Organization	6 Months Ended
Jun. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Stock Building Supply Holdings, Inc., formerly known as Saturn Acquisition Holdings, LLC (“Saturn”), was organized as a limited liability company on April 16, 2009, under the laws of the State of Delaware and had no principal operations prior to the acquisition of Stock Building Supply Holdings, LLC and Subsidiaries (“SBS”) on May 5, 2009 (“Acquisition Date”). Prior to May 5, 2009, SBS was an indirect wholly-owned subsidiary of Wolseley plc (“Wolseley”). On May 5, 2009, Wolseley entered into a transaction with Gores Building Holdings, LLC (“Gores”), whereby Gores contributed $1 for a 51% voting interest in Saturn and Wolseley transferred 100% of the membership interest in SBS to Saturn in exchange for $1 and a 49% voting interest in Saturn pursuant to the terms of the Restructuring and Investment Agreement dated May 5, 2009. On November 16, 2011, Saturn purchased all of Wolseley’s stockholder interests, which included 11,135,495 Class A Voting Common shares and 4,900 Class A Junior Preferred shares, for cash consideration of $25,000. The purchase was financed by $15,000 in borrowings under the revolving line of credit, $5,000 of cash and $5,000 of cash contributed by Gores (Note 12). Stock Building Supply Holdings, Inc. and Subsidiaries (the “Company,” “we,” “us,” “our,” and “management”) distributes lumber and building materials to new construction and repair and remodel contractors. Additionally, we provide solution-based services to our customers, including design, production specification, and installation management services. On May 2, 2013, the Company filed a Certificate of Conversion with the Secretary of State of the State of Delaware to effect a conversion from a Delaware limited liability company to a Delaware corporation and change the name of the Company to Stock Building Supply Holdings, Inc. In connection with the conversion to a corporation, each one share of Class A common stock, Class B common stock, Class A Junior Preferred stock and Class C Preferred stock converted into one share of the same class of the converted entity. Each share of Class B Senior Preferred stock converted into 1.02966258 shares of the same class of the converted entity (with the additional shares representing the accumulated dividends thereon to the date of the conversion). On August 14, 2013, the Company completed its initial public offering ("IPO") (Note 16). Due to the seasonal nature of our industry, sales are usually lower in the first and fourth quarters than in the second and third quarters.

Organization

6 Months Ended

Jun. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Stock Building Supply Holdings, Inc., formerly known as Saturn Acquisition Holdings, LLC (“Saturn”), was organized as a limited liability company on April 16, 2009, under the laws of the State of Delaware and had no principal operations prior to the acquisition of Stock Building Supply Holdings, LLC and Subsidiaries (“SBS”) on May 5, 2009 (“Acquisition Date”). Prior to May 5, 2009, SBS was an indirect wholly-owned subsidiary of Wolseley plc (“Wolseley”). On May 5, 2009, Wolseley entered into a transaction with Gores Building Holdings, LLC (“Gores”), whereby Gores contributed $1 for a 51% voting interest in Saturn and Wolseley transferred 100% of the membership interest in SBS to Saturn in exchange for $1 and a 49% voting interest in Saturn pursuant to the terms of the Restructuring and Investment Agreement dated May 5, 2009.

On November 16, 2011, Saturn purchased all of Wolseley’s stockholder interests, which included 11,135,495 Class A Voting Common shares and 4,900 Class A Junior Preferred shares, for cash consideration of $25,000. The purchase was financed by $15,000 in borrowings under the revolving line of credit, $5,000 of cash and $5,000 of cash contributed by Gores (Note 12).

Stock Building Supply Holdings, Inc. and Subsidiaries (the “Company,” “we,” “us,” “our,” and “management”) distributes lumber and building materials to new construction and repair and remodel contractors. Additionally, we provide solution-based services to our customers, including design, production specification, and installation management services.

On May 2, 2013, the Company filed a Certificate of Conversion with the Secretary of State of the State of Delaware to effect a conversion from a Delaware limited liability company to a Delaware corporation and change the name of the Company to Stock Building Supply Holdings, Inc. In connection with the conversion to a corporation, each one share of Class A common stock, Class B common stock, Class A Junior Preferred stock and Class C Preferred stock converted into one share of the same class of the converted entity. Each share of Class B Senior Preferred stock converted into 1.02966258 shares of the same class of the converted entity (with the additional shares representing the accumulated dividends thereon to the date of the conversion).

On August 14, 2013, the Company completed its initial public offering ("IPO") (Note 16).

Due to the seasonal nature of our industry, sales are usually lower in the first and fourth quarters than in the second and third quarters.