Organization and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Net Sales by Geographic Area

For the three and nine months ended September 30, 2017 and 2016, net sales by geographic area were as follows (in thousands):

	Three Months Ended September 30,								Nine Months Ended September 30,
	2017				2016				2017				2016
United States	$	73,203	81.1	%	$	60,558	84.2	%	$	204,155	81.9	%	$	155,245	83.4	%
Other Countries	17,059		18.9		11,324		15.8		44,992		18.1		30,923		16.6
Total	$	90,262	100.0	%	$	71,882	100.0	%	$	249,147	100.0	%	$	186,168	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,
	2017		2016		2017		2016
Numerator for basic and diluted earnings per share:
Net income	$	422	$	3,843	$	7,278	$	10,956
Denominator:
Weighted average shares outstanding - basic	52,831		52,206		52,663		52,791
Dilutive effect of stock-based awards	1,012		935		1,099		865
Diluted weighted average shares outstanding	53,843		53,141		53,762		53,656
Anti-dilutive stock-based awards excluded	575		227		506		304
Net income per common share:
Basic	$	0.01	$	0.07	$	0.14	$	0.21
Diluted	$	0.01	$	0.07	$	0.14	$	0.20

Summary of Changes in Estimated Product Warranty Liabilities

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

	Nine Months Ended September 30,
	2017			2016
Balance, beginning of period	$	780		$	314
Utilization of accrual	(178		)	(97		)
Warranty expense	117			531
Balance, end of period	$	719		$	748