Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2020

Revenue Recognition [Abstract]

Summary of revenue performance obligations

The following is a summary of our revenue performance obligations:

	Three Months Ended March 31, 2020				Three Months Ended March 31, 2019
(In thousands except percentages)	Revenues		Percent of Revenues		Revenues		Percent of Revenues
Revenue recognized over time	$	193	1	%	$	346	2	%
Revenue recognized at a point in time		16,236	99	%		14,630	98	%
	$	16,429	100	%	$	14,976	100	%

Summary of contract assets and contract liabilities

The following summarizes our contract assets and contract liabilities:    

(In thousands)	March 31, 2020		December 31, 2019
Contract assets, included in other current assets	$	27	$	2
Contract liabilities - advance customer payments	$	406	$	389
Contract liabilities - deferred warranty revenue	$	309	$	275

Summary of the amounts reclassified from beginning contract liabilities to revenue

The following summarizes the amounts reclassified from beginning contract liabilities to revenue:

	Three Months Ended March 31,
(In thousands)	2020		2019
Amounts reclassified from beginning contract liabilities to revenue	$	76	$	30
Amounts reclassified from deferred warranty revenue		100		114
Total	$	176	$	144

7