Organization and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2014

Accounting Policies [Abstract]

Net Sales by Geographic Area

For the three months ended March 31, 2014 and 2013, net sales by geographic area were as follows:

	Three Months Ended March 31,
	2014				2013
United States	$	25,576	71	%	$	27,314	90	%
Other Countries		10,609	29			3,120	10
Total	$	36,185	100	%	$	30,434	100	%

Weighted Average Number of Shares Outstanding and Income Per Share

The calculation of the weighted average number of shares outstanding and income per share are as follows (in thousands except per share data):

	Three Months Ended March 31,
	2014		2013
Numerator for basic and diluted earnings per share:
Net income	$	3,391	$	3,298
Denominator:
Weighted average shares outstanding—basic		53,190		52,746
Dilutive effect of stock-based awards		1,934		1,854
Diluted weighted average shares outstanding		55,124		54,600
Anti-dilutive stock-based awards excluded		315		1,232
Net income per common share:
Basic	$	0.06	$	0.06
Diluted	$	0.06	$	0.06

Summary of Changes in Estimated Product Warranty Liabilities

Changes in the Company’s estimated product warranty liabilities are as follows (in thousands):

	Three Months Ended March 31,
	2014			2013
Balance, January 1,	$	955		$	484
Utilization of accrual		(174	)		(157	)
Warranty expense		306			169
Balance, March 31,	$	1,087		$	496