Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other countries less than 5% of revenues	$ 12,657	$ 12,683
Total Revenues	39,169	43,594
Italy [Member]
Total Revenues	2,074	1,482
Unites States [Member]
Total Revenues	22,038	26,192
Germany [Member]
Total Revenues	$ 2,400	$ 3,237