Revenue Recognition, Remaining Performance Obligation (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Remaining Performance Obligation [Abstract]
Remaining performance obligations	$ 214
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Remaining Performance Obligation [Abstract]
Remaining performance obligations	$ 163
Expected timing of satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Minimum [Member]
Remaining Performance Obligation [Abstract]
Expected timing of satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Maximum [Member]
Remaining Performance Obligation [Abstract]
Expected timing of satisfaction period	3 years