| Fair Value Measurements - Change in Level 2 Assets (Details) - Fair Value, Measurements, Recurring - Level 2 | 9 Months Ended | 
|---|---|
| Sep. 30, 2019  USD ($) | |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
| Fair value, beginning | $ 236,167 | 
| Unrealized loss included in net income for the six months ended June 30, 2019 | (19,680) | 
| Fair value, ending | $ 216,487 | 
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- Definition Amount of equity securities categorized neither as held-to-maturity nor as trading. No definition available. 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Amount of unrealized gain (loss) on investment in marketable security. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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