XML 32 R81.htm IDEA: XBRL DOCUMENT v2.4.1.9
Equity and Redeemable Securities (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Aug. 14, 2013
Class of Stock [Line Items]        
Common stock, par value (in dollars per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 300,000,000us-gaap_CommonStockSharesAuthorized 300,000,000us-gaap_CommonStockSharesAuthorized   300,000,000us-gaap_CommonStockSharesAuthorized
Preferred stock, par value (in dollars per share) $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare   $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized (in shares) 50,000,000us-gaap_PreferredStockSharesAuthorized 50,000,000us-gaap_PreferredStockSharesAuthorized   50,000,000us-gaap_PreferredStockSharesAuthorized
Beneficial conversion feature on Convertible Class C Preferred stock $ 0stck_TemporaryEquityConvertibleBeneficialConversionFeature $ 0stck_TemporaryEquityConvertibleBeneficialConversionFeature $ 5,000,000stck_TemporaryEquityConvertibleBeneficialConversionFeature  
Recognition of beneficial conversion feature on Convertible Class C Preferred stock     5,000,000stck_AdjustmentsToAdditionalPaidInCapitalConvertiblePreferredStockWithBeneficialConversionFeature  
Preferred stock, shares issued (in shares) 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued    
Preferred stock, shares outstanding (in shares) 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding    
Common stock, shares issued (in shares) 26,176,056us-gaap_CommonStockSharesIssued 26,112,007us-gaap_CommonStockSharesIssued    
Common stock, shares outstanding (in shares) 26,176,056us-gaap_CommonStockSharesOutstanding 26,112,007us-gaap_CommonStockSharesOutstanding    
Redeemable Class A Junior Preferred Stock [Member]        
Class of Stock [Line Items]        
Preferred shares, par value (in dollars per share)     $ 0.01us-gaap_TemporaryEquityParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		  
Date from which preferred shares are exercisable     Jul. 31, 2012  
Preferred shares, liquidation preference (in dollars per share)     $ 1.00us-gaap_TemporaryEquityLiquidationPreferencePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		  
Redeemable Class B Senior Preferred Stock [Member]        
Class of Stock [Line Items]        
Preferred shares, par value (in dollars per share)     $ 0.01us-gaap_TemporaryEquityParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Date from which preferred shares are exercisable     May 05, 2011  
Preferred shares, liquidation preference (in dollars per share)     $ 1,000us-gaap_TemporaryEquityLiquidationPreferencePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Preferred shares, dividend rate     8.00%stck_TemporaryEquityDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Preferred shares, dividends earned but not declared or paid     100,000stck_TemporaryEquityDividendsEarnedButNotDeclaredorPaid
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Class C Convertible Preferred Stock [Member]        
Class of Stock [Line Items]        
Preferred shares, number of securities called by rights (in shares)     4,454,889us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember		  
Preferred shares, exercise price of rights (in dollars per share)     $ 1.1223625us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember		  
Beneficial conversion feature on Convertible Class C Preferred stock     5,000,000stck_TemporaryEquityConvertibleBeneficialConversionFeature
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember		  
Recognition of beneficial conversion feature on Convertible Class C Preferred stock     $ 5,000,000stck_AdjustmentsToAdditionalPaidInCapitalConvertiblePreferredStockWithBeneficialConversionFeature
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember		  
Convertible preferred beneficial conversion feature (in dollars on share)     $ 0.38stck_ChangeInEarningsPerShareConvertiblePreferredBeneficialConversionFeature
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember		  
Class A Voting common stock [Member]        
Class of Stock [Line Items]        
Common stock, par value (in dollars per share)   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		    
Common stock, fair value per share (in dollars per share)     $ 2.25stck_CommonStockFairValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		  
Class B Nonvoting common stock [Member]        
Class of Stock [Line Items]        
Common stock, par value (in dollars per share)   $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember