Organization and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Net Sales by Geographic Area

For the three and nine months ended September 30, 2016 and 2015, net sales by geographic area were as follows (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2016				2015				2016				2015
United States	$	60,558	84.2	%	$	43,689	86.7	%	$	155,245	83.4	%	$	117,885	83.1	%
Other Countries	11,324		15.8		6,687		13.3		30,923		16.6		23,966		16.9
Total	$	71,882	100.0	%	$	50,376	100.0	%	$	186,168	100.0	%	$	141,851	100.0	%

Weighted Average Number of Shares Outstanding and Income Per Share

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2016		2015		2016		2015
Numerator for basic and diluted earnings per share:
Net income	$	3,843	$	1,521	$	10,956	$	14,829
Denominator:
Weighted average shares outstanding - basic	52,206		53,709		52,791		53,509
Dilutive effect of stock-based awards	935		982		865		1,162
Diluted weighted average shares outstanding	53,141		54,691		53,656		54,671
Anti-dilutive stock-based awards excluded	227		160		304		160
Net income per common share:
Basic	$	0.07	$	0.03	$	0.21	$	0.28
Diluted	$	0.07	$	0.03	$	0.20	$	0.27

Summary of Changes in Estimated Product Warranty Liabilities

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

	Nine Months Ended September 30,
	2016			2015
Balance, beginning of period	$	314		$	675
Utilization of accrual	(97		)	(293		)
Warranty expense	531			19
Balance, end of period	$	748		$	401