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Equity method investment (Tables) | 6 Months Ended
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Jun. 30, 2018
Equity Method Investments and Joint Ventures [Abstract] |
Equity Method Investments | A summary of BHG's financial position as of June 30, 2018 and December 31, 2017 and results of operations as of and for the three and six months ended June 30, 2018 and 2017, were as follows (in thousands):
| As of
| June 30, 2018 |  | December 31, 2017
Assets | $ | 353,362 |  |  | $ | 330,030 |
Liabilities | 248,881 |  |  | 224,837 |
Membership interests | 104,481 |  |  | 105,193 |
Total liabilities and membership interests | $ | 353,362 |  |  | $ | 330,030 |
| For the three months ended June 30, |  | For the six months ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Revenues | $ | 49,053 |  |  | $ | 37,012 |  |  | $ | 92,804 |  |  | $ | 71,247 |
Net income | $ | 19,102 |  |  | $ | 18,013 |  |  | $ | 38,106 |  |  | $ | 34,024 |

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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