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Equity method investment (Tables)
12 Months Ended
Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract]  
Equity Method Investments
The following summary of BHG's financial position and results of operations as of and for the years ended December 31, 2019 and 2018, respectively, are presented as unaudited due to BHG's fiscal year end being September 30 (unaudited, in thousands):

Banker's Healthcare Group  
 December 31, 2019December 31, 2018
Assets$840,398  $459,816  
Liabilities$641,037  $324,211  
Equity interests199,361  135,605  
Total liabilities and equity$840,398  $459,816  

 For the year ended December 31,
 201920182017
Revenues$366,500  $220,253  $160,209  
Net income, pre-tax$182,462  $104,297  $77,941