Organization and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Net Sales by Geographic Area

For the three months ended March 31, 2015 and 2014, net sales by geographic area were as follows (in thousands):

	Three Months Ended March 31,
	2015				2014
United States	$	35,501	79.3	%	$	25,576	70.7	%
Other Countries	9,261		20.7		10,609		29.3
Total	$	44,762	100.0	%	$	36,185	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,
	2015		2014
Numerator for basic and diluted earnings per share:
Net income	$	7,205	$	3,391
Denominator:
Weighted average shares outstanding—basic	53,167		53,190
Dilutive effect of stock-based awards	1,346		1,934
Diluted weighted average shares outstanding	54,513		55,124
Anti-dilutive stock-based awards excluded	362		315
Net income per common share:
Basic	$	0.14	$	0.06
Diluted	$	0.13	$	0.06

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,
	2015			2014
Balance, beginning of period	$	675		$	955
Utilization of accrual	(118		)	(174		)
Warranty (recovery) expense	(34		)	306
Balance, end of period	$	523		$	1,087