Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table presents a reconciliation of basic and diluted loss per share computations (in thousands, except per share amounts): 

	For the years ended December 31,
	2019			2018			2017
Numerator:
Net loss	$	(7,373	)	$	(9,111	)	$	(11,267	)
Denominator:
Basic and diluted weighted average common shares outstanding	12,309			11,997			11,806

Schedule of Warranty Activity

	At December 31,
	2019			2018
Balance at the beginning of the year	$	258		$	174
Accruals for warranties issued	78			51
Adjustments to existing warranties	(91		)	103
Settlements made during the year (in kind)	(50		)	(70		)
Accrued warranty expense	$	195		$	258