Organization and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Net Sales by Geographic Area

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

	Three Months Ended June 30,								Six Months Ended June 30,
	2016				2015				2016				2015
United States	$	52,219	88.9	%	$	38,695	82.8	%	$	94,687	82.9	%	$	74,196	81.1	%
Other Countries	6,537		11.1		8,018		17.2		19,599		17.1		17,279		18.9
Total	$	58,756	100.0	%	$	46,713	100.0	%	$	114,286	100.0	%	$	91,475	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 June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Numerator for basic and diluted earnings per share:
Net income	$	3,650	$	6,103	$	7,113	$	13,308
Denominator:
Weighted average shares outstanding - basic	52,480		53,644		53,087		53,407
Dilutive effect of stock-based awards	809		1,156		803		1,255
Diluted weighted average shares outstanding	53,289		54,800		53,890		54,662
Anti-dilutive stock-based awards excluded	369		153		520		173
Net income per common share:
Basic	$	0.07	$	0.11	$	0.13	$	0.25
Diluted	$	0.07	$	0.11	$	0.13	$	0.24

Summary of Changes in Estimated Product Warranty Liabilities

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

	Six Months Ended June 30,
	2016			2015
Balance, beginning of period	$	314		$	675
Utilization of accrual	(49		)	(200		)
Warranty expense	520			(19		)
Balance, end of period	$	785		$	456