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Segment Information - Operations and Identifiable Assets (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) customer segment | Dec. 31, 2018 USD ($) customer | Jun. 30, 2019 USD ($)
Operations and identifiable assets by industry segment |  |  |  |  |
Number of identifiable industry segments | segment |  |  | 3 |  |
Total revenues | $ 305,342 | $ 303,205 | $ 596,194 | $ 569,454 |
Income (Loss) from Operations | 32,919 | 31,707 | 57,806 | $ 47,964 |
Segments assets | 1,301,926 |  | $ 1,301,926 |  | $ 1,264,864
Revenue | Customer Concentration Risk |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Number of major customers | customer |  |  | 0 | 0 |
Accounts receivable | Customer Concentration Risk |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Number of major customers | customer |  |  | 1 |  |
Concentration (as a percent) |  |  | 14.00% |  |
Servicio de Administaction Tributaria ("SAT") in Mexico | Revenue | Customer Concentration Risk |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Concentration (as a percent) |  |  | 10.00% | 10.00% |
Operating Segments | Security Division |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | 202,437 | 188,684 | $ 391,401 | $ 358,644 |
Income (Loss) from Operations | 28,562 | 26,063 | 48,880 | 49,113 |
Segments assets | 815,336 |  | 815,336 |  | 793,810
Operating Segments | Healthcare Division |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | 41,992 | 51,559 | 82,200 | 89,832 |
Income (Loss) from Operations | 1,294 | 2,209 | 4,111 | 334 |
Segments assets | 193,617 |  | 193,617 |  | 157,639
Operating Segments | Optoelectronics and Manufacturing Division |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | 72,806 | 72,019 | 146,444 | 142,973 |
Income (Loss) from Operations | 9,018 | 8,067 | 17,787 | 14,892 |
Segments assets | 241,321 |  | 241,321 |  | 237,851
Corporate |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Income (Loss) from Operations | (6,080) | (4,560) | (13,417) | (15,911) |
Segments assets | 93,612 |  | 93,612 |  | 79,498
Eliminations |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | (11,893) | (9,057) | (23,851) | (21,995) |
Income (Loss) from Operations | 125 | $ (72) | 445 | $ (464) |
Segments assets | $ (41,960) |  | $ (41,960) |  | $ (3,934)

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