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Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2017 | Mar. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 77,149 | $ 68,539 | $ 206,831 | $ 186,285
Income before provision for income taxes | 12,651 | 10,616 | 30,706 | 25,216
U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 71,658 | 63,036 | 189,673 | 170,619
Income before provision for income taxes | 12,193 | 10,635 | 29,470 | 25,094
Australia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 5,491 | 5,503 | 17,158 | 15,666
Income before provision for income taxes | 556 | 230 | 1,394 | 347
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 77,149 | 68,539 | 206,831 | 186,285
Operating Segments | U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 73,844 | 66,071 | 196,285 | 176,972
Operating Segments | Australia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 5,491 | 5,503 | 17,158 | 15,666
Intersegment Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | (2,186) | (3,035) | (6,612) | (6,353)
Income before provision for income taxes | (98) | (249) | (158) | (225)
Intersegment Eliminations | U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 2,186 | $ 3,035 | $ 6,612 | $ 6,353

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