XML 43 R32.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Investments in Preferred Stock (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2017
Investment in Preferred Stock [Abstract] |
Schedule of Changes in Level 3 Investments | The following table summarizes the changes in the Level 3 investments in preferred stock during the six months ended June 30, 2017.
| Six Months Ended June 30, 2017
Beginning balance | $ | 129,545 |
Purchase of preferred stock | 766 |
Dividend income from investments in preferred stock | 7,980 |
Unrealized appreciation in the fair value of the investments in preferred stock | 6,451 |
Ending balance | $ | 144,742 |

X
- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment in Preferred Stock [Abstract] + References No definition available. + Details
Name: | xon_InvestmentinPreferredStockAbstract
Namespace Prefix: | xon_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration