Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
Jun. 30, 2017	Jun. 30, 2016
Net income	$ 3,297,615	$ 3,132,545
Unrealized gain from marketable securities, net of tax	55,027	225,603
Comprehensive income	$ 3,352,642	$ 3,358,148

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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