The Company and Summary of Significant Accounting Policies	9 Months Ended
Sep. 30, 2016
Accounting Policies [Abstract]
The Company and Summary of Significant Accounting Policies	The Company and Summary of Significant Accounting Policies Shutterfly, Inc., (the “Company” or “Shutterfly”) was incorporated in the state of Delaware in 1999 and began its services in December 1999. The Company is the leading manufacturer and digital retailer of high-quality personalized products and services offered through a family of lifestyle brands. The Company provides customers a full range of products and services to organize and archive digital images; share pictures; order prints and create an assortment of personalized items such as photo books, greeting cards and stationery and calendars. Shutterfly also operates a premier online marketplace for high-quality photographic and video equipment rentals. The Company provides Enterprise services: printing and shipping of direct marketing and other variable data print products and formats. The Company's Enterprise brand is called Shutterfly Business Solutions ("SBS") and is referred to as such in this document. The Company is headquartered in Redwood City, California. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and, accordingly, do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The accompanying unaudited condensed consolidated financial statements include the accounts of Shutterfly, Inc. and its wholly owned subsidiaries. In the opinion of management, all adjustments, consisting primarily of normal recurring accruals, considered necessary for a fair statement of the Company’s results of operations for the interim periods reported and of its financial condition as of the date of the interim balance sheet have been included. Operating results for the three and nine months ended September 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016, or for any other period. The December 31, 2015 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2015 included in the Company’s Annual Report on Form 10-K. Recent Accounting Pronouncements 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 the annual period ending December 15, 2016, and for annual periods and interim periods thereafter. The adoption of this standard is not expected to have a material impact on the Company's financial statements. In April 2015, the FASB issued new guidance related to presentation of debt issuance costs. The new standard requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. The Company adopted this guidance beginning January 1, 2016. This guidance requires retrospective application to all prior periods presented. The effect of this change was to reduce the previously reported amounts within the accompanying condensed consolidated balance sheets as of December 31, 2015 for prepaid expenses and other current assets, other assets, and convertible senior notes, net by $1.3 million, $1.9 million, and $3.3 million, respectively. Adoption of this guidance did not affect the Company's condensed consolidated statements of operations and condensed consolidated statements of cash flows. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). The updated guidance changes how companies account for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The amendments in this update are effective for reporting periods beginning after December 15, 2016. The Company plans to adopt this pronouncement beginning January 1, 2017. In 2014, the FASB issued new accounting guidance related to revenue recognition. This new standard will replace all current GAAP guidance on this topic and eliminate all industry-specific guidance. The new revenue recognition guidance 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 can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. In 2015, the FASB issued guidance to defer the effective date to fiscal years beginning after December 15, 2017 with early adoption for fiscal years. In 2016, the FASB issued additional guidance to clarify the implementation guidance. Presently, the Company is not yet in a position to assess the application date. The Company has not yet completed its final review of the impact of this guidance, although the Company currently does not anticipate a material impact on its revenue recognition practices. The Company will continue to review variable consideration, potential disclosures, and the method of adoption to complete the evaluation of the impact on the consolidated financial statements. In addition, the Company will continue to monitor additional changes, modifications, clarifications or interpretations being undertaken by the FASB, which may impact its current conclusions. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new guidance requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is evaluating the impact, if any, of adopting this new accounting guidance on its financial statements. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies the classification of certain cash receipts and cash payments in the statement of cash flows, including debt prepayment or extinguishment costs, settlement of contingent consideration arising from a business combination, insurance settlement proceeds, and distributions from certain equity method investees. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. The Company is evaluating the impact of adopting this new accounting guidance on the consolidated financial statements. Out-of-period Correction In the third quarter of 2016, the Company recorded an out-of-period correction to increase revenue $0.8 million relating to prepaid plan breakage and $0.5 million relating to other errors. These amounts were incorrectly deferred and should have been recorded in prior periods. Management believes this correction is not material to the current period financial statements or any previously issued financial statements.

The Company and Summary of Significant Accounting Policies

Shutterfly, Inc., (the “Company” or “Shutterfly”) was incorporated in the state of Delaware in 1999 and began its services in December 1999. The Company is the leading manufacturer and digital retailer of high-quality personalized products and services offered through a family of lifestyle brands. The Company provides customers a full range of products and services to organize and archive digital images; share pictures; order prints and create an assortment of personalized items such as photo books, greeting cards and stationery and calendars. Shutterfly also operates a premier online marketplace for high-quality photographic and video equipment rentals. The Company provides Enterprise services: printing and shipping of direct marketing and other variable data print products and formats. The Company's Enterprise brand is called Shutterfly Business Solutions ("SBS") and is referred to as such in this document. The Company is headquartered in Redwood City, California.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information and, accordingly, do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. The accompanying unaudited condensed consolidated financial statements include the accounts of Shutterfly, Inc. and its wholly owned subsidiaries. In the opinion of management, all adjustments, consisting primarily of normal recurring accruals, considered necessary for a fair statement of the Company’s results of operations for the interim periods reported and of its financial condition as of the date of the interim balance sheet have been included. Operating results for the three and nine months ended September 30, 2016 are not necessarily indicative of the results that may be expected for the year ending December 31, 2016, or for any other period.

The December 31, 2015 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2015 included in the Company’s Annual Report on Form 10-K.

Recent Accounting Pronouncements

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 the annual period ending December 15, 2016, and for annual periods and interim periods thereafter. The adoption of this standard is not expected to have a material impact on the Company's financial statements.

In April 2015, the FASB issued new guidance related to presentation of debt issuance costs. The new standard requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. The Company adopted this guidance beginning January 1, 2016. This guidance requires retrospective application to all prior periods presented. The effect of this change was to reduce the previously reported amounts within the accompanying condensed consolidated balance sheets as of December 31, 2015 for prepaid expenses and other current assets, other assets, and convertible senior notes, net by $1.3 million, $1.9 million, and $3.3 million, respectively. Adoption of this guidance did not affect the Company's condensed consolidated statements of operations and condensed consolidated statements of cash flows.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). The updated guidance changes how companies account for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The amendments in this update are effective for reporting periods beginning after December 15, 2016. The Company plans to adopt this pronouncement beginning January 1, 2017.

In 2014, the FASB issued new accounting guidance related to revenue recognition. This new standard will replace all current GAAP guidance on this topic and eliminate all industry-specific guidance. The new revenue recognition guidance 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 can be applied either retrospectively to each period presented or as a cumulative-effect adjustment as of the date of adoption. In 2015, the FASB issued guidance to defer the effective date to fiscal years beginning after December 15, 2017 with early adoption for fiscal years. In 2016, the FASB issued additional guidance to clarify the implementation guidance. Presently, the Company is not yet in a position to assess the application date. The Company has not yet completed its final review of the impact of this guidance, although the Company currently does not anticipate a material impact on its revenue recognition practices. The Company will continue to review variable consideration, potential disclosures, and the method of adoption to complete the evaluation of the impact on the consolidated financial statements. In addition, the Company will continue to monitor additional changes, modifications, clarifications or interpretations being undertaken by the FASB, which may impact its current conclusions.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new guidance requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company is evaluating the impact, if any, of adopting this new accounting guidance on its financial statements.

In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. The new guidance clarifies the classification of certain cash receipts and cash payments in the statement of cash flows, including debt prepayment or extinguishment costs, settlement of contingent consideration arising from a business combination, insurance settlement proceeds, and distributions from certain equity method investees. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. The Company is evaluating the impact of adopting this new accounting guidance on the consolidated financial statements.

Out-of-period Correction

In the third quarter of 2016, the Company recorded an out-of-period correction to increase revenue $0.8 million relating to prepaid plan breakage and $0.5 million relating to other errors. These amounts were incorrectly deferred and should have been recorded in prior periods. Management believes this correction is not material to the current period financial statements or any previously issued financial statements.