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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parentheticals) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 01, 2018 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Common Class A [Member] |  |  |  |  |
Purchases of shares of Common Stock (class A) |  | 69,420 | 8,075 | 72,820 | 20,075
Common Stock [Member] | Common Class A [Member] |  |  |  |  |
Balance | 13,866,691 | 13,866,811 | 13,866,691 | 13,866,751 | 13,866,691
Balance |  | 13,866,811 | 13,866,691 | 13,866,811 | 13,866,691
Purchases of shares of Common Stock (class A) |  | 69,420 | 8,075 | 72,820 | 20,075
Issuance of stock under ESPP shares of Common Stock (class A) |  | 553 | 505 | 1,286 | 1,966
Number of shares issued as result of stock conversion |  |  |  | 60 |
Common Stock [Member] | Common Class C [Member] |  |  |  |  |
Balance | 2,068,857 | 2,068,737 | 2,068,857 | 2,068,797 | 2,068,857
Balance |  | 2,068,737 | 2,068,857 | 2,068,737 | 2,068,857
Number of shares converted |  |  |  | (60) |
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Accounting Standards Update 2016-01 [Member] |  |  |  |  |
Reclassification pursuant to adoption of ASU 2016-01, tax (in Dollars) | $ 1,049 |  |  |  |

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