Shutterfly (SFLY) 10-K 18 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 11, 2015	Jun. 30, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	SHUTTERFLY INC
Entity Central Index Key	1125920
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$1,653,803,439
Entity Common Stock, Shares Outstanding		37,749,639
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14

CONSOLIDATED_BALANCE_SHEET

CONSOLIDATED BALANCE SHEET (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$380,543	$499,084
Short-term investments	64,866	0
Accounts receivable, net	31,105	21,641
Inventories	13,016	9,629
Deferred tax asset, current portion	34,645	26,942
Prepaid expenses and other current assets	24,983	21,260
Total current assets	549,158	578,556
Long-term investments	29,928	0
Property and equipment, net	241,742	155,727
Intangible assets, net	87,950	118,621
Goodwill	408,975	397,306
Deferred tax asset, net of current portion	549	520
Other assets	13,976	15,412
Total assets	1,332,278	1,266,142
Current liabilities:
Accounts payable	30,086	33,656
Accrued liabilities	135,485	107,448
Deferred revenue	31,415	24,114
Total current liabilities	196,986	165,218
Convertible senior notes, net	255,218	243,493
Deferred tax liability	48,090	42,995
Other liabilities	74,178	26,341
Total liabilities	574,472	478,047
Commitments and contingencies (Note 7)
Stockholders’ equity:
Common stock, $0.0001 par value; 100,000 shares authorized; 37,906 and 38,196 shares issued and outstanding on December 31, 2014 and December 31, 2013, respectively	4	4
Additional paid-in capital	838,313	771,875
Accumulated other comprehensive loss	-53	0
Accumulated earnings/(deficit)	-80,458	16,216
Total stockholders' equity	757,806	788,095
Total liabilities and stockholders' equity	$1,332,278	$1,266,142

CONSOLIDATED_BALANCE_SHEET_Par

CONSOLIDATED BALANCE SHEET (Parenthetical) (USD $)	Dec. 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)	37,906,000	38,196,000
Common stock, shares outstanding (in shares)	37,906,000	38,196,000

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net revenues	$921,580	$783,642	$640,624
Cost of net revenues	452,720	369,593	294,857
Gross profit	468,860	414,049	345,767
Operating expenses:
Technology and development	133,623	108,995	85,746
Sales and marketing	216,035	189,985	148,806
General and administrative	112,957	93,011	70,502
Total operating expenses	462,615	391,991	305,054
Income from operations	6,245	22,058	40,713
Interest expense	-16,732	-9,446	-597
Interest and other income, net	508	308	42
Income/(loss) before income taxes	-9,979	12,920	40,158
Benefit from/(provision for) income taxes	2,119	-3,635	-17,160
Net income/(loss)	($7,860)	$9,285	$22,998
Net income/(loss) per share:
Basic (in dollars per share)	($0.20)	$0.25	$0.64
Diluted (in dollars per share)	($0.20)	$0.24	$0.61
Weighted average shares:
Basic	38,452	37,680	35,826
Diluted	38,452	39,493	37,432

CONSOLIDATED_STATEMENTS_OF_OPE1

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cost of revenues [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$3,657	$2,485	$1,696
Technology and development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	9,236	9,477	8,635
Sales and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	22,670	19,774	11,559
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$26,199	$21,792	$15,432

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income/(loss)	($7,860)	$9,285	$22,998
Unrealized losses on investments, net	-87	0	0
Tax benefit on unrealized losses on investments, net	34	0	0
Other comprehensive loss, net of tax	-53	0	0
Comprehensive income/(loss)	($7,913)	$9,285	$22,998

CONSOLIDATED_STATEMENTS_OF_STO

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Earnings
In Thousands, except Share data, unless otherwise specified
Balance, beginning of year at Dec. 31, 2011		$4	$589,067	$0	$19,926
Balance at Dec. 31, 2011		34,839,000
Common stock (par value)
Issuance of common stock in connection with acquisition and upon exercise of options and vesting of restricted stock units		1
Common stock repurchased and retired		-1			-3,752
Additional paid-in capital
Issuance of common stock upon exercise of options and vesting of restricted stock units			10,210
Stock based compensation, net of forfeitures			38,214
Tax benefit/(shortfall) of stock options			14,619
Equity component of the convertible note issuance, net			0
Purchase of convertible note hedge			0
Sale of warrants			0
Accumulated other comprehensive income (loss), net of tax
Unrealized loss on investments, net of tax				0
Accumulated earnings (deficit)
Common stock repurchased and retired		-1			-3,752
Net income/(loss)	22,998				22,998
Total stockholders' equity	691,286
Common stock
Issuance of common stock upon exercise of options and vesting of restricted stock units		1,656,000
Common stock repurchased and retired		-137,000
Balance, end of year at Dec. 31, 2012		4	652,110	0	39,172
Balance, end of year at Dec. 31, 2012		36,358,000
Common stock (par value)
Issuance of common stock in connection with acquisition and upon exercise of options and vesting of restricted stock units		1
Common stock repurchased and retired		-1			-32,241
Additional paid-in capital
Issuance of common stock upon exercise of options and vesting of restricted stock units			19,112
Stock based compensation, net of forfeitures			55,237
Tax benefit/(shortfall) of stock options			2,957
Equity component of the convertible note issuance, net			62,409
Purchase of convertible note hedge			-63,510
Sale of warrants			43,560
Accumulated other comprehensive income (loss), net of tax
Unrealized loss on investments, net of tax				0
Accumulated earnings (deficit)
Common stock repurchased and retired		-1			-32,241
Net income/(loss)	9,285				9,285
Total stockholders' equity	788,095
Common stock
Issuance of common stock upon exercise of options and vesting of restricted stock units		2,540,000
Common stock repurchased and retired	-70,313	-702,000
Balance, end of year at Dec. 31, 2013	0
Balance, end of year at Dec. 31, 2013		4	771,875	0	16,216
Balance, end of year at Dec. 31, 2013	38,196,000	38,196,000
Common stock (par value)
Issuance of common stock in connection with acquisition and upon exercise of options and vesting of restricted stock units		1
Common stock repurchased and retired		-1			-88,814
Additional paid-in capital
Issuance of common stock upon exercise of options and vesting of restricted stock units			3,243
Stock based compensation, net of forfeitures			63,358
Tax benefit/(shortfall) of stock options			-163
Equity component of the convertible note issuance, net			0
Purchase of convertible note hedge			0
Sale of warrants			0
Accumulated other comprehensive income (loss), net of tax
Unrealized loss on investments, net of tax				-53
Accumulated earnings (deficit)
Common stock repurchased and retired		-1			-88,814
Net income/(loss)	-7,860				-7,860
Total stockholders' equity	757,806
Common stock
Issuance of common stock upon exercise of options and vesting of restricted stock units		1,671,000
Common stock repurchased and retired	-1,961,000	-1,961,000
Balance, end of year at Dec. 31, 2014	-53
Balance, end of year at Dec. 31, 2014		$4	$838,313	($53)	($80,458)
Balance, end of year at Dec. 31, 2014	37,906,000	37,906,000

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income/(loss)	($7,860)	$9,285	$22,998
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Depreciation and amortization	64,885	43,887	29,424
Amortization of intangible assets	33,867	30,969	20,685
Amortization of debt discount and transaction costs	12,905	7,707	0
Stock-based compensation, net of forfeitures	61,762	53,528	37,322
(Gain)/loss on disposal of property and equipment and rental assets	361	13	-861
Deferred income taxes	-2,604	331	54
Tax benefit/(shortfall) from stock-based compensation	-163	2,957	14,619
Excess tax benefits from stock-based compensation	-1,025	-3,635	-16,622
Changes in operating assets and liabilities:
Accounts receivable, net	-9,464	-7,174	-577
Inventories	-3,388	-3,681	-1,306
Prepaid expenses and other current assets	-3,958	-4,347	-1,399
Other assets	-1,442	-7,669	212
Accounts payable	-1,275	3,583	15,230
Accrued and other liabilities	18,273	16,089	26,610
Deferred revenue	7,301	5,258	5,739
Other non-current liabilities	-1,687	167	-747
Net cash provided by operating activities	166,488	147,268	151,381
Cash flows from investing activities:
Acquisition of business and intangible assets, net of cash acquired	-12,000	-76,893	-57,212
Purchases of property and equipment	-71,169	-62,582	-40,535
Capitalization of software and website development costs	-21,032	-15,760	-12,528
Purchases of investments	124,111	0	0
Maturities and sales of investments	29,980	0	0
Proceeds from sale of property and equipment and rental assets	904	388	986
Net cash used in investing activities	-197,428	-154,847	-109,289
Cash flows from financing activities:
Proceeds from borrowings of convertible senior notes, net of issuance costs	0	291,897	0
Proceeds from issuance of warrants	0	43,560	0
Purchase of convertible note hedge	0	-63,510	0
Proceeds from issuance of common stock upon exercise of stock options	3,243	19,112	10,211
Repurchases of common stock	-88,815	-32,241	-3,752
Excess tax benefits from stock-based compensation	1,025	3,635	16,622
Principal payments of capital lease and financing obligations	-3,054	-878	0
Net cash provided by/(used in) financing activities	-87,601	261,575	23,081
Net increase/(decrease) in cash and cash equivalents	-118,541	253,996	65,173
Cash and cash equivalents, beginning of period	499,084	245,088	179,915
Cash and cash equivalents, end of period	380,543	499,084	245,088
Cash paid during the period for:
Interest	1,133	466	0
Income taxes	667	2,158	618
Supplemental schedule of non-cash investing / financing activities:
Net increase/(decrease) in accrued purchases of property and equipment	-2,674	-3,372	7,694
Net increase in accrued capitalized software and website development costs	716	0	0
Stock-based compensation capitalized with software and website development costs	1,597	1,709	892
Increase in estimated fair market value of buildings under build-to-suit leases	22,855	10,080	6,372
Property and equipment acquired under capital leases	37,823	0	0
Amount due for acquisition of business	1,673	0	963
Amount due from adjustment of net working capital from acquired business	$253	$10	$0

Description_of_Business

Description of Business	12 Months Ended
	Dec. 31, 2014
Description of Business [Abstract]
Description of Business	Description of Business
	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. And the Company 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.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
The Company and Summary of Significant Accounting Policies	The Company and Summary of Significant Accounting Policies
	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. The functional currency of its Israeli subsidiary is the U.S. Dollar, as such, exchange rate fluctuations are recorded as a part of earnings. All intercompany transactions and balances have been eliminated.
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Items subject to such estimates and assumptions include, among others, intangible assets valuation, useful lives, excess and obsolete inventories, restructuring, legal contingencies, valuation allowances, restricted stock awards with market criteria, provision for sales returns, and allowance for doubtful accounts. Actual results could differ from these estimates.
	Cash and Cash Equivalents
	The Company considers all highly liquid investments purchased with original maturities of three months or less to be cash equivalents. Management determines the appropriate classification of cash equivalents at the time of purchase and reevaluates such designations at each balance sheet date. Cash equivalents consist of money market funds, primarily invested in U.S. Treasury securities.
	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, corporate debt securities, and U.S. government 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 year ended December 31, 2014.
	Concentration of Credit Risk
	Financial instruments that potentially subject the Company to credit risk consist principally of cash, cash equivalents, investments, and accounts receivable. As of December 31, 2014, the Company's cash and cash equivalents were maintained by financial institutions in the United States and its deposits may be in excess of insured limits. The Company believes that the financial institutions that hold its investments are financially sound and, accordingly, minimal credit risk exists with respect to these investments.
	The Company’s accounts receivable are derived primarily from sales to customers located in the United States who make payments through credit cards, sales of the Company's products in retail stores, sales of enterprise services, and revenue generated from online advertisements posted on the Company's websites. Credit card receivables settle relatively quickly and the Company's historical experience of credit card losses have not been material and have been within management’s expectations. Excluding amounts due from credit cards of customers, as of December 31, 2014, two Enterprise customers accounted for 25% and 18% of the Company’s net accounts receivable, respectively. No other customers accounted for more than 10% of net accounts receivable as of December 31, 2014. As of December 31, 2013, excluding amounts due from credit cards of customers, one Enterprise customer accounted for 28% of the Company’s net accounts receivable. No other customers accounted for more than 10% of net accounts receivable as of December 31, 2013.
	Inventories
	Inventories are stated at the lower of cost on a first-in, first-out basis or net realizable value. The value of inventories is reduced by estimates for excess and obsolete inventories. The estimate for excess and obsolete inventories is based upon management’s review of utilization of inventories in light of projected sales, current market conditions and market trends. Inventories are primarily raw materials and consist principally of paper, photo book covers and packaging supplies.
	Deferred Costs
	Deferred costs are the incremental costs directly associated with flash deal promotions through group buying websites.  These costs are paid and deferred at the time of the flash deal, and recognized when the redeemed products are shipped.  Amortization of deferred costs is included in sales and marketing expense in the accompanying consolidated statements of operations.
	Property and Equipment
	Property and equipment are stated at historical cost, less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated lives of the assets, generally three to five years, and are allocated between cost of net revenues and operating expenses. Rental assets are depreciated over their estimated useful lives, generally five to six years as component of cost of net revenues, to an estimated net realizable value. Leasehold improvements are amortized over their estimated useful lives, or the lease term if shorter, generally three to ten years. Upon retirement or sale, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is reflected in operating expenses, except for rental assets, which are recognized in cost of net revenues. Major additions and improvements are capitalized, while replacements, maintenance and repairs that do not extend the life of the asset are charged to expense as incurred.
	Software and Website Development Costs
	The Company capitalizes eligible costs associated with website development and software developed or obtained for internal use. Accordingly, the Company expenses all costs that relate to the planning and post implementation phases. Payroll and payroll related costs and stock-based compensation incurred in the development phase are capitalized and amortized over the product’s estimated useful life, generally three years. Costs associated with minor enhancements and maintenance for the Company’s websites are expensed as incurred.
	Long-Lived Assets
	The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability is measured by comparison of the carrying amount to the future net cash flows which the assets are expected to generate. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the projected discounted future cash flows arising from the asset using a discount rate determined by management to be commensurate with the risk inherent to the Company’s current business model.
	Goodwill and Intangible Assets
	Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. Intangible assets resulting from the acquisition of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of assets received. Intangible assets are amortized on a straight-line basis over the estimated useful lives which range from one to sixteen years, and the amortization is allocated between cost of net revenues and operating expenses. Goodwill and intangible assets with indefinite lives are not subject to amortization, but are tested for impairment on an annual basis during the fourth quarter or whenever events or changes in circumstances indicate the carrying amount of these assets may not be recoverable.
	For the Company’s annual goodwill impairment analysis, the Company operates under two reporting units. The Company tests goodwill for impairment by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value or qualitative factors indicate that it is more likely than not that goodwill is impaired, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. The Company estimates the fair value of the reporting units using a combination of the income approach (discounted cash flows) and the market approach. Forecasts of future cash flows are based on our best estimate of future net sales and operating expenses, based primarily on expected reporting unit expansion, pricing, market segment share, and general economic conditions.
	Intellectual Property Prepaid Royalties
	The Company has patent license agreements with various third parties. The Company has accounted for these agreements as prepaid royalties that are amortized over the remaining life of the patents. Amortization expense is recorded on a straight-line basis as a component of cost of revenue. The current portion of the prepaid royalty is recorded as a component of prepaid expenses and the long term portion is recorded in other assets.
	Lease Obligations
	The Company categorizes leases at their inception as either operating or capital leases. On certain of our lease agreements, the Company may receive rent holidays and other incentives. The Company recognizes lease costs on a straight-line basis without regard to deferred payment terms, such as rent holidays that defer the commencement date of required payments. Additionally, incentives the Company receives for leases categorized as operating leases are treated as a reduction of our costs over the term of the agreement.
	The Company establishes assets and liabilities for the estimated construction costs incurred under build-to-suit lease arrangements to the extent the Company is involved in the construction of structural improvements or takes construction risk prior to commencement of a lease. Upon occupancy of facilities under build-to-suit leases, the Company assesses whether these arrangements qualify for sales recognition under the sale-leaseback accounting guidance. If the Company continues to be the deemed owner, the facilities are accounted for as financing leases.
	Revenue Recognition
	The Company recognizes revenue from Consumer and Enterprise product sales, net of applicable sales tax, upon shipment of fulfilled orders, when persuasive evidence of an arrangement exists, the selling price is fixed or determinable and collection of resulting receivables is reasonably assured. Customers place Consumer product orders through the Company's websites and pay primarily using credit cards. Enterprise customers are invoiced upon fulfillment. Shipping charged to customers is recognized as revenue at the time of shipment.
	For camera, lenses, and video equipment rentals from our BorrowLenses brand, we recognize rental revenue and the related shipping and insurance revenue, ratably over the rental period. Revenue from the sale of rental equipment is recognized upon shipment of the equipment.
	For gift card sales and flash deal promotions through group buying websites, the Company recognizes revenue on a gross basis, as it is the primary obligor, when redeemed items are shipped. Revenues from sales of prepaid orders on its websites are deferred until shipment of fulfilled orders or until the prepaid period expires. The Company’s share of revenue generated from its print to retail relationships, is recognized when orders are picked up by its customers at the respective retailer.
	The Company provides its customers with a 100% satisfaction guarantee whereby products can be returned within a 30-day period for a reprint or refund. The Company maintains an allowance for estimated future returns based on historical data. The provision for estimated returns is included in accrued expenses.
	The Company periodically provides incentive offers to its customers in exchange for setting up an account and to encourage purchases. Such offers include free products and percentage discounts on current purchases. Discounts, when accepted by customers, are treated as a reduction to the purchase price of the related transaction and are presented in net revenues. Production costs related to free products are included in cost of revenues upon redemption.
	The Company’s advertising revenues are derived from the sale of online advertisements on its websites. Advertising revenues are recognized as “impressions” (i.e., the number of times that an advertisement appears in pages viewed by users of the Company's websites) are delivered; as “clicks” (which are generated each time users of the Company's websites click through the advertisements to an advertiser’s designated website) are provided to advertisers; or ratably over the term of the agreement with the expectation that the advertisement will be delivered ratably over the contract period.
	Restructuring Costs
	The Company records restructuring costs when expenses are incurred. The Company accrues for lease termination costs when the restructuring event takes place. The Company accrues for severance once the total severance pool has been calculated, approved and communicated, and recognizes the expense ratably over the required service period, from the communication date to the exit date. The Company also accelerates depreciation using a revised economic life of the leasehold improvement assets.
	Advertising Costs
	Advertising costs are expensed as incurred, except for direct mail advertising which is expensed when the advertising first takes place. The Company did not have any capitalized direct mail costs at December 31, 2014 and December 31, 2013. Total advertising costs are a component of sales and marketing expenses and include print advertising, Internet advertising, such as display ads and keyword search terms and TV and radio advertising. These amounts totaled approximately $102.2 million, $87.5 million and $69.9 million during the years ended December 31, 2014, 2013 and 2012, respectively.
	Stock-Based Compensation
	The Company measures stock based awards at fair value and recognizes compensation expense for all share-based payment awards made to its employees and directors, including employee stock options and restricted stock awards.
	The Company estimates the fair value of stock options granted using the Black-Scholes valuation model. This model requires the Company to make estimates and assumptions including, among other things, estimates regarding the length of time an employee will retain vested stock options before exercising them, the estimated volatility of the Company's common stock price and the number of options that will be forfeited prior to vesting. The fair value is then amortized on a straight-line basis over the requisite service periods of the awards, which is generally the vesting period. Changes in these estimates and assumptions can materially affect the determination of the fair value of stock-based compensation and consequently, the related amount recognized in the Company's consolidated statements of operations.
	The cost of restricted stock awards and performance based restricted stock awards is determined using the fair value of the Company’s common stock on the date of grant. Compensation expense is recognized for restricted stock awards on a straight-line basis over the vesting period. Compensation expense associated with performance based restricted stock awards 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. The cost of restricted stock awards with market conditions is estimated using a Monte Carlo valuation model.
	Employee stock-based compensation expense is 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.
	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.
	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 operations.
	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 December 31, 2014 and 2013.
	The Company is subject to taxation in the United States and Israel.
	Net Income/(Loss) Per Share
	Basic net income/(loss) per share attributed to common shares is computed by dividing the net income/(loss) attributable to common shares for the period by the weighted average number of common shares outstanding during the period.
	Diluted net income/(loss) per share attributed to common shares is computed by dividing the net income 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, conversion of warrants, and the impact of convertible debt.
		Year ended December 31,
		2014				2013			2012
	Net income/(loss) per share:	(in thousands, except per share amounts)
	Numerator
Net income/(loss)	$	(7,860	)		$	9,285		$	22,998
Denominator
Denominator for basic net income/(loss) per share
Weighted-average common shares outstanding	38,452				37,680			35,826
Dilutive effect of stock options and restricted awards	—				1,813			1,606
Denominator for diluted net income per share	38,452				39,493			37,432
Net income/(loss) per share
Basic	$	(0.20	)		$	0.25		$	0.64
Diluted	$	(0.20	)		$	0.24		$	0.61
The following weighted-average outstanding stock options and restricted stock units were excluded from the computation of diluted net income/(loss) per common share for the periods presented because including them would have had an anti-dilutive effect (in thousands):
	Year ended December 31,
	2014			2013			2012
Stock options and restricted stock units	4,205			24			748
Comprehensive Income
Comprehensive income is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. Comprehensive income is composed of net income/(loss) and other comprehensive income/(loss). The Company's other comprehensive income/(loss) consists of unrealized gains and losses on marketable securities classified as available-for-sale.
Segment Reporting
The Company reports as two operating segments with the Chief Executive Officer (“CEO”) acting as the Company’s chief operating decision maker. The Company defined two reportable segments based on factors such as how management manages the operations and how its chief operating decision maker views results.
Recent Accounting Pronouncements
In May 2014, the FASB issued new accounting guidance related to revenue recognition. This new standard will replace all current U.S. GAAP guidance on this topic and eliminate all industry-specific guidance. The new revenue recognition standard provides a unified model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. This guidance will be effective for the Company beginning January 1, 2017 and can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. The Company is evaluating the impact of adopting this new accounting standard on its financial statements.
In August 2014, the FASB issued new guidance related to the disclosures around going concern. The new standard provides guidance around management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's financial statements.

Balance_Sheet_Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Balance Sheet Components	Balance Sheet Components
	Intellectual Property Prepaid Royalties
	Total amortization for these license agreements in 2014 and 2013 were $1.6 million and $1.5 million, respectively. As of December 31, 2014, the Company had a balance of $8.3 million in unamortized prepaid royalties. Amortization of these licenses is estimated as follows (in thousands):
	Year Ending:
	2015	$	1,262
	2016	854
	2017	799
	2018	799
	2019	676
	Thereafter	3,861
		$	8,251
	Prepaid Expenses and Other Current Assets
		December 31,
		2014				2013
		(in thousands)
	Deferred costs	$	6,911			$	4,915
	Prepaid service contracts – current portion	6,754				5,044
	Other prepaid expenses and current assets	11,318				11,301
		$	24,983			$	21,260
	Other Assets
		December 31,
		2014				2013
		(in thousands)
	Other assets	$	13,976			$	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
		December 31,
		2014				2013
		(in thousands)
	Computer equipment and software	$	159,370			$	140,868
	Manufacturing equipment	119,495				61,342
	Capitalized software and website development costs	89,311				66,196
	Buildings under build-to-suit leases	39,307				16,452
	Leasehold improvements	20,876				17,702
	Rental equipment	14,591				11,943
	Furniture and fixtures	10,683				8,391
		453,633				322,894
	Less: Accumulated depreciation and amortization	(211,891		)		(167,167		)
	Net property and equipment	$	241,742			$	155,727
	Building value of $39.3 million 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 7 - Commitments and Contingencies."
	Included within Manufacturing equipment is approximately $44.2 million and $6.8 million of capital lease obligations for various pieces of manufacturing facility equipment in 2014 and 2013, respectively. Accumulated depreciation of assets under capital lease totaled $3.1 million at December 31, 2014 compared to $0.8 million at December 31, 2013.
	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 $64.9 million, $43.9 million, and $29.4 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	Total capitalized software and website development costs, net of accumulated amortization totaled $35.7 million and $27.8 million at December 31, 2014 and 2013, respectively. Amortization of capitalized costs totaled approximately $14.9 million, $10.8 million and $8.4 million for the years ended December 31, 2014, 2013 and 2012, respectively.
	Intangible Assets
	Intangible assets are comprised of the following:
			Weighted Average		December 31,
			Useful Life		2014				2013
					(in thousands)
	Purchased technology		10 years		$	104,738			$	104,553
	Less: accumulated amortization				(51,794		)		(35,653		)
					52,944				68,900
	Customer relationships		5 years		75,146				74,576
	Less: accumulated amortization				(42,086		)		(27,452		)
					33,060				47,124
	Licenses and other		3 years		7,202				6,692
	Less: accumulated amortization				(5,256		)		(4,095		)
					1,946				2,597
	Total				$	87,950			$	118,621
	Purchased technology is amortized over a period ranging from one to sixteen years. Customer relationships are amortized over a period ranging from one to seven years. Licenses and other is amortized over a period ranging from two to five years.
	Intangible asset amortization expense for the years ended December 31, 2014, 2013 and 2012 was $32.3 million, $29.5 million and $19.7 million, respectively. Amortization of existing intangible assets is estimated to be as follows (in thousands):
	Year Ending:
	2015		$	25,719
	2016		18,888
2017		13,699
2018		4,802
2019		3,408
Thereafter		21,434
		$	87,950
Goodwill
In the fourth quarter of 2014, the Company reassessed its reportable segments. As part of this review, the Company determined that it had two reporting units; and that those two reporting units are also reportable segments. Refer to Note 13 - Segment Reporting of the financial statements for discussion of these two segments. In conjunction with the change to two reporting units, the Company allocated goodwill to each reporting unit based on their relative fair values. The Company performed step one of the annual goodwill impairment test for the years ended December 31, 2014 and 2013. The enterprise value exceeded the carrying value for both periods and accordingly, no impairment was recorded.
The following table presents goodwill balances and adjustments to those balances for each of our reportable segments (in thousands):
	Consumer				Enterprise				Consolidated			Total
Balance, December 31, 2012	$	—			$	—			$	358,349		$	358,349
Acquisition of business	—				—				38,957			38,957
Goodwill adjustments	—				—				—			—
Balance, December 31, 2013	—				—				397,306			397,306
Acquisition of business	—				—				12,033			12,033
Goodwill adjustments	—				—				(364		)	(364		)
Goodwill allocation	372,072				36,903				(408,975		)	—
Balance, December 31, 2014	$	372,072			$	36,903			$	—		$	408,975
For the year ended December 31, 2014, adjustments to goodwill reflected final adjustments to net working capital acquired under provisions of certain business combination purchase agreements.
Accrued Liabilities
	December 31,
	2014				2013
	(in thousands)
Accrued production costs	$	32,814			$	34,525
Accrued marketing expenses	30,835				26,203
Accrued income and sales tax	18,149				16,465
Accrued compensation	16,337				14,872
Accrued purchases	11,809				3,723
Capital lease obligations	8,905				1,530
Accrued consulting	6,418				4,548
Accrued other	10,218				5,582
	$	135,485			$	107,448
Other Liabilities
	December 31,
	2014				2013
	(in thousands)
Financing obligations	$	38,529			$	16,354
Capital lease obligations	32,297				4,530
Other liabilities	3,352				5,457
	$	74,178			$	26,341
Financing obligations relate to the Company's build-to-suit leases as further discussed in Note 7 - Commitments and Contingencies.

Investments

Investments	12 Months Ended
	Dec. 31, 2014
Investments [Abstract]
Investments [Text Block]	Investments
	At December 31, 2014, the estimated fair value of short-term and long-term investments classified as available for sale are as follows (in thousands):
			December 31, 2014
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	Short-term investments
	Corporate debt securities		$	64,922	$	3	$	(59	)	$	64,866
	Agency securities		—		—		—			—
	Total short-term investments		$	64,922	$	3	$	(59	)	$	64,866
	Long-term investments
	Corporate debt securities		$	14,511	$	1	$	(30	)	$	14,482
	Agency securities		13,649		3		(7		)	13,645
	US Government securities		1,799		2		—			1,801
	Total long-term investments		$	29,959	$	6	$	(37	)	$	29,928
	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 December 31, 2014 and no impairments were recorded in the period. The Company had no material realized gains or losses during the year ended December 31, 2014.
	The following table summarizes the contractual maturities of the Company's investments as of December 31, 2014 (in thousands):
		31-Dec-14
	One year or less	$	64,866
	One year through three years	29,928
		$	94,794
	Actual maturities may differ from the contractual maturities because borrowers may have certain prepayment conditions.

Fair_Value_Disclosure

Fair Value Disclosure	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair value disclosures	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 December 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
		December 31, 2014		December 31, 2013
	Level 1 Securities:
	Money market funds	$	34,480	$	—
	Level 2 Securities:
	Agency securities	13,645		—
	Corporate debt securities	79,348		—
	US Government securities	1,801		—
	Total cash equivalents and investments	$	129,274	$	—
	Convertible Senior Notes
	As of December 31, 2014, the fair value of the convertible senior 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
		December 31, 2014		December 31, 2013
	Convertible senior notes	$	251,973	$	237,066

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisitions	Acquisitions
	Business Combinations
	Dot Copy, Inc. ("Groovebook")
	On October 31, 2014, the Company acquired certain assets of Dot Copy, Inc. ("Groovebook") for a total aggregate purchase price of $13.7 million, consisting of an upfront cash purchase amount and a future performance-based earn-out subject to achieving certain financial metrics. Groovebook is a mobile photo book app subscription service that sends customers a keepsake book of their mobile photos each month. The acquisition was accounted for as a purchase transaction and, accordingly, the purchase price has been allocated to the acquired tangible assets, liabilities assumed, and identifiable intangible assets acquired based on their estimated fair values on the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill.
	Of the total purchase price, $0.6 million was allocated to the customer base, which will be amortized over an estimated useful life of two years, $0.5 million was allocated to the Groovebook tradename, which will be amortized over an estimated useful life of three years, $0.4 million was allocated to Groovebook patents, which will be amortized over an estimated useful life of two years and $0.2 million was allocated to developed technologies, which will be amortized over an estimated useful life of one year. The remaining excess purchase price of approximately $12.0 million was allocated to goodwill primarily representing manufacturing and production synergies and synergies from Groovebooks' market position. The results of operations for the acquired business have been included in the consolidated statement of operations for the period subsequent to the Company's acquisition of Groovebook. Groovebook's results of operations for periods prior to this acquisition were not material to the consolidated statement of operations and, accordingly, pro forma financial information has not been presented.
	BorrowLenses LLC
	On October 24, 2013, the Company acquired BorrowLenses LLC ("BorrowLenses") for a total aggregate cash purchase price of $36.8 million, or $35.7 million net of cash acquired. BorrowLenses is a premier online marketplace for photographic and video equipment rentals. The acquisition was accounted for as a non-taxable purchase transaction and, accordingly, the purchase price has been allocated to the acquired tangible assets, liabilities assumed, and identifiable intangible assets acquired based on their estimated fair values on the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill. For federal income tax purposes, an election was made to treat the non-taxable transaction as an asset acquisition.
	Of the total purchase price, $4.2 million was allocated to the customer base, which will be amortized over an estimated useful life of four years, $1.0 million was allocated to developed technologies, which will be amortized over an estimated useful life of approximately three years, and $1.6 million was allocated to the BorrowLenses tradename, which will be amortized over an estimated useful life of four years. The assets and liabilities acquired totaled approximately $13.3 million and $0.8 million, respectively. The remaining excess purchase price of approximately $17.6 million was allocated to goodwill primarily representing the assembled workforce and synergies from BorrowLenses' market position. The results of operations for the acquired business have been included in the consolidated statement of operations for the period subsequent to the Company's acquisition of BorrowLenses. BorrowLenses' results of operations for periods prior to this acquisition were not material to the consolidated statement of operations and, accordingly, pro forma financial information has not been presented.
	R&R Images, Inc.
	On August 29, 2013, the Company acquired certain assets of R&R Images, Inc. ("R&R") primarily to expand product innovation and printing capabilities. The acquisition was accounted for as a business combination. This acquisition was not significant individually or when aggregated with other acquisitions during the year ended December 31, 2013. The Company has included financial results of R&R in the consolidated financial statements from the acquisition date of August 29, 2013 through December 31, 2013.
	MyPublisher, Inc.
	On April 29, 2013, the Company acquired MyPublisher, Inc. ("MyPublisher") for a total aggregate cash purchase price of $40.2 million, or $38.4 million net of cash acquired. MyPublisher is one of the pioneers in the photo book industry and creator of easy-to-use photo book making software. The acquisition was accounted for as a non-taxable purchase transaction and, accordingly, the purchase price has been allocated to the acquired tangible assets, liabilities assumed, and identifiable intangible assets acquired based on their estimated fair values on the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill.
	Of the total purchase price, $9.5 million was allocated to the customer base, which will be amortized over an estimated useful life of four years, $7.8 million was allocated to developed technologies and will be amortized over an estimated useful life of approximately two years, $1.3 million to the MyPublisher tradename, which will be amortized over an estimated useful life of two years, and $0.1 million to favorable leases which will be amortized over an estimated useful life of five years. The tangible assets and liabilities acquired totaled approximately $8.2 million and $7.8 million, respectively. Included within assets and liabilities is a net deferred tax liability of approximately $0.3 million representing the difference between the assigned values of the assets acquired and the tax basis of those assets, with the offset recorded as additional goodwill. The remaining excess purchase price of approximately $21.1 million was allocated to goodwill primarily representing the assembled workforce and synergies from MyPublisher's market position. The results of operations for the acquired business have been included in the consolidated statement of operations for the period subsequent to the Company's acquisition of MyPublisher. MyPublisher's results of operations for periods prior to this acquisition were not material to the consolidated statement of operations and, accordingly, pro forma financial information has not been presented.
	ThisLife.com, Inc.
	On December 28, 2012, the Company acquired ThisLife.com, Inc. (“ThisLife”) for a total aggregate cash purchase price of $22.5 million. ThisLife provides cloud-based services for protecting, organizing, storing and sharing photos and videos which will strengthen the Company's photo storage and sharing capabilities as well as enable the creation of products across the web and mobile efficiently. The acquisition was accounted for as a non-taxable purchase transaction and, accordingly, the purchase price has been allocated to the acquired tangible assets, liabilities assumed, and identifiable intangible assets acquired based on their estimated fair values on the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill. In addition, restricted stock awards were granted to certain ThisLife employees contingent upon their continued employment for a period of three years and will be recorded as stock-based compensation over the vesting period. Also, performance-based restricted stock units ("PBRSU") were granted to certain ThisLife employees contingent on achieving certain performance milestones and continued employment for a period of three years. These awards will be recorded as stock-based compensation over the vesting period.
	Of the total purchase price, $14.6 million was allocated to developed technology and is being amortized over an estimated useful life of five years and $0.2 million was allocated to the active user base which will be amortized over an estimated useful life of two years. The assets and liabilities acquired totaled approximately $1.0 million and $1.2 million, respectively. The remaining excess purchase price of approximately $7.9 million was allocated to goodwill primarily representing the assembled workforce and synergies from the accelerated time to market. In addition, $4.3 million was recorded as a deferred tax liability representing the difference between the assigned values of the assets acquired and the tax basis of those assets, with the offset recorded as additional goodwill. The results of operations for the acquired business have been included in the consolidated statement of operations for the period subsequent to the Company’s acquisition of ThisLife. ThisLife’s results of operations for periods prior to this acquisition were not material to the consolidated statement of operations and, accordingly, pro forma financial information has not been presented.
	Penguin Digital, Inc.
	On September 14, 2012, the Company acquired Penguin Digital, Inc. ("Penguin Digital") for a total aggregate cash purchase price of $7.1 million. Penguin Digital is a mobile application development company that has an iPhone application that allows users to access their photos from iPhones or their Facebook or Instagram accounts and create customized products and gifts from their mobile devices. The acquisition was accounted for as a non-taxable purchase transaction and, accordingly, the purchase price has been allocated to the acquired tangible assets, liabilities assumed, and identifiable intangible assets acquired based on their estimated fair values on the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill. In addition, RSUs were granted to certain Penguin Digital employees contingent upon their continued employment for a period of three years. Also, PBRSUs were granted to certain Penguin Digital employees contingent on achieving certain performance milestones and continued employment for a period of three years. These awards will be recorded as stock-based compensation over the vesting period.
	Of the total purchase price, $2.9 million was allocated to developed technology and is being amortized over an estimated useful life of three years, $0.9 million was allocated to in-process research and development, and $0.2 million was allocated to the active user base which will be amortized over an estimated useful life of two years. The assets and liabilities acquired totaled approximately $0.1 million and $0.2 million, respectively. The remaining excess purchase price of approximately $3.2 million was allocated to goodwill primarily representing the assembled workforce and synergies from the accelerated time to market. In addition, $0.9 million was recorded as a deferred tax liability which represents the difference between the assigned values of the assets acquired and the tax basis of those assets offset by net operating loss carryforwards. The offset is recorded as additional goodwill. The results of operations for the acquired business have been included in the consolidated statement of operations for the period subsequent to the acquisition. Penguin Digital’s results of operations for periods prior to this acquisition were not material to the consolidated statement of income and, accordingly, pro forma financial information has not been presented.
	Photoccino Ltd.
	On May 25, 2012, the Company acquired Photoccino Ltd. (“Photoccino”) for a total aggregate cash purchase price of $4.6 million. Photoccino has developed technologies for photo ranking, analysis and organization which will allow customers to more efficiently organize and select the best photos from their archives so they can quickly and easily create photo books, calendars, cards, and photo gifts. Photoccino’s technology applies proprietary algorithms to analyze and evaluate the quality and content of photos, ranks them, and automatically creates photo products using the customer’s best images. The acquisition was accounted for as a non-taxable purchase transaction and, accordingly, the purchase price has been allocated to the acquired tangible assets, liabilities assumed, and identifiable intangible assets acquired based on their estimated fair values on the acquisition date. The excess of the purchase price over the aggregate fair values was recorded as goodwill. In addition, restricted stock awards were granted to certain Photoccino employees contingent upon their continued employment for a period of three years and will be recorded as stock-based compensation over the vesting period.
	Of the total purchase price, $3.0 million was allocated to developed technology and is being amortized over an estimated useful life of five years, $0.7 million was allocated to in-process research and development, and $0.1 million was allocated to non-compete agreements with the founders which will be amortized over an estimated useful life of two years. The assets and liabilities acquired totaled approximately $0.1 million. The remaining excess purchase price of approximately $0.7 million was allocated to goodwill primarily representing the assembled workforce. In addition, $0.9 million was recorded as a deferred tax liability representing the difference between the assigned values of the assets acquired and the tax basis of those assets, with the offset recorded as additional goodwill. The results of operations for the acquired business have been included in the consolidated statement of operations for the period subsequent to the Company’s acquisition of Photoccino. Photoccino’s results of operations for periods prior to this acquisition were not material to the consolidated statement of operations and, accordingly, pro forma financial information has not been presented.
	Purchased Intangible Assets
	Eastman Kodak Gallery Assets
	On March 1, 2012, the Company entered into an agreement with Kodak for the proposed sale of certain assets of its Kodak Gallery online photo services business for $23.8 million through a court-supervised auction process. On April 30, 2012, the transaction was approved by the bankruptcy court and on May 2, 2012 the transaction closed.  The Company paid $19.0 million at close and the remaining $4.8 million at the end of the transition period, which was during 2012.  This acquisition was accounted for as an asset acquisition and as such the Company has capitalized transaction costs of approximately $0.6 million, for a total purchase price of $24.4 million.  The purchase price was allocated to a single asset, customer list, which will be amortized over its estimated useful life of four years.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Leases
	The Company leases office and production space under various non-cancelable operating leases that expire no later than January 2023. Rent expense was $7.2 million, $5.8 million and $4.8 million, for the years ended December 31, 2014, 2013 and 2012, respectively.
	Rent expense is recorded on a straight-line basis over the lease term. When a lease provides for fixed escalations of the minimum rental payments, the difference between the straight-line rent charged to expense, and the amount payable under the lease is recognized as deferred rent.
	The Company has non-cancelable operating leases for certain production equipment with terms ranging from four to five years. As of December 31, 2014, the total outstanding obligation under all equipment operating leases was $22.1 million.
	The Company also has production equipment under capital lease. During the year ended December 31, 2014, the Company modified certain existing equipment lease agreements which resulted in the leases being reclassified from operating to capital leases. The Company also entered into new equipment leases with terms which resulted in capital lease treatment.
	At December 31, 2014, the total future minimum payments under non-cancelable operating and capital leases are as follows (in thousands):
		Operating		Capital Leases
		Leases
	Year Ending:
	2015	$	14,585	$	10,026
	2016	11,557		9,856
	2017	8,666		9,589
	2018	4,681		8,754
	2019	2,041		5,322
	Thereafter	2,565		602
	Total minimum lease payments	$	44,095	44,149
	Less: amount representing interest			(2,947		)
	Present value of future minimum lease payments			41,202
	Less: current portion			(8,905		)
	Non-current portion of capital lease obligations			$	32,297
	Purchase obligations consist of non-cancelable marketing and service agreements and co-location services that expire at various dates through the year 2020. As of December 31, 2014, the Company’s purchase obligations totaled $99.2 million. At December 31, 2014, the total future minimum payments under these purchase obligations are as follows (in thousands):
	Year Ending:
	2015	$	18,383
	2016	19,238
	2017	18,840
	2018	16,082
	2019	15,312
	Thereafter	11,334
	Total minimum purchase obligations	$	99,189
	Build-to-suit Lease
	During the year ended December 31, 2012, the Company executed a lease for a new 300,000 square foot east coast production and customer service facility in Fort Mill, South Carolina. This facility replaced the Company's current east coast production facility in Charlotte, North Carolina. In order for the facility to meet the Company's operating specifications, both the landlord and the Company made structural changes as part of the uplift of the building, and as a result, the Company has concluded that it was the “deemed owner” of the building (for accounting purposes only) during the construction period. Accordingly, at lease inception, the Company recorded an asset of $4.9 million, representing its estimate of the fair market value of the building, and a corresponding construction financing obligation, recorded as a component of other non-current liabilities. The Company increased the asset and financing obligations by $3.1 million and $1.5 million for building uplift costs incurred by the landlord during 2013 and 2012, respectively.
	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 provides additional production capacity. Both the landlord and the Company incurred costs to construct the facility according to the Company's operating specifications, and as a result, the Company has concluded that it was the “deemed owner” of the building (for accounting purposes only) during the construction period. Accordingly, the Company recorded an asset and corresponding construction financing obligation, as a component of non-current liabilities, of $13.7 million and 7.0 million for building uplift costs incurred by the landlord during 2014 and 2013, respectively.
	Also during the year ended December 31, 2013 the Company executed a lease for a new 237,000 square foot production facility in Tempe, Arizona. This facility will consolidate all of the Company's locations in the greater Phoenix area 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 December 31, 2014, the landlord incurred $9.1 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.
	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.
	Construction of the Fort Mill, South Carolina facility and the Shakopee, Minnesota facility were completed in the second quarter of 2013 and 2014, respectfully, and at that time the Company concluded that it had forms of continued economic involvement in the facility. As a result, the Company did not comply with provisions for sale-leaseback accounting and the buildings are being accounted for as a financing obligation.
	At December 31, 2014, the total future rent payments under these build-to-suit leases are as follows (in thousands):
	Year Ending:
	2015	$	4,798
	2016	6,088
	2017	6,224
	2018	6,364
	2019	6,507
	Thereafter	33,127
	Total future rent payments under build-to-suit leases	$	63,108
	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 December 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 0.500% to 1.25% per annum for Base Rate loans and 1.50% to 2.250% 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 December 31, 2014, the Company is in compliance with all of its 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.
	The Company incurred $0.5 million of Credit Facility origination costs during the twelve months ended December 31, 2013, related to the amendment and extension of the agreement. These costs have been capitalized within prepaid expenses for the current portion and other assets for the non-current portion. These fees are being amortized over the remaining term of the Credit Facility as a component of interest expense.
	Legal Matters
	The Company is subject to the various legal proceedings and claims discussed below as well as certain other legal proceedings and claims that have not been fully resolved and that have arisen in the ordinary course of 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. Cases that previously were disclosed may no longer be described because of rulings in the case, settlements, changes in our business or other developments rendering them, in our judgment, no longer material to our business, financial position or results of operations.
	The State of Delaware v. Shutterfly, Inc.
	On May 1, 2014, the State of Delaware filed a complaint against Shutterfly for alleged violations of the Delaware False Claims and Reporting Act, 6 Del C. § 1203(b)(2). The complaint asserts that Shutterfly failed to report and remit to Delaware cash equal to the balances on unused gift cards under the Delaware Escheats Law, 12 Del. C. § 1101 et seq. The Company believes the suit is without merit.
	In 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.

StockBased_Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2014
Share-based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation
	1999 Stock Plan
	In September 1999, the Company adopted the 1999 Stock Plan (the “1999 Plan”). Under the 1999 Plan, the Company issued shares of common stock and options to purchase common stock to employees, directors and consultants. Options granted under the Plan were incentive stock options or non-qualified stock options. Incentive stock options (“ISO”) were granted only to Company employees, which includes officers and directors of the Company. Non-qualified stock options (“NSO”) and stock purchase rights were able to be granted to employees and consultants. Options under the Plan were to be granted at prices not less than 85% of the deemed fair value of the shares on the date of the grant as determined by the Company’s Board of Directors (“the Board”), provided, however, that (i) the exercise price of an ISO and NSO was not less than 100% and 85% of the deemed fair value of the shares on the date of grant, respectively, and (ii) the exercise price of an ISO and NSO granted to a 10% stockholder was not less than 110% of the deemed fair value of the shares on the date of grant. The Board determined the period over which options became exercisable. The term of the options was to be no longer than five years for ISOs for which the grantee owns greater than 10% of the voting power of all classes of stock and no longer than ten years for all other options. Options granted under the 1999 Plan generally vested over four years. The Board of Directors determined that no further grants of awards under the 1999 Plan would be made after the Company’s IPO.
	2006 Equity Incentive Plan
	In June 2006, the Board adopted, and in September 2006 the Company’s stockholders approved, the 2006 Equity Incentive Plan (the “2006 Plan”), and all shares of common stock available for grant under the 1999 Plan transferred to the 2006 Plan. The 2006 Plan provides for the grant of ISOs to employees (including officers and directors who are also employees) of the Company or of a parent or subsidiary of the Company, and for the grant of all other types of awards to employees, officers, directors, consultants, independent contractors and advisors of the Company or any parent or subsidiary of the Company, provided such consultants, independent contractors and advisors render bona-fide services not in connection with the offer and sale of securities in a capital-raising transaction. Other types of awards under the 2006 Plan include NSOs, restricted stock awards, stock bonus awards, restricted stock units, and performance shares.
	Options issued under the 2006 Plan are generally for periods not to exceed 10 years and are issued at the fair value of the shares of common stock on the date of grant as determined by the Board. The fair value of the Company’s common stock is determined by the last sale price of such stock on the NASDAQ Global Select Market. Options issued under the 2006 Plan typically vest with respect to 25% of the shares one year after the options’ vesting commencement date, and the remainder ratably on a monthly basis over the following three years.
	The 2006 Plan provides for automatic increases in the maximum number of shares available for issuance on January 1, 2011, 2012, and 2013 by 3.5%, 3.3%, and 3.1%, respectively, of the number of shares of the Company’s common stock issued and outstanding on the December 31 immediately prior to the date of increase and for automatic increases on January 1, 2014 and January 1, 2015 by 1,200,000 shares of the Company's common stock.
	Tiny Prints 2008 Equity Incentive Plan
	In April 2011, in connection with the acquisition of Tiny Prints, the Company converted and assumed the equity awards granted under the Tiny Prints 2008 Equity Incentive Plan (the “Tiny Prints Plan”).   Awards granted under the Tiny Prints Plan include ISO, NSO, and restricted share awards, all of which generally vest with respect to 25% of the shares one year after the options’ vesting commencement date, and the remainder ratably on a monthly basis over the following three years.  Options under this plan will expire if not exercised within 10 years from the date of grant, and options and awards will expire if forfeited due to termination.
	Stock Option Activity
	A summary of the Company’s stock option activity at December 31, 2014 and changes during the period are presented in the table below (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	(190	)	17.09
	Forfeited, canceled or expired	(24	)	31.84
	Balances, December 31, 2014	402		$	25.42	4.5	$	7,200
	Options vested and expected to vest at December 31, 2014	399		$	25.39	4.5	$	7,169
	Options vested at December 31, 2014	356		$	24.36	4.1	$	6,746
	As of December 31, 2013 and 2012, there were 462,000 and 1,677,000 options vested, respectively.
	During the year ended December 31, 2014, the Company did not grant any stock options. In the fiscal years ended December 31, 2013 and 2012, the Company granted stock options to purchase an aggregate of 2,000 and 139,000 shares of common stock, respectively, with a weighted average grant-date fair value of $12.55 and $12.93 per share, respectively.
	The total intrinsic value of options exercised during the twelve months ended December 31, 2014, 2013 and 2012 was $6.1 million, $41.5 million and $12.3 million, respectively. Net cash proceeds from the exercise of stock options were $3.2 million for the twelve months ended December 31, 2014.
	Valuation of Stock Options
	The Company estimated the fair value of each option award on the date of grant using the Black-Scholes option-pricing model and the assumptions noted in the following table. The Company calculated volatility using an average of its historical and implied volatilities as it had sufficient public trading history to cover the entire expected term. The expected term of options gave consideration to historical exercises, post vest cancellations and the options contractual term. The risk-free rate for the expected term of the option is based on the U.S. Treasury Constant Maturity at the time of grant. The assumptions used to value options granted during 2013 and 2012 were as follows:
		Year Ended December 31,
		2013		2012
	Dividend yield	—		—
	Annual risk free rate of return	0.8	%	0.8	%
	Expected volatility	47	%	56.5	%
	Expected term (years)	4.2		4.3
	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 is amortized on a straight-line basis over the requisite service period.
	Restricted Stock Unit Activity
	A summary of the Company’s restricted stock unit activity for the twelve months ended December 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	1,889		45.34
	Vested	(1,481	)	38.36
	Forfeited	(566	)	41.99
	Awarded and unvested, December 31, 2014	3,704		$	42.17
	Restricted stock units expected to vest, December 31, 2014	3,314
	The chart below summarizes grant activity during the twelve months ended December 31, 2014 by equity plan (share numbers in thousands):
		Grants in 2014
	2006 Equity Incentive Plan
	Restricted stock units (1)	1,356
	Performance-based restricted stock units (2) (3)	341
	Total grants under 2006 Plan	1,697
	Inducement Awards
	Restricted stock units (4)	96
	Performance-based restricted stock units (4)	96
	Total grants pursuant to Inducement Awards	192
	Total awards granted in 2014	1,889
	(1) Awards issued under the 2006 Plan include restricted stock unit awards granted to new and current employees. Awards issued under this plan typically vest over a three or four year total vesting term.
	(2) Includes performance-based restricted stock units (PBRSUs) issued under the 2006 Equity Incentive Plan to specific employees which are tied to the Company’s 2014 financial performance and which have four year service criteria.  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.  As of December 31, 2014, the performance criteria for the fiscal year was met and the associated stock-based compensation has been recognized.
	-3	Also includes the PBRSUs issued to the Chief Executive Officer which are tied to multi-year performance metrics and the Company's stock performance relative to market measures. These PBRSUs also have a three year service criteria. The Company valued the market criteria using a Monte Carlo valuation model and took into consideration the likelihood of the market criteria being achieved. Compensation cost associated with these PBRSUs is recognized on an accelerated attribution model and ultimately based on whether or not satisfaction of the performance and market criteria is probable.  As of December 31, 2014, the performance criteria and market criteria appear to be attainable and the Company recognized the associated stock-based compensation.
	(4) Inducement awards are issued to newly hired officers and to certain new employees from acquired companies. During 2014, inducement awards included time-based and performance based awards issued to two newly hired officers and vest over four years.
	During the years ended December 31, 2014 and 2013, the fair value of awards vested were $56.8 million and $35.9 million, respectively.
	At December 31, 2014, the Company had $97.9 million of total unrecognized stock-based compensation expense, net of estimated forfeitures, related to stock options and RSUs that will be recognized over a weighted-average period of approximately two years.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	Income before benefit from/(provision for) income taxes is as follows (in thousands):
		Year Ended December 31,
		2014				2013				2012
	United States	$	(10,317	)		$	12,570			$	40,024
	Foreign	338				350				134
	Total	$	(9,979	)		$	12,920			$	40,158
	The components of the benefit from/(provision for) income taxes are as follows (in thousands):
		December 31,
		2014				2013				2012
	Federal:
	Current	$	(487	)		$	1,181			$	14,605
	Deferred	(1,381		)		1,870				(316		)
		(1,868		)		3,051				14,289
	State:
	Current	704				1,711				2,383
	Deferred	(1,038		)		(1,234		)		455
		(334		)		477				2,838
	Foreign:
	Current	268				412				118
	Deferred	(185		)		(305		)		(85		)
		83				107				33
	Total income tax expense (benefit):
	Current	485				3,304				17,106
	Deferred	(2,604		)		331				54
		$	(2,119	)		$	3,635			$	17,160
	The Company’s actual tax expense differed from the statutory federal income tax rate, as follows:
		December 31,
		2014			2013			2012
	Income tax expense at statutory rate	35	%		35	%		35	%
	State income taxes	20.1			(4.5	)		0.9
	Stock-based compensation	2.2			(15.2	)		1.1
	R&D tax credit	14.8			(17.1	)		—
	Non-deductible executive compensation	(29.7	)		20.6			—
	Valuation allowance	(17.2	)		8			5.5
	Other	(4.0	)		1.3			0.2
		21.2	%		28.1	%		42.7	%
	At December 31, 2014, the Company had approximately $50.4 million, $45.4 million, and $16.7 million of federal, California and other state jurisdictions net operating loss carryforwards, respectively, to reduce future taxable income. $33.2 million, $35.0 million, and $2.7 million of the Federal, California, and other state jurisdiction net operating loss carryforwards are associated with windfall tax benefits and will be recorded as additional paid-in capital when realized. These carryforwards will expire beginning in the year 2021 and 2016 for federal and California purposes, respectively, and no sooner than 2020 for the portion related to other state jurisdictions, if not utilized.
	The Company also had research and development credit carryforwards of approximately $8.9 million and $9.2 million for federal and state income tax purposes, respectively, at December 31, 2014, of which $7.4 million and $2.5 million is associated with windfall tax benefits for federal and state income tax purposes, respectively, that will be recorded as additional paid-in capital when realized. The research and development credits may be carried forward over a period of 20 years for federal tax purposes, indefinitely for California tax purposes, and 15 years for Arizona purposes. The research and development tax credit will expire starting in 2021 for federal and 2024 for Arizona.
	Internal Revenue Code limits the use of net operating loss and tax credit carryforwards in the case of an “ownership change” of a corporation. Any ownership changes, as defined, may restrict utilization of carryforwards.
	The components of the net deferred tax assets as of December 31, 2014 and 2013 are as follows (in thousands):
		December 31,
		2014				2013
	Deferred tax assets:
	Net operating loss carryforwards	$	6,672			$	4,994
	Reserves and other tax benefits	41,549				30,704
	Tax credits	7,211				5,296
	Deferred tax assets	55,432				40,994
	Valuation allowance	(4,850		)		(2,872		)
	Net deferred tax assets	50,582				38,122
	Deferred tax liabilities:
	Depreciation and amortization	(63,478		)		(53,655		)
	Net deferred tax assets / (liabilities)	$	(12,896	)		$	(15,533	)
	Realization of deferred tax assets is dependent upon the generation of future taxable income, if any, the timing and amount of which are uncertain. The valuation allowance related to deferred income taxes was $4.9 million as of December 31, 2014 and $2.9 million as of December 31, 2013. The increase in the valuation allowance was attributed to the Company's generation of certain California and South Carolina deferred tax assets which it believes it will not be able to utilize.
	As of December 31, 2014, the Company had $8.6 million of unrecognized tax benefits. A reconciliation of the beginning and ending amounts of unrecognized income tax benefits is as follows (in thousands):
		2014				2013				2012
	Balance of unrecognized tax benefits at January 1	$	7,035			$	5,445			$	4,364
	Additions for tax positions of prior years	41				22				137
	Additions for tax positions related to current year	1,502				1,811				1,009
	Reductions for tax positions of prior years	(12		)		(243		)		(65		)
	Balance of unrecognized tax benefits at December 31	$	8,566			$	7,035			$	5,445
	If the $8.6 million of unrecognized tax benefits as of December 31, 2014 is recognized, approximately $4.9 million would decrease the effective tax rate in the period in which each of the benefits is recognized. The remaining amount would be offset by the reversal of related deferred tax assets on which a valuation allowance is placed. The Company does not expect any material changes to its unrecognized tax benefits within the next twelve months.
	The Company provides for federal income taxes on the earnings of its foreign subsidiary, as such, earnings are currently recognized as US taxable income.
	As of December 31, 2014, the Company is subject to taxation in the United States and Israel. The Company is subject to examination for tax years including and after 2010 for federal income taxes. Certain tax years outside the normal statute of limitation remain open to audit by tax authorities due to tax attributes generated in those early years which have been carried forward and may be audited in subsequent years when utilized.
The Company is currently under audit by the Internal Revenue Service (IRS) for the tax year ended December 31, 2010. The Company is not aware of any proposed adjustments and it believes that the final outcome of these examinations or agreements will not have a material effect on its results of operations as of December 31, 2014.

Employee_Benefit_Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure
Employee Benefit Plan	Employee Benefit Plan
	In 2000, the Company established a 401(k) plan under the provisions of which eligible employees may contribute an amount up to 50% of their compensation on a pre-tax basis, subject to IRS limitations. The Company matches employees’ contributions at the discretion of the Board.
	In 2014 and 2013, there were no discretionary contributions.

Share_Repurchase_Program

Share Repurchase Program	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Share Repurchase Program	Share Repurchase Program
	On October 24, 2012, the Company's Board of Directors conditionally authorized and the Audit Committee subsequently 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 the Company to repurchase any dollar amount or number of shares; and may be suspended or discontinued at any time. The share repurchase authorizations permit 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. As of December 31, 2014, the remaining authorized amount for stock repurchases under the share repurchase program was $11.2 million.
	In 2014, the Company repurchased 1,961,085 shares of its outstanding common stock at an average of $45.29 per share pursuant to the share repurchase program.
	In 2013, the Company repurchased 70,313 shares of its outstanding common stock at an average of $31.87 per share pursuant to the share repurchase program.
	In the second quarter of 2013, the Company repurchased 631,180 shares from purchasers of its 0.25% senior convertible notes in privately negotiated transactions of outside the share repurchase program using $30.0 million of the net proceeds of its issuance of the notes.
	All repurchased shares of common stock have been retired.

Convertible_Senior_Notes

Convertible Senior Notes	12 Months Ended
	Dec. 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 December 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):
			December 31, 2014			December 31, 2013
	Liability component:
	Principal		$	300,000		$	300,000
	Less: debt discount, net of amortization		(44,782		)	(56,507		)
	Net carrying amount		$	255,218		$	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 issuance costs in equity.
	The following table sets forth total interest expense recognized related to the Notes (in thousands):
			Year Ended			Year Ended
			December 31, 2014			December 31, 2013
	0.25% coupon		$	750		$	469
	Amortization of debt issuance costs		1,179			705
	Amortization of debt discount		11,726			7,002
			$	13,655		$	8,176
	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.

Segment_Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting
	The Company reports segment information based on the "management" approach. The management approach designates the internal reporting used by management for making decisions and assessing performance as the source of its reportable segments.
	The Company's Chief Operating Decision Maker ("CODM") function is comprised of its chief executive officer. Effective in the fourth quarter of 2014, the Company defined two reportable segments based on factors such as how management manages the operations and how the chief operating decision maker views results. Prior to the fourth quarter of 2014, the Company reported as a single operating and reportable segment. Accordingly, the Company has recasted its financial information and disclosures for prior periods to reflect the segment disclosures as if the current operating structure had been in effect throughout all periods presented.
	The CODM function uses gross profit to evaluate the performance of the segments and allocate resources. Management considers gross margin to be the appropriate metric to evaluate and compare the ongoing performance of each reportable segment as it is the level which direct costs associated with the performance of the segment are monitored. Cost of revenue for the Consumer segment consists of costs directly attributable to the production of personalized products for all of the Company's brands, including direct materials, shipping charges, and payroll and related expenses for direct labor; rent for production facilities, and depreciation of production equipment and facilities where we are the deemed owner. Cost of revenue for the Enterprise segment consists of costs which are direct and incremental to the Enterprise business. These include production costs of Enterprise products, such as materials, labor and printing costs and costs associated with third-party production of goods. They also include shipping costs and indirect overhead.
	Due to the nature of the Company's operations, a majority of its assets are utilized across all segments. In addition, segment assets are not reported to, or used by, the CODM to allocate resources or assess performance of the Company's segments. Accordingly, the Company has not disclosed asset information by segment.
	The Company’s segments are determined based on the products and services it provides and how the CODM evaluates the business. The Company has the following reportable segments:
	Consumer - Includes sales from the Company's brands and are derived from the sale of photo-based products, such as photo books, stationery and greeting cards, other photo-based merchandise, photo prints, and the related shipping revenues as well as rental revenue from its BorrowLenses brand.
	Enterprise - Includes revenues primarily from variable, four-color direct marketing collateral manufactured and fulfilled for business customers.
	In addition to the above reportable segments, the Company has a corporate category that includes activities that are not directly attributable or allocable to a specific segment. This category consists of stock-based compensation and amortization of intangible assets.
	The Company's segment results for fiscal 2014, 2013 and 2012 were as follows (dollars in thousands):
		Year Ended December 31,
		2014			2013			2012
	Consumer
	Net revenues	$	870,959		$	745,970		$	613,445
	Cost of net revenues	394,265			327,145			263,962
	Gross profit	$	476,694		$	418,825		$	349,483
	Gross profit as a percentage of net revenues	55		%	56		%	57		%
	Enterprise
	Net revenues	$	50,621		$	37,672		$	27,179
	Cost of net revenues	43,456			29,480			22,803
	Gross profit	$	7,165		$	8,192		$	4,376
	Gross profit as a percentage of net revenues	14		%	22		%	16		%
	Corporate
	Net revenues	$	—		$	—		$	—
	Cost of net revenues	14,999			12,968			8,092
	Gross profit	$	(14,999	)	$	(12,968	)	$	(8,092	)
	Consolidated
	Net revenues	$	921,580		$	783,642		$	640,624
	Cost of net revenues	452,720			369,593			294,857
	Gross profit	$	468,860		$	414,049		$	345,767
	Gross profit as a percentage of net revenues	51		%	53		%	54		%

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions
Related Party Transactions	Related Party Transactions
	Shutterfly’s Chief Executive Officer, Jeffrey Housenbold, was appointed to Chegg, Inc.'s ("Chegg") Board of Directors in May 2013 and to Groupon, Inc.'s ("Groupon") Board of Directors in October 2013. During the year ended December 31, 2014, Shutterfly conducted business with both Groupon and Chegg. Shutterfly's business with Groupon during the year consisted primarily of offering Shutterfly’s products as part of Groupon’s Flash deals. Shutterfly's business with Chegg primarily consisted of advertising campaigns, and commercial print services with its Enterprise segment.
	During the year ended December 31, 2014, Shutterfly paid approximately $3.3 million in commissions to Groupon related to these Flash deals. As of December 31, 2014, the Company had a receivable balance of approximately $0.5 million with Groupon and $0.5 million with Chegg. During the year ended December 31, 2014, Shutterfly earned revenue of approximately $0.5 million from Chegg. Management believes that these transactions are at arms length and on similar terms as would have been obtained from unaffiliated third parties.

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Data
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited)
	Summarized quarterly financial data for the years ended December 31, 2014 and 2013 are as follows (in thousands, except per share amounts):
		Year Ended December 31, 2014
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter
	Net revenues	$	137,099		$	159,148		$	142,008		$	483,325
	Gross profit	$	60,756		$	75,813		$	52,282		$	280,009
	Net income/(loss)	$	(34,214	)	$	(27,052	)	$	(46,244	)	$	99,650
	Net income/(loss) per common share:
	Basic	$	(0.89	)	$	(0.70	)	$	(1.20	)	$	2.59
	Diluted	$	(0.89	)	$	(0.70	)	$	(1.20	)	$	2.51
		Year Ended December 31, 2013
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter
	Net revenues	$	116,708		$	133,461		$	122,685		$	410,788
	Gross profit	$	54,855		$	61,745		$	51,377		$	246,072
	Net income/(loss)	$	(12,405	)	$	(11,811	)	$	(10,148	)	$	43,649
	Net income/(loss) per common share:
	Basic	$	(0.33	)	$	(0.31	)	$	(0.27	)	$	1.15
	Diluted	$	(0.33	)	$	(0.31	)	$	(0.27	)	$	1.1

Subsequent_Event

Subsequent Event	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event
	Share Repurchase Program
	On February 9, 2015, the Company's Board of Directors approved an increase to the share repurchase program up to $300.0 million in addition to amounts remaining under the previous share repurchase authorization. The share repurchase authorization, which is 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. The share repurchase program is subject to prevailing market conditions and other considerations; does not require the Company to repurchase any dollar amount or number of shares; and may be suspended or discontinued at any time.
	Restructuring
	In February 2015, the Company announced its plans to discontinue the Treat brand and migrate the one-to-one greeting offering to the Shutterfly brand by the end of the first quarter of 2015. Shutterfly also announced plans to close its manufacturing facility located in Elmsford, New York and redirect all production and customer service operations throughout the Shutterfly manufacturing network by the end of the third quarter of 2015. Shutterfly expects to incur certain restructuring costs during 2015 related to these events.

Schedule_II_Valuation_and_Qual

Schedule II Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]
Schedule II Valuation and Qualifying Accounts
				Additions
		Balance at		Charged to		Charged to	Deductions		Balance at
		Beginning of		Costs and		Other			End of
		Period		Expenses		Accounts			Period
		In thousands
	Allowance for Doubtful Accounts Receivable
	Year ended December 31, 2012	$	334	303		—	(406	)	$	231
	Year ended December 31, 2013	$	231	(140	)	—	(79	)	$	12
	Year ended December 31, 2014	$	12	7		—	(18	)	$	1
	Tax Valuation Allowance
	Year ended December 31, 2012	$	—	2,203		—	—		$	2,203
	Year ended December 31, 2013	$	2,203	1,049		—	(380	)	$	2,872
	Year ended December 31, 2014	$	2,872	1,978		—	—		$	4,850

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation
	The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. The functional currency of its Israeli subsidiary is the U.S. Dollar, as such, exchange rate fluctuations are recorded as a part of earnings. All intercompany transactions and balances have been eliminated.
Use of Estimates	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Items subject to such estimates and assumptions include, among others, intangible assets valuation, useful lives, excess and obsolete inventories, restructuring, legal contingencies, valuation allowances, restricted stock awards with market criteria, provision for sales returns, and allowance for doubtful accounts. Actual results could differ from these estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents
	The Company considers all highly liquid investments purchased with original maturities of three months or less to be cash equivalents. Management determines the appropriate classification of cash equivalents at the time of purchase and reevaluates such designations at each balance sheet date. Cash equivalents consist of money market funds, primarily invested in U.S. Treasury securities.
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.
Investment	Investments
	Investments, which may include agency bonds, corporate debt securities, and U.S. government 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 year ended December 31, 2014.
Concentration of Credit Risk	Concentration of Credit Risk
	Financial instruments that potentially subject the Company to credit risk consist principally of cash, cash equivalents, investments, and accounts receivable. As of December 31, 2014, the Company's cash and cash equivalents were maintained by financial institutions in the United States and its deposits may be in excess of insured limits. The Company believes that the financial institutions that hold its investments are financially sound and, accordingly, minimal credit risk exists with respect to these investments.
	The Company’s accounts receivable are derived primarily from sales to customers located in the United States who make payments through credit cards, sales of the Company's products in retail stores, sales of enterprise services, and revenue generated from online advertisements posted on the Company's websites. Credit card receivables settle relatively quickly and the Company's historical experience of credit card losses have not been material and have been within management’s expectations. Excluding amounts due from credit cards of customers, as of December 31, 2014, two Enterprise customers accounted for 25% and 18% of the Company’s net accounts receivable, respectively. No other customers accounted for more than 10% of net accounts receivable as of December 31, 2014. As of December 31, 2013, excluding amounts due from credit cards of customers, one Enterprise customer accounted for 28% of the Company’s net accounts receivable. No other customers accounted for more than 10% of net accounts receivable as of December 31, 2013.
Inventories	Inventories
	Inventories are stated at the lower of cost on a first-in, first-out basis or net realizable value. The value of inventories is reduced by estimates for excess and obsolete inventories. The estimate for excess and obsolete inventories is based upon management’s review of utilization of inventories in light of projected sales, current market conditions and market trends. Inventories are primarily raw materials and consist principally of paper, photo book covers and packaging supplies.
Deferred Costs	Deferred Costs
	Deferred costs are the incremental costs directly associated with flash deal promotions through group buying websites.  These costs are paid and deferred at the time of the flash deal, and recognized when the redeemed products are shipped.  Amortization of deferred costs is included in sales and marketing expense in the accompanying consolidated statements of operations.
Property and Equipment	Property and Equipment
	Property and equipment are stated at historical cost, less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated lives of the assets, generally three to five years, and are allocated between cost of net revenues and operating expenses. Rental assets are depreciated over their estimated useful lives, generally five to six years as component of cost of net revenues, to an estimated net realizable value. Leasehold improvements are amortized over their estimated useful lives, or the lease term if shorter, generally three to ten years. Upon retirement or sale, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is reflected in operating expenses, except for rental assets, which are recognized in cost of net revenues. Major additions and improvements are capitalized, while replacements, maintenance and repairs that do not extend the life of the asset are charged to expense as incurred.
Software and Website Development Costs	Software and Website Development Costs
	The Company capitalizes eligible costs associated with website development and software developed or obtained for internal use. Accordingly, the Company expenses all costs that relate to the planning and post implementation phases. Payroll and payroll related costs and stock-based compensation incurred in the development phase are capitalized and amortized over the product’s estimated useful life, generally three years. Costs associated with minor enhancements and maintenance for the Company’s websites are expensed as incurred.
Long-Lived Assets	Long-Lived Assets
	The Company reviews long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability is measured by comparison of the carrying amount to the future net cash flows which the assets are expected to generate. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the projected discounted future cash flows arising from the asset using a discount rate determined by management to be commensurate with the risk inherent to the Company’s current business model.
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in a business combination. Intangible assets resulting from the acquisition of entities accounted for using the purchase method of accounting are estimated by management based on the fair value of assets received. Intangible assets are amortized on a straight-line basis over the estimated useful lives which range from one to sixteen years, and the amortization is allocated between cost of net revenues and operating expenses. Goodwill and intangible assets with indefinite lives are not subject to amortization, but are tested for impairment on an annual basis during the fourth quarter or whenever events or changes in circumstances indicate the carrying amount of these assets may not be recoverable.
	For the Company’s annual goodwill impairment analysis, the Company operates under two reporting units. The Company tests goodwill for impairment by first comparing the book value of net assets to the fair value of the reporting units. If the fair value is determined to be less than the book value or qualitative factors indicate that it is more likely than not that goodwill is impaired, a second step is performed to compute the amount of impairment as the difference between the estimated fair value of goodwill and the carrying value. The Company estimates the fair value of the reporting units using a combination of the income approach (discounted cash flows) and the market approach. Forecasts of future cash flows are based on our best estimate of future net sales and operating expenses, based primarily on expected reporting unit expansion, pricing, market segment share, and general economic conditions.
Intellectual Property Prepaid Royalties	Intellectual Property Prepaid Royalties
	The Company has patent license agreements with various third parties. The Company has accounted for these agreements as prepaid royalties that are amortized over the remaining life of the patents. Amortization expense is recorded on a straight-line basis as a component of cost of revenue. The current portion of the prepaid royalty is recorded as a component of prepaid expenses and the long term portion is recorded in other assets.
Lease Obligations	Lease Obligations
	The Company categorizes leases at their inception as either operating or capital leases. On certain of our lease agreements, the Company may receive rent holidays and other incentives. The Company recognizes lease costs on a straight-line basis without regard to deferred payment terms, such as rent holidays that defer the commencement date of required payments. Additionally, incentives the Company receives for leases categorized as operating leases are treated as a reduction of our costs over the term of the agreement.
	The Company establishes assets and liabilities for the estimated construction costs incurred under build-to-suit lease arrangements to the extent the Company is involved in the construction of structural improvements or takes construction risk prior to commencement of a lease. Upon occupancy of facilities under build-to-suit leases, the Company assesses whether these arrangements qualify for sales recognition under the sale-leaseback accounting guidance. If the Company continues to be the deemed owner, the facilities are accounted for as financing leases.
Revenue Recognition	Revenue Recognition
	The Company recognizes revenue from Consumer and Enterprise product sales, net of applicable sales tax, upon shipment of fulfilled orders, when persuasive evidence of an arrangement exists, the selling price is fixed or determinable and collection of resulting receivables is reasonably assured. Customers place Consumer product orders through the Company's websites and pay primarily using credit cards. Enterprise customers are invoiced upon fulfillment. Shipping charged to customers is recognized as revenue at the time of shipment.
	For camera, lenses, and video equipment rentals from our BorrowLenses brand, we recognize rental revenue and the related shipping and insurance revenue, ratably over the rental period. Revenue from the sale of rental equipment is recognized upon shipment of the equipment.
	For gift card sales and flash deal promotions through group buying websites, the Company recognizes revenue on a gross basis, as it is the primary obligor, when redeemed items are shipped. Revenues from sales of prepaid orders on its websites are deferred until shipment of fulfilled orders or until the prepaid period expires. The Company’s share of revenue generated from its print to retail relationships, is recognized when orders are picked up by its customers at the respective retailer.
	The Company provides its customers with a 100% satisfaction guarantee whereby products can be returned within a 30-day period for a reprint or refund. The Company maintains an allowance for estimated future returns based on historical data. The provision for estimated returns is included in accrued expenses.
	The Company periodically provides incentive offers to its customers in exchange for setting up an account and to encourage purchases. Such offers include free products and percentage discounts on current purchases. Discounts, when accepted by customers, are treated as a reduction to the purchase price of the related transaction and are presented in net revenues. Production costs related to free products are included in cost of revenues upon redemption.
	The Company’s advertising revenues are derived from the sale of online advertisements on its websites. Advertising revenues are recognized as “impressions” (i.e., the number of times that an advertisement appears in pages viewed by users of the Company's websites) are delivered; as “clicks” (which are generated each time users of the Company's websites click through the advertisements to an advertiser’s designated website) are provided to advertisers; or ratably over the term of the agreement with the expectation that the advertisement will be delivered ratably over the contract period.
Restructuring Costs	Restructuring Costs
	The Company records restructuring costs when expenses are incurred. The Company accrues for lease termination costs when the restructuring event takes place. The Company accrues for severance once the total severance pool has been calculated, approved and communicated, and recognizes the expense ratably over the required service period, from the communication date to the exit date. The Company also accelerates depreciation using a revised economic life of the leasehold improvement assets.
Advertising Costs	Advertising Costs
	Advertising costs are expensed as incurred, except for direct mail advertising which is expensed when the advertising first takes place. The Company did not have any capitalized direct mail costs at December 31, 2014 and December 31, 2013. Total advertising costs are a component of sales and marketing expenses and include print advertising, Internet advertising, such as display ads and keyword search terms and TV and radio advertising. These amounts totaled approximately $102.2 million, $87.5 million and $69.9 million during the years ended December 31, 2014, 2013 and 2012, respectively.
Stock-Based Compensation	Stock-Based Compensation
	The Company measures stock based awards at fair value and recognizes compensation expense for all share-based payment awards made to its employees and directors, including employee stock options and restricted stock awards.
	The Company estimates the fair value of stock options granted using the Black-Scholes valuation model. This model requires the Company to make estimates and assumptions including, among other things, estimates regarding the length of time an employee will retain vested stock options before exercising them, the estimated volatility of the Company's common stock price and the number of options that will be forfeited prior to vesting. The fair value is then amortized on a straight-line basis over the requisite service periods of the awards, which is generally the vesting period. Changes in these estimates and assumptions can materially affect the determination of the fair value of stock-based compensation and consequently, the related amount recognized in the Company's consolidated statements of operations.
	The cost of restricted stock awards and performance based restricted stock awards is determined using the fair value of the Company’s common stock on the date of grant. Compensation expense is recognized for restricted stock awards on a straight-line basis over the vesting period. Compensation expense associated with performance based restricted stock awards 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.
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.
	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 operations.
	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 December 31, 2014 and 2013.
	The Company is subject to taxation in the United States and Israel.
Net Income/(Loss) Per Share	Net Income/(Loss) Per Share
	Basic net income/(loss) per share attributed to common shares is computed by dividing the net income/(loss) attributable to common shares for the period by the weighted average number of common shares outstanding during the period.
	Diluted net income/(loss) per share attributed to common shares is computed by dividing the net income 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, conversion of warrants, and the impact of convertible debt.
		Year ended December 31,
		2014				2013			2012
	Net income/(loss) per share:	(in thousands, except per share amounts)
	Numerator
	Net income/(loss)	$	(7,860	)		$	9,285		$	22,998
	Denominator
	Denominator for basic net income/(loss) per share
	Weighted-average common shares outstanding	38,452				37,680			35,826
	Dilutive effect of stock options and restricted awards	—				1,813			1,606
	Denominator for diluted net income per share	38,452				39,493			37,432
	Net income/(loss) per share
	Basic	$	(0.20	)		$	0.25		$	0.64
	Diluted	$	(0.20	)		$	0.24		$	0.61
	The following weighted-average outstanding stock options and restricted stock units were excluded from the computation of diluted net income/(loss) per common share for the periods presented because including them would have had an anti-dilutive effect (in thousands):
		Year ended December 31,
		2014			2013			2012
	Stock options and restricted stock units	4,205			24			748
Comprehensive Income	Comprehensive Income
	Comprehensive income is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. Comprehensive income is composed of net income/(loss) and other comprehensive income/(loss). The Company's other comprehensive income/(loss) consists of unrealized gains and losses on marketable securities classified as available-for-sale.
Segment Reporting	Segment Reporting
	The Company reports as two operating segments with the Chief Executive Officer (“CEO”) acting as the Company’s chief operating decision maker. The Company defined two reportable segments based on factors such as how management manages the operations and how its chief operating decision maker views results.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	In May 2014, the FASB issued new accounting guidance related to revenue recognition. This new standard will replace all current U.S. GAAP guidance on this topic and eliminate all industry-specific guidance. The new revenue recognition standard provides a unified model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. This guidance will be effective for the Company beginning January 1, 2017 and can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. The Company is evaluating the impact of adopting this new accounting standard on its financial statements.
	In August 2014, the FASB issued new guidance related to the disclosures around going concern. The new standard provides guidance around management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. Early adoption is permitted. The adoption of this standard is not expected to have a material impact on the Company's financial statements.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Net Income/(Loss) Per Share	Diluted net income/(loss) per share attributed to common shares is computed by dividing the net income 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, conversion of warrants, and the impact of convertible debt.
		Year ended December 31,
		2014				2013			2012
	Net income/(loss) per share:	(in thousands, except per share amounts)
	Numerator
	Net income/(loss)	$	(7,860	)		$	9,285		$	22,998
	Denominator
	Denominator for basic net income/(loss) per share
	Weighted-average common shares outstanding	38,452				37,680			35,826
	Dilutive effect of stock options and restricted awards	—				1,813			1,606
	Denominator for diluted net income per share	38,452				39,493			37,432
	Net income/(loss) per share
	Basic	$	(0.20	)		$	0.25		$	0.64
	Diluted	$	(0.20	)		$	0.24		$	0.61
Excluded from computation of diluted net income as anti-dilutive	The following weighted-average outstanding stock options and restricted stock units were excluded from the computation of diluted net income/(loss) per common share for the periods presented because including them would have had an anti-dilutive effect (in thousands):
		Year ended December 31,
		2014			2013			2012
	Stock options and restricted stock units	4,205			24			748

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure Text Block [Abstract]
Schedule of prepaid royalties, future amortization expense	Amortization of these licenses is estimated as follows (in thousands):
	Year Ending:
	2015	$	1,262
	2016	854
	2017	799
	2018	799
	2019	676
	Thereafter	3,861
		$	8,251
Schedule of prepaid expenses and other current assets	Prepaid Expenses and Other Current Assets
		December 31,
		2014				2013
		(in thousands)
	Deferred costs	$	6,911			$	4,915
	Prepaid service contracts – current portion	6,754				5,044
	Other prepaid expenses and current assets	11,318				11,301
		$	24,983			$	21,260
Schedule of other assets	Other Assets
		December 31,
		2014				2013
		(in thousands)
	Other assets	$	13,976			$	15,412
Schedule of property and equipment	Property and Equipment
		December 31,
		2014				2013
		(in thousands)
	Computer equipment and software	$	159,370			$	140,868
	Manufacturing equipment	119,495				61,342
	Capitalized software and website development costs	89,311				66,196
	Buildings under build-to-suit leases	39,307				16,452
	Leasehold improvements	20,876				17,702
	Rental equipment	14,591				11,943
	Furniture and fixtures	10,683				8,391
		453,633				322,894
	Less: Accumulated depreciation and amortization	(211,891		)		(167,167		)
	Net property and equipment	$	241,742			$	155,727
Schedule of intangible assets	Intangible Assets
	Intangible assets are comprised of the following:
			Weighted Average		December 31,
			Useful Life		2014				2013
					(in thousands)
	Purchased technology		10 years		$	104,738			$	104,553
	Less: accumulated amortization				(51,794		)		(35,653		)
					52,944				68,900
	Customer relationships		5 years		75,146				74,576
	Less: accumulated amortization				(42,086		)		(27,452		)
					33,060				47,124
	Licenses and other		3 years		7,202				6,692
	Less: accumulated amortization				(5,256		)		(4,095		)
					1,946				2,597
	Total				$	87,950			$	118,621
Schedule of intangible assets, future amortization expense	Amortization of existing intangible assets is estimated to be as follows (in thousands):
	Year Ending:
	2015		$	25,719
	2016		18,888
	2017		13,699
	2018		4,802
	2019		3,408
	Thereafter		21,434
			$	87,950
Schedule of goodwill	The following table presents goodwill balances and adjustments to those balances for each of our reportable segments (in thousands):
		Consumer				Enterprise				Consolidated			Total
	Balance, December 31, 2012	$	—			$	—			$	358,349		$	358,349
	Acquisition of business	—				—				38,957			38,957
	Goodwill adjustments	—				—				—			—
	Balance, December 31, 2013	—				—				397,306			397,306
	Acquisition of business	—				—				12,033			12,033
	Goodwill adjustments	—				—				(364		)	(364		)
	Goodwill allocation	372,072				36,903				(408,975		)	—
	Balance, December 31, 2014	$	372,072			$	36,903			$	—		$	408,975
Schedule of accrued liabilities	Accrued Liabilities
		December 31,
		2014				2013
		(in thousands)
	Accrued production costs	$	32,814			$	34,525
	Accrued marketing expenses	30,835				26,203
	Accrued income and sales tax	18,149				16,465
	Accrued compensation	16,337				14,872
	Accrued purchases	11,809				3,723
	Capital lease obligations	8,905				1,530
	Accrued consulting	6,418				4,548
	Accrued other	10,218				5,582
		$	135,485			$	107,448
Schedule of other liabilities	Other Liabilities
		December 31,
		2014				2013
		(in thousands)
	Financing obligations	$	38,529			$	16,354
	Capital lease obligations	32,297				4,530
	Other liabilities	3,352				5,457
		$	74,178			$	26,341

Investments_Tables

Investments (Tables)	12 Months Ended
	Dec. 31, 2014
Investments [Abstract]
Available-for-sale Securities [Table Text Block]	At December 31, 2014, the estimated fair value of short-term and long-term investments classified as available for sale are as follows (in thousands):
			December 31, 2014
			Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	Short-term investments
	Corporate debt securities		$	64,922	$	3	$	(59	)	$	64,866
	Agency securities		—		—		—			—
	Total short-term investments		$	64,922	$	3	$	(59	)	$	64,866
	Long-term investments
	Corporate debt securities		$	14,511	$	1	$	(30	)	$	14,482
	Agency securities		13,649		3		(7		)	13,645
	US Government securities		1,799		2		—			1,801
	Total long-term investments		$	29,959	$	6	$	(37	)	$	29,928
Investments Classified by Contractual Maturity Date [Table Text Block]	The following table summarizes the contractual maturities of the Company's investments as of December 31, 2014 (in thousands):
		31-Dec-14
	One year or less	$	64,866
	One year through three years	29,928
		$	94,794

Fair_Value_Disclosure_Tables

Fair Value Disclosure (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	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
		December 31, 2014		December 31, 2013
	Level 1 Securities:
	Money market funds	$	34,480	$	—
	Level 2 Securities:
	Agency securities	13,645		—
	Corporate debt securities	79,348		—
	US Government securities	1,801		—
	Total cash equivalents and investments	$	129,274	$	—
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]	As of December 31, 2014, the fair value of the convertible senior 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
		December 31, 2014		December 31, 2013
	Convertible senior notes	$	251,973	$	237,066

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Total minimum lease payments	At December 31, 2014, the total future minimum payments under non-cancelable operating and capital leases are as follows (in thousands):
		Operating		Capital Leases
		Leases
	Year Ending:
	2015	$	14,585	$	10,026
	2016	11,557		9,856
	2017	8,666		9,589
	2018	4,681		8,754
	2019	2,041		5,322
	Thereafter	2,565		602
	Total minimum lease payments	$	44,095	44,149
	Less: amount representing interest			(2,947		)
	Present value of future minimum lease payments			41,202
	Less: current portion			(8,905		)
	Non-current portion of capital lease obligations			$	32,297
Total future purchase obligations	At December 31, 2014, the total future minimum payments under these purchase obligations are as follows (in thousands):
	Year Ending:
	2015	$	18,383
	2016	19,238
	2017	18,840
	2018	16,082
	2019	15,312
	Thereafter	11,334
	Total minimum purchase obligations	$	99,189
Total future obligations under build-to-suit leases	At December 31, 2014, the total future rent payments under these build-to-suit leases are as follows (in thousands):
	Year Ending:
	2015	$	4,798
	2016	6,088
	2017	6,224
	2018	6,364
	2019	6,507
	Thereafter	33,127
	Total future rent payments under build-to-suit leases	$	63,108

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 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 at December 31, 2014 and changes during the period are presented in the table below (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	(190	)	17.09
	Forfeited, canceled or expired	(24	)	31.84
	Balances, December 31, 2014	402		$	25.42	4.5	$	7,200
	Options vested and expected to vest at December 31, 2014	399		$	25.39	4.5	$	7,169
	Options vested at December 31, 2014	356		$	24.36	4.1	$	6,746
Assumption used to value options granted during the period	The assumptions used to value options granted during 2013 and 2012 were as follows:
		Year Ended December 31,
		2013		2012
	Dividend yield	—		—
	Annual risk free rate of return	0.8	%	0.8	%
	Expected volatility	47	%	56.5	%
	Expected term (years)	4.2		4.3
Summary of company restricted stock unit activity	A summary of the Company’s restricted stock unit activity for the twelve months ended December 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	1,889		45.34
	Vested	(1,481	)	38.36
	Forfeited	(566	)	41.99
	Awarded and unvested, December 31, 2014	3,704		$	42.17
	Restricted stock units expected to vest, December 31, 2014	3,314
Schedule of restricted award grant activity	The chart below summarizes grant activity during the twelve months ended December 31, 2014 by equity plan (share numbers in thousands):
		Grants in 2014
	2006 Equity Incentive Plan
	Restricted stock units (1)	1,356
	Performance-based restricted stock units (2) (3)	341
	Total grants under 2006 Plan	1,697
	Inducement Awards
	Restricted stock units (4)	96
	Performance-based restricted stock units (4)	96
	Total grants pursuant to Inducement Awards	192
	Total awards granted in 2014	1,889

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of income before provision for income taxes	Income before benefit from/(provision for) income taxes is as follows (in thousands):
		Year Ended December 31,
		2014				2013				2012
	United States	$	(10,317	)		$	12,570			$	40,024
	Foreign	338				350				134
	Total	$	(9,979	)		$	12,920			$	40,158
Components of provision for income taxes	The components of the benefit from/(provision for) income taxes are as follows (in thousands):
		December 31,
		2014				2013				2012
	Federal:
	Current	$	(487	)		$	1,181			$	14,605
	Deferred	(1,381		)		1,870				(316		)
		(1,868		)		3,051				14,289
	State:
	Current	704				1,711				2,383
	Deferred	(1,038		)		(1,234		)		455
		(334		)		477				2,838
	Foreign:
	Current	268				412				118
	Deferred	(185		)		(305		)		(85		)
		83				107				33
	Total income tax expense (benefit):
	Current	485				3,304				17,106
	Deferred	(2,604		)		331				54
		$	(2,119	)		$	3,635			$	17,160
Reconciliation of actual income tax rate and statutory federal income tax rate	The Company’s actual tax expense differed from the statutory federal income tax rate, as follows:
		December 31,
		2014			2013			2012
	Income tax expense at statutory rate	35	%		35	%		35	%
	State income taxes	20.1			(4.5	)		0.9
	Stock-based compensation	2.2			(15.2	)		1.1
	R&D tax credit	14.8			(17.1	)		—
	Non-deductible executive compensation	(29.7	)		20.6			—
	Valuation allowance	(17.2	)		8			5.5
	Other	(4.0	)		1.3			0.2
		21.2	%		28.1	%		42.7	%
Components of net deferred tax assets	The components of the net deferred tax assets as of December 31, 2014 and 2013 are as follows (in thousands):
		December 31,
		2014				2013
	Deferred tax assets:
	Net operating loss carryforwards	$	6,672			$	4,994
	Reserves and other tax benefits	41,549				30,704
	Tax credits	7,211				5,296
	Deferred tax assets	55,432				40,994
	Valuation allowance	(4,850		)		(2,872		)
	Net deferred tax assets	50,582				38,122
	Deferred tax liabilities:
	Depreciation and amortization	(63,478		)		(53,655		)
	Net deferred tax assets / (liabilities)	$	(12,896	)		$	(15,533	)
Reconciliation of beginning and ending amounts of unrecognized income tax benefits	A reconciliation of the beginning and ending amounts of unrecognized income tax benefits is as follows (in thousands):
		2014				2013				2012
	Balance of unrecognized tax benefits at January 1	$	7,035			$	5,445			$	4,364
	Additions for tax positions of prior years	41				22				137
	Additions for tax positions related to current year	1,502				1,811				1,009
	Reductions for tax positions of prior years	(12		)		(243		)		(65		)
	Balance of unrecognized tax benefits at December 31	$	8,566			$	7,035			$	5,445

Convertible_Senior_Notes_Table

Convertible Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2014
Convertible Senior Notes Disclosure [Abstract]
Schedule of long-term debt instruments	The Notes consist of the following (in thousands):
		December 31, 2014			December 31, 2013
	Liability component:
	Principal	$	300,000		$	300,000
	Less: debt discount, net of amortization	(44,782		)	(56,507		)
	Net carrying amount	$	255,218		$	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 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):
		Year Ended			Year Ended
		December 31, 2014			December 31, 2013
	0.25% coupon	$	750		$	469
	Amortization of debt issuance costs	1,179			705
	Amortization of debt discount	11,726			7,002
		$	13,655		$	8,176

Segment_Reporting_Tables

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The Company's segment results for fiscal 2014, 2013 and 2012 were as follows (dollars in thousands):
		Year Ended December 31,
		2014			2013			2012
	Consumer
	Net revenues	$	870,959		$	745,970		$	613,445
	Cost of net revenues	394,265			327,145			263,962
	Gross profit	$	476,694		$	418,825		$	349,483
	Gross profit as a percentage of net revenues	55		%	56		%	57		%
	Enterprise
	Net revenues	$	50,621		$	37,672		$	27,179
	Cost of net revenues	43,456			29,480			22,803
	Gross profit	$	7,165		$	8,192		$	4,376
	Gross profit as a percentage of net revenues	14		%	22		%	16		%
	Corporate
	Net revenues	$	—		$	—		$	—
	Cost of net revenues	14,999			12,968			8,092
	Gross profit	$	(14,999	)	$	(12,968	)	$	(8,092	)
	Consolidated
	Net revenues	$	921,580		$	783,642		$	640,624
	Cost of net revenues	452,720			369,593			294,857
	Gross profit	$	468,860		$	414,049		$	345,767
	Gross profit as a percentage of net revenues	51		%	53		%	54		%

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Data
Quarterly financial data	Summarized quarterly financial data for the years ended December 31, 2014 and 2013 are as follows (in thousands, except per share amounts):
		Year Ended December 31, 2014
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter
	Net revenues	$	137,099		$	159,148		$	142,008		$	483,325
	Gross profit	$	60,756		$	75,813		$	52,282		$	280,009
	Net income/(loss)	$	(34,214	)	$	(27,052	)	$	(46,244	)	$	99,650
	Net income/(loss) per common share:
	Basic	$	(0.89	)	$	(0.70	)	$	(1.20	)	$	2.59
	Diluted	$	(0.89	)	$	(0.70	)	$	(1.20	)	$	2.51
		Year Ended December 31, 2013
		First			Second			Third			Fourth
		Quarter			Quarter			Quarter			Quarter
	Net revenues	$	116,708		$	133,461		$	122,685		$	410,788
	Gross profit	$	54,855		$	61,745		$	51,377		$	246,072
	Net income/(loss)	$	(12,405	)	$	(11,811	)	$	(10,148	)	$	43,649
	Net income/(loss) per common share:
	Basic	$	(0.33	)	$	(0.31	)	$	(0.27	)	$	1.15
	Diluted	$	(0.33	)	$	(0.31	)	$	(0.27	)	$	1.1

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Other (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Additional Information
Product return period	30 days
Advertising expense	$102.20	$87.50	$69.90

Summary_of_Significant_Account4

Summary of Significant Accounting Policies - Concentration Risk (Details) (Accounts Receivable)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Concentration Risk
Number of customers	2	1
Customer One
Concentration Risk
Net accounts receivable held by major customers	25.00%	28.00%
Customer Two
Concentration Risk
Net accounts receivable held by major customers	18.00%

Summary_of_Significant_Account5

Summary of Significant Accounting Policies - Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2014
Equipment | Min
Property, Plant and Equipment
Useful life (in years)	3 years
Equipment | Max
Property, Plant and Equipment
Useful life (in years)	5 years
Rental equipment | Min
Property, Plant and Equipment
Useful life (in years)	5 years
Rental equipment | Max
Property, Plant and Equipment
Useful life (in years)	6 years
Leasehold improvements | Min
Property, Plant and Equipment
Useful life (in years)	3 years
Leasehold improvements | Max
Property, Plant and Equipment
Useful life (in years)	10 years
Capitalized software and website development costs
Property, Plant and Equipment
Amortized useful life (in years)	3 years

Summary_of_Significant_Account6

Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) (Intangible Assets)	12 Months Ended
	Dec. 31, 2014
Min
Intangible Assets
Amortized useful life (in years)	1 year
Max
Intangible Assets
Amortized useful life (in years)	16 years

Summary_of_Significant_Account7

Summary of Significant Accounting Policies - Net Income/(Loss) Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator
Net income/(loss)	$99,650	($46,244)	($27,052)	($34,214)	$43,649	($10,148)	($11,811)	($12,405)	($7,860)	$9,285	$22,998
Denominator for basic net income/(loss) per share
Weighted-average common shares outstanding (in shares)									38,452	37,680	35,826
Dilutive effect of stock options and restricted awards (in shares)									0	1,813	1,606
Denominator for diluted net income per share (in shares)									38,452	39,493	37,432
Net income/(loss) per share:
Basic (in dollars per share)	$2.59	($1.20)	($0.70)	($0.89)	$1.15	($0.27)	($0.31)	($0.33)	($0.20)	$0.25	$0.64
Diluted (in dollars per share)	$2.51	($1.20)	($0.70)	($0.89)	$1.10	($0.27)	($0.31)	($0.33)	($0.20)	$0.24	$0.61
Anti-dilutive stock options and restricted stock units (in shares)									4,205	24	748

Summary_of_Significant_Account8

Summary of Significant Accounting Policies - Segment Reporting (Details)	12 Months Ended
	Dec. 31, 2014
	segments
Segment Reporting Information
Number of reportable segments	2

Intellectual_Property_Prepaid_

Intellectual Property Prepaid Royalties and Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Intellectual Property Prepaid Royalties
Amortization for license agreements	$1,600	$1,500
Future amortization expense, prepaid royalties
2015	1,262
2016	854
2017	799
2018	799
2019	676
Thereafter	3,861
Total	$8,251

Prepaid_Expenses_and_Other_Cur

Prepaid Expenses and Other Current Assets (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid expenses and other current assets
Prepaid service contracts – current portion	$6,754	$5,044
Deferred costs	6,911	4,915
Other prepaid expenses and current assets	11,318	11,301
Total prepaid expenses and other current assets	$24,983	$21,260

Other_Assets_Noncurrent_Detail

Other Assets, Non-current (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Assets, Noncurrent
Other assets	$13,976	$15,412

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property and Equipment
Property and equipment	$453,633	$322,894
Less: Accumulated depreciation and amortization	-211,891	-167,167
Net property and equipment	241,742	155,727
Accumulated depreciation of assets under capital lease	3,060	800
Depreciation and amortization expense	64,885	43,887	29,424
Computer equipment and software
Property and Equipment
Property and equipment	159,370	140,868
Manufacturing equipment
Property and Equipment
Property and equipment	119,495	61,342
Capital lease obligations	44,201	6,800
Capitalized software and website development costs
Property and Equipment
Property and equipment	89,311	66,196
Net property and equipment	35,725	27,799
Depreciation and amortization expense	14,884	10,832	8,352
Buildings under build-to-suit leases
Property and Equipment
Property and equipment	39,307	16,452
Leasehold improvements
Property and Equipment
Property and equipment	20,876	17,702
Rental equipment
Property and Equipment
Property and equipment	14,591	11,943
Furniture and fixtures
Property and Equipment
Property and equipment	$10,683	$8,391

Intangible_Assets_Details

Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Intangible assets, net
Total intangible assets, net	$87,950	$118,621
Intangible asset amortization expense	32,311	29,500	19,739
Developed technology rights
Intangible assets, net
Weighted Average Useful Life	10 years
Intangible assets	104,738	104,553
Less: accumulated amortization	-51,794	-35,653
Total intangible assets, net	52,944	68,900
Developed technology rights | Min
Intangible assets, net
Weighted Average Useful Life	1 year
Developed technology rights | Max
Intangible assets, net
Weighted Average Useful Life	16 years
Customer relationships
Intangible assets, net
Weighted Average Useful Life	5 years
Intangible assets	75,146	74,576
Less: accumulated amortization	-42,086	-27,452
Total intangible assets, net	33,060	47,124
Customer relationships | Min
Intangible assets, net
Weighted Average Useful Life	1 year
Customer relationships | Max
Intangible assets, net
Weighted Average Useful Life	7 years
Licensing agreements and other intangible assets
Intangible assets, net
Weighted Average Useful Life	3 years
Intangible assets	7,202	6,692
Less: accumulated amortization	-5,256	-4,095
Total intangible assets, net	$1,946	$2,597
Licensing agreements and other intangible assets | Min
Intangible assets, net
Weighted Average Useful Life	2 years
Licensing agreements and other intangible assets | Max
Intangible assets, net
Weighted Average Useful Life	5 years

Intangible_Assets_Future_Amort

Intangible Assets - Future Amortization (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Future Amortization Expense
2015	$25,719
2016	18,888
2017	13,699
2018	4,802
2019	3,408
Thereafter	21,434
Total intangible assets, net	$87,950	$118,621

Goodwill_Details

Goodwill (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Goodwill
Goodwill, beginning balance	$397,306	$358,349
Goodwill adjustments	-364	0
Acquisition of business	12,033	38,957
Goodwill allocation	0
Goodwill, ending balance	408,975	397,306
Consumer
Goodwill
Goodwill, beginning balance	0	0
Goodwill adjustments	0	0
Acquisition of business	0	0
Goodwill allocation	372,072
Goodwill, ending balance	372,072	0
Enterprise
Goodwill
Goodwill, beginning balance	0	0
Goodwill adjustments	0	0
Acquisition of business	0	0
Goodwill allocation	36,903
Goodwill, ending balance	36,903	0
Consolidated
Goodwill
Goodwill, beginning balance	397,306	358,349
Goodwill adjustments	-364	0
Acquisition of business	12,033	38,957
Goodwill allocation	-408,975
Goodwill, ending balance	$0	$397,306

Accrued_Liabilities_Details

Accrued Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued Liabilities
Accrued production costs	$32,814	$34,525
Accrued marketing expenses	30,835	26,203
Accrued income and sales tax	18,149	16,465
Accrued compensation	16,337	14,872
Accrued consulting	6,418	4,548
Accrued purchases	11,809	3,723
Capital lease obligations	8,905	1,530
Accrued other	10,218	5,582
Total accrued liabilities	$135,485	$107,448

Other_Liabilities_Noncurrent_D

Other Liabilities, Non-current (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Liabilities, Noncurrent
Financing obligations	$38,529	$16,354
Capital lease obligations	32,297	4,530
Other liabilities	3,352	5,457
Other liabilities	$74,178	$26,341

Investments_Details

Investments (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Available-for-sale Securities
One year or less	$64,866
One year through three years	29,928
Estimated Fair Value	94,794
Short-term
Available-for-sale Securities
Amortized Cost	64,922
Gross Unrealized Gains	3
Gross Unrealized Losses	-59
Estimated Fair Value	64,866
Short-term | Agency securities
Available-for-sale Securities
Amortized Cost	0
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Estimated Fair Value	0
Short-term | Corporate debt securities
Available-for-sale Securities
Amortized Cost	64,922
Gross Unrealized Gains	3
Gross Unrealized Losses	-59
Estimated Fair Value	64,866
Long-term
Available-for-sale Securities
Amortized Cost	29,959
Gross Unrealized Gains	6
Gross Unrealized Losses	-37
Estimated Fair Value	29,928
Long-term | Agency securities
Available-for-sale Securities
Amortized Cost	13,649
Gross Unrealized Gains	3
Gross Unrealized Losses	-7
Estimated Fair Value	13,645
Long-term | US Government securities
Available-for-sale Securities
Amortized Cost	1,799
Gross Unrealized Gains	2
Gross Unrealized Losses	0
Estimated Fair Value	1,801
Long-term | Corporate debt securities
Available-for-sale Securities
Amortized Cost	14,511
Gross Unrealized Gains	1
Gross Unrealized Losses	-30
Estimated Fair Value	$14,482

Fair_Value_Measurement_of_Cash

Fair Value Measurement of Cash Equivalents and Investments (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value
Cash Equivalents and Investments, Fair Value Disclosure	$129,274	$0
Money market funds | Level 1
Fair Value
Investments, Fair Value Disclosure	34,480	0
Agency securities | Level 2
Fair Value
Investments, Fair Value Disclosure	13,645	0
Corporate debt securities | Level 2
Fair Value
Investments, Fair Value Disclosure	79,348	0
US Government securities | Level 2
Fair Value
Investments, Fair Value Disclosure	$1,801	$0

Fair_Value_Measurement_of_Conv

Fair Value Measurement of Convertible Senior Notes (Details) (Estimate of Fair Value Measurement, USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Estimate of Fair Value Measurement
Fair Value
Convertible senior notes	$251,973	$237,066

Acquisitions_Groovebook_Detail

Acquisitions - Groovebook (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition
Goodwill		408,975	$397,306	$358,349
Groovebook
Business Acquisition
Payments to Acquire Businesses, Gross	13,700
Goodwill	12,000
Developed technology rights
Business Acquisition
Amortized useful life (in years)		10 years
Developed technology rights | Groovebook
Business Acquisition
Acquired intangibles	200
Amortized useful life (in years)	1 year
Patents | Groovebook
Business Acquisition
Acquired intangibles	400
Amortized useful life (in years)	2 years
Trade names | Groovebook
Business Acquisition
Acquired intangibles	500
Amortized useful life (in years)	3 years
Customer relationships
Business Acquisition
Amortized useful life (in years)		5 years
Customer relationships | Groovebook
Business Acquisition
Acquired intangibles	$600
Amortized useful life (in years)	2 years

Acquisitions_BorrowLenses_Deta

Acquisitions - BorrowLenses (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Oct. 24, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition
Goodwill		408,975	$397,306	$358,349
BorrowLenses, Inc.
Business Acquisition
Business Combination, Consideration Transferred	36,800
Payments to Acquire Businesses, Net of Cash Acquired	35,700
Assets acquired	13,300
Liabilities assumed	800
Goodwill	17,600
Trade names | BorrowLenses, Inc.
Business Acquisition
Acquired intangibles	1,600
Amortized useful life (in years)	4 years
Developed technology rights
Business Acquisition
Amortized useful life (in years)		10 years
Developed technology rights | BorrowLenses, Inc.
Business Acquisition
Acquired intangibles	1,000
Amortized useful life (in years)	3 years
Customer relationships
Business Acquisition
Amortized useful life (in years)		5 years
Customer relationships | BorrowLenses, Inc.
Business Acquisition
Acquired intangibles	$4,200
Amortized useful life (in years)	4 years

Acquisitions_MyPublisher_Detai

Acquisitions - MyPublisher (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Apr. 29, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition
Goodwill		408,975	$397,306	$358,349
MyPublisher
Business Acquisition
Business Combination, Consideration Transferred	40,200
Payments to Acquire Businesses, Net of Cash Acquired	38,400
Assets acquired	8,200
Liabilities assumed	7,800
Deferred tax liabilities, noncurrent	300
Goodwill	21,100
Customer relationships
Business Acquisition
Amortized useful life (in years)		5 years
Customer relationships | MyPublisher
Business Acquisition
Acquired intangibles	9,500
Amortized useful life (in years)	4 years
Developed technology rights
Business Acquisition
Amortized useful life (in years)		10 years
Developed technology rights | MyPublisher
Business Acquisition
Acquired intangibles	7,800
Amortized useful life (in years)	2 years
Trade names | MyPublisher
Business Acquisition
Acquired intangibles	1,300
Amortized useful life (in years)	2 years
Off-market favorable lease | MyPublisher
Business Acquisition
Acquired intangibles	$100
Amortized useful life (in years)	5 years

Acquisitions_ThisLife_Details

Acquisitions - ThisLife (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 28, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition
Goodwill		408,975	$397,306	$358,349
ThisLife.com
Business Acquisition
Payments to Acquire Businesses, Gross	22,500
Assets acquired	1,000
Liabilities assumed	1,200
Goodwill	7,900
Deferred tax liabilities, noncurrent	4,300
Restricted stock | ThisLife.com
Business Acquisition
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Performance shares | ThisLife.com
Business Acquisition
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Developed technology rights
Business Acquisition
Amortized useful life (in years)		10 years
Developed technology rights | ThisLife.com
Business Acquisition
Amortized useful life (in years)	5 years
Acquired intangibles	14,600
Customer relationships
Business Acquisition
Amortized useful life (in years)		5 years
Customer relationships | ThisLife.com
Business Acquisition
Amortized useful life (in years)	2 years
Acquired intangibles	$200

Acquisitions_Penguin_Digital_D

Acquisitions - Penguin Digital (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 14, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition
Goodwill		408,975	$397,306	$358,349
Penguin Digital
Business Acquisition
Payments to Acquire Businesses, Gross	7,100
Assets acquired	100
Liabilities assumed	200
Goodwill	3,200
Deferred tax liabilities, noncurrent	900
Restricted stock | Penguin Digital
Business Acquisition
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Performance shares | Penguin Digital
Business Acquisition
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Developed technology rights
Business Acquisition
Amortized useful life (in years)		10 years
Developed technology rights | Penguin Digital
Business Acquisition
Acquired intangibles	2,900
Amortized useful life (in years)	3 years
In process research and development | Penguin Digital
Business Acquisition
Acquired intangibles	900
Customer relationships
Business Acquisition
Amortized useful life (in years)		5 years
Customer relationships | Penguin Digital
Business Acquisition
Acquired intangibles	$200
Amortized useful life (in years)	2 years

Acquisitions_Photoccino_Detail

Acquisitions - Photoccino (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	25-May-12	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition
Goodwill		408,975	$397,306	$358,349
Photoccino Ltd
Business Acquisition
Payments to Acquire Businesses, Gross	4,600
Assets acquired	100
Goodwill	700
Deferred tax liabilities, noncurrent	900
Restricted stock | Photoccino Ltd
Business Acquisition
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	3 years
Developed technology rights
Business Acquisition
Amortized useful life (in years)		10 years
Developed technology rights | Photoccino Ltd
Business Acquisition
Amortized useful life (in years)	5 years
Acquired intangibles	3,000
In process research and development | Photoccino Ltd
Business Acquisition
Acquired intangibles	700
Noncompete agreements | Photoccino Ltd
Business Acquisition
Amortized useful life (in years)	2 years
Acquired intangibles	$80

Acquisitions_Kodak_Gallery_Ass

Acquisitions - Kodak Gallery Assets (Details) (Eastman Kodak Gallery Assets, USD $)	2 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	2-May-12	Dec. 31, 2013
Eastman Kodak Gallery Assets
Business Acquisition
Acquisition Price Before Transaction Costs	$23,800
Cash paid to date	19,000
Acquired Finite-Lived Intangibles, Second Payment		4,800
Asset Acquisition Transaction Costs	600
Finite-lived Intangible Assets Acquired	$24,400
Amortized useful life (in years)	4 years

Commitments_and_Contingencies_1

Commitments and Contingencies - Leases (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies
Rent expense	$7,200	$5,800	$4,800
Minimum number of non-cancelable operating leases term for certain production equipment (in years)	4 years
Maximum number of non-cancelable operating leases term for certain production equipment (in years)	5 years
Outstanding obligation under all equipment operating leases	22,100
Year Ending:
Operating Leases, 2014	14,585
Capital Leases, 2014	10,026
Operating Leases, 2015	11,557
Capital Leases, 2015	9,856
Operating Leases, 2016	8,666
Capital Leases, 2016	9,589
Operating Leases, 2017	4,681
Capital Leases, 2017	8,754
Operating Leases, 2018	2,041
Capital Leases, 2018	5,322
Operating Leases, Thereafter	2,565
Capital Leases, Thereafter	602
Operating Leases, Total minimum lease payments	44,095
Capital Leases, Total minimum lease payments	44,149
Capital Leases, Amount representing interest	-2,947
Capital Leases, Present value of future minimum lease payments	41,202
Capital Leases, Current portion	-8,905	-1,530
Capital lease obligations	$32,297	$4,530

Commitments_and_Contingencies_2

Commitments and Contingencies - Purchase Obligations (Details) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Year Ending:
2015	$18,383
2016	19,238
2017	18,840
2018	16,082
2019	15,312
Thereafter	11,334
Total purchase obligations	$99,189

Commitments_and_Contingencies_3

Commitments and Contingencies - Build-to-suit Leases (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
	sqft
Year Ending:
2015	$4,798
2016	6,088
2017	6,224
2018	6,364
2019	6,507
Thereafter	33,127
Total future rent payments under build-to-suit leases	63,108
Buildings under build-to-suit leases
Commitments and Contingencies
Useful life (in years)	30 years
Fort Mill | Buildings under build-to-suit leases
Commitments and Contingencies
Area of Real Estate Property	300,000
Property, Plant and Equipment, Additions		4,850
Increase In Property, Plant And Equipment, Additions	3,121	1,500
Shakopee | Buildings under build-to-suit leases
Commitments and Contingencies
Area of Real Estate Property	217,000
Increase In Property, Plant And Equipment, Additions	13,700	7,000
Tempe | Buildings under build-to-suit leases
Commitments and Contingencies
Area of Real Estate Property	237,000
Increase In Property, Plant And Equipment, Additions	$9,100

Commitments_and_Contingencies_4

Commitments and Contingencies - Credit Facility (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Commitments and Contingencies
Line of Credit Agreement Term	5 years
Line of Credit Facility, Original Borrowing Capacity	$125
Line of Credit Facility Additional Borrowing Capacity	75
Line of Credit Facility, Current Borrowing Capacity	200
Debt Instrument, Debt Default Threshold, Ratio of Total Indebtedness To EBITDA	3.5
Debt Instrument, Debt Default Threshold, Ratio Of Senior Secured Indebtedness To EBITDA	1.6
Debt Instrument, Debt Default Threshold, Ratio Of EBITDA To Interest, Rent Expense, And Long-Term Debt Principal Payments	2.5
Credit Facility origination costs	$0.50
Federal Funds Effective Rate | Max | Revolving Credit Facility | Line of Credit
Commitments and Contingencies
Debt Instrument, Basis Spread on Variable Rate	0.50%
Adjusted LIBO Rate | Revolving Credit Facility | Line of Credit
Commitments and Contingencies
Debt Instrument, Basis Spread on Variable Rate	1.00%
Eurodollar Rate | Min | Base Rate Loan | Line of Credit
Commitments and Contingencies
Debt Instrument, Basis Spread on Variable Rate	0.50%
Eurodollar Rate | Min | Adjusted LIBO Loan | Line of Credit
Commitments and Contingencies
Debt Instrument, Basis Spread on Variable Rate	1.50%
Eurodollar Rate | Max | Base Rate Loan | Line of Credit
Commitments and Contingencies
Debt Instrument, Basis Spread on Variable Rate	1.25%
Eurodollar Rate | Max | Adjusted LIBO Loan | Line of Credit
Commitments and Contingencies
Debt Instrument, Basis Spread on Variable Rate	2.25%

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation
Plan Automatic Replenishment	1,200,000
Fair value of vested awards	56.8	35.9
Unrecognized compensation expense	97.9
Weighted-average period of unrecognized compensation expense (in years)	2 years
2006 Equity Incentive Plan
Share-based Compensation
Options expiration term	10 years
Percentage of shares vesting one year after the options' vesting commencement date (in hundredths)	25.00%
Plan automatic replenishment provision (in hundredths)	3.10%	3.30%	3.50%
Inducement Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	4 years
1999 Stock Plan
Share-based Compensation
Percentage of fair value price options under the plan to be granted, minimum (in hundredths)	85.00%
Percentage of fair value price options could be exercised on grant date, minimum (in hundredths)	100.00%
Percentage of stockholders with applicable exercise price (in hundredths)	10.00%
Percentage of exercise price of options granted to certain stockholders to fair value of shares on grant date (in hundredths)	110.00%
Vesting period of restricted stock, minimum (in years)	4 years
Tiny Prints 2008 Equity Plan
Share-based Compensation
Options expiration term	10 years
Percentage of shares vesting one year after the options' vesting commencement date (in hundredths)	25.00%
Max | 2006 Equity Incentive Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	3 years
Max | Tiny Prints 2008 Equity Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	3 years
Min | 2006 Equity Incentive Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	1 year
Min | Tiny Prints 2008 Equity Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	1 year
Restricted Stock Units (RSUs) | Max | 2006 Equity Incentive Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	4 years
Restricted Stock Units (RSUs) | Min | 2006 Equity Incentive Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	3 years
Performance shares | 2006 Equity Incentive Plan
Share-based Compensation
Vesting period of restricted stock, minimum (in years)	4 years
Non-Qualified Stock Options | 1999 Stock Plan
Share-based Compensation
Options expiration term	10 years
Incentive Stock Options | 1999 Stock Plan
Share-based Compensation
Options expiration term	5 years

Stock_Option_Activity_Details

Stock Option Activity (Details) (Stock Options, USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options
Number of Options Outstanding
Balances (in shares)	616,000
Granted (in shares)	0	2,000	139,000
Exercised (in shares)	-190,000
Forfeited, cancelled or expired (in shares)	-24,000
Balances (in shares)	402,000	616,000
Options vested and expected to vest (in shares)	399,000
Options vested (in shares)	356,000	462,000	1,677,000
Weighted Average Exercise Price
Balances (in dollars per share)	$23.10
Granted (in dollars per share)	$0
Exercised (in dollars per share)	$17.09
Forfeited, cancelled or expired (in dollars per share)	$31.84
Balances (in dollars per share)	$25.42	$23.10
Options vested and expected to vest (in dollars per share)	$25.39
Options vested (in dollars per share)	$24.36
Weighted Average Contractual Term (Years)
Ending balance (in years)	4 years 6 months
Options vested and expected to vest at end of period (in years)	4 years 6 months
Options vested at end of period (in years)	4 years 1 month 6 days
Aggregate Intrinsic Value
Ending balance	$7,200,000
Options vested and expected to vest at end of period	7,169,000
Options vested at end of period	6,746,000
Weighted average grant-date fair value (in dollars per share)	$12.55	$12.93
Total intrinsic value of options exercised	6,100,000	41,500,000	12,300,000
Net cash proceeds from the exercise of stock options	$3,200,000

Valuation_of_Stock_Options_Det

Valuation of Stock Options (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Assumptions used to value options granted [Abstract]
Dividend yield	0.00%	0.00%
Annual risk free rate of return	0.80%	0.80%
Expected volatility	47.00%	56.50%
Expected term (years)	4 years 2 months 12 days	4 years 3 months 18 days

Restricted_Stock_Unit_Activity

Restricted Stock Unit Activity (Details) (Restricted Stock Units (RSUs), USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014
Restricted Stock Units (RSUs)
Numbers of Units Outstanding
Awarded and unvested, beginning of period (in shares)	3,862
Granted (in shares)	1,889
Vested (in shares)	-1,481
Forfeited (in shares)	-566
Awarded and unvested, ending period (in shares)	3,704
Restricted stock units expected to vest, Ending period (in shares)	3,314
Weighted Average Grant Date Fair Value
Awarded and unvested, beginning period (in dollars per share)	$38.59
Granted (in dollars per share)	$45.34
Vested (in dollars per share)	$38.36
Forfeited (in dollars per share)	$41.99
Awarded and unvested, ending period (in dollars per share)	$42.17

Grant_Activity_Details

Grant Activity (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Restricted Stock Units (RSUs)
Share-based Compensation
Granted (in shares)	1,889
2006 Equity Incentive Plan
Share-based Compensation
Granted (in shares)	1,697
2006 Equity Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation
Granted (in shares)	1,356	[1]
2006 Equity Incentive Plan | Performance shares
Share-based Compensation
Granted (in shares)	341	[2],[3]
Inducement Plan
Share-based Compensation
Granted (in shares)	192
Inducement Plan | Restricted Stock Units (RSUs)
Share-based Compensation
Granted (in shares)	96	[4]
Inducement Plan | Performance shares
Share-based Compensation
Granted (in shares)	96	[4]
[1]	Awards issued under the 2006 Plan include restricted stock unit awards granted to new and current employees. Awards issued under this plan typically vest over a three or four year total vesting term.
[2]	Includes performance-based restricted stock units (PBRSUs) issued under the 2006 Equity Incentive Plan to specific employees which are tied to the Company’s 2014 financial performance and which have four year service criteria. 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. As of December 31, 2014, the performance criteria for the fiscal year was met and the associated stock-based compensation has been recognized.
[3]	(3)Also includes the PBRSUs issued to the Chief Executive Officer which are tied to multi-year performance metrics and the Company's stock performance relative to market measures. These PBRSUs also have a three year service criteria. The Company valued the market criteria using a Monte Carlo valuation model and took into consideration the likelihood of the market criteria being achieved. Compensation cost associated with these PBRSUs is recognized on an accelerated attribution model and ultimately based on whether or not satisfaction of the performance and market criteria is probable. As of December 31, 2014, the performance criteria and market criteria appear to be attainable and the Company recognized the associated stock-based compensation.
[4]	(4) Inducement awards are issued to newly hired officers and to certain new employees from acquired companies. During 2014, inducement awards included time-based and performance based awards issued to two newly hired officers and vest over four years.

Income_Taxes_Tables_Details

Income Taxes - Tables (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income before provision for income taxes [Abstract]
United States	($10,317)	$12,570	$40,024
Foreign	338	350	134
Income/(loss) before income taxes	-9,979	12,920	40,158
Federal:
Current	-487	1,181	14,605
Deferred	-1,381	1,870	-316
Total federal income tax expense	-1,868	3,051	14,289
State:
Current	704	1,711	2,383
Deferred	-1,038	-1,234	455
Total state income tax expense	-334	477	2,838
Foreign:
Current	268	412	118
Deferred	-185	-305	-85
Total foreign income tax expense	83	107	33
Total income tax expense (benefit):
Current	485	3,304	17,106
Deferred	-2,604	331	54
Total income tax expense (benefit)	-2,119	3,635	17,160
Reconciliation of actual income tax rate and statutory federal income tax rate [Abstract]
Income tax expense at statutory rate (in hundredths)	35.00%	35.00%	35.00%
State income taxes (in hundredths)	20.10%	-4.50%	0.90%
Stock-based compensation (in hundredths)	2.20%	-15.20%	1.10%
R&D tax credit (in hundredths)	14.80%	-17.10%	0.00%
Non-deductible executive compensation (in hundredths)	-29.70%	20.60%	0.00%
Valuation allowance (in hundredths)	-17.20%	8.00%	5.50%
Other (in hundredths)	-4.00%	1.30%	0.20%
Effective income tax rate (in hundredths)	21.20%	28.10%	42.70%
Deferred tax assets:
Net operating loss carryforwards	6,672	4,994
Reserves and other tax benefits	41,549	30,704
Tax credits	7,211	5,296
Deferred tax assets	55,432	40,994
Valuation allowance	-4,850	-2,872
Net deferred tax assets	50,582	38,122
Deferred tax liabilities:
Depreciation and amortization	-63,478	-53,655
Net deferred tax assets / (liabilities)	-12,896	-15,533
Reconciliation of unrecognized tax benefits [Roll Forward]
Balance of unrecognized tax benefits at January 1	7,035	5,445	4,364
Additions for tax positions of prior years	41	22	137
Additions for tax positions related to current year	1,502	1,811	1,009
Reductions for tax positions of prior years	-12	-243	-65
Balance of unrecognized tax benefits at December 31	$8,566	$7,035	$5,445

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Tax Credit Carryforward
Deferred Tax Assets, Valuation Allowance	$4,850	$2,872
Income Tax Reconciliation, Unrecognized Tax Benefit	4,900
Federal
Tax Credit Carryforward
Operating Loss Carryforwards	50,400
Net operating loss carryforwards associated with windfall tax benefits	33,200
Federal | Research Tax Credit Carryforward
Tax Credit Carryforward
Tax Credit Carryforward, Amount	8,900
Additional paid-in capital when realized associated with windfall tax benefits	7,400
Tax credits carryforward period	20 years
State and Local Jurisdiction | Research Tax Credit Carryforward
Tax Credit Carryforward
Tax Credit Carryforward, Amount	9,200
Additional paid-in capital when realized associated with windfall tax benefits	2,500
California
Tax Credit Carryforward
Operating Loss Carryforwards	45,400
Net operating loss carryforwards associated with windfall tax benefits	35,000
Other Jurisdictions
Tax Credit Carryforward
Operating Loss Carryforwards	16,700
Net operating loss carryforwards associated with windfall tax benefits	$2,700
Arizona | Research Tax Credit Carryforward
Tax Credit Carryforward
Tax credits carryforward period	15 years

Employee_Benefit_Plan_Details

Employee Benefit Plan (Details)	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure
Eligible employee maximum contribution as a percentage of pre-tax compensation (in hundredths)	50.00%

Share_Repurchase_Program_Detai

Share Repurchase Program (Details) (USD $)	0 Months Ended			6 Months Ended	12 Months Ended
In Millions, except Share data, unless otherwise specified	Feb. 09, 2015	Feb. 06, 2014	Oct. 29, 2012	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Stock repurchase program, authorized amount	$300	$100	$60
Stock repurchase program, remaining authorized repurchase amount					11.2
Stock repurchased and retired during period, shares				631,180	1,961,000	70,313
Stock repurchased and retired during period, average amount per share					$45.29	$31.87
Common stock repurchased and retired				$30

Convertible_Senior_Notes_Addit

Convertible Senior Notes - Additional Information (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Convertible Senior Notes
Deferred tax assets, net		($12,896,000)	($15,533,000)
Stock repurchased and retired during period, shares	631,180	1,961,000	70,313
Common stock repurchased and retired	30,000,000
Strike price of warrants			83.18
Proceeds from issuance of warrants		0	43,560,000	0
Convertible Senior Notes Zero Point Two Five Percentage Due May Fifteen Two Thousand And Eighteen | Convertible Senior Notes
Schedule of Convertible Senior Notes
Convertible senior notes, face amount		300,000,000	300,000,000
Contractual interest rate			0.25%
Maturity date			15-May-18
Conversion rate			15.5847
Denomination amount			1,000
Conversion price			$64.17
Number of days out of thirty that common stock price exceeded 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
Debt issuance costs attributable to the equity component			1,700,000
Deferred tax assets, net			600,000
Debt | Designated as Hedging Instrument
Schedule of Convertible Senior Notes
Note hedge, aggregate amount			$63,500,000

Schedule_of_Convertible_Senior

Schedule of Convertible Senior Notes (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument
Net carrying amount	$255,218		$243,493
Convertible Senior Notes | Convertible Senior Notes Zero Point Two Five Percentage Due May Fifteen Two Thousand And Eighteen
Debt Instrument
Principal	300,000		300,000
Less: debt discount, net of amortization	-44,782		-56,507
Net carrying amount	255,218		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 issuance costs in equity.

Schedule_of_Interest_Expense_R

Schedule of Interest Expense Related to Convertible Senior Notes (Details) (Convertible Senior Notes, Convertible Senior Notes Zero Point Two Five Percentage Due May Fifteen Two Thousand And Eighteen, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Convertible Senior Notes | Convertible Senior Notes Zero Point Two Five Percentage Due May Fifteen Two Thousand And Eighteen
Debt Instrument
0.25% coupon	$750	$469
Amortization of debt issuance costs	1,179	705
Amortization of debt discount	11,726	7,002
Interest expense, convertible notes	$13,655	$8,176

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information
Net revenues	$483,325	$142,008	$159,148	$137,099	$410,788	$122,685	$133,461	$116,708	$921,580	$783,642	$640,624
Cost of net revenues									452,720	369,593	294,857
Gross profit	280,009	52,282	75,813	60,756	246,072	51,377	61,745	54,855	468,860	414,049	345,767
Gross profit as percentage of revenue									51.00%	53.00%	54.00%
Consumer
Segment Reporting Information
Net revenues									870,959	745,970	613,445
Cost of net revenues									394,265	327,145	263,962
Gross profit									476,694	418,825	349,483
Gross profit as percentage of revenue									55.00%	56.00%	57.00%
Enterprise
Segment Reporting Information
Net revenues									50,621	37,672	27,179
Cost of net revenues									43,456	29,480	22,803
Gross profit									7,165	8,192	4,376
Gross profit as percentage of revenue									14.00%	22.00%	16.00%
Corporate
Segment Reporting Information
Net revenues									0	0	0
Cost of net revenues									14,999	12,968	8,092
Gross profit									($14,999)	($12,968)	($8,092)

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Groupon
Related Party Transaction
Commissions paid to related party	$3.30
Receivable balance from related party	0.5
Chegg
Related Party Transaction
Receivable balance from related party	0.5
Revenue from Related Parties	$0.50

Quarterly_Financial_Data_Unaud2

Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data
Net revenues	$483,325	$142,008	$159,148	$137,099	$410,788	$122,685	$133,461	$116,708	$921,580	$783,642	$640,624
Gross profit	280,009	52,282	75,813	60,756	246,072	51,377	61,745	54,855	468,860	414,049	345,767
Net income/(loss)	$99,650	($46,244)	($27,052)	($34,214)	$43,649	($10,148)	($11,811)	($12,405)	($7,860)	$9,285	$22,998
Net income/(loss) per common share:
Basic (in dollars per share)	$2.59	($1.20)	($0.70)	($0.89)	$1.15	($0.27)	($0.31)	($0.33)	($0.20)	$0.25	$0.64
Diluted (in dollars per share)	$2.51	($1.20)	($0.70)	($0.89)	$1.10	($0.27)	($0.31)	($0.33)	($0.20)	$0.24	$0.61

Subsequent_Event_Details

Subsequent Event (Details) (USD $)	0 Months Ended
In Millions, unless otherwise specified	Feb. 09, 2015	Feb. 06, 2014	Oct. 29, 2012
Subsequent Events [Abstract]
Stock repurchase program, authorized amount	$300	$100	$60

Schedule_II_Valuation_and_Qual1

Schedule II Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts Receivable
Valuation Allowances and Reserves
Balance at Beginning of Period	$12	$231	$334
Charged to Costs and Expenses	7	-140	303
Charged to Other Accounts	0	0	0
Deductions	-18	-79	-406
Balance at End of Period	1	12	231
Valuation Allowance of Deferred Tax Assets
Valuation Allowances and Reserves
Balance at Beginning of Period	2,872	2,203	0
Charged to Costs and Expenses	1,978	1,049	2,203
Charged to Other Accounts	0	0	0
Deductions	0	-380	0
Balance at End of Period	$4,850	$2,872	$2,203