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Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Statement Of Cash Flows [Abstract]    
Cash and cash equivalents $ 42,308,153 $ 32,001,925
Restricted cash 877,828 1,266,686
Total cash, cash equivalents and restricted cash $ 43,185,981 $ 33,268,611