Stock-Based Compensation - Service Based Stock Options - Others (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)			4,950
Allocated Share-based Compensation Expense	$ 876,413	$ 614,583	$ 3,895,041	$ 2,425,919
Stock option awards - Service based awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)			620,700	190,167
Allocated Share-based Compensation Expense	596,657	$ 427,944	$ 1,795,819	$ 967,377
Unrecognized stock-based compensation expenses	$ 2,100,000		$ 2,100,000

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost to be recognized for option under share-based payment arrangement.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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