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VARIABLE INTEREST ENTITIES AND EQUITY INVESTMENTS AND ADVANCES (Tables) | 12 Months Ended
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Dec. 31, 2019
Equity Method Investments and Joint Ventures [Abstract] |
Schedule of Equity Method Investments | Summarized financial information for the Company’s equity investments and advances in Dart as of December 31, 2018 and for the years ended December 31, 2018 and 2017 was as follows (in thousands):
|  | 2018 |  |
Current assets |  | $ | 31,332 |  |  |
Non-current assets |  | 30,613 |  |  |
Current liabilities |  | 7,007 |  |  |
Non-current liabilities |  | 5,558 |  |  |
|  | 2018 |  | 2017
Operating revenues |  | $ | 45,602 |  |  | $ | 42,891 |
Costs and expenses: |  |  |  |
Operating and administrative |  | 36,592 |  |  | 35,983 |
Depreciation and amortization |  | 1,754 |  |  | 1,603 |
Total costs and expenses |  | 38,346 |  |  | 37,586 |
Operating income |  | $ | 7,256 |  |  | $ | 5,305 |
Net income |  | $ | 4,912 |  |  | $ | 3,603 |
Summarized financial information for the Company’s equity investments and advances in all other investees for the years ended December 31, 2018 and 2017 was as follows (in thousands):
|  | 2018 |  | 2017
Operating revenues |  | $ | 170 |  |  | $ | 581 |
Costs and expenses: |  |  |  |
Operating and administrative |  | 63 |  |  | 367 |
Depreciation and amortization |  | 377 |  |  | 503 |
Total costs and expenses |  | 440 |  |  | 870 |
Operating income |  | $ | (270 | ) |  | $ | (289 | )
Net income (loss) |  | $ | (442 | ) |  | $ | (527 | )
As of December 31, 2018, cumulative undistributed net earnings of equity investees included in the Company’s consolidated retained earnings was $6.0 million.

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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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