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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Schedule of Cash, Cash Equivalents and Restricted Cash | The following table provides a reconciliation of cash, cash equivalents and restricted cash as reported within the consolidated balance sheet that sum to the total of the same such amounts shown in the statement of cash flows.
|  | For the years ended December 31, |
(thousands of dollars) |  | 2017 |  |  | 2016 |
Cash and cash equivalents |  | $ | 4,054 |  |  | $ | 3,309 |
Restricted cash - pledged deposits for performance bonds |  |  | 3,668 |  |  |  | 3,964 |
Cash, cash equivalents and restricted cash shown in the statement of cash flows |  | $ | 7,722 |  |  | $ | 7,273 |
Schedule of Financial Instruments Recognized at Fair Value on Recurring Basis | The following table presents information about financial instruments recognized at fair value on a recurring basis as of December 31, 2017 and 2016, and indicates the fair value hierarchy:
|  | December 31, 2017 |
(thousands of dollars) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Current Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term available-for-sale investments |  | $ | 1,361 |  |  | $ | - |  |  | $ | - |  |  | $ | 1,361 |
Total current assets recorded at fair value |  | $ | 1,361 |  |  | $ | - |  |  | $ | - |  |  | $ | 1,361 |
Non-current Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  | $ | 3,668 |  |  | $ | - |  |  |  | - |  |  | $ | 3,668 |
Total non-current assets recorded at fair value |  | $ | 3,668 |  |  | $ | - |  |  | $ | - |  |  | $ | 3,668 |
|  | December 31, 2016 |
(thousands of dollars) |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Non-current Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted cash |  |  | 3,964 |  |  |  | - |  |  |  | - |  |  |  | 3,964 |
Total assets recorded at fair value |  | $ | 3,964 |  |  | $ | - |  |  | $ | - |  |  | $ | 3,964 |

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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