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

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Disaggregation of revenue

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

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
Net sales:
Commercial	$	2,131	$	2,972	$	4,114	$	5,177
Military	951		2,200		2,145		4,654
Total net sales	$	3,082	$	5,172	$	6,259	$	9,831

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 June 30,						Six months ended June 30,
	2019			2018			2019			2018
Numerator:
Net loss	$	(2,254	)	$	(1,804	)	$	(5,119	)	$	(4,194	)
Denominator:
Basic weighted average common shares outstanding	12,336			11,949			12,231			11,925
Potential common shares from equity awards and warrants	—			—			—			—
Diluted weighted average shares	12,336			11,949			12,231			11,925

Schedule of warranty activity

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

	Three months ended June 30,						Six months ended June 30,
	2019			2018			2019			2018
Balance at beginning of period	$	352		$	141		$	258		$	174
Warranty accruals for current period sales	17			7			29			15
Adjustments to existing warranties	(12		)	55			77			54
In kind settlements made during the period	(15		)	(7		)	(22		)	(47		)
Accrued warranty reserve	$	342		$	196		$	342		$	196