Annual report pursuant to Section 13 and 15(d)

Investments - Summary of Investments (Details)

v3.19.1
Investments - Summary of Investments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Investments [Roll Forward]      
Beginning Balance $ 2,618    
Ending Balance 3,518 $ 2,618  
Venture Capital Fund      
Investments [Roll Forward]      
Beginning Balance 2,618 2,745 $ 2,195
Investment made during period 900   550
Cash distribution during 2017   (127)  
Ending Balance $ 3,518 $ 2,618 $ 2,745