Organization and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Net Sales by Geographic Area

For the three months ended March 31, 2017 and 2016, net sales by geographic area were as follows (in thousands):

	Three Months Ended March 31,
	2017				2016
United States	$	64,752	81.7	%	$	42,468	76.5	%
Other Countries	14,490		18.3		13,062		23.5
Total	$	79,242	100.0	%	$	55,530	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 March 31,
	2017		2016
Numerator for basic and diluted earnings per share:
Net income	$	4,580	$	3,463
Denominator:
Weighted average shares outstanding - basic	52,418		53,693
Dilutive effect of stock-based awards (a)	1,259		1,096
Diluted weighted average shares outstanding	53,677		54,789
Anti-dilutive stock-based awards excluded	676		525
Net income per common share:
Basic	$	0.09	$	0.06
Diluted	$	0.09	$	0.06

^(a) Prior-period information has been restated for the adoption of ASU 2016-09, which the Company adopted on January 1, 2017, resulting in an increased dilutive effect of restricted stock units. 

Summary of Changes in Estimated Product Warranty Liabilities

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

	Three Months Ended March 31,
	2017			2016
Balance, beginning of period	$	780		$	314
Utilization of accrual	(66		)	(26		)
Warranty expense (recoveries)	(367		)	161
Balance, end of period	$	347		$	449