Organization and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Weighted Average Number of Shares Outstanding and Income Per Share

	Three Months Ended March 31,
	2020		2019
Numerator for basic and diluted earnings per share:
Net income	$	4,074	$	6,419
Denominator:
Weighted average shares outstanding		59,609		58,914
Dilutive effect of stock-based awards		785		837
Diluted weighted average shares outstanding		60,394		59,751
Anti-dilutive stock-based awards excluded		12,161		12,125
Net income per common share:
Basic	$	0.07	$	0.11
Diluted	$	0.07	$	0.11

Summary of Changes in Estimated Product Warranty Liabilities

Changes in our estimated product warranty liabilities were as follows (in thousands):

	Three Months Ended March 31,
	2020		2019
Balance, beginning of period	$	1,476	$	898
Utilization of reserve		(171)		(123)
Warranty expense (benefit)		(85)		252
Balance, end of period	$	1,220	$	1,027