Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 275	$ 25
Temporary equity, par value	$ 0.01	$ 0.01
Temporary equity, shares authorized	5,000,000	5,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	4,055,454	3,932,370
Common stock, shares outstanding	4,036,595	3,920,589
Treasury stock, shares	18,859	11,781
Series A [Member]
Temporary equity, shares issued	270	270
Temporary equity, shares outstanding	270	270
Series B [Member]
Temporary equity, shares issued	47,000	47,000
Temporary equity, shares outstanding	47,000	47,000

Amount of allowance for credit loss on accounts receivable, classified as current.

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