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PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 265,086 | $ 246,836 |
Less accumulated depreciation and amortization |  | (137,701) | (131,312) |
Property and equipment, net |  | 127,385 | 115,524 |
Depreciation expense |  | 20,500 | 43,300 | $ 56,000
Mexican government |  |  |  |
Contract with Mexican government |  |  |  |
Term of agreement with Mexican government to provide security screening services | 2 years |  |  |
Net book value of certain fixed assets transferred | $ 29,500 |  |  |
Recognized amortization expense |  | 14,300 | 6,900 |
Mexican government | Prepaid expenses and other current assets |  |  |  |
Contract with Mexican government |  |  |  |
Remaining cost to obtain the contract |  | 7,700 |  |
Land |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | 16,564 | 16,569 |
Buildings, civil works and improvements |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 55,391 | 56,585 |
Buildings, civil works and improvements | Minimum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 5 years |  |
Buildings, civil works and improvements | Maximum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 40 years |  |
Leasehold improvements |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 8,311 | 9,681 |
Leasehold improvements | Minimum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 1 year |  |
Leasehold improvements | Maximum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 13 years |  |
Equipment and tooling |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 128,428 | 117,294 |
Equipment and tooling | Minimum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 3 years |  |
Equipment and tooling | Maximum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 10 years |  |
Furniture and fixtures |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 3,190 | 3,331 |
Furniture and fixtures | Minimum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 3 years |  |
Furniture and fixtures | Maximum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 10 years |  |
Computer equipment |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 18,733 | 18,759 |
Computer equipment | Minimum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 3 years |  |
Computer equipment | Maximum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 5 years |  |
Computer software |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 20,146 | 19,509 |
Computer software | Minimum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 3 years |  |
Computer software | Maximum |  |  |  |
Property and equipment |  |  |  |
Estimated Useful Lives |  | 10 years |  |
Computer software implementation in process |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 8,563 | 4,318 |
Construction in process |  |  |  |
Property and equipment |  |  |  |
Property and equipment, gross |  | $ 5,760 | $ 790 |

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