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Contract Liability and Receivable (Tables)
 12 Months Ended
Dec. 31, 2018
Disclosure of revenue from contracts with customers [Abstract]  
Contract liability balances
Our contract liability balance at December 31, which we expect to record in revenue over the next five years, is as follows:
 
2018
2017
Balance, beginning of the year
6,182,580

—

Regional licensing agreement
547,707

6,182,580

Revenue recognized in the year
—

—

Balance, end of the year
6,730,287

6,182,580

 
 
 
Contract liability - current
927,400

1,545,645

Contract liability - non-current
5,802,887

4,636,935

 
6,730,287

6,182,580