Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Changes in Estimated Product Warranty Liabilities

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

	2017			2016			2015
Balance, January 1	$	780		$	314		$	675
Utilization of reserve	(245		)	(155		)	(299		)
Warranty expense (recoveries)	109			621			(62		)
Balance, December 31	$	644		$	780		$	314

Net Sales by Geographic Area

For the years ended December 31, 2017, 2016 and 2015, net sales by geographic area as well as the percentage relationship to total net sales included in the accompanying statements of operations were as follows (in thousands):

	Year Ended December 31,
	2017				2016				2015
United States	$	282,810	82.3	%	$	218,757	81.6	%	$	161,803	81.8	%
Other Countries	60,988		17.7		49,488		18.4		36,089		18.2
Total	$	343,798	100.0	%	$	268,245	100.0	%	$	197,892	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):

	For the Year Ended December 31,
	2017		2016		2015
Numerator for basic and diluted earnings per share:
Net income	$	5,207	$	17,297	$	19,933
Denominator:
Weighted average shares outstanding—basic	52,726		52,667		53,548
Dilutive effect of stock-based awards	1,172		869		1,090
Diluted weighted average shares outstanding	53,898		53,536		54,638
Anti-dilutive stock-based awards excluded	386		443		198
Net income per common share:
Basic	$	0.10	$	0.33	$	0.37
Diluted	$	0.10	$	0.32	$	0.36