Assets for Lease, net - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Assets for Lease, net
Lease revenue	$ 8,548	$ 7,618	$ 16,437	$ 14,812
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Revenues	Revenues	Revenues	Revenues
Depreciation expense	$ 103	$ 110	$ 212	$ 223
Reduction to accumulated depreciation for returned items	57	50	147	191
Loss on disposal of assets for lease	$ (141)	$ (41)	$ (215)	$ (124)