Basis of Presentation and Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

The following table provides a disaggregation of product net sales for the periods presented (in thousands):



	Three months ended March 31,
	2019		2018
Net sales:
Commercial	1,983		2,205
Military	1,194		2,454
Total net sales	$	3,177	$	4,659

Reconciliation of basic and diluted income (loss) per share

The following is a reconciliation of the numerator and denominator of the basic and diluted net loss per share computations for the periods presented below (in thousands):



	Three months ended March 31,
	2019			2018
Numerator:
Net loss	$	(2,865	)	$	(2,390	)

Denominator:
Basic weighted average common shares outstanding	12,126			11,900
Potential common shares from equity awards and warrants	—			—
Diluted weighted average shares	12,126			11,900

Schedule of warranty activity

The following table summarizes warranty activity for the periods presented (in thousands):



	Three months ended March 31,
	2019			2018
Balance at beginning of period	$	258		$	174
Warranty accruals for current period sales	12			8
Adjustments to existing warranties	89			(1		)
In kind settlements made during the period	(7		)	(40		)
Accrued warranty reserve	$	352		$	141