Product Warranties (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Product Warranties (Textual) [Abstract]
Current portions of warranty reserve	$ 88	$ 120
Non-current portions of the warranty reserve	$ 42	$ 40
IBW [Member] | Minimum [Member]
Product Warranties (Textual) [Abstract]
Standard Product Warranty Description	P1Y
IBW [Member] | Maximum [Member]
Product Warranties (Textual) [Abstract]
Standard Product Warranty Description	P5Y
ISM [Member]
Product Warranties (Textual) [Abstract]
Standard Product Warranty Description	P1Y
CNS [Member] | Minimum [Member]
Product Warranties (Textual) [Abstract]
Standard Product Warranty Description	P1Y
CNS [Member] | Maximum [Member]
Product Warranties (Textual) [Abstract]
Standard Product Warranty Description	P7Y