XML 48 R35.htm IDEA: XBRL DOCUMENT v3.19.2
Note 3 - Restricted Cash - Schedule of Restricted Cash and Cash Equivalents (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Jun. 30, 2018
Dec. 31, 2017
Restricted cash $ 706,317 $ 1,038,767 $ 506,046  
Cash and cash equivalents 11,656,150 17,105,072 88,166,783  
Total Cash, Cash Equivalents, and Restricted Cash as Presented in the Consolidated Statements of Cash Flows 12,362,467 18,143,839 $ 88,672,829 $ 7,230,570
Insurance Premium Escrow [Member]        
Restricted cash $ 706,317 $ 1,038,767