Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Changes in Estimated Product Warranty Liabilities

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

	2014			2013			2012
Balance, January 1	$	955		$	484		$	427
Utilization of accrual	(676		)	(530		)	(470		)
Warranty expense	396			1,001			527
Balance, December 31	$	675		$	955		$	484

Net Sales by Geographic Area

For the three years ended December 31, 2014, 2013 and 2012, net sales by geographic area were as follows (in thousands):

	Year Ended December 31,
	2014				2013				2012
United States	$	132,205	80.4	%	$	115,674	83.9	%	$	93,427	81.4	%
Other Countries	32,320		19.6		22,157		16.1		21,326		18.6
Total	$	164,525	100.0	%	$	137,831	100.0	%	$	114,753	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,
	2014		2013		2012
Numerator for basic and diluted earnings per share:
Net income	$	19,918	$	18,244	$	14,738
Denominator:
Weighted average shares outstanding—basic	52,948		51,880		53,827
Dilutive effect of stock-based awards	1,552		2,272		896
Diluted weighted average shares outstanding	54,500		54,152		54,723
Anti-dilutive stock-based awards excluded	177		507		3,205
Net income per common share:
Basic	$	0.38	$	0.35	$	0.27
Diluted	$	0.37	$	0.34	$	0.27