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CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (Parentheticals) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 01, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Reclassification pursuant to adoption of ASU 2016-01, tax (in Dollars) | $ 1,049 |  |  |  |
Common Class A [Member] |  |  |  |  |
Purchases of shares of Common Stock (class A) |  | 11,000 | 36,748 | 12,000 | 45,947
Common Stock [Member] | Common Class A [Member] |  |  |  |  |
Balance shares | 13,866,691 | 13,866,691 | 13,866,601 | 13,866,691 | 13,866,601
Balance shares |  | 13,866,691 | 13,866,691 | 13,866,691 | 13,866,691
Purchases of shares of Common Stock (class A) |  | 11,000 | 36,748 | 12,000 | 45,947
Issuance of stock under ESPP |  | 863 | 449 | 1,491 | 1,429
Conversion of shares |  |  | 90 |  | 90
Common Stock [Member] | Common Class C [Member] |  |  |  |  |
Balance shares | 2,068,857 | 2,068,857 | 2,068,947 | 2,068,857 | 2,068,947
Balance shares |  | 2,068,857 | 2,068,857 | 2,068,857 | 2,068,857
Conversion of shares |  |  | (90) |  | (90)

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