Fair Value (Details) Unobservable - USD ($) | Sep. 30, 2020 | Dec. 31, 2019 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Restricted Cash | $ 1,400,000 | $ 1,400,000 |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 5,038,000 | 4,323,000 |
Noncontrolling Interest in Variable Interest Entity | 7,625,000 | 7,625,000 |
Assets, Fair Value Disclosure | 15,116,000 | 14,398,000 |
Notes Receivable, Fair Value Disclosure | 5,900,000 | 6,100,000 |
Fair Value, Inputs, Level 1 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Noncontrolling Interest in Variable Interest Entity | 0 | 0 |
Assets, Fair Value Disclosure | 6,490,000 | 5,773,000 |
Fair Value, Inputs, Level 2 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Noncontrolling Interest in Variable Interest Entity | 0 | 0 |
Assets, Fair Value Disclosure | 1,001,000 | 1,000,000 |
Fair Value, Inputs, Level 3 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Noncontrolling Interest in Variable Interest Entity | 7,625,000 | 7,625,000 |
Assets, Fair Value Disclosure | 7,625,000 | 7,625,000 |
Cash and Cash Equivalents [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Restricted Cash | 1,400,000 | 1,400,000 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Restricted Cash | 1,400,000 | 1,400,000 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Restricted Cash | 0 | 0 |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Restricted Cash | 0 | 0 |
Deposits [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 4,037,000 | 3,323,000 |
Cash and Cash Equivalents, Fair Value Disclosure | 1,053,000 | 1,050,000 |
Deposits [Member] | Fair Value, Inputs, Level 1 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 4,037,000 | 3,323,000 |
Cash and Cash Equivalents, Fair Value Disclosure | 1,053,000 | 1,050,000 |
Deposits [Member] | Fair Value, Inputs, Level 2 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 0 | 0 |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0 |
Deposits [Member] | Fair Value, Inputs, Level 3 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 0 | 0 |
Cash and Cash Equivalents, Fair Value Disclosure | 0 | 0 |
Municipal bond | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 1,001,000 | 1,000,000 |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value | 1,001,000 | 1,000,000 |
Municipal bond | Fair Value, Inputs, Level 1 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value | 0 | 0 |
Municipal bond | Fair Value, Inputs, Level 2 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value | 1,001,000 | 1,000,000 |
Municipal bond | Fair Value, Inputs, Level 3 [Member] | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | |
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value | $ 0 | $ 0 |