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Basis of Presentation - Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Jun. 30, 2016
--- | --- | ---
Fair value of financial instruments |  |
Liabilities - Contingent payment obligations | $ 17,100 | $ 17,100
Property and Equipment |  |
Net value of turnkey security screening program assets at Mexico | 15,000 |
Recurring |  |
Fair value of financial instruments |  |
Equity securities | 384 | 354
Insurance company contracts | 22,443 | 21,353
Interest rate contract | (13) | (31)
Total assets | 22,814 | 21,676
Liabilities - Contingent payment obligations | 17,117 | 17,117
Recurring | Level 1 |  |
Fair value of financial instruments |  |
Equity securities | 384 | 354
Total assets | 384 | 354
Recurring | Level 2 |  |
Fair value of financial instruments |  |
Insurance company contracts | 22,443 | 21,353
Interest rate contract | (13) | (31)
Total assets | 22,430 | 21,322
Recurring | Level 3 |  |
Fair value of financial instruments |  |
Total assets | 0 | 0
Liabilities - Contingent payment obligations | $ 17,117 | $ 17,117

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