Debt - Monoprice 2013 Credit Facility - Additional Information (Detail) (Monoprice Inc, USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Nov. 22, 2013
Debt Instrument [Line Items]      
Agreement date Nov. 22, 2013    
Maturity date of credit facility Nov. 22, 2018    
Principal amount     $ 50,000,000.0
Repayment activities 14,000,000 8,000,000  
Minimum credit facility aggregate principal amount due 1,000,000.0    
Periodic payment, principal multiple 1,000,000.0    
Minimum
     
Debt Instrument [Line Items]      
Variable interest rate 1.75%    
Minimum | London Interbank Offered Rate (LIBOR)
     
Debt Instrument [Line Items]      
Variable interest rate 2.75%    
Maximum
     
Debt Instrument [Line Items]      
Variable interest rate 2.25%    
Maximum | London Interbank Offered Rate (LIBOR)
     
Debt Instrument [Line Items]      
Variable interest rate 3.25%    
Revolver Under Credit Facility
     
Debt Instrument [Line Items]      
Credit facility     30,000,000.0
Letter of Credit
     
Debt Instrument [Line Items]      
Credit facility     5,000,000.0
Term Loan
     
Debt Instrument [Line Items]      
Credit facility     40,000,000.0
Swing Line Loans
     
Debt Instrument [Line Items]      
Credit facility     5,000,000.0
Minimum credit facility aggregate principal amount due 100,000.0    
Periodic payment, principal multiple $ 100,000.0