Organization and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Net Sales by Geographic Area

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

	Three Months Ended June 30,								Six Months Ended June 30,
	2017				2016				2017				2016
United States	$	66,200	83.1	%	$	52,219	88.9	%	$	130,952	82.4	%	$	94,687	82.9	%
Other Countries	13,443		16.9		6,537		11.1		27,933		17.6		19,599		17.1
Total	$	79,643	100.0	%	$	58,756	100.0	%	$	158,885	100.0	%	$	114,286	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,
	2017		2016		2017		2016
Numerator for basic and diluted earnings per share:
Net income	$	2,276	$	3,650	$	6,856	$	7,113
Denominator:
Weighted average shares outstanding - basic	52,736		52,480		52,578		53,087
Dilutive effect of stock-based awards	1,034		809		1,145		803
Diluted weighted average shares outstanding	53,770		53,289		53,723		53,890
Anti-dilutive stock-based awards excluded	544		369		690		520
Net income per common share:
Basic	$	0.04	$	0.07	$	0.13	$	0.13
Diluted	$	0.04	$	0.07	$	0.13	$	0.13

Summary of Changes in Estimated Product Warranty Liabilities

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

	Six Months Ended June 30,
	2017			2016
Balance, beginning of period	$	780		$	314
Utilization of accrual	(120		)	(49		)
Warranty expense (recoveries)	(96		)	520
Balance, end of period	$	564		$	785