Financing Receivables - Analysis of Age of Financing Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Total Past Due
Financing Receivable, Past Due [Line Items]
Long-term financing arrangements, gross	$ 864	$ 2,169
1 to 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Long-term financing arrangements, gross	713	1,270
91 to 180 Days Past Due
Financing Receivable, Past Due [Line Items]
Long-term financing arrangements, gross	78	227
181 + Days Past Due
Financing Receivable, Past Due [Line Items]
Long-term financing arrangements, gross	$ 73	$ 672