Condensed Consolidated Statements of Earnings and Comprehensive Income (Unaudited) (Parentheticals) - USD ($) |
3 Months Ended | |
|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Unrealized gains and losses on availiable-for-sale investments, net of tax | $ 4,576 | $ (171) |
| X | ||||||||||
- Definition Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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