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Segment Information - Operations and Identifiable Assets (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2017 USD ($) customer | Dec. 31, 2016 USD ($) customer | Dec. 31, 2017 USD ($) segment | Dec. 31, 2016 USD ($) | Jun. 30, 2017 USD ($)
Operations and identifiable assets by industry segment |  |  |  |  |
Number of identifiable industry segments | segment |  |  | 3 |  |
Total revenues | $ 277,528 | $ 242,548 | $ 534,661 | $ 463,403 |
Operating income (loss) | 18,147 | $ 8,693 | 37,541 | $ 10,792 |
Segments assets | $ 1,346,759 |  | $ 1,346,759 |  | $ 1,230,087
SAT in Mexico | Revenue | Customer |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Number of major customers | customer | 1 | 1 |  |  |
Percentage of benchmark derived from specified source | 12.00% | 12.00% | 12.00% | 13.00% |
Operating Segments | Security Division |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | $ 172,269 | $ 139,504 | $ 334,514 | $ 263,213 |
Operating income (loss) | 22,471 | 9,130 | 45,164 | 18,480 |
Segments assets | 917,953 |  | 917,953 |  | 785,230
Operating Segments | Healthcare Division |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | 52,506 | 51,110 | 98,035 | 96,760 |
Operating income (loss) | 603 | 801 | 1,450 | (2,463) |
Segments assets | 170,495 |  | 170,495 |  | 186,021
Operating Segments | Optoelectronics and Manufacturing division |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | 63,886 | 60,602 | 122,812 | 117,556 |
Operating income (loss) | 4,502 | 5,525 | 9,677 | 10,175 |
Segments assets | 196,208 |  | 196,208 |  | 196,567
Corporate |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Operating income (loss) | (9,118) | (6,802) | (17,871) | (15,815) |
Segments assets | 65,672 |  | 65,672 |  | 64,959
Eliminations |  |  |  |  |
Operations and identifiable assets by industry segment |  |  |  |  |
Total revenues | (11,133) | (8,668) | (20,700) | (14,126) |
Operating income (loss) | (311) | $ 39 | (879) | $ 415 |
Segments assets | $ (3,569) |  | $ (3,569) |  | $ (2,690)

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