Description of Business and Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2015
Description of Business and Summary of Significant Accounting Policies  
Schedule of revenue from United States, Canada and all other international dealers and distributors combined

The following table sets forth revenue from the U.S., Canadian and all other international dealers and distributors combined (in thousands):

 

 

 

Three Months Ended
March 31,

 

 

 

2014

 

2015

 

Revenue-United States

 

$
21,043 

 

$
21,217 

 

Revenue-Canada

 
3,230 

 
3,086 

 

Revenue-all other international sources

 
7,582 

 
7,780 

 

Total revenue

 

$
31,855 

 

$
32,083 

 

 

 

 

 

 

 

International revenue (excluding Canada) as a percent of total revenue

 
24 

%
24 

%

 

Schedule of changes in the product warranty liability

 

The following table presents the changes in the product warranty liability (in thousands):

                                                                                                                                                                                                                

 

 

Warranty Liability

 

Balance at December 31, 2014

 

$
1,191

 

Warranty costs accrued

 
750

 

Warranty claims

 
(612

)

Balance at March 31, 2015

 

$
1,329

 

 

Schedule of reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share

 

The following table presents the reconciliation of the numerator and denominator used in the calculation of basic and diluted net loss per share (in thousands):

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2014

 

2015

 

Numerator:

 

 

 

 

 

Net loss

 

$
(539

)

$
(4,231

)

Denominator:

 

 

 

 

 

Weighted average common stock outstanding for basic net loss per common share

 
23,117

 
24,344

 

Effect of dilutive securities—stock options

 

—

 

—

 

Weighted average common shares and dilutive securities outstanding

 
23,117

 
24,344

 

 

Schedule of anti-dilutive weighted-average common stock equivalents excluded from the calculation of diluted net loss per share

 

The following weighted-average common stock equivalents were anti-dilutive and therefore were excluded from the calculation of diluted net loss per share (in thousands):

 

 

 

Three Months Ended

 

 

 

March 31,

 

 

 

2014

 

2015

 

Options to purchase common stock

 
4,853 

 
4,815