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

9 Months Ended

Sep. 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 September 30,				Nine months ended September 30,
	2019		2018		2019		2018
Net sales:
Commercial	$	1,733	$	2,292	$	5,847	$	7,469
Military	1,182		2,866		3,327		7,520
Total net sales	$	2,915	$	5,158	$	9,174	$	14,989

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 September 30,						Nine months ended September 30,
	2019			2018			2019			2018
Numerator:
Net loss	$	(946	)	$	(1,920	)	$	(6,065	)	$	(6,114	)
Denominator:
Basic weighted average common shares outstanding	12,370			12,059			12,278			11,970
Diluted weighted average shares	12,370			12,059			12,278			11,970

Schedule of warranty activity

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

	Three months ended September 30,						Nine months ended September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	342		$	196		$	258		$	174
Warranty accruals for current period sales	5			31			34			46
Adjustments to existing warranties	—			47			77			101
In kind settlements made during the period	(4		)	(14		)	(26		)	(61		)
Accrued warranty reserve	$	343		$	260		$	343		$	260