465

The_Company_and_Summary_of_Sig

The Company and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
The Company and Summary of Significant Accounting Policies	'
	The Company and Summary of Significant Accounting Policies
	Shutterfly, Inc., (the “Company” or “Shutterfly”) was incorporated in the state of Delaware in 1999 and began its services in December 1999. The Company is the leading manufacturer and digital retailer of high-quality personalized products and services offered through a family of lifestyle brands. The Company provides customers a full range of products and services to organize and archive digital images; share pictures; order prints and create an assortment of personalized items such as photo books, greeting cards and stationery and calendars. Shutterfly also operates a premier online marketplace for high-quality photographic and video equipment rentals. The Company also provides enterprise services; printing and shipping of direct marketing and other variable data print products and formats. The Company is headquartered in Redwood City, California.
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and, accordingly, do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The accompanying unaudited condensed consolidated financial statements include the accounts of Shutterfly, Inc. and its wholly owned subsidiaries. In the opinion of management, all adjustments, consisting primarily of normal recurring accruals, considered necessary for a fair statement of the Company’s results of operations for the interim periods reported and of its financial condition as of the date of the interim balance sheet have been included. Operating results for the three months ended March 31, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014, or for any other period.
	The December 31, 2013 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2013 included in the Company’s Annual Report on Form 10-K.
	Fair Value
	The Company records its financial assets and liabilities at fair value. The accounting standard for fair value provides a framework for measuring fair value, clarifies the definition of fair value, and expands disclosures regarding fair value measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the reporting date. The accounting standard establishes a three-tier hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value:
	Level 1 – Quoted prices in active markets for identical assets or liabilities.
	Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Investments
	Investments, which may include agency bonds and corporate debt securities, are classified as available-for-sale and are reported at fair value using the specific identification method. Unrealized gains and losses are excluded from earnings and reported as a component of other comprehensive income (loss), net of related estimated tax provisions or benefits. Investments whose maturity dates are less than twelve months are classified as short-term, and those with maturity dates greater than twelve months are classified as long-term.
	The Company assesses whether an other-than-temporary impairment loss on its investments has occurred due to declines in fair value or other market conditions. With respect to the Company's debt securities, this assessment takes into account the severity and duration of the decline in value, its intent to sell the security, whether it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis, and whether it expects to recover the entire amortized cost basis of the security (that is, whether a credit loss exists). The Company did not recognize an other-than-temporary impairment loss on its investments in the three months ended March 31, 2014.
	Income Taxes
	The Company uses the liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized by applying the statutory tax rates in effect in the years in which the differences between the financial reporting and tax filing bases of existing assets and liabilities are expected to reverse.
	Valuation allowances are established when necessary to reduce deferred tax assets to the amounts expected to be realized from future taxable income. The Company's determination of its valuation allowance is based upon a number of assumptions, judgments, and estimates, including forecasted earnings, future taxable income, and the relative proportions of revenue and income before taxes in each jurisdiction.
	The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. The Company is required to make subjective assumptions and judgments regarding its income tax exposures. Interpretations and guidance surrounding income tax laws and regulations change over time. As such, changes in the Company's subjective assumptions and judgments can materially affect amounts recognized in the consolidated balance sheets and statements of income.
	The Company's policy is to recognize interest and /or penalties related to all tax positions in income tax expense. To the extent that accrued interest and penalties do not ultimately become payable, amounts accrued will be reduced and reflected as a reduction of the overall income tax provision in the period that such determination is made. No interest and penalties were accrued as of March 31, 2014 and December 31, 2013.
	The Company is subject to taxation in jurisdictions within the United States and Israel.
	Recent Accounting Pronouncements
	No new accounting standards have been adopted since the Company filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2013. The Company does not believe that any new accounting pronouncements not yet effective will have a material impact on the Company's financial statements once adopted.

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2014
Share-based Compensation [Abstract]	'
Stock-Based Compensation	'
	Stock-Based Compensation
	Stock Option Activity
	A summary of the Company’s stock option activity for the three months ended March 31, 2014 is as follows (share numbers and aggregate intrinsic values in thousands):
		Number of		Weighted		Weighted	Aggregate
		Options		Average		Average	Intrinsic
		Outstanding		Exercise		Contractual	Value
				Price		Term (Years)
	Balances, December 31, 2013	616		$	23.1
	Granted	—		—
	Exercised	(77	)	17.64
	Forfeited, cancelled or expired	(9	)	31.88
	Balances, March 31, 2014	530		$	23.75	5.2	$	10,620
	Options vested and expected to vest at March 31, 2014	522		$	23.62	5.1	$	10,530
	Options vested at March 31, 2014	411		$	21.13	4.5	$	9,243
	During the three months ended March 31, 2014, the Company did not grant any options. The total intrinsic value of options exercised during the three months ended March 31, 2014 was $2.5 million.  Net cash proceeds from the exercise of stock options were $1.4 million for the three months ended March 31, 2014.
	Employee stock-based compensation expense associated with options recognized in the three months ended March 31, 2014 and 2013, was calculated based on awards ultimately expected to vest and has been reduced for estimated forfeitures. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
	Restricted Stock Units
	The Company grants restricted stock units (“RSUs”) to its employees under the provisions of the 2006 Plan and inducement awards to certain new employees upon hire in accordance with NASDAQ Listing Rule 5635(c)(4). The cost of RSUs is determined using the fair value of the Company’s common stock on the date of grant. RSUs typically vest and are settled annually, based on a three or four year total vesting term. Compensation cost associated with RSUs is amortized on a straight-line basis over the requisite service period.
	Restricted Stock Unit Activity
	A summary of the Company’s RSU activity for the three months ended March 31, 2014, is as follows (share numbers in thousands):
		Number of		Weighted
		Units		Average
		Outstanding		Grant Date
				Fair Value
	Awarded and unvested, December 31, 2013	3,862		$	38.59
	Granted	975		47.39
	Vested	(897	)	35.69
	Forfeited	(183	)	43.11
	Awarded and unvested, March 31, 2014	3,757		$	41.34
	RSUs expected to vest, March 31, 2014	3,316
	Included in the RSU grants for the three months ended March 31, 2014, are 341,000 RSUs that have both performance criteria tied to the Company’s 2014 financial performance and four year service criteria, as well as grants made to the CEO that vest upon the achievement of multi-year financial performance-based and shareholder return-based goals (“PBRSUs”). Compensation cost associated with these PBRSUs is recognized on an accelerated attribution model and ultimately based on whether or not satisfaction of the performance criteria is probable. If in the future, situations indicate that the performance criteria are not probable, then no further compensation cost will be recorded and any previous costs will be reversed.
	At March 31, 2014, the Company had $117.4 million of total unrecognized compensation expense, net of estimated forfeitures, related to stock options, RSUs and PBRSUs that will be recognized over a weighted-average period of approximately two years.

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 attributed to common shares is computed by dividing the net loss attributable to common shares for the period by the weighted average number of common shares outstanding during the period.
	Diluted net loss per share attributed to common shares is computed by dividing the net loss attributable to common shares for the period by the weighted average number of common and potential common shares outstanding during the period, if the effect of each class of potential common shares is dilutive. Potential common shares include restricted stock units and incremental shares of common stock issuable upon the exercise of stock options.
	A summary of the net loss per share for the three months ended March 31, 2014 and 2013 is as follows (in thousands, except per share amounts):
		Three Months Ended
		March 31,
		2014			2013
	Net loss per share:
	Numerator
	Net loss	$	(34,214	)	$	(12,405	)
	Denominator for basic and diluted net loss per share
	Weighted-average common shares outstanding	38,503			37,034
	Net loss per share — basic and diluted	$	(0.89	)	$	(0.33	)

Investments

Investments	3 Months Ended
	Mar. 31, 2014
Investments [Abstract]	'
Investments	'
	Investments
	At March 31, 2014, the estimated fair value of short-term and long-term investments classified as available for sale, are as follows (in thousands):
		March 31, 2014
		Gross Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	Short-term investments
	Corporate debt securities	$	21,143	$	1	$	(26	)	$	21,118
	Agency securities	3,000		—		(3		)	2,997
		$	24,143	$	1	$	(29	)	$	24,115
	Long-term investments
	Corporate debt securities	$	27,309	$	3	$	(17	)	$	27,295
	Agency securities	4,003		—		(3		)	4,000
		$	31,312	$	3	$	(20	)	$	31,295
	The Company had no short-term or long-term investments that have been in a continuous unrealized loss position for more than 12 months as of March 31, 2014 and thus no impairments recorded in the period. The Company had no realized gains or losses during the three months ended March 31, 2014.
	The following table summarizes the contractual maturities of the Company's investments as of March 31, 2014 (in thousands):
		March 31, 2014
	One year or less	$	24,115
	One year through two years	31,295
		$	55,410
	Actual maturities may differ from the contractual maturities because borrowers may have certain prepayment conditions.

Fair_Value_Measurement

Fair Value Measurement	3 Months Ended
	Mar. 31, 2014
Fair Value Measurement [Abstract]	'
Fair Value Measurement	'
	Fair Value Measurement
	Cash Equivalents and Investments
	The Company measures the fair value of money market funds and investments based on quoted prices in active markets for identical assets or liabilities. All other financial instruments were valued either based on recent trades of securities in inactive markets or based on quoted market prices of similar instruments and other significant inputs derived from or corroborated by observable market data. The Company did not hold any cash equivalents or investments categorized as Level 3 as of March 31, 2014.
	The following table summarizes, by major security type, the Company's cash equivalents and investments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands):
		Total Estimated Fair Value as of
		March 31, 2014		December 31, 2013
	Level 1 Securities:
	Money market funds	$	14,392	$	—
	Level 2 Securities:
	Agency securities	6,997		—
	Corporate debt securities	48,413		—
	Total cash equivalents and investments	$	69,802	$	—
	The Company did not have any money market funds or investments as of December 31, 2013.
	Convertible Senior Notes
	As of March 31, 2014, the fair value of the Notes, which was determined based on inputs that are observable in the market or that could be derived from, or corroborated with, observable market data, including our stock price, interest rates and credit spread (Level 2) were as follows (in thousands):
		Total Estimated Fair Value as of
		March 31, 2014		December 31, 2013
	Convertible Senior Notes	$	244,977	$	237,066

Balance_Sheet_Components

Balance Sheet Components	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Balance Sheet Components	'
	Balance Sheet Components
	Prepaid Expenses and Other Current Assets
		March 31,				December 31,
		2014				2013
		(in thousands)
	Intra-period deferred tax asset	$	25,709			$	—
	Deferred costs	5,492				4,915
	Prepaid service contracts – current portion	2,095				5,044
	Other prepaid expenses and current assets	11,423				11,301
		$	44,719			$	21,260
	Intra-period deferred tax asset represents the cumulative income tax benefit recorded as of the balance sheet date, which will offset against taxes payable or become a component of deferred taxes on a full year basis.
	Other Assets
		March 31,			December 31,
		2014			2013
		(in thousands)
	Other assets	19,610			15,412
	Other assets includes the long-term portion of intellectual property prepaid royalties, the long-term portion of issuance costs related to the Company's 0.25% Convertible Notes, the long-term portion of prepaid service contracts, and deposits on long-term leases and other contracts.
	Property and Equipment, Net
		March 31,				December 31,
		2014				2013
		(in thousands)
	Computer and other equipment	$	194,616			$	182,491
	Software	21,137				19,719
	Leasehold improvements	18,267				17,702
	Buildings under build-to-suit leases	24,450				16,452
	Rental equipment	12,961				11,943
	Furniture and fixtures	9,008				8,391
	Capitalized software and website development costs	71,799				66,196
		352,238				322,894
	Less: Accumulated depreciation and amortization	(180,838		)		(167,167		)
	Net property and equipment	$	171,400			$	155,727
	Building value of $24.5 million under build-to-suit leases represents the estimated fair market value of buildings under build-to-suit leases of which the Company is the "deemed owner" for accounting purposes only. See Note 9 - Commitments and Contingencies for further discussion of the Company's build-to-suit leases.
	Included within Computer and other equipment is approximately $6.8 million of capital lease obligations for various pieces of manufacturing facility and computer equipment. Accumulated depreciation of assets under capital lease totaled $1.1 million at March 31, 2014.
	Rental equipment includes camera lenses, camera bodies, video equipment and other camera peripherals which are rented through the BorrowLenses website.
	Depreciation and amortization expense totaled $14.2 million and $9.2 million for the three months ended March 31, 2014 and 2013, respectively.
	Accrued Liabilities
		March 31,				December 31,
		2014				2013
		(in thousands)
	Accrued compensation	$	11,633			$	14,872
	Accrued marketing expenses	8,794				26,203
	Accrued production costs	5,907				34,525
	Accrued purchases	4,562				3,723
	Accrued income and sales taxes	2,917				16,465
	Accrued consulting	2,383				4,548
	Capital lease obligations	1,523				1,530
	Accrued other	4,747				5,582
		$	42,466			$	107,448
	Other Liabilities
		March 31,			December 31,
		2014			2013
		(in thousands)
	Other liabilities	33,720			26,341
	Other liabilities includes the long-term portion of capital lease obligations, deferred rent, and financing obligations related to the Company's build-to-suit leases.

Convertible_Senior_Notes

Convertible Senior Notes	3 Months Ended
	Mar. 31, 2014
Convertible Senior Notes Disclosure [Abstract]	'
Convertible Senior Notes	'
	Convertible Senior Notes
	0.25% Convertible Senior Notes Due May 15, 2018
	In May 2013, the Company issued $300.0 million aggregate principal amount of 0.25% convertible senior notes (the "Notes") due May 15, 2018, unless earlier purchased by the Company or converted. Interest is payable semiannually in arrears on May 15 and November 15 of each year, commencing on November 15, 2013.
	The Notes are governed by an Indenture between the Company, as issuer, and Wells Fargo Bank, National Association, as trustee. The Notes are unsecured and rank senior in right of payment to the Company's future indebtedness that is expressly subordinated in right of payment to the Notes and rank equal in right of payment to the Company's existing and future liabilities that are not so subordinated and are effectively subordinated in right of payment to any of the Company's cash equal to the principal amount of the Notes, and secured indebtedness to the extent of the value of the assets securing such indebtedness and are structurally subordinated to all existing and future indebtedness and liabilities incurred by the Company's subsidiaries.
	Upon conversion, the Company will pay or deliver, as the case may be, cash, shares of the Company's common stock or a combination of cash and shares of common stock, at the Company's election.
	The initial conversion rate is 15.5847 shares of common stock per $1,000 principal amount of Notes. The initial conversion price is $64.17 per share of common stock. Throughout the term of the Notes, the conversion rate may be adjusted upon the occurrence of certain events. Holders of the Notes will not receive any cash payment representing accrued and unpaid interest upon conversion of a Note. Accrued but unpaid interest will be deemed to be paid in full upon conversion rather than cancelled, extinguished or forfeited. Holders may convert their Notes only under the following circumstances:
	•	during any calendar quarter commencing after the calendar quarter ending on September 30, 2013 (and only during such calendar quarter), if the last reported sale price of the Company's common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day;
	•	during the five business day period after any ten consecutive trading day period (the “Notes Measurement Period”) in which the "trading price" (as the term is defined in the Indenture) per $1,000 principal amount of notes for each trading day of such Notes Measurement Period was less than 98% of the product of the last reported sale price of the Company's common stock on such trading day and the conversion rate on each such trading day;
	•	upon the occurrence of specified corporate events; or
	•	at any time on or after December 15, 2017 until the close of business on the second scheduled trading immediately preceding the maturity date.
	As of March 31, 2014, the Notes are not yet convertible.
	In accounting for the issuance of the Notes, the Company separated the Notes into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar liability that does not have an associated convertible feature. The carrying amount of the equity component representing the conversion option was determined by deducting the fair value of the liability component from the face value of the Notes as a whole. The excess of the principal amount of the liability component over its carrying amount (“debt discount”) is amortized to interest expense over the term of the Notes. The equity component is not remeasured as long as it continues to meet the conditions for equity classification.
	In accounting for the transaction costs related to the Note issuance, the Company allocated the total amount incurred to the liability and equity components based on their relative values. Issuance costs attributable to the liability component, totaling $6.4 million, are being amortized to expense over the term of the Notes, and issuance costs attributable to the equity component, totaling $1.7 million, were netted with the equity component in stockholders' equity. Additionally, the Company recorded a deferred tax asset of $0.6 million on a portion of the equity component transaction costs which are deductible for tax purposes.
	Concurrently with the Note issuance, the Company repurchased 0.6 million shares of common stock for approximately $30.0 million.
	The Notes consist of the following (in thousands):
			March 31, 2014			December 31, 2013
	Liability component:
	Principal		$	300,000		$	300,000
	Less: debt discount, net of amortization		(53,638		)	(56,507		)
	Net carrying amount		$	246,362		$	243,493
	Equity component (1)		$	63,510		$	63,510
	(1) Recorded in the consolidated balance sheets within additional paid-in capital, net of the $1.7 million of issuance costs in equity.
	The following table sets forth total interest expense recognized related to the Notes (in thousands):
			Three Months Ended March 31,
			2014			2013
	0.25% coupon		$	188		$	—
	Amortization of debt issuance costs		288			—
	Amortization of debt discount		2,870			—
			$	3,346		$	—
	Note Hedge
	To minimize the impact of potential economic dilution upon conversion of the Notes, the Company entered into convertible note hedge transactions with respect to its common stock (the “Note Hedge”). In May 2013, the Company paid an aggregate amount of $63.5 million for the Note Hedge. The Note Hedge will expire upon maturity of the Notes. The Note Hedge is intended to offset the potential dilution upon conversion of the Notes and/or offset any cash payments the Company is required to make in excess of the principal amount upon conversion of the Notes in the event that the market value per share of the Company's common stock, as measured under the Notes, is greater than the strike price of the Note Hedge, which initially corresponds to the conversion price of the Notes and is subject to anti-dilution adjustments substantially similar to those applicable to the conversion rate of the Notes.
	Warrant
	Separately, in May 2013, the Company entered into warrant transactions (the “Warrant”), whereby the Company sold warrants to acquire shares of the Company's common stock at a strike price of $83.18 per share. The Company received aggregate proceeds of $43.6 million from the sale of the Warrant. If the average market value per share of the Company's common stock for the reporting period, as measured under the Warrant, exceeds the strike price of the Warrant, the Warrant will have a dilutive effect on the Company's earnings per share. The Warrant is a separate transaction, entered into by the Company and is not part of the Notes or the Note Hedge, and has been accounted for as part of additional paid-in capital. Holders of the Notes and Note Hedge will not have any rights with respect to the Warrant.

Share_Repurchase_Program

Share Repurchase Program	3 Months Ended
	Mar. 31, 2014
Share Repurchase Program [Abstract]	'
Share Repurchase Program	'
	Share Repurchase Program
	On October 24, 2012, the Company's Board of Directors conditionally authorized and the Audit Committee approved a share repurchase program for up to $60.0 million of the Company's common stock. On February 6, 2014, the Company's Board of Directors approved an increase to the program, authorizing the Company to repurchase up to $100.0 million of the Company's common stock in addition to any amounts repurchased as of that date. The share repurchase program is subject to prevailing market conditions and other considerations; does not require Shutterfly to repurchase any dollar amount or number of shares; and may be suspended or discontinued at any time. The share repurchase authorization, which was effective immediately, permits the Company to effect repurchases for cash from time to time through open market, privately negotiated or other transactions, including pursuant to trading plans established in accordance with Rules 10b5-1 and 10b-18 of the Securities Exchange Act of 1934, as amended, or by a combination of such methods.
	In the three months ended March 31, 2014, the Company repurchased 665,035 shares of its outstanding common stock at an average price of $52.04 per share for a total of $34.6 million.
	In 2013, the Company repurchased 70,313 shares of its outstanding common stock at an average price of $31.87 per share for a total of $2.2 million.
	All repurchased shares of common stock have been retired.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Build-to-Suit Leases
	During the year ended December 31, 2013, the Company executed a lease for a new 217,000 square foot production facility in Shakopee, Minnesota. This facility will provide additional production capacity, and is expected to become operational in the third quarter of 2014. Both the landlord and the Company will incur costs to construct the facility according to the Company's operating specifications, and as a result, the Company has concluded that it is the “deemed owner” of the building (for accounting purposes only) during the construction period. During the quarter ended March 31, 2014 and the year ended December 31, 2013, the landlord incurred $8.0 million and $7.0 million of building construction costs which the Company has recorded as an asset, with a corresponding construction financing obligation, which is recorded as a component of other non-current liabilities. The Company will increase the asset and financing obligation as additional building uplift costs are incurred by the landlord during the construction period.
	Also during the year ended December 31, 2013 the Company executed a lease for a new 217,000 square foot production facility in Tempe, Arizona. This facility will consolidate all of the Company's locations in the greater Phoenix area, including the recently acquired R&R Images facility, as well as offer flexibility for future expansion, and is expected to become operational during 2015. Both the landlord and the Company will incur costs to construct the facility according to the Company's operating specifications, and as a result, the Company has concluded that it is the “deemed owner” of the building (for accounting purposes only) during the construction period. As of March 31, 2014, construction had not yet begun, and no amounts have been recorded. The Company will record the asset and financing obligation as building uplift costs are incurred by the landlord during the construction period, which is expected to begin in 2014.
	Upon completion of construction of these facilities, the Company evaluates the de-recognition of the asset and liability under the provisions of ASC 840.40 Leases - Sale-Leaseback Transactions. However, if the Company does not comply with the provisions needed for sale-leaseback accounting, the lease will be accounted for as a financing obligation and lease payments will be attributed to (1) a reduction of the principal financing obligation; (2) imputed interest expense; and (3) land lease expense (which is considered an operating lease and a component of cost of goods sold) representing an imputed cost to lease the underlying land of the facility. In addition, the underlying building asset will be depreciated over the building's estimated useful life which is generally 30 years. And at the conclusion of the lease term, the Company would de-recognize both the net book values of the asset and financing obligation.
	Indemnifications
	In the normal course of business, the Company enters into contracts and agreements that contain a variety of representations and warranties and provide for general indemnifications. The Company’s exposure under these agreements is unknown because it involves future claims that may be made against the Company, but have not yet been made. To date, the Company has not paid any claims or been required to defend any action related to its indemnification obligations. However, the Company may record charges in the future as a result of these indemnification obligations.
	Contingencies
	From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of its business activities. The Company accrues contingent liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated.
	Syndicated Credit Facility
	On November 22, 2011, the Company entered into a credit agreement (“Credit Agreement”) with J.P. Morgan Securities LLC, Wells Fargo Securities, LLC, Fifth Third Bank, Silicon Valley Bank, US Bank and Citibank, N.A. (“the Banks”). JPMorgan Chase Bank, N.A. acted as administrative agent in the Credit Agreement. The Credit Agreement is for five years and provides for a $125.0 million senior secured revolving credit facility (the “credit facility”) and if requested by the Company, the Banks may increase the credit facility by $75.0 million subject to certain conditions. In December 2013, the Company requested and received the entire incremental amount for a total credit facility of $200.0 million. As part of the expansion, Bank of America, N.A. and Morgan Stanley Bank, N.A. joined the syndicate. From inception through March 31, 2014, the Company has not drawn on the credit facility.
	At the Company’s option, loans under the Facility will bear stated interest based on the Base Rate or Adjusted LIBO Rate, in each case plus the Applicable Rate (respectively, as defined in the Credit Agreement). The Base Rate will be, for any day, the highest of (a) 1/2 of 1% per annum above the Federal Funds Effective Rate (as defined in the Credit Agreement), (b) JPMorgan Chase Bank’s prime rate and (c) the Adjusted LIBO Rate for a term of one month plus 1.00%. Eurodollar borrowings may be for one, two, three or six months (or such period that is 12 months or less, requested by Intersil and consented to by all the Lenders) and will be at an annual rate equal to the period-applicable Eurodollar Rate plus the Applicable Rate. The Applicable Rate for all revolving loans is based on a pricing grid ranging from 0.05% to 1.25% per annum for Base Rate loans and 1.50% to 2.25% for Adjusted LIBO Rate loans based on the Company’s Leverage Ratio (as defined in the Credit Agreement).
	On May 10, 2013, the Company amended the Credit Agreement by and among the Company and the Banks to (i) permit the issuance of the Notes and the related Note Hedge and Warrant, (ii) amend certain of the restrictive covenants set forth in the Credit Agreement, (iii) increase the Leverage Ratio (as defined the Credit Agreement) to be maintained by the Company to be at or below 3.50 to 1.00, and (iv) add a covenant requiring that the Company not permit its Senior Secured Leverage Ratio (as defined in the Credit Agreement) to exceed 1.60 to 1.00. Unchanged from the initial credit agreement, the Credit Agreement contains customary representations and warranties, affirmative and negative covenants, and events of default. Also, the Company may not permit the ratio of its Consolidated EBITDA for any period of four consecutive fiscal quarters to its interest and rental expense and the amount of scheduled principal payments on long-term debt, for the same period, to be less than 2.50 to 1.00. As of March 31, 2014, the Company is in compliance with these covenants.
	Amounts repaid under the Facility may be reborrowed. The revolving loan facility matures on the fifth anniversary of its closing and is payable in full upon maturity. The Company intends to use the new Facility from time to time for general corporate purposes, working capital and potential acquisitions.
	Legal Matters
	The Company is involved in a number of judicial and administrative proceedings that are incidental to its business. Although adverse decisions (or settlements) may occur in one or more of these cases, it is not possible to estimate the possible loss or losses from each of these cases. The final resolution of these lawsuits, individually or in the aggregate, is not expected to have a material adverse effect on the Company's business, financial position or results of operations.
	For all cases, at each reporting period, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under the provisions of the authoritative guidance that addresses accounting for contingencies. In such cases, the Company accrues for the amount, or if a range, the Company accrues the low end of the range as a component of legal expense. The Company monitors developments in these legal matters that could affect the estimate the Company had previously accrued. There are no amounts accrued which the Company believes would be material to its financial position and results of operations.

The_Company_and_Summary_of_Sig1

The Company and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and, accordingly, do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The accompanying unaudited condensed consolidated financial statements include the accounts of Shutterfly, Inc. and its wholly owned subsidiaries. In the opinion of management, all adjustments, consisting primarily of normal recurring accruals, considered necessary for a fair statement of the Company’s results of operations for the interim periods reported and of its financial condition as of the date of the interim balance sheet have been included. Operating results for the three months ended March 31, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014, or for any other period.
	The December 31, 2013 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2013 included in the Company’s Annual Report on Form 10-K.
Fair Value	'
	Fair Value
	The Company records its financial assets and liabilities at fair value. The accounting standard for fair value provides a framework for measuring fair value, clarifies the definition of fair value, and expands disclosures regarding fair value measurements. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in an orderly transaction between market participants at the reporting date. The accounting standard establishes a three-tier hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value:
	Level 1 – Quoted prices in active markets for identical assets or liabilities.
	Level 2 – Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3 – Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
Investments	'
	Investments
	Investments, which may include agency bonds and corporate debt securities, are classified as available-for-sale and are reported at fair value using the specific identification method. Unrealized gains and losses are excluded from earnings and reported as a component of other comprehensive income (loss), net of related estimated tax provisions or benefits. Investments whose maturity dates are less than twelve months are classified as short-term, and those with maturity dates greater than twelve months are classified as long-term.
	The Company assesses whether an other-than-temporary impairment loss on its investments has occurred due to declines in fair value or other market conditions. With respect to the Company's debt securities, this assessment takes into account the severity and duration of the decline in value, its intent to sell the security, whether it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis, and whether it expects to recover the entire amortized cost basis of the security (that is, whether a credit loss exists). The Company did not recognize an other-than-temporary impairment loss on its investments in the three months ended March 31, 2014.
Income Taxes	'
	Income Taxes
	The Company uses the liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized by applying the statutory tax rates in effect in the years in which the differences between the financial reporting and tax filing bases of existing assets and liabilities are expected to reverse.
	Valuation allowances are established when necessary to reduce deferred tax assets to the amounts expected to be realized from future taxable income. The Company's determination of its valuation allowance is based upon a number of assumptions, judgments, and estimates, including forecasted earnings, future taxable income, and the relative proportions of revenue and income before taxes in each jurisdiction.
	The Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in a tax return. The application of income tax law is inherently complex. Laws and regulations in this area are voluminous and are often ambiguous. The Company is required to make subjective assumptions and judgments regarding its income tax exposures. Interpretations and guidance surrounding income tax laws and regulations change over time. As such, changes in the Company's subjective assumptions and judgments can materially affect amounts recognized in the consolidated balance sheets and statements of income.
	The Company's policy is to recognize interest and /or penalties related to all tax positions in income tax expense. To the extent that accrued interest and penalties do not ultimately become payable, amounts accrued will be reduced and reflected as a reduction of the overall income tax provision in the period that such determination is made. No interest and penalties were accrued as of March 31, 2014 and December 31, 2013.
	The Company is subject to taxation in jurisdictions within the United States and Israel.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	No new accounting standards have been adopted since the Company filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2013. The Company does not believe that any new accounting pronouncements not yet effective will have a material impact on the Company's financial statements once adopted.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Share-based Compensation [Abstract]	'
Summary of the status of the company's stock option plan	'
	A summary of the Company’s stock option activity for the three months ended March 31, 2014 is as follows (share numbers and aggregate intrinsic values in thousands):
		Number of		Weighted		Weighted	Aggregate
		Options		Average		Average	Intrinsic
		Outstanding		Exercise		Contractual	Value
				Price		Term (Years)
	Balances, December 31, 2013	616		$	23.1
	Granted	—		—
	Exercised	(77	)	17.64
	Forfeited, cancelled or expired	(9	)	31.88
	Balances, March 31, 2014	530		$	23.75	5.2	$	10,620
	Options vested and expected to vest at March 31, 2014	522		$	23.62	5.1	$	10,530
	Options vested at March 31, 2014	411		$	21.13	4.5	$	9,243
Summary of company restricted stock unit activity	'
	A summary of the Company’s RSU activity for the three months ended March 31, 2014, is as follows (share numbers in thousands):
		Number of		Weighted
		Units		Average
		Outstanding		Grant Date
				Fair Value
	Awarded and unvested, December 31, 2013	3,862		$	38.59
	Granted	975		47.39
	Vested	(897	)	35.69
	Forfeited	(183	)	43.11
	Awarded and unvested, March 31, 2014	3,757		$	41.34
	RSUs expected to vest, March 31, 2014	3,316

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Net loss per share	'
	A summary of the net loss per share for the three months ended March 31, 2014 and 2013 is as follows (in thousands, except per share amounts):
		Three Months Ended
		March 31,
		2014			2013
	Net loss per share:
	Numerator
	Net loss	$	(34,214	)	$	(12,405	)
	Denominator for basic and diluted net loss per share
	Weighted-average common shares outstanding	38,503			37,034
	Net loss per share — basic and diluted	$	(0.89	)	$	(0.33	)

Investments_Tables

Investments (Tables)	3 Months Ended
	Mar. 31, 2014
Investments [Abstract]	'
Fair value of short and long-term investments classified as available for sale	'
	At March 31, 2014, the estimated fair value of short-term and long-term investments classified as available for sale, are as follows (in thousands):
		March 31, 2014
		Gross Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	Short-term investments
	Corporate debt securities	$	21,143	$	1	$	(26	)	$	21,118
	Agency securities	3,000		—		(3		)	2,997
		$	24,143	$	1	$	(29	)	$	24,115
	Long-term investments
	Corporate debt securities	$	27,309	$	3	$	(17	)	$	27,295
	Agency securities	4,003		—		(3		)	4,000
		$	31,312	$	3	$	(20	)	$	31,295
Estimated fair values of short and long-term investments classified by date of contractual maturity	'
	The following table summarizes the contractual maturities of the Company's investments as of March 31, 2014 (in thousands):
		March 31, 2014
	One year or less	$	24,115
	One year through two years	31,295
		$	55,410

Fair_Value_Measurement_Tables

Fair Value Measurement (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurement [Abstract]	'
Fair value, assets measured on recurring basis	'
	The following table summarizes, by major security type, the Company's cash equivalents and investments that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy (in thousands):
		Total Estimated Fair Value as of
		March 31, 2014		December 31, 2013
	Level 1 Securities:
	Money market funds	$	14,392	$	—
	Level 2 Securities:
	Agency securities	6,997		—
	Corporate debt securities	48,413		—
	Total cash equivalents and investments	$	69,802	$	—
Fair value, liabilities measured on a recurring basis	'
	As of March 31, 2014, the fair value of the Notes, which was determined based on inputs that are observable in the market or that could be derived from, or corroborated with, observable market data, including our stock price, interest rates and credit spread (Level 2) were as follows (in thousands):
		Total Estimated Fair Value as of
		March 31, 2014		December 31, 2013
	Convertible Senior Notes	$	244,977	$	237,066

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Schedule of prepaid expenses and other current assets	'
	Prepaid Expenses and Other Current Assets
		March 31,				December 31,
		2014				2013
		(in thousands)
	Intra-period deferred tax asset	$	25,709			$	—
	Deferred costs	5,492				4,915
	Prepaid service contracts – current portion	2,095				5,044
	Other prepaid expenses and current assets	11,423				11,301
		$	44,719			$	21,260
Schedule of other noncurrent assets	'
	Other Assets
		March 31,			December 31,
		2014			2013
		(in thousands)
	Other assets	19,610			15,412
Schedule of property and equipment	'
	Property and Equipment, Net
		March 31,				December 31,
		2014				2013
		(in thousands)
	Computer and other equipment	$	194,616			$	182,491
	Software	21,137				19,719
	Leasehold improvements	18,267				17,702
	Buildings under build-to-suit leases	24,450				16,452
	Rental equipment	12,961				11,943
	Furniture and fixtures	9,008				8,391
	Capitalized software and website development costs	71,799				66,196
		352,238				322,894
	Less: Accumulated depreciation and amortization	(180,838		)		(167,167		)
	Net property and equipment	$	171,400			$	155,727
Schedule of accrued liabilities	'
	Accrued Liabilities
		March 31,				December 31,
		2014				2013
		(in thousands)
	Accrued compensation	$	11,633			$	14,872
	Accrued marketing expenses	8,794				26,203
	Accrued production costs	5,907				34,525
	Accrued purchases	4,562				3,723
	Accrued income and sales taxes	2,917				16,465
	Accrued consulting	2,383				4,548
	Capital lease obligations	1,523				1,530
	Accrued other	4,747				5,582
		$	42,466			$	107,448
Schedule of other noncurrent liabilities	'
	Other Liabilities
		March 31,			December 31,
		2014			2013
		(in thousands)
	Other liabilities	33,720			26,341

Convertible_Senior_Notes_Table

Convertible Senior Notes (Tables)	3 Months Ended
	Mar. 31, 2014
Convertible Senior Notes Disclosure [Abstract]	'
Schedule of long-term debt instruments	'
	The Notes consist of the following (in thousands):
		March 31, 2014			December 31, 2013
	Liability component:
	Principal	$	300,000		$	300,000
	Less: debt discount, net of amortization	(53,638		)	(56,507		)
	Net carrying amount	$	246,362		$	243,493
	Equity component (1)	$	63,510		$	63,510
	(1) Recorded in the consolidated balance sheets within additional paid-in capital, net of the $1.7 million of issuance costs in equity.
Interest expense related to convertible senior notes	'
	The following table sets forth total interest expense recognized related to the Notes (in thousands):
		Three Months Ended March 31,
		2014			2013
	0.25% coupon	$	188		$	—
	Amortization of debt issuance costs	288			—
	Amortization of debt discount	2,870			—
		$	3,346		$	—

Stock_Option_Activity_Details

Stock Option Activity (Details) (Employee Stock Option, USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014
Employee Stock Option	'
Number of options outstanding [Roll forward]	'
Balances (in shares)	616
Granted (in shares)	0
Exercised (in shares)	-77
Forfeited, cancelled or expired (in shares)	-9
Balances (in shares)	530
Options vested and expected to vest (in shares)	522
Options vested (in shares)	411
Weighted Average Exercise Price [Abstract]	'
Balances (in dollars per share)	$23.10
Granted (in dollars per share)	$0
Exercised (in dollars per share)	$17.64
Forfeited, cancelled or expired (in dollars per share)	$31.88
Balances (in dollars per share)	$23.75
Options vested and expected to vest (in dollars per share)	$23.62
Options vested (in dollars per share)	$21.13
Weighted Average Contractual Term (Years) [Abstract]	'
Ending balance (in years)	'5 years 2 months 12 days
Options vested and expected to vest at end of period (in years)	'5 years 1 month 6 days
Options vested at end of period (in years)	'4 years 6 months 0 days
Aggregate Intrinsic Value [Abstract]	'
Ending balance	$10,620
Options vested and expected to vest at end of period	10,530
Options vested at end of period	9,243
Total intrinsic value of options exercised	2,500
Net cash proceeds from the exercise of stock options	$1,400

Restricted_Stock_Unit_Activity

Restricted Stock Unit Activity (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014
Weighted Average Grant Date Fair Value [Abstract]	'
Unrecognized compensation expense	$117,400
Weighted average period of unrecognized compensation expense (in years)	'2 years
Restricted Stock Units (RSUs)	'
Restricted Stock Units & Awards [Roll forward]	'
Awarded and unvested, beginning of period (in shares)	3,862
Granted (in shares)	975
Vested (in shares)	-897
Forfeited (in shares)	-183
Awarded and unvested, ending period (in shares)	3,757
Restricted stock units expected to vest, ending period (in shares)	3,316
Weighted Average Grant Date Fair Value [Abstract]	'
Awarded and unvested, beginning period (in dollars per share)	$38.59
Granted (in dollars per share)	$47.39
Vested (in dollars per share)	$35.69
Forfeited (in dollars per share)	$43.11
Awarded and unvested, ending period (in dollars per share)	$41.34
Restricted Stock Units (RSUs) | Minimum | Equity Incentive Plan 2006	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Vesting period of restricted stock	'3 years
Restricted Stock Units (RSUs) | Maximum | Equity Incentive Plan 2006	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Vesting period of restricted stock	'4 years
Performance Based Restricted Stock | Equity Incentive Plan 2006	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Vesting period of restricted stock	'4 years
Restricted Stock Units & Awards [Roll forward]	'
Granted (in shares)	341

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
Earnings Per Share [Abstract]	'	'
Net loss	($34,214)	($12,405)
Weighted-average common shares outstanding (in shares)	38,503	37,034
Net loss per share - basic and diluted (in dollars per share)	($0.89)	($0.33)

Investments_Details

Investments (Details) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Available-for-sale securities, less than one year	$24,115
Available-for-sale securities, between one and two years	31,295
Estimated fair value	55,410
Long-term Investments	'
Schedule of Available-for-sale Securities [Line Items]	'
Gross amortized cost	31,312
Gross unrealized gains	3
Gross unrealized losses	-20
Estimated fair value	31,295
Long-term Investments | Corporate Debt Securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Gross amortized cost	27,309
Gross unrealized gains	3
Gross unrealized losses	-17
Estimated fair value	27,295
Long-term Investments | Agency Securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Gross amortized cost	4,003
Gross unrealized gains	0
Gross unrealized losses	-3
Estimated fair value	4,000
Short-term Investments	'
Schedule of Available-for-sale Securities [Line Items]	'
Gross amortized cost	24,143
Gross unrealized gains	1
Gross unrealized losses	-29
Estimated fair value	24,115
Short-term Investments | Corporate Debt Securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Gross amortized cost	21,143
Gross unrealized gains	1
Gross unrealized losses	-26
Estimated fair value	21,118
Short-term Investments | Agency Securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Gross amortized cost	3,000
Gross unrealized gains	0
Gross unrealized losses	-3
Estimated fair value	$2,997

Fair_Value_Measurement_of_Cash

Fair Value Measurement of Cash Equivalents and Investments (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities [Line Items]	'	'
Cash equivalents and investments, fair value disclosure	$69,802	$0
Money Market Funds | Level 1 Inputs	'	'
Fair Value, Assets and Liabilities [Line Items]	'	'
Investments, fair value disclosure	14,392	0
Agency Securities | Level 2 Inputs	'	'
Fair Value, Assets and Liabilities [Line Items]	'	'
Investments, fair value disclosure	6,997	0
Corporate Debt Securities | Level 2 Inputs	'	'
Fair Value, Assets and Liabilities [Line Items]	'	'
Investments, fair value disclosure	$48,413	$0

Fair_Value_Measurement_of_Conv

Fair Value Measurement of Convertible Senior Notes (Details) (Estimate of Fair Value Measurement [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Estimate of Fair Value Measurement [Member]	'	'
Fair Value, Assets and Liabilities [Line Items]	'	'
Convertible senior notes, net	$244,977	$237,066

Balance_Sheet_Components_Prepa

Balance Sheet Components (Prepaid Expenses and Other Current Assets) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid expenses and other current assets [Abstract]	'	'
Intra-period deferred tax asset	$25,709	$0
Deferred costs	5,492	4,915
Prepaid service contracts - current portion	2,095	5,044
Other prepaid expenses and current assets	11,423	11,301
Total prepaid expenses and other current assets	$44,719	$21,260

Balance_Sheet_Components_Other

Balance Sheet Components (Other Assets, Non-Current) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Assets, Noncurrent [Abstract]	'	'
Other assets	$19,610	$15,412

Balance_Sheet_Components_Prope

Balance Sheet Components (Property and Equipment) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Property and Equipment [Abstract]	'	'	'
Property and equipment	$352,238	'	$322,894
Less: Accumulated depreciation and amortization	-180,838	'	-167,167
Net property and equipment	171,400	'	155,727
Depreciation and amortization expense	14,222	9,227	'
Capital leases, accumulated depreciation	1,100	'	'
Computer and Other Equipment	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	194,616	'	182,491
Capital lease obligations	6,800	'	'
Software	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	21,137	'	19,719
Leasehold Improvements	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	18,267	'	17,702
Buildings Under Build-To-Suit Leases	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	24,450	'	16,452
Rental Equipment	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	12,961	'	11,943
Furniture and Fixtures	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	9,008	'	8,391
Software And Website Development Costs	'	'	'
Property and Equipment [Abstract]	'	'	'
Property and equipment	$71,799	'	$66,196

Balance_Sheet_Components_Accru

Balance Sheet Components (Accrued Liabilities) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued Liabilities [Abstract]	'	'
Accrued compensation	$11,633	$14,872
Accrued marketing expenses	8,794	26,203
Accrued production costs	5,907	34,525
Accrued purchases	4,562	3,723
Accrued income and sales taxes	2,917	16,465
Accrued consulting	2,383	4,548
Capital lease obligations	1,523	1,530
Accrued other	4,747	5,582
Total accrued liabilities	$42,466	$107,448

Balance_Sheet_Components_Other1

Balance Sheet Components (Other Liabilities, Non-Current) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Liabilities, Noncurrent [Abstract]	'	'
Other liabilities	$33,720	$26,341

Convertible_Senior_Notes_Sched

Convertible Senior Notes Schedule of Convertible Senior Notes (Details) (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'		'
Net carrying amount	$246,362		$243,493
Convertible Senior Notes | Convertible Senior Notes 0.25% Due May 15, 2018	'		'
Debt Instrument [Line Items]	'		'
Principal	300,000		300,000
Less: debt discount, net of amortization	-53,638		-56,507
Net carrying amount	246,362		243,493
Equity component	$63,510	[1]	$63,510	[1]
[1]	Recorded in the consolidated balance sheets within additional paid-in capital, net of the $1.7 million of issuance costs in equity.

Convertible_Senior_Notes_Sched1

Convertible Senior Notes Schedule of Interest Expense Related to Convertible Senior Notes (Details) (Convertible Senior Notes, Convertible Senior Notes 0.25% Due May 15, 2018, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Convertible Senior Notes | Convertible Senior Notes 0.25% Due May 15, 2018	'	'
Debt Instrument [Line Items]	'	'
0.25% coupon	$188	$0
Amortization of debt issuance costs	288	0
Amortization of debt discount	2,870	0
Interest expense, convertible notes	$3,346	$0

Convertible_Senior_Notes_Addit

Convertible Senior Notes Additional Information (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Jun. 30, 2013	Dec. 31, 2013
Schedule of Convertible Senior Notes [Line Items]	'	'	'
Stock repurchased and retired during period, shares	665,035	631,180	70,313
Stock repurchased and retired during period, value	$34,600,000	$30,000,000	$2,200,000
Strike price of warrants	83.18	'	'
Proceeds from issuance of warrants	43,600,000	'	'
Designated as Hedging Instrument | Debt	'	'	'
Schedule of Convertible Senior Notes [Line Items]	'	'	'
Note hedge, aggregate amount	63,500,000	'	'
Convertible Senior Notes | Convertible Senior Notes 0.25% Due May 15, 2018	'	'	'
Schedule of Convertible Senior Notes [Line Items]	'	'	'
Contractual interest rate	0.25%	'	'
Maturity date	15-May-18	'	'
Conversion rate	15.5847	'	'
Denomination amount	1,000	'	'
Convertible senior notes, face amount	300,000,000	'	300,000,000
Conversion price	$64.17	'	'
Number of days out of thirty that common stock price exeeded conversion price	20	'	'
Number of consecutive trading days in period	30	'	'
Holders of notes conversion percentage of conversion price	130.00%	'	'
Notes trading price percentage	98.00%	'	'
Debt issuance cost	6,400,000	'	'
Deferred tax assets	600,000	'	'
Debt issuance costs attributable to the equity component	$1,700,000	'	'

Share_Repurchase_Program_Detai

Share Repurchase Program (Details) (USD $)	0 Months Ended		3 Months Ended		12 Months Ended
In Millions, except Share data, unless otherwise specified	Feb. 06, 2014	Oct. 29, 2012	Mar. 31, 2014	Jun. 30, 2013	Dec. 31, 2013
Equity, Class of Treasury Stock [Line Items]	'	'	'	'	'
Stock repurchased and retired during period, value	'	'	$34.60	$30	$2.20
Stock repurchased and retired during period, average amount per share	'	'	$52.04	'	$31.87
Stock repurchased and retired during period, shares	'	'	665,035	631,180	70,313
Stock repurchase program, authorized amount	$100	$60	'	'	'

Commitments_and_Contingencies_

Commitments and Contingencies Build-to-Suit Leases (Details) (Buildings Under Build-To-Suit Leases, USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
	sqft
Commitments and Contingencies [Line Items]	'	'
Useful Life (in years)	'30 years	'
Shakopee	'	'
Commitments and Contingencies [Line Items]	'	'
Lease square footage	217,000	'
Increase in property, plant and equipment, additions	$8	$7
Tempe	'	'
Commitments and Contingencies [Line Items]	'	'
Lease square footage	217,000	'

Commitments_and_Contingencies_1

Commitments and Contingencies Syndicated Credit Facility (Details) (USD $)	Mar. 31, 2014	Nov. 22, 2011	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
In Millions, unless otherwise specified			Revolving Credit Facility	Base Rate Loan	Base Rate Loan	Adjusted LIBO Loan	Adjusted LIBO Loan
			Line of Credit	Line of Credit	Line of Credit	Line of Credit	Line of Credit
			Adjusted LIBO Rate	Eurodollar Rate	Eurodollar Rate	Eurodollar Rate	Eurodollar Rate
				Minimum	Maximum	Minimum	Maximum
Line of Credit Facility [Abstract]	'	'	'	'	'	'	'
Credit Agreement Term	'	'5 years	'	'	'	'	'
Senior secured revolving credit facility	$125	'	'	'	'	'	'
Increase in credit facility, maximum	75	'	'	'	'	'	'
Revised senior secured revolving credit facility	$200	'	'	'	'	'	'
Debt Instrument, Basis Spread on Variable Rate	'	'	1.00%	0.05%	1.25%	1.50%	2.25%
Maximum ratio of consolidated total indebtedness to EBITDA allowed to prevent default	3.5	'	'	'	'	'	'
Maximum ratio of consolidated senior secured indebtedness to EBITDA allowed to prevent default	1.6	'	'	'	'	'	'
Minimum ratio of consolidated senior secured consolidated indebtedness to EBITDA allowed to prevent default	2.5	'	'	'	'	'	'