Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Changes in fair value (Details)

v3.19.3
Fair Value Measurements - Changes in fair value (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2019
USD ($)
Fair value of investment $ 11,193
Balance 11,193
Caelum [Member]  
Balance 10,905
Conversion of convertible notes (9,914)
Issuance of warrant (991)
Fair value of investment 11,193
Balance 11,193
Warrants [Member] | Caelum [Member]  
Balance 991
Issuance of warrant (991)
Caelum Convertible Notes [Member] | Caelum [Member]  
Balance 9,914
Conversion of convertible notes (9,914)
Balance $ 0