BMC Stock (BMCH) 10-Q/A 4 Oct 13 2013 Q2 Quarterly report (amended) Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2013	Sep. 05, 2013
Document And Entity Information [Abstract]
Entity Registrant Name	Stock Building Supply Holdings, Inc.
Entity Central Index Key	1574815
Document Type	10-Q
Document Period End Date	30-Jun-13
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Amendment Flag	FALSE
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		26,107,231

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets [Abstract]
Cash and cash equivalents	$9,057	$2,691
Restricted assets	2,122	3,821
Accounts receivable, net	121,653	90,297
Inventories, net	101,506	73,918
Costs in excess of billings on uncompleted contracts	7,080	5,176
Assets held for sale	3,385	6,198
Prepaid expenses and other current assets	8,644	8,682
Deferred income taxes	5,292	3,562
Total Current Assets	258,739	194,345
Property and equipment, net of accumulated depreciation	53,594	55,076
Intangible assets, net of accumulated amortization	25,916	25,865
Goodwill	7,186	6,511
Restricted assets	2,217	2,202
Other assets	2,298	2,013
Total assets	349,950	286,012
Current liabilities [Abstract]
Accounts payable	89,118	74,231
Accrued expenses and other liabilities	29,380	25,277
Revolving line of credit	0	72,218
Income taxes payable	4,492	2,939
Current portion of restructuring reserve	1,550	1,513
Current portion of capital lease obligation	1,436	1,329
Billings in excess of costs on uncompleted contracts	1,757	1,239
Total current liabilities	127,733	178,746
Revolving line of credit	117,699	0
Deferred income taxes	16,124	16,983
Other long-term liabilities	14,167	14,642
Total liabilities	275,723	210,371
Commitments and contingencies (Note 11)
Stockholders' Equity [Abstract]
Additional paid-in capital	45,726	46,534
Retained deficit	-14,594	-12,515
Total stockholders' equity	31,277	34,164
Total liabilities and stockholders' equity	349,950	286,012
Redeemable Class A Junior Preferred Stock [Member]
Temporary Equity [Abstract]
Preferred stock	0	0
Redeemable Class B Senior Preferred Stock [Member]
Temporary Equity [Abstract]
Preferred stock	37,950	36,477
Convertible Class C Preferred Stock [Member]
Temporary Equity [Abstract]
Preferred stock	5,000	5,000
Class A Common Stock [Member]
Stockholders' Equity [Abstract]
Common stock	116	116
Class B Common Stock [Member]
Stockholders' Equity [Abstract]
Common stock	$29	$29

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013	Dec. 31, 2012
	Class A Common Stock [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]	Class B Common Stock [Member]
Common Stock:
Common stock, par value	$0.01	$0.01	$0.01	$0.01
Common stock, shares authorized	22,725,500	22,725,500	3,246,500	3,246,500
Common stock, shares, issued	22,725,500	22,725,500	2,870,712	2,870,712
Common stock, shares, outstanding	11,590,005	11,590,005	2,870,712	2,870,712

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Net sales	$314,653	$246,492	$563,379	$434,431
Cost of goods sold	243,143	191,438	438,079	335,946
Gross profit	71,510	55,054	125,300	98,485
Selling, general and administrative expenses	65,411	54,771	122,213	107,605
Depreciation expense	1,621	2,032	3,260	4,099
Amortization expense	562	364	1,109	729
Restructuring expense	39	-23	99	21
Total operating expenses	67,633	57,144	126,681	112,454
Income (loss) from operations	3,877	-2,090	-1,381	-13,969
Other income (expenses)
Interest expense	-1,233	-1,085	-2,258	-2,048
Other income (expense), net	206	-227	396	-101
Income (loss) from continuing operations before income taxes	2,850	-3,402	-3,243	-16,118
Income tax benefit (expense)	-966	1,293	913	5,556
Income (loss) from continuing operations	1,884	-2,109	-2,330	-10,562
Income (loss) from discontinued operations, net of tax benefit (provision) of ($74), $64, ($183) and $143, respectively	94	-128	251	-241
Net income (loss)	1,978	-2,237	-2,079	-10,803
Redeemable Class B Senior Preferred stock deemed dividend	-744	-1,122	-1,473	-2,222
Accretion of beneficial conversion feature on Convertible Class C Preferred stock	0	0	0	-5,000
Income (loss) available to common stockholders	$1,234	($3,359)	($3,552)	($18,025)
Weighted average common shares outstanding
Weighted average common shares outstanding, basic (in shares)	13,750,400	13,178,143	13,637,462	12,937,474
Weighted average common shares outstanding, diluted (in shares)	18,887,677	13,178,143	13,637,462	12,937,474
Basic and diluted income (loss) per share
Income (loss) from continuing operations (in dollars per share)	$0.06	($0.24)	($0.28)	($1.37)
Income (loss) from discontinued operations (in dollars per share)	$0.01	($0.01)	$0.02	($0.02)
Net income (loss) per share (in dollars per share)	$0.07	($0.25)	($0.26)	($1.39)

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Discontinued operations, income tax benefit (provision)	($74)	$64	($183)	$143

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities
Net loss	($2,079)	($10,803)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation expense	4,920	5,421
Amortization of intangible assets	1,109	729
Amortization of debt issuance costs	323	457
Change in deferred income taxes	-2,589	-1,362
Noncash stock compensation expense	264	680
Gain on sale of property, equipment and real estate held for sale	-11	-443
Bad debt expense	795	1,204
Change in assets and liabilities
Accounts receivable	-31,095	-33,437
Inventories, net	-27,061	-24,240
Accounts payable	15,448	30,685
Other current assets and liabilities	1,842	11,890
Other long-term liabilities	-548	-26
Net cash used in operating activities	-38,682	-19,245
Cash flows from investing activities
Restricted assets	1,684	3,821
Purchase of business	-2,373	0
Proceeds from sale of property, equipment and real estate held for sale	2,539	795
Purchases of property and equipment	-1,335	-1,702
Net cash provided by investing activities	515	2,914
Cash flows from financing activities
Proceeds from revolving line of credit	618,455	475,005
Repayments of proceeds from revolving line of credit	-572,974	-454,492
Other financing activities	-948	-1,067
Net cash provided by financing activities	44,533	19,446
Net increase in cash and cash equivalents	6,366	3,115
Cash and cash equivalents
Cash and cash equivalents, beginning of period	2,691	4,957
Cash and cash equivalents, end of period	$9,057	$8,072

Organization

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.

Restatement_of_previously_issu

Restatement of previously issued consolidated financial statements	6 Months Ended
	Jun. 30, 2013
Accounting Changes and Error Corrections [Abstract]
Restatement of previously issued consolidated financial statements	Restatement of previously issued consolidated financial statements
	In connection with the IPO, the Company restated its previously issued consolidated financial statements and related footnotes as of December 31, 2012 as set forth in these consolidated financial statements. The Company updated the methodology utilized in the January 1, 2012 valuation of its Class A and Class B Common stock, as well as placed additional weighting on value indicated by the purchase by the Company of Wolseley’s stockholder interests in November 2011 (Note 1). The updated valuation of the Company’s Class A and Class B Common stock resulted in the following: (i) correction of compensation expense related to a modification of the exercise price of the Company’s outstanding stock options, the issuance of new stock options and the purchase by management of shares of Class B Common stock in 2012 and (ii) recognition of a beneficial conversion feature (“BCF”) for the Convertible Class C Preferred stock.
	The Company recorded additional compensation expense related to the modification of the exercise price of outstanding stock options, the issuance of new options and the purchase of shares of Class B Common stock by management. The Company determined that the increase in the estimated fair value of the Class B Common stock increased the Company’s total compensation expense recognized as a result of these transactions. Accordingly, in the restated consolidated financial statements as of December 31, 2012, the Company decreased income tax payable by $177 and increased additional paid-in capital by $506.

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation
	The condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) that permit reduced disclosure for interim periods. The condensed consolidated balance sheet as of December 31, 2012 was derived from audited financial statements, but does not include all necessary disclosures required by accounting principles generally accepted in the United States of America (“GAAP”). The unaudited condensed consolidated financial statements include all accounts of the Company and its subsidiaries and, in the opinion of management, include all recurring adjustments and normal accruals necessary for a fair statement of the Company’s financial position, results of operations and cash flows for the dates and periods presented. These unaudited financial statements should be read in conjunction with the Company’s most recent audited annual financial statements. Results for interim periods are not necessarily indicative of the results to be expected during the remainder of the current year or for any future period. All material intercompany accounts and transactions have been eliminated in consolidation.
	Comprehensive income (loss)
	Comprehensive income (loss) is equal to the net income (loss) for all periods presented.
	Recently issued accounting pronouncements
	There were no new accounting pronouncements or changes to existing guidance that have significant impact on the Company.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2013
Business Combinations [Abstract]
Acquisitions	Acquisitions
	For all acquisitions, the Company allocates the purchase price to the estimated fair values of the assets acquired and liabilities assumed as of the date of the acquisition. The market approach, which indicates value based on available market pricing for comparable assets, is utilized to estimate the fair value of inventory, property and equipment. The income approach, which indicates value based on the present value of future cash flows, is primarily used to value intangible assets. The cost approach, which estimates values by determining the current cost of replacing an asset with another of equivalent utility, is used, as appropriate, for certain assets for which the market and income approaches could not be applied due to the nature of the asset.
	Chesapeake Structural Systems
	On April 8, 2013, Commonwealth Acquisition Holdings, LLC, a wholly-owned subsidiary of the Company, purchased certain assets and assumed certain liabilities of Chesapeake Structural Systems, Inc., Creative Wood Products, LLC and Chestruc, LLC (collectively “Chesapeake”) for an adjusted purchase price of $2,623. This amount includes an initial holdback amount of $250 due to the sellers on April 8, 2014. The holdback amount may be reduced under certain circumstances, including the Company’s inability to collect upon acquired accounts receivable. The acquisition provides the Company with component manufacturing capability to serve customers in the Central and Northern Virginia markets. The Company incurred transaction costs of $147 and $151 during the three months and six months ended June 30, 2013, respectively, which are included in selling, general and administrative expenses on the consolidated statements of operations. Net sales of Chesapeake for the period from April 8, 2013 through June 30, 2013 were $2,420. The impact of this acquisition on our operating results was not considered material for the reporting of pro forma financial information.
	Intangible assets of $1,160 acquired from Chesapeake consist of customer relationships and have an amortization period of 13 years.
	Goodwill of $675 arising from the acquisition consists of expected synergies and cost savings from excess purchase price over identifiable intangible net assets, as well as intangible assets that do not qualify for separate recognition, such as assembled workforce. All of the goodwill from this transaction is expected to be deductible for income tax purposes.

Discontinued_operations

Discontinued operations	6 Months Ended
	Jun. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]
Discontinued operations	Discontinued operations
	During 2012, the Company ceased operations in certain geographic markets due to declines in residential home building throughout the U.S. and other strategic reasons. The Company will have no further significant continuing involvement in the sold operations and exited geographic markets. The cessation of operations in these markets has been treated as discontinued operations as the markets had distinguishable cash flows and operations that have been eliminated from ongoing operations.
	The operating results of the discontinued operations for the three and six months ended June 30, 2013 and 2012 are as follows:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013			2012
	Net sales	$	—		$	311		$	—		$	584
	Restructuring charges	(9		)	1			(18		)	39
	Gain (loss) before income taxes	168			(192		)	434			(384		)
	Income tax benefit (expense)	(74		)	64			(183		)	143
	Net income (loss)	94			(128		)	251			(241		)
	The assets and liabilities of discontinued operations reflected on the consolidated balance sheets at June 30, 2013 and December 31, 2012 are as follows:
		June 30,			December 31,
		2013			2012
	Inventories, net	$	—		$	20
	Real estate held for sale	700			700
	Prepaid expenses and other current assets	34			35
	Current assets of discontinued operations	734			755
	Property and equipment, net of accumulated depreciation	—			28
	Noncurrent assets of discontinued operations	—			28
	Accounts payable	2			2
	Accrued expenses and other liabilities	129			167
	Restructuring reserve	285			277
	Current liabilities of discontinued operations	416			446
	Long-term restructuring reserve	239			384
	Other long-term liabilities	—			4
	Noncurrent liabilities of discontinued operations	$	239		$	388

Restructuring_costs

Restructuring costs	6 Months Ended
	Jun. 30, 2013
Restructuring and Related Activities [Abstract]
Restructuring costs	Restructuring costs
	In addition to discontinuing operations in certain markets, the Company has instituted store closures and reductions in headcount in continuing markets (the “Restructurings”) in an effort to: (i) strengthen the Company’s competitive position; (ii) reduce costs; and (iii) improve operating margins within existing markets that management believes have favorable long-term growth demographics.
	No additional costs, other than interest accretion, are expected to be incurred related to the Restructurings.
	The following table summarizes the restructuring expenses incurred in connection with the Restructurings and the remaining reserves as of June 30, 2013 and 2012:
		Work force			Store			Total
		reductions			closures
	Restructuring reserves, December 31, 2012	$	353		$	4,772		$	5,125
	Restructuring charges incurred	—			117			117
	Cash payments	(75		)	(797		)	(872		)
	Restructuring reserves, June 30, 2013	$	278		$	4,092		$	4,370
		Work force			Store			Total
		reductions			closures
	Restructuring reserves, December 31, 2011	$	65		$	3,935		$	4,000
	Restructuring gain recognized	—			(18		)	(18		)
	Cash payments	(65		)	(900		)	(965		)
	Restructuring reserves, June 30, 2012	$	—		$	3,017		$	3,017
	The remaining accrual for work force reduction of $278 is expected to be fully paid by December 2014. The remaining accrual for store closures of $4,092 is expected to be fully paid by January 2017 as the related leases expire.
	The restructuring reserve at June 30, 2013 consists of a current portion of $1,550 and a long-term portion of $2,820, which is included in other long-term liabilities on the consolidated balance sheets.

Goodwill

Goodwill	6 Months Ended
	Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Goodwill
	The following table shows changes in goodwill for the six months ended June 30, 2013. The goodwill recognized related to the acquisition of Chesapeake is recorded in the geographic divisions reportable segment (Note 14):
	December 31, 2012	$	6,511
	Acquisition of Chesapeake (Note 4)	675
	June 30, 2013	$	7,186

Secured_Credit_Agreement

Secured Credit Agreement	6 Months Ended
	Jun. 30, 2013
Debt Disclosure [Abstract]
Secured Credit Agreement	Secured Credit Agreement
	On June 30, 2009, the Company entered into a Secured Credit Agreement (the “Credit Agreement”) with Wells Fargo Capital Finance (“WFCF”), which includes a revolving line of credit (the “Revolver”). The Revolver was amended during 2012 and 2013 for changes in financial covenants, maximum availability, maturity date and interest rate. The following is a summary of the significant terms of the Revolver:
	Maturity	31-Dec-16
	Interest/Usage Rate	Company’s option of Base Rate(a) plus a Base Rate Margin (ranges from 0.50%–1.00% based on Revolver availability) or LIBOR plus a LIBOR Rate Margin (ranges from 1.50%–2.00% based on Revolver availability)
	Maximum Availability	Lesser of $150,000 or the borrowing base(b)
	Periodic Principal Payments	None
	(a)	Base Rate is the higher of (i) the Federal Funds Rate plus 0.5% or (ii) the prime rate.
	(b)	The Revolver’s borrowing base is calculated as the sum of (i) 85% of the Company’s eligible accounts receivable plus (ii) the lesser of 90% of the eligible credit card receivables and $5,000, plus (iii) the lesser of $125,000, 65% of the eligible inventory or 85% of the net liquidation value of eligible inventory as defined in the Credit Agreement minus (iv) reserves from time to time set by the administrative agent. The eligible accounts receivable and inventories are further adjusted as specified in the agreement. The Company’s borrowing base can also be increased pursuant to certain terms outlined in the Credit Agreement.
	The Credit Agreement provides that the Company can use the Revolver availability to issue letters of credit. The fees on any outstanding letters of credit issued under the Revolver include a participation fee equal to the LIBOR Rate Margin. The fee on the unused portion of the Revolver is 0.375% if the average daily usage is $75,000 or below, and 0.25% if the average daily usage is above $75,000. The Revolver includes a financial covenant that requires the Company to maintain a minimum Fixed Charge Coverage Ratio of 1.00:1.00 as defined by the Credit Agreement. The Fixed Charge Coverage Ratio is only applicable if adjusted liquidity is less than $15,000, and remains in effect until the date on which adjusted liquidity has been greater than or equal to $15,000 for a period of 30 consecutive days. Adjusted liquidity is defined as the sum of (i) availability under the Revolver, (ii) qualified cash and (iii) for all periods from June 13, 2013 through the earlier of the date of consummation of a qualified initial public offering by the Company and August 31, 2013, up to $15,000 of suppressed availability. Suppressed availability means, as of any date of determination, the difference between the amount of the borrowing base as of such date and the Revolver usage as of such date, provided that if the result is a negative number, then suppressed availability shall be $0. The Company has incurred operating losses and has used cash for operating activities for the six months ended June 30, 2013 and 2012. While there can be no assurances, based upon the Company’s forecast, the Company does not expect the covenants to become applicable during the year ended December 31, 2013.
	The Company had outstanding borrowings of $117,699 and $72,218 with net availability of $22,301 and $31,344 as of June 30, 2013 and December 31, 2012, respectively. The interest rate on outstanding LIBOR Rate borrowings of $111,000 was 2.3% and the interest rate on outstanding Base Rate borrowings of $6,699 was 4.25% as of June 30, 2013. The interest rate on outstanding LIBOR Rate borrowings of $65,000 ranged from 3.1%-3.3% and the interest rate on outstanding Base Rate borrowings of $7,218 was 5.0% as of December 31, 2012. The Company had $10,000 and $7,550 in letters of credit outstanding under the Credit Agreement as of June 30, 2013 and December 31, 2012, respectively. The Revolver is collateralized by substantially all assets of the Company. The carrying value of the Revolver at June 30, 2013 and December 31, 2012 approximates fair value as the Revolver contains a variable interest rate. As such, the fair value of the Revolver was classified as a Level 2 measurement in accordance with ASC 820.
	The Revolver was reclassified to a long-term liability as of June 30, 2013 as the Company was no longer required to maintain a lockbox sweep arrangement with Wells Fargo Capital Finance, due to net availability exceeding a minimum threshold defined in the Credit Agreement.

Related_party_transactions

Related party transactions	6 Months Ended
	Jun. 30, 2013
Related Party Transactions [Abstract]
Related party transactions	Related party transactions
	On February 22, 2010, the Company entered into a Software, Services, License and Maintenance Services Agreement with United Road Services Inc. and its subsidiary Vehix Transvision, LLC (collectively “URS”) for the development, implementation, maintenance and support of customized software related to our Stock Logistics Solutions capability. The agreement with URS was subsequently amended and restated on March 3, 2013 to update certain services and deliverables. When we entered into the original agreement in 2010, URS was also owned by Gores as one of its portfolio companies. Gores divested its ownership interest in URS on December 14, 2012 and URS is no longer under common ownership with the Company. Accordingly, the Company does not consider URS a related party subsequent to December 14, 2012. The Company paid URS $188 and $384 during the three and six months ended June 30, 2012, respectively.
	The Company incurs expenses related to management services provided by Gores and Glendon Saturn Holdings, LLC (“Glendon”), an affiliate of Gores. For the three months ended June 30, 2013 and 2012 and six months ended June 30, 2013 and 2012, these expenses were $560, $362, $966 and $767, respectively, and are included in selling, general and administrative expenses on the consolidated statements of operations. As of June 30, 2013 and December 31, 2012, the Company had accrued expenses of $310 and $119, respectively, related to these management services. These payables are included in accrued expenses and other liabilities on the consolidated balance sheets. The management services agreement with Gores was terminated on August 14, 2013 in connection with the IPO (Note 16).
	As of December 31, 2012, the Company had related party promissory note balances of $401, which represented advances, and accrued interest thereon, due from Glendon and other shareholders of the Company. These notes were repaid in full during the three months ended June 30, 2013.
	On July 1, 2012, the Company made a $531 loan to an executive of the Company related to an exercise of stock options. This loan was forgiven by the Company on June 14, 2013 (Note 13).
	Prior to July 1, 2013, the Company was part of a group health care plan with Gores. As of June 30, 2013 and December 31, 2012, the Company had $1,158 and $750, respectively, on deposit with Gores as a reserve for the payment of run-off health care claims in the event of a Plan termination, which is included in restricted assets on the consolidated balance sheets. As of July 1, 2013, the Company is no longer part of the group health care plan with Gores and maintains an independent health care plan.

Income_taxes

Income taxes	6 Months Ended
	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income taxes	Income taxes
	The Company evaluates its deferred tax assets quarterly to determine if valuation allowances are required. In assessing the realizability of deferred tax assets, the Company considers both positive and negative evidence in determining whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The Company recognized valuation allowances of $1,961 and $1,946 against its deferred tax assets related to certain tax jurisdictions as of June 30, 2013 and December 31, 2012, respectively.
	During the three and six months ended June 30, 2013, the Company recorded additional valuation allowances of $9 and $15 against deferred tax assets related to our continuing operations. During the three and six months ended June 30, 2012, the Company released valuation allowances of $59 and recorded additional valuation allowances of $370, respectively, against deferred tax assets related to our continuing operations. To the extent the Company generates sufficient taxable income in the future to utilize the tax benefits of the net deferred tax assets on which a valuation allowance is recorded, the effective tax rate may decrease as the valuation allowance is reversed. As of June 30, 2013, the Company is no longer able to carry back our tax net operating losses; therefore, to the extent the Company generates future tax net operating losses, the Company may be required to increase the valuation allowance on net deferred tax assets and income tax benefit would be adversely affected.
	For the three and six months ended June 30, 2013, the Company’s effective income tax rate including discontinuing operations and other discrete items was 34.5% and 26.0%, respectively, which varied from the federal statutory rate of 35% primarily due to the capitalization of certain costs. For the three and six months ended June 30, 2012, the Company’s effective income tax rate including discontinuing operations and other discrete items was 37.8% and 34.5%, respectively, which varied from the federal statutory rate of 35% primarily due to state income tax expense and valuation allowance.
	The effective income tax rate on continuing operations for the three months ended June 30, 2013 was 33.9% compared to an effective income tax rate on continuing operations of 38.0% for the three months ended June 30, 2012. The effective income tax rate on continuing operations for the six months ended June 30, 2013 was 28.2% compared to an effective income tax rate on continuing operations of 34.5% for the six months ended June 30, 2012. The decrease in the tax rates for the comparative three month period and six month period are primarily due to the domestic manufacturing deduction tax benefit which was not available in the prior year due to the Company’s tax operating loss position, changes to the valuation allowance against the Company’s deferred tax assets, and the capitalization of certain costs.
	The Company has no material uncertain tax positions as of June 30, 2013 and December 31, 2012.

Commitments_and_contingencies

Commitments and contingencies	6 Months Ended
	Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	Commitments and contingencies
	From time to time, various claims and litigation are asserted or commenced against the Company principally arising from tort, contractual matters, product distribution and installation and personnel and employment disputes. In determining loss contingencies, management considers the likelihood of loss as well as the ability to reasonably estimate the amount of such loss or liability. An estimated loss is recorded when it is considered probable that such a liability has been incurred and when the amount of loss can be reasonably estimated. It is not certain that the Company will prevail in these matters. However, the Company does not believe that the ultimate outcome of any pending matters will have a material adverse effect on its consolidated financial position, results of operations or cash flows.

Equity_and_redeemable_securiti

Equity and redeemable securities	6 Months Ended
	Jun. 30, 2013
Equity and Temporary Equity Disclsoure [Abstract]
Equity and redeemable securities	Equity and redeemable securities
	Common Stock
	The Company has authorized 22,725,500 Class A Voting Common shares and 3,246,500 Class B Non-Voting Common shares with a par value of $0.01 per share. Upon the closing of the IPO, all outstanding shares of Class A Voting Common stock and Class B Non-Voting Common stock were reclassified and converted into an equal number of shares of a single class of common stock (Note 16).
	Preferred Stock
	Class A Junior Preferred Stock
	On May 5, 2009, the Company authorized 10,000 Class A Junior Preferred shares available for issuance with a par value of $0.01 per share. At June 30, 2013 and December 31, 2012, the number of Class A Junior Preferred shares issued and outstanding was 5,100. These preferred shares, held by Gores, are redeemable by the Company at any time after July 31, 2012 for the liquidation preference of $1.00 per share, but have no voting or participation rights other than in the event of a liquidation.
	In the event of an involuntary liquidation, these shares are entitled to the liquidation preference which is to be paid out after Class B Senior Preferred shares and Class C Convertible Preferred shares but before all common shares. Further, these preferred shares have no conversion features into common shares and are recorded as redeemable securities (outside of permanent equity) on the accompanying consolidated balance sheets.
	Upon the closing of the IPO, these shares were reclassified and converted into 365 shares of the Company's common stock (Note 16).
	Class B Senior Preferred Stock
	On June 30, 2009, the Company authorized 500,000 Class B Senior Preferred shares available for issuance with a par value of $0.01 per share. At June 30, 2013 and December 31, 2012, the number of Class B Senior Preferred shares issued and outstanding was 37,467 and 36,388. These preferred shares, held by Gores, are redeemable at any time after May 5, 2011 by the Company for the liquidation preference of $1,000 per share plus accumulated and unpaid dividends.
	These shares have no voting or participating rights, but are eligible to receive cumulative preferential distributions of 8% annually when authorized by the board. Dividends earned, but not declared or paid by the Class B Preferred shares as of June 30, 2013 and December 31, 2012 were $483 and $89, respectively. In the event of an involuntary liquidation, these shares are entitled to the liquidation preference which is to be paid out before all other Preferred and Common shares. These shares are also mandatorily redeemable at the liquidation preference upon an initial public offering. These preferred shares have no conversion features into common shares and are recorded as redeemable securities (outside of permanent equity) on the accompanying consolidated balance sheets.
	Upon the closing of the IPO, these shares were reclassified and converted into 2,736,637 shares of the Company's common stock (Note 16).
	Class C Convertible Preferred Stock
	On January 26, 2012, the Company authorized 5,000 Class C Convertible Preferred shares available for issuance with a par value of $0.01 per share. At June 30, 2013 and December 31, 2012, the number of Class C Convertible Preferred shares issued and outstanding was 5,000. These preferred shares, held by Gores, have the same voting rights as the Class A Voting Common shares. The shares are entitled to receive distributions equal to the amount of distributions as if the shares have been converted into Class A Voting Common shares. In the event of an involuntary liquidation, these shares are entitled to the liquidation which is to be paid out after Class B Preferred shares but before all other Preferred and Common shares. These shares also provide the holder with the option to convert into 4,454,889 Class A Voting Common shares at any time at a conversion price of $1.122. The Class C Convertible Preferred shares are recorded as redeemable securities (outside of permanent equity) on the accompanying consolidated balance sheets. As the conversion rate was less than the deemed fair value of the Class A Common shares of $2.25, the Class C Convertible Preferred shares contained a BCF as described in ASC 470. The difference in the stated conversion price and estimated fair value of the Class A Common shares of $5,000 was accounted for as a BCF. As the option to convert the shares belonged to the holder, the BCF was recognized during the six months ended June 30, 2012 as a deemed dividend, which increased the Company’s net loss attributable to common stockholders by $5,000 as well as the Company’s net loss per share by $0.39.
	Upon the closing of the IPO, these shares were reclassified and converted into 4,454,889 shares of the Company's common stock (Note 16).
	The following table shows the changes in preferred stock:
		Class A			Class B					Class C
		Shares	Amount		Shares		Amount			Shares	Amount
	December 31, 2011	5,100	$	—	48,760		$	54,997		—	$	—
	Issuance of Convertible Class C Preferred stock	—	—		—		—			5,000	5,000
	Recognition of beneficial conversion feature on	—	—		—		—			—	(5,000		)
	Convertible Class C Preferred stock
	Deemed dividend on Convertible Class C Preferred stock	—	—		—		—			—	5,000
	Dividends accrued on Class B Preferred stock	—	—		—		4,480			—	—
	Redemption of Class B Preferred stock	—	—		(12,372	)	(12,372		)	—	—
	Dividends paid on Class B Preferred stock	—	—		—		(10,628		)	—	—
	31-Dec-12	5,100	—		36,388		36,477			5,000	5,000
	Conversion of Saturn Acquisition Holdings, LLC preferred stock to Stock Building Supply Holdings, Inc. preferred stock (Note 1)	—	—		1,079		—			—	—
	Dividends accrued on Class B preferred stock	—	—		—		1,473			—	—
	June 30, 2013	5,100	$	—	37,467		$	37,950		5,000	$	5,000

Equity_based_compensation

Equity based compensation	6 Months Ended
	Jun. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity based compensation	Equity based compensation
	The following table highlights the expense related to share-based payments for the three months and six months ended June 30:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013				2012
	Nonvested stock	$	54		$	54		$	136			$	108
	Stock options	64			83			128				230
	Stock purchases	—			215			—				342
	Stock based compensation	$	118		$	352		$	264			$	680
	The following is a summary of nonvested stock awards and stock option awards:
		Nonvested Stock					Stock Options
		Number of		Weighted			Number of			Weighted
		shares		average			options			average
		outstanding		grant date			outstanding			exercise
				fair value						price
	December 31, 2012	396,073		$	1.06		772,851			$	0.97
	Granted	546,244		17			—			—
	Vested/exercised	(366,854	)	0.93			(546,244	)		0.97
	June 30, 2013	575,463		$	16.27		226,607			$	0.97
	As described in Note 9, the Company forgave a $531 loan to an executive of the Company on June 14, 2013 related to an exercise of 546,244 stock options. Prior to the date of the loan forgiveness, the options were legally exercised, but not considered exercised for accounting purposes. As of the date of the loan forgiveness, the options were considered exercised for accounting purposes. The exercised shares retained their original vesting requirements, and as such, are presented as both an exercise of stock options and a grant of nonvested stock in the table above. The transaction was accounted for as a modification. Incremental compensation expense related to the modification of $508 will be recognized over the remaining vesting period of the shares.

Segments

Segments	6 Months Ended
	Jun. 30, 2013
Segment Reporting [Abstract]
Segments	Segments
	ASC 280, Segment Reporting (“ASC 280”) defines operating segments as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance.
	Our operating segments consist of the East, South, and West geographic divisions along with Coleman Flooring. Due to the similar economic characteristics, nature of products, distribution methods, and customers, we have aggregated our East, South and West operating segments into one reportable segment.
	In addition to our reportable segment, the Company's consolidated results include "Other", which is comprised of Coleman Flooring, which offers professional flooring installation services, and "Other reconciling items," which is comprised of our corporate activities.
	The following tables present Net Sales, Adjusted EBITDA and certain other measures for the reportable segment and total continuing operations for the three months and six months ended June 30, 2013 and 2012:
		Three Months Ended June 30, 2013												30-Jun-13
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA			Total Assets
	Geographic divisions	$	302,666		$	69,085		$	2,925		$	14,788		$	320,500
	Other	11,987			2,425			33			397			8,309
	Other reconciling items	—			—			109			(6,159		)	21,141
		$	314,653		$	71,510		$	3,067					$	349,950
		Three Months Ended June 30, 2012												30-Jun-12
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA			Total Assets
	Geographic divisions	$	237,212		$	52,929		$	2,583		$	7,669		$	272,865
	Other	9,280			2,125			32			494			5,630
	Other reconciling items	—			—			416			(5,851		)	19,804
		$	246,492		$	55,054		$	3,031					$	298,299
		Six Months Ended June 30, 2013
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA
	Geographic divisions	$	541,183		$	120,618		$	5,548		$	19,372
	Other	22,196			4,682			65			824
	Other reconciling items	—			—			413			(12,391		)
		$	563,379		$	125,300		$	6,026
		Six Months Ended June 30, 2012
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA
	Geographic divisions	$	418,020		$	94,872		$	5,148		$	6,668
	Other	16,411			3,613			65			373
	Other reconciling items	—			—			848			(12,386		)
		$	434,431		$	98,485		$	6,061
	Reconciliation to consolidated financial statements:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013			2012
	Net income (loss), as reported	$	1,978		$	(2,237	)	$	(2,079	)	$	(10,803	)
	Interest expense	1,233			1,085			2,258			2,048
	Income tax benefit	966			(1,293		)	(913		)	(5,556		)
	Depreciation and amortization	3,067			3,031			6,026			6,061
	Discontinued operations, net of taxes	(94		)	128			(251		)	241
	Restructuring expense	39			(23		)	99			21
	Management fees	560			362			966			767
	Non-cash stock compensation expense	118			352			264			680
	Acquisition costs	154			—			257			46
	Severance and other expense related to store closures and business optimization	319			560			492			803
	Reduction of tax indemnification asset	—			347			—			347
	Non-capitalizable expense associated with the initial public offering	686			—			686			—
	Adjusted EBITDA of other operating segment	(397		)	(494		)	(824		)	(373		)
	Adjusted EBITDA of other reconciling items	6,159			5,851			12,391			12,386
	Adjusted EBITDA of geographic divisions reportable segment	$	14,788		$	7,669		$	19,372		$	6,668

Income_loss_per_common_share

Income (loss) per common share	6 Months Ended
	Jun. 30, 2013
Earnings Per Share [Abstract]
Income (loss) per common share	Income (loss) per common share
	Basic net income (loss) per share (“EPS”) is calculated by dividing net income (loss) attributable to common stockholders by the weighted average shares outstanding during the period. Diluted EPS is calculated by adjusting weighted average shares outstanding for the dilutive effect of common share equivalents outstanding for the period, determined using the treasury-stock method. For purposes of the diluted EPS calculation, stock options and nonvested stock awards are considered to be common stock equivalents. Convertible Class C Preferred shares are considered to be participating securities. During periods of net income, participating securities are allocated a proportional share of net income determined by dividing total weighted average participating securities by the sum of total weighted average common shares and participating securities (“the two-class method”). During periods of net loss, no effect is given to participating securities, since they do not share in the losses of the Company.
	The basic and diluted EPS calculations for the three months and six months ended June 30, 2013 and 2012 are presented below:
	Basic EPS	Three months ended June 30,
		2013				2012
	Income (loss) from continuing operations	$	1,884			$	(2,109	)
	Redeemable Class B Senior Preferred stock deemed dividend	(744		)		(1,122		)
	Income from continuing operations allocated to participating securities	(279		)		—
	Income (loss) available to common stockholders, from continuing operations	861				(3,231		)
	Income (loss) from discontinued operations, net of tax	94				(128		)
	Income from discontinued operations allocated to participating securities	(23		)		—
	Income (loss) available to common stockholders, from discontinued operations	71				(128		)
	Income (loss) available to common stockholders	$	932			$	(3,359	)
	Weighted average outstanding shares of common stock	13,750,400				13,178,143
	Basic EPS
	Income (loss) from continuing operations	$	0.06			$	(0.24	)
	Income (loss) from discontinued operations	0.01				(0.01		)
	Basic EPS	$	0.07			$	(0.25	)
	Diluted EPS	Three months ended June 30,
		2013				2012
	Income (loss) from continuing operations	$	1,884			$	(2,109	)
	Redeemable Class B Senior Preferred stock deemed dividend	(744		)		(1,122		)
	Income (loss) available to common stockholders, from continuing operations	1,140				(3,231		)
	Income (loss) from discontinued operations, net of tax	94				(128		)
	Income (loss) available to common stockholders	$	1,234			$	(3,359	)
	Weighted average outstanding shares of common stock	13,750,400				13,178,143
	Redeemable Class C Convertible Preferred stock	4,454,889				—
	Nonvested shares	565,241				—
	Options to purchase common stock	117,147				—
	Weighted average shares and dilutive shares	18,887,677				13,178,143
	Diluted EPS
	Income (loss) from continuing operations	$	0.06			$	(0.24	)
	Income (loss) from discontinued operations	0.01				(0.01		)
	Diluted EPS	$	0.07			$	(0.25	)
	Basic and diluted EPS	Six months ended June 30,
		2013				2012
	Loss from continuing operations	$	(2,330	)		$	(10,562	)
	Redeemable Class B Senior Preferred stock deemed dividend	(1,473		)		(2,222		)
	Convertible Class C Preferred stock dividends	—				(5,000		)
	Loss available to common stockholders, from continuing operations	(3,803		)		(17,784		)
	Income (loss) from discontinued operations, net of tax	251				(241		)
	Loss available to common stockholders	$	(3,552	)		$	(18,025	)
	Weighted average outstanding shares of common stock	13,637,462				12,937,474
	Basic and diluted EPS
	Loss from continuing operations	$	(0.28	)		$	(1.37	)
	Income (loss) from discontinued operations	0.02				(0.02		)
	Basic and diluted EPS	$	(0.26	)		$	(1.39	)
	The following table provides the securities that could potentially dilute basic earnings per share in the future, but were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013	2012
	Stock option awards	—			1,006,936			575,463	1,006,936
	Nonvested stock awards	—			454,510			226,607	454,510
	Convertible Class C Preferred Stock (as converted basis)	—			4,454,889			4,454,889	4,454,889

Subsequent_events

Subsequent events	6 Months Ended
	Jun. 30, 2013
Subsequent Events [Abstract]
Subsequent events	Subsequent events
	On July 29, 2013, the Company filed an amendment to its Certificate of Incorporation effecting a 25.972-for-1 stock split of the Company’s common stock. The consolidated financial statements give retroactive effect to the stock split.
	On August 14, 2013, the Company completed its IPO of 7,000,000 shares of common stock at a price of $14.00 per share. A total of 4,411,765 shares were offered by the Company and a total of 2,588,235 shares were sold by Gores and other selling stockholders of the Company. In connection with the IPO, the underwriters exercised in full their option to purchase an additional 1,050,000 shares of common stock from certain selling stockholders. As a result, the total IPO size was 8,050,000 shares. The Company received net proceeds of $55,191 after deducting underwriting discounts of $4,324 and other estimated offering expenses of approximately $2,250. Of this amount, $46,191 was used to pay down outstanding balances under the Revolver and $9,000 was paid to Gores to terminate our management services agreement with Gores. Upon the closing of the IPO, all outstanding shares of the Company’s Class A Voting Common stock and Class B Non-Voting common stock were reclassified and converted into an equal number of shares of a single class of common stock, all outstanding options to purchase Class B Non-Voting common stock held by certain members of management were reclassified and converted into options to purchase an equal number of shares of common stock and all outstanding Redeemable Class A Junior Preferred stock, Redeemable Class B Senior Preferred stock and Convertible Class C Preferred stock were reclassified and converted into an aggregate of 7,191,891 shares of the Company’s common stock.
	Upon the consummation of the IPO and the filing of its Amended and Restated Certificate of Incorporation on August 14, 2013, the Company’s classes of stockholders’ equity consisted of (i) preferred stock, $0.01 par value, 50,000,000 shares authorized and no shares issued or outstanding, and (ii) common stock, $0.01 par value, 300,000,000 shares authorized and 26,107,231 shares issued and outstanding, inclusive of 42,858 shares of nonvested stock issued upon consummation of the IPO, as discussed below.
	Upon the consummation of the IPO, the Company issued options to purchase 466,356 shares of common stock to certain employees and officers of the Company. The exercise price of these stock options is $14.00 per share. 373,854 options will vest 1/3 each on the first, second and third anniversary of the grant and 92,502 options will vest 1/3 each on the second, third and fourth anniversary of the grant. Total unrecognized compensation expense related to these non-vested options is approximately $3,254.
	Upon the consummation of the IPO, the Company issued 42,858 shares of nonvested stock to certain officers of the Company. 19,048 shares will vest 1/3 each on the first, second and third anniversary of the grant and 23,810 shares will vest 1/3 each on the second, third and fourth anniversary of the grant. Total unrecognized compensation expense related to these non-vested shares is approximately $600.
	Upon the consummation of the IPO, the Company issued 10,000 restricted stock units to two directors of the Company. These units vest 50% on the first anniversary of the grant and 50% on the second anniversary of the grant. Total unrecognized compensation expense related to these non-vested units is approximately $140.

Basis_of_Presentation_Basis_of

Basis of Presentation Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) that permit reduced disclosure for interim periods. The condensed consolidated balance sheet as of December 31, 2012 was derived from audited financial statements, but does not include all necessary disclosures required by accounting principles generally accepted in the United States of America (“GAAP”). The unaudited condensed consolidated financial statements include all accounts of the Company and its subsidiaries and, in the opinion of management, include all recurring adjustments and normal accruals necessary for a fair statement of the Company’s financial position, results of operations and cash flows for the dates and periods presented. These unaudited financial statements should be read in conjunction with the Company’s most recent audited annual financial statements. Results for interim periods are not necessarily indicative of the results to be expected during the remainder of the current year or for any future period. All material intercompany accounts and transactions have been eliminated in consolidation.

Discontinued_operations_Tables

Discontinued operations (Tables)	6 Months Ended
	Jun. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]
Schedule of discontinued operations, income statement and balance sheet	The operating results of the discontinued operations for the three and six months ended June 30, 2013 and 2012 are as follows:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013			2012
	Net sales	$	—		$	311		$	—		$	584
	Restructuring charges	(9		)	1			(18		)	39
	Gain (loss) before income taxes	168			(192		)	434			(384		)
	Income tax benefit (expense)	(74		)	64			(183		)	143
	Net income (loss)	94			(128		)	251			(241		)
	The assets and liabilities of discontinued operations reflected on the consolidated balance sheets at June 30, 2013 and December 31, 2012 are as follows:
		June 30,			December 31,
		2013			2012
	Inventories, net	$	—		$	20
	Real estate held for sale	700			700
	Prepaid expenses and other current assets	34			35
	Current assets of discontinued operations	734			755
	Property and equipment, net of accumulated depreciation	—			28
	Noncurrent assets of discontinued operations	—			28
	Accounts payable	2			2
	Accrued expenses and other liabilities	129			167
	Restructuring reserve	285			277
	Current liabilities of discontinued operations	416			446
	Long-term restructuring reserve	239			384
	Other long-term liabilities	—			4
	Noncurrent liabilities of discontinued operations	$	239		$	388

Restructuring_costs_Tables

Restructuring costs (Tables)	6 Months Ended
	Jun. 30, 2013
Restructuring and Related Activities [Abstract]
Schedule of restructuring expenses	The following table summarizes the restructuring expenses incurred in connection with the Restructurings and the remaining reserves as of June 30, 2013 and 2012:
		Work force			Store			Total
		reductions			closures
	Restructuring reserves, December 31, 2012	$	353		$	4,772		$	5,125
	Restructuring charges incurred	—			117			117
	Cash payments	(75		)	(797		)	(872		)
	Restructuring reserves, June 30, 2013	$	278		$	4,092		$	4,370
		Work force			Store			Total
		reductions			closures
	Restructuring reserves, December 31, 2011	$	65		$	3,935		$	4,000
	Restructuring gain recognized	—			(18		)	(18		)
	Cash payments	(65		)	(900		)	(965		)
	Restructuring reserves, June 30, 2012	$	—		$	3,017		$	3,017

Goodwill_Tables

Goodwill (Tables)	6 Months Ended
	Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in goodwill	The following table shows changes in goodwill for the six months ended June 30, 2013. The goodwill recognized related to the acquisition of Chesapeake is recorded in the geographic divisions reportable segment (Note 14):
	December 31, 2012	$	6,511
	Acquisition of Chesapeake (Note 4)	675
	June 30, 2013	$	7,186

Secured_Credit_Agreement_Table

Secured Credit Agreement (Tables)	6 Months Ended
	Jun. 30, 2013
Debt Disclosure [Abstract]
Schedule of secured credit agreement	The following is a summary of the significant terms of the Revolver:
	Maturity	31-Dec-16
	Interest/Usage Rate	Company’s option of Base Rate(a) plus a Base Rate Margin (ranges from 0.50%–1.00% based on Revolver availability) or LIBOR plus a LIBOR Rate Margin (ranges from 1.50%–2.00% based on Revolver availability)
	Maximum Availability	Lesser of $150,000 or the borrowing base(b)
	Periodic Principal Payments	None
	(a)	Base Rate is the higher of (i) the Federal Funds Rate plus 0.5% or (ii) the prime rate.
	(b)	The Revolver’s borrowing base is calculated as the sum of (i) 85% of the Company’s eligible accounts receivable plus (ii) the lesser of 90% of the eligible credit card receivables and $5,000, plus (iii) the lesser of $125,000, 65% of the eligible inventory or 85% of the net liquidation value of eligible inventory as defined in the Credit Agreement minus (iv) reserves from time to time set by the administrative agent. The eligible accounts receivable and inventories are further adjusted as specified in the agreement. The Company’s borrowing base can also be increased pursuant to certain terms outlined in the Credit Agreement.

Equity_and_redeemable_securiti1

Equity and redeemable securities (Tables)	6 Months Ended
	Jun. 30, 2013
Equity and Temporary Equity Disclsoure [Abstract]
Schedule of temporary equity	The following table shows the changes in preferred stock:
		Class A			Class B					Class C
		Shares	Amount		Shares		Amount			Shares	Amount
	December 31, 2011	5,100	$	—	48,760		$	54,997		—	$	—
	Issuance of Convertible Class C Preferred stock	—	—		—		—			5,000	5,000
	Recognition of beneficial conversion feature on	—	—		—		—			—	(5,000		)
	Convertible Class C Preferred stock
	Deemed dividend on Convertible Class C Preferred stock	—	—		—		—			—	5,000
	Dividends accrued on Class B Preferred stock	—	—		—		4,480			—	—
	Redemption of Class B Preferred stock	—	—		(12,372	)	(12,372		)	—	—
	Dividends paid on Class B Preferred stock	—	—		—		(10,628		)	—	—
	31-Dec-12	5,100	—		36,388		36,477			5,000	5,000
	Conversion of Saturn Acquisition Holdings, LLC preferred stock to Stock Building Supply Holdings, Inc. preferred stock (Note 1)	—	—		1,079		—			—	—
	Dividends accrued on Class B preferred stock	—	—		—		1,473			—	—
	June 30, 2013	5,100	$	—	37,467		$	37,950		5,000	$	5,000

Equity_based_compensation_Tabl

Equity based compensation (Tables)	6 Months Ended
	Jun. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of expenses related to share-based payments	The following table highlights the expense related to share-based payments for the three months and six months ended June 30:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013				2012
	Nonvested stock	$	54		$	54		$	136			$	108
	Stock options	64			83			128				230
	Stock purchases	—			215			—				342
	Stock based compensation	$	118		$	352		$	264			$	680
Schedule of nonvested stock awards and stock option awards	The following is a summary of nonvested stock awards and stock option awards:
		Nonvested Stock					Stock Options
		Number of		Weighted			Number of			Weighted
		shares		average			options			average
		outstanding		grant date			outstanding			exercise
				fair value						price
	December 31, 2012	396,073		$	1.06		772,851			$	0.97
	Granted	546,244		17			—			—
	Vested/exercised	(366,854	)	0.93			(546,244	)		0.97
	June 30, 2013	575,463		$	16.27		226,607			$	0.97

Segments_Tables

Segments (Tables)	6 Months Ended
	Jun. 30, 2013
Segment Reporting [Abstract]
Schedule of net sales, adjusted EBITDA and certain other measures by reportable segment	The following tables present Net Sales, Adjusted EBITDA and certain other measures for the reportable segment and total continuing operations for the three months and six months ended June 30, 2013 and 2012:
		Three Months Ended June 30, 2013												30-Jun-13
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA			Total Assets
	Geographic divisions	$	302,666		$	69,085		$	2,925		$	14,788		$	320,500
	Other	11,987			2,425			33			397			8,309
	Other reconciling items	—			—			109			(6,159		)	21,141
		$	314,653		$	71,510		$	3,067					$	349,950
		Three Months Ended June 30, 2012												30-Jun-12
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA			Total Assets
	Geographic divisions	$	237,212		$	52,929		$	2,583		$	7,669		$	272,865
	Other	9,280			2,125			32			494			5,630
	Other reconciling items	—			—			416			(5,851		)	19,804
		$	246,492		$	55,054		$	3,031					$	298,299
		Six Months Ended June 30, 2013
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA
	Geographic divisions	$	541,183		$	120,618		$	5,548		$	19,372
	Other	22,196			4,682			65			824
	Other reconciling items	—			—			413			(12,391		)
		$	563,379		$	125,300		$	6,026
		Six Months Ended June 30, 2012
		Net sales			Gross Profit			Depreciation & Amortization			Adjusted EBITDA
	Geographic divisions	$	418,020		$	94,872		$	5,148		$	6,668
	Other	16,411			3,613			65			373
	Other reconciling items	—			—			848			(12,386		)
		$	434,431		$	98,485		$	6,061
Reconciliation to consolidated financial statements:	Reconciliation to consolidated financial statements:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013			2012
	Net income (loss), as reported	$	1,978		$	(2,237	)	$	(2,079	)	$	(10,803	)
	Interest expense	1,233			1,085			2,258			2,048
	Income tax benefit	966			(1,293		)	(913		)	(5,556		)
	Depreciation and amortization	3,067			3,031			6,026			6,061
	Discontinued operations, net of taxes	(94		)	128			(251		)	241
	Restructuring expense	39			(23		)	99			21
	Management fees	560			362			966			767
	Non-cash stock compensation expense	118			352			264			680
	Acquisition costs	154			—			257			46
	Severance and other expense related to store closures and business optimization	319			560			492			803
	Reduction of tax indemnification asset	—			347			—			347
	Non-capitalizable expense associated with the initial public offering	686			—			686			—
	Adjusted EBITDA of other operating segment	(397		)	(494		)	(824		)	(373		)
	Adjusted EBITDA of other reconciling items	6,159			5,851			12,391			12,386
	Adjusted EBITDA of geographic divisions reportable segment	$	14,788		$	7,669		$	19,372		$	6,668

Income_loss_per_common_share_T

Income (loss) per common share (Tables)	6 Months Ended
	Jun. 30, 2013
Earnings Per Share [Abstract]
Schedule of basic and diluted EPS calculations	The basic and diluted EPS calculations for the three months and six months ended June 30, 2013 and 2012 are presented below:
	Basic EPS	Three months ended June 30,
		2013				2012
	Income (loss) from continuing operations	$	1,884			$	(2,109	)
	Redeemable Class B Senior Preferred stock deemed dividend	(744		)		(1,122		)
	Income from continuing operations allocated to participating securities	(279		)		—
	Income (loss) available to common stockholders, from continuing operations	861				(3,231		)
	Income (loss) from discontinued operations, net of tax	94				(128		)
	Income from discontinued operations allocated to participating securities	(23		)		—
	Income (loss) available to common stockholders, from discontinued operations	71				(128		)
	Income (loss) available to common stockholders	$	932			$	(3,359	)
	Weighted average outstanding shares of common stock	13,750,400				13,178,143
	Basic EPS
	Income (loss) from continuing operations	$	0.06			$	(0.24	)
	Income (loss) from discontinued operations	0.01				(0.01		)
	Basic EPS	$	0.07			$	(0.25	)
	Diluted EPS	Three months ended June 30,
		2013				2012
	Income (loss) from continuing operations	$	1,884			$	(2,109	)
	Redeemable Class B Senior Preferred stock deemed dividend	(744		)		(1,122		)
	Income (loss) available to common stockholders, from continuing operations	1,140				(3,231		)
	Income (loss) from discontinued operations, net of tax	94				(128		)
	Income (loss) available to common stockholders	$	1,234			$	(3,359	)
	Weighted average outstanding shares of common stock	13,750,400				13,178,143
	Redeemable Class C Convertible Preferred stock	4,454,889				—
	Nonvested shares	565,241				—
	Options to purchase common stock	117,147				—
	Weighted average shares and dilutive shares	18,887,677				13,178,143
	Diluted EPS
	Income (loss) from continuing operations	$	0.06			$	(0.24	)
	Income (loss) from discontinued operations	0.01				(0.01		)
	Diluted EPS	$	0.07			$	(0.25	)
	Basic and diluted EPS	Six months ended June 30,
		2013				2012
	Loss from continuing operations	$	(2,330	)		$	(10,562	)
	Redeemable Class B Senior Preferred stock deemed dividend	(1,473		)		(2,222		)
	Convertible Class C Preferred stock dividends	—				(5,000		)
	Loss available to common stockholders, from continuing operations	(3,803		)		(17,784		)
	Income (loss) from discontinued operations, net of tax	251				(241		)
	Loss available to common stockholders	$	(3,552	)		$	(18,025	)
	Weighted average outstanding shares of common stock	13,637,462				12,937,474
	Basic and diluted EPS
	Loss from continuing operations	$	(0.28	)		$	(1.37	)
	Income (loss) from discontinued operations	0.02				(0.02		)
	Basic and diluted EPS	$	(0.26	)		$	(1.39	)
Schedule of anti-dilutive securities excluded from computation of earnings per share	The following table provides the securities that could potentially dilute basic earnings per share in the future, but were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive:
		Three months ended June 30,						Six months ended June 30,
		2013			2012			2013	2012
	Stock option awards	—			1,006,936			575,463	1,006,936
	Nonvested stock awards	—			454,510			226,607	454,510
	Convertible Class C Preferred Stock (as converted basis)	—			4,454,889			4,454,889	4,454,889

Organization_Details

Organization (Details) (USD $)

0 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Nov. 16, 2011

5-May-09

Nov. 16, 2011

2-May-13

2-May-13

Nov. 16, 2011

2-May-13

2-May-13

2-May-13

Nov. 16, 2011

5-May-09

5-May-09

Stock Building Supply Holdings, LLC and Subsidiaries [Member]

Class A Common Stock [Member]

Class A Common Stock [Member]

Class B Common Stock [Member]

Class A Junior Preferred Stock [Member]

Class A Junior Preferred Stock [Member]

Convertible Class C Preferred Stock [Member]

Redeemable Class B Senior Preferred Stock [Member]

Gores [Member]

Gores [Member]

Wolseley [Member]

Schedule of Business Organization [Line Items]

Affiliated entity, payments to acquire company, gross

$1

$1

Affiliated entity, percentage of company's voting interest acquired

51.00%

49.00%

Voting interests acquired

100.00%

Company stock purchased

11,135,495

4,900

Business acquisition, cash consideration transferred

25,000

Payments to acquire interest in company, portion funded by line of credit

15,000

Payments to acquired interest in company, cash portion

5,000

Payments to acquired interest in company, cash portion contributed by affiliated entity

$5,000

Conversion of stock, shares issued per share converted

1

1

1

1

1.02966258

Restatement_of_previously_issu1

Restatement of previously issued consolidated financial statements (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income taxes payable	$4,492	$2,939
Additional paid-in capital	45,726	46,534
Restatement Adjustment [Member]
Income taxes payable		-177
Additional paid-in capital		$506

Acquisitions_Details

Acquisitions (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Apr. 08, 2013	Jun. 30, 2013	Jun. 30, 2013	Jun. 30, 2013
						Commonwealth Acquisition Holdings, LLC [Member]	Commonwealth Acquisition Holdings, LLC [Member]	Commonwealth Acquisition Holdings, LLC [Member]	Commonwealth Acquisition Holdings, LLC [Member]
						Chesapeake [Member]	Chesapeake [Member]	Chesapeake [Member]	Chesapeake [Member]
								Selling, General and Administrative Expenses [Member]	Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business combination, adjusted purchase price						$2,623
Business combination, holdback incurred						250
Business combination, transaction costs	154	0	257	46				147	151
Business combination, net sales of acquiree since acquisition date, actual							2,420
Intangible assets acquired						1,160
Intangible assets acquired, weighted average useful life						13 years
Goodwill	$7,186		$7,186		$6,511	$675

Discontinued_operations_Income

Discontinued operations (Income statement disclosures) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales	$0	$311	$0	$584
Restructuring charges	-9	1	-18	39
Gain (loss) before income taxes	168	-192	434	-384
Income tax benefit (expense)	-74	64	-183	143
Net income (loss)	$94	($128)	$251	($241)

Discontinued_operations_Balanc

Discontinued operations (Balance sheet disclosures) (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract]
Inventories, net	$0	$20
Real estate held for sale	700	700
Prepaid expenses and other current assets	34	35
Current assets of discontinued operations	734	755
Property and equipment, net of accumulated depreciation	0	28
Noncurrent assets of discontinued operations	0	28
Accounts payable	2	2
Accrued expenses and other liabilities	129	167
Restructuring reserve	285	277
Current liabilities of discontinued operations	416	446
Long-term restructuring reserve	239	384
Other long-term liabilities	0	4
Noncurrent liabilities of discontinued operations	$239	$388

Restructuring_costs_Schedule_o

Restructuring costs (Schedule of restructuring expenses) (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Restructuring Reserve [Roll Forward]
Beginning balance	$5,125	$4,000
Restructuring charges incurred	117
Restructuring gain recognized		-18
Cash payments	-872	-965
Ending balance	4,370	3,017
Workforce reductions [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	353	65
Restructuring charges incurred	0
Restructuring gain recognized		0
Cash payments	-75	-65
Ending balance	278	0
Store closures [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	4,772	3,935
Restructuring charges incurred	117
Restructuring gain recognized		-18
Cash payments	-797	-900
Ending balance	$4,092	$3,017

Restructuring_costs_Narrative_

Restructuring costs (Narrative) (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$4,370	$5,125	$3,017	$4,000
Current portion of restructuring reserve	1,550	1,513
Noncurrent portion of restructuring reserve	2,820
Workforce reductions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	278	353	0	65
Store closures [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$4,092	$4,772	$3,017	$3,935

Goodwill_Details

Goodwill (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013
Goodwill [Roll Forward]
Goodwill at beginning of period	$6,511
Acquisition of Chesapeake (Note 4)	675
Goodwill at end of period	$7,186

Secured_Credit_Agreement_Detai

Secured Credit Agreement (Details) (Revolving Credit Facility [Member], Wells Fargo Capital Finance [Member], USD $)

6 Months Ended

6 Months Ended

6 Months Ended

1 Months Ended

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Minimum [Member]

Maximum [Member]

85% of eligible accounts receivable [Member]

Lesser of 90% of eligible credit card receivables and $5,000 [Member]

Lesser of $125,000, 65% of the eligible inventory or 85% of the net liquidation value of eligible inventory [Member]

Base Rate [Member]

Base Rate [Member]

LIBOR [Member]

LIBOR [Member]

LIBOR [Member]

LIBOR [Member]

Base Rate Option [Member]

Base Rate Option [Member]

Base Rate Option [Member]

LIBOR Rate Option [Member]

LIBOR Rate Option [Member]

Minimum [Member]

Maximum [Member]

Federal Funds Rate [Member]

Base Rate [Member]

Base Rate [Member]

LIBOR [Member]

LIBOR [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Line of Credit Facility [Line Items]

Maximum borrowing capacity

$150,000,000

Basis spread on variable rate

0.50%

0.50%

1.00%

1.50%

2.00%

Borrowing base, percentage of accounts receivable

85.00%

Borrowing base, percentage of credit card receivables

90.00%

Borrowing base, percentage of eligible inventory

65.00%

Borrowing base, percentage of net liquidation value of eligible inventory

85.00%

Portion of borrowing base

5,000,000

125,000,000

Unused capacity, commitment fee percentage

0.25%

0.38%

Unused capacity, average daily usage, basis used to calculate commitment fee

75,000,000

Minimum fixed charge coverage ratio

1

Threshold for minimum adjusted liquidity

15,000,000

Maximum adjusted liquidity for 30 consecutive days

15,000,000

Maximum suppressed availability

15,000,000

Minimum suppressed availability

0

Credit facility, amount outstanding

117,699,000

72,218,000

6,699,000

7,218,000

111,000,000

65,000,000

Remaining borrowing capacity

22,301,000

31,344,000

Letters of credit, amount outstanding

$10,000,000

$7,550,000

Interest rate at period end

4.25%

5.00%

2.30%

3.10%

3.30%

Related_party_transactions_Det

Related party transactions (Details) (USD $)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

In Thousands, unless otherwise specified

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2012

Jun. 30, 2012

Dec. 31, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Dec. 31, 2012

Jul. 02, 2012

Jun. 30, 2013

Dec. 31, 2012

URS [Member]

URS [Member]

Glendon [Member]

Glendon [Member]

Glendon [Member]

Glendon [Member]

Glendon [Member]

Glendon [Member]

Glendon [Member]

Executive [Member]

Gores [Member]

Gores [Member]

Software, Services, License And Maintenance Services Agreement [Member]

Software, Services, License And Maintenance Services Agreement [Member]

Management Services [Member]

Management Services [Member]

Management Services [Member]

Management Services [Member]

Management Services [Member]

Management Services [Member]

Selling, General and Administrative Expenses [Member]

Selling, General and Administrative Expenses [Member]

Selling, General and Administrative Expenses [Member]

Selling, General and Administrative Expenses [Member]

Accrued Expenses and Other Liabilities [Member]

Accrued Expenses and Other Liabilities [Member]

Related Party Transaction [Line Items]

Expenses from transactions with related party

$560

$362

$966

$767

$188

$384

$560

$362

$966

$767

Management services expenses

310

119

Related party promissory note

401

Loan related to an exercise of stock options

531

Group health care plan deposits

$1,158

$750

Income_taxes_Details

Income taxes (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Valuation allowance	$1,961		$1,961		$1,946
Increase (decrease) in valuation allowance from continuing operations	$9	($59)	$15	$370
Effective income tax rate reconciliation including discontinued operations	34.50%	37.80%	26.00%	34.50%
Effective income tax rate	33.90%	38.00%	28.20%	34.50%
Federal statutory rate	35.00%	35.00%	35.00%	35.00%

Equity_and_redeemable_securiti2

Equity and redeemable securities (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	6 Months Ended	12 Months Ended			0 Months Ended					0 Months Ended					0 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Aug. 14, 2013	Jun. 30, 2013	Dec. 31, 2012	Jan. 26, 2012	Dec. 31, 2011	Aug. 14, 2013	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2009	Aug. 14, 2013	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	5-May-09	Aug. 14, 2013	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2013	Dec. 31, 2012
					Subsequent Event [Member]	Convertible Class C Preferred Stock [Member]	Convertible Class C Preferred Stock [Member]	Convertible Class C Preferred Stock [Member]	Convertible Class C Preferred Stock [Member]	Convertible Class C Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Class A Common Stock [Member]	Class A Common Stock [Member]	Class A Common Stock [Member]	Class B Common Stock [Member]	Class B Common Stock [Member]
										Subsequent Event [Member]					Subsequent Event [Member]					Subsequent Event [Member]
Class of Stock [Line Items]
Common stock, shares authorized					300,000,000																22,725,500	22,725,500		3,246,500	3,246,500
Common stock, par value					$0.01																$0.01	$0.01		$0.01	$0.01
Temporary equity, shares authorized						5,000	5,000	5,000			500,000	500,000		500,000		10,000	10,000		10,000
Temporary equity, par value						$0.01	$0.01	$0.01			$0.01	$0.01		$0.01		$0.01	$0.01		$0.01
Temporary equity, shares issued						5,000	5,000				75,000	75,000				10,000	10,000
Temporary equity, shares outstanding						5,000	5,000		0		37,467	36,388	48,760			5,100	5,100	5,100
Conversion of preferred stock (shares)					7,191,891					4,454,889					2,736,637					365
Temporary equity, liquidation preference per share														$1,000					$1
Temporary equity, dividend rate														8.00%
Temporary equity, dividends earned but not declared or paid											$483	$89
Temporary equity, common stock shares issued if converted						4,454,889
Temporary equity, conversion price						$1.12
Share price (dollars per share)					$14																		$2.25
Recognition of beneficial conversion feature	0	0	0	5,000		5,000	5,000
Deemed dividend						$5,000	$5,000
Deemed dividend, impact on earnings per share						($0.39)

Equity_and_redeemable_securiti3

Equity and redeemable securities (Schedule of temporary equity) (Details) (USD $)	3 Months Ended		6 Months Ended					6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013	Dec. 31, 2012
					Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class A Junior Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Redeemable Class B Senior Preferred Stock [Member]	Convertible Class C Preferred Stock [Member]	Convertible Class C Preferred Stock [Member]
Temporary Equity [Line Items]
Beginning balance					$0	$0	$0	$36,477	$54,997	$5,000	$0
Beginning balance (in shares)					5,100	5,100	5,100	36,388	48,760	5,000	0
Issuance of Convertible Class C Preferred stock											5,000
Issuance of Convertible Class C Preferred stock (in shares)											5,000
Recognition of beneficial conversion feature on Convertible Class C Preferred stock	0	0	0	-5,000						-5,000	-5,000
Deemed dividend on Convertible Class C Preferred stock										5,000	5,000
Dividends accrued on Class B Preferred stock								1,473	4,480
Redemption of Preferred stock									-12,372
Redemption of Preferred stock (in shares)									-12,372
Conversion of Saturn Acquisition Holdings, LLC preferred stock to Stock Building Supply Holdings, Inc. preferred stock (Note 1)								1,079
Dividends paid on Class B Preferred stock									-10,628
Ending balance (in shares)					5,100	5,100	5,100	37,467	36,388	5,000	5,000
Ending balance					$0	$0	$0	$37,950	$36,477	$5,000	$5,000

Equity_based_compensation_Stoc

Equity based compensation (Stock based compensation expense) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$118	$352	$264	$680
Nonvested Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	54	54	136	108
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	64	83	128	230
Stock purchases [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$0	$215	$0	$342

Equity_based_compensation_Summ

Equity based compensation (Summary of non-vested stock awards and stock option awards) (Details) (USD $)	6 Months Ended
	Jun. 30, 2013
Nonvested Stock [Member]
Nonvested Stock, number of shares outstanding (in shares):
Beginning balance	396,073
Granted	546,244
Vested	-366,854
Ending balance	575,463
Nonvested Stock, Weighted average grant date fair value (in dollars per share):
Beginning balance	$1.06
Granted	$17
Vested	$0.93
Ending balance	$16.27
Stock Option [Member]
Stock Options, Number of options outstanding (in shares):
Beginning balance	772,851
Granted	0
Exercised	-546,244
Ending balance	226,607
Stock Options, Weighted average exercise price (in dollars per share):
Beginning balance	$0.97
Granted	$0
Exercised	$0.97
Ending balance	$0.97

Equity_based_compensation_Narr

Equity based compensation (Narrative) (Details) (USD $)	0 Months Ended	6 Months Ended	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 14, 2013	Jun. 30, 2013	Jun. 14, 2013	Jun. 14, 2013
		Stock Option [Member]	Executive [Member]	Executive [Member]
				Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Loan receivable related party forgiven			$531
Shares exercised using loan		546,244		546,244
Incremental compensation expense related to the modification of loan	$508

Segments_Narrative_Details

Segments (Narrative) (Details)	6 Months Ended
	Jun. 30, 2013
	segment
Segment Reporting [Abstract]
Number of reportable segments	1

Segments_Schedule_of_net_sales

Segments (Schedule of net sales, adjusted EBITDA and certain other measures by reportable segment) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$314,653	$246,492	$563,379	$434,431
Gross profit	71,510	55,054	125,300	98,485
Depreciation & Amortization	3,067	3,031	6,026	6,061
Total Assets	349,950	298,299	349,950	298,299	286,012
Operating Segments [Member] | Geographic divisions [Member]
Segment Reporting Information [Line Items]
Net sales	302,666	237,212	541,183	418,020
Gross profit	69,085	52,929	120,618	94,872
Depreciation & Amortization	2,925	2,583	5,548	5,148
Adjusted EBITDA	14,788	7,669	19,372	6,668
Total Assets	320,500	272,865	320,500	272,865
Operating Segments [Member] | Other [Member]
Segment Reporting Information [Line Items]
Net sales	11,987	9,280	22,196	16,411
Gross profit	2,425	2,125	4,682	3,613
Depreciation & Amortization	33	32	65	65
Adjusted EBITDA	397	494	824	373
Total Assets	8,309	5,630	8,309	5,630
Other reconciling items [Member]
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Gross profit	0	0	0	0
Depreciation & Amortization	109	416	413	848
Adjusted EBITDA	-6,159	-5,851	-12,391	-12,386
Total Assets	$21,141	$19,804	$21,141	$19,804

Segments_Reconciliation_of_adj

Segments (Reconciliation of adjusted EBITDA to consolidated financial statements) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting, Revenue Reconciling Item [Line Items]
Net income (loss), as reported	$1,978	($2,237)	($2,079)	($10,803)
Interest expense	1,233	1,085	2,258	2,048
Income tax benefit	966	-1,293	-913	-5,556
Depreciation and amortization	3,067	3,031	6,026	6,061
Income (loss) from discontinued operations, net of tax	-94	128	-251	241
Restructuring expense	39	-23	99	21
Management fees	560	362	966	767
Noncash stock compensation expense	118	352	264	680
Acquisition costs	154	0	257	46
Severance and other expense related to store closures and business optimization	319	560	492	803
Reduction of tax indemnification asset	0	347	0	347
Non-capitalizable expense associated with the initial public offering	686	0	686	0
Other reconciling items [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	109	416	413	848
Adjusted EBITDA	-6,159	-5,851	-12,391	-12,386
Operating Segments [Member] | Geographic divisions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	2,925	2,583	5,548	5,148
Adjusted EBITDA	14,788	7,669	19,372	6,668
Operating Segments [Member] | Other [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Depreciation and amortization	33	32	65	65
Adjusted EBITDA	$397	$494	$824	$373

Income_loss_per_common_share_B

Income (loss) per common share (Basic EPS) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$1,884	($2,109)	($2,330)	($10,562)
Redeemable Class B Senior Preferred stock deemed dividend	-744	-1,122	-1,473	-2,222
Income from continuing operations allocated to participating securities	-279	0
Income (loss) available to common stockholders, from continuing operations	861	-3,231
Income (loss) from discontinued operations, net of tax	94	-128	251	-241
Income from discontinued operations allocated to participating securities	-23	0
Income (loss) available to common stockholders, from discontinued operations	71	-128
Income (loss) available to common stockholders	$932	($3,359)
Weighted average outstanding shares of common stock (shares)	13,750,400	13,178,143	13,637,462	12,937,474
Basic EPS
Income (loss) from continuing operations (dollars per share)	$0.06	($0.24)
Income (loss) from discontinued operations (dollars per share)	$0.01	($0.01)
Basic EPS (dollars per share)	$0.07	($0.25)

Income_loss_per_common_share_D

Income (loss) per common share (Diluted EPS) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$1,884	($2,109)	($2,330)	($10,562)
Redeemable Class B Senior Preferred stock deemed dividend	-744	-1,122	-1,473	-2,222
Income (loss) available to common stockholders, from continuing operations	1,140	-3,231
Income (loss) from discontinued operations, net of tax	94	-128	251	-241
Income (loss) available to common stockholders	$1,234	($3,359)	($3,552)	($18,025)
Weighted average common shares outstanding
Weighted average outstanding shares of common stock (shares)	13,750,400	13,178,143	13,637,462	12,937,474
Redeemable Class C Convertible Preferred stock (shares)	4,454,889	0
Nonvested shares (shares)	565,241	0
Options to purchase common stock (shares)	117,147	0
Weighted average shares and dilutive shares (shares)	18,887,677	13,178,143	13,637,462	12,937,474
Diluted EPS
Income (loss) from continuing operations (dollars per share)	$0.06	($0.24)
Income (loss) from discontinued operations (dollars per share)	$0.01	($0.01)
Diluted EPS (dollars per share)	$0.07	($0.25)

Income_loss_per_common_share_B1

Income (loss) per common share (Basic and Diluted EPS) (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$1,884	($2,109)	($2,330)	($10,562)
Redeemable Class B Senior Preferred stock deemed dividend	-744	-1,122	-1,473	-2,222
Convertible Class C Preferred stock dividends	0	0	0	-5,000
Loss available to common stockholders, from continuing operations			-3,803	-17,784
Income (loss) from discontinued operations, net of tax	94	-128	251	-241
Income (loss) available to common stockholders	$1,234	($3,359)	($3,552)	($18,025)
Weighted average outstanding shares of common stock (shares)			13,637,462	12,937,474
Loss from continuing operations (dollars per share)	$0.06	($0.24)	($0.28)	($1.37)
Income (loss) from discontinued operations (dollars per share)	$0.01	($0.01)	$0.02	($0.02)
Net income (loss) per share (in dollars per share)	$0.07	($0.25)	($0.26)	($1.39)

Income_loss_per_common_share_S

Income (loss) per common share (Schedule of anti-dilutive securities) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Stock option awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	0	1,006,936	575,463	1,006,936
Nonvested stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	0	454,510	226,607	454,510
Convertible Class C Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (shares)	0	4,454,889	4,454,889	4,454,889

Subsequent_events_Details

Subsequent events (Details) (USD $)

3 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2013

Jun. 30, 2012

Aug. 14, 2013

Jul. 29, 2013

Jun. 30, 2013

Dec. 31, 2012

Aug. 14, 2013

Jun. 30, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Aug. 14, 2013

Subsequent Event [Member]

Subsequent Event [Member]

Stock Option [Member]

Stock Option [Member]

Stock Option [Member]

Nonvested Stock [Member]

Nonvested Stock [Member]

Restricted stock units [Member]

One year vesting period [Member]

Two year vesting period [Member]

Three year vesting period [Member]

Three year vesting period [Member]

Four year vesting period [Member]

Four year vesting period [Member]

Debt repayment [Member]

Termination of management services agreement [Member]

Shares Offered By Company [Member]

Shares sold by Gores and other selling stockholders [Member]

Shares purchased by underwriters [Member]

Aggregate shares sold [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Restricted stock units [Member]

Restricted stock units [Member]

Stock Option [Member]

Nonvested Stock [Member]

Stock Option [Member]

Nonvested Stock [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

director

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Line Items]

Stock split ratio

25.972

Stock issued (shares)

7,000,000

4,411,765

2,588,235

1,050,000

8,050,000

Share price (dollars per share)

$14

Proceeds from IPO

$55,191

$46,191

$9,000

Underwriting fees

4,324

IPO expenses

686

0

686

0

2,250

Conversion of preferred stock (shares)

7,191,891

Preferred stock par value (dollars per share)

$0.01

Preferred stock shares authorized (shares)

50,000,000

Preferred stock shares issued (shares)

0

Preferred stock shares outstanding (shares)

0

Common stock, par value (dollars per share)

$0.01

Common stock shares authorized (shares)

300,000,000

Common stock shares issued (shares)

26,107,231

42,858

Common stock, shares, outstanding

26,107,231

Options issued (shares)

0

466,356

Options, excercise price (dollars per share)

$0.97

$0.97

$14

Options, annual vesting shares (shares)

373,854

19,048

92,502

23,810

Unrecognized compensation expense

$3,254

$600

$140

Stock awards issued (shares)

546,244

42,858

10,000

Number of directors receiving award (directors)

2

Annual vesting percentage (percent)

50.00%

50.00%

33.33%

33.33%

33.33%

33.33%