Allowance for Doubtful Accounts - Age Analysis of Past-Due Note Receivable (Details) $ in Thousands	Mar. 31, 2020 USD ($)
Financing Receivable, Past Due [Line Items]
Notes Receivable	$ 10,678
0-90 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	1,676
91 - 180 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	1,063
Greater than 181 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	7,939
Standard note receivable
Financing Receivable, Past Due [Line Items]
Notes Receivable	3,943
Standard note receivable | 0-90 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	872
Standard note receivable | 91 - 180 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	531
Standard note receivable | Greater than 181 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	2,540
Elevated risk note receivable
Financing Receivable, Past Due [Line Items]
Notes Receivable	6,735
Elevated risk note receivable | 0-90 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	804
Elevated risk note receivable | 91 - 180 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	532
Elevated risk note receivable | Greater than 181 Days
Financing Receivable, Past Due [Line Items]
Notes Receivable	$ 5,399