Segment Information - Operations and Identifiable Assets (Details) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2017 USD ($) customer	Mar. 31, 2016 USD ($) customer	Mar. 31, 2017 USD ($) segment customer	Mar. 31, 2016 USD ($) customer	Jun. 30, 2016 USD ($)
Operations and identifiable assets by industry segment
Number of identifiable industry segments \| segment			3
Total revenues	$ 245,146	$ 210,804	$ 708,549	$ 608,193
Income (loss) from operations	19,694	$ 13,344	30,486	$ 29,822
Segments assets	$ 1,235,737		$ 1,235,737		$ 991,723
SAT in Mexico \| Revenue \| Customer
Operations and identifiable assets by industry segment
Number of major customers \| customer	1	1	1	1
Percentage of benchmark derived from specified source	12.00%	14.00%	12.00%	14.00%
Operating Segments \| Security Division
Operations and identifiable assets by industry segment
Total revenues	$ 144,824	$ 110,550	$ 408,037	$ 300,680
Income (loss) from operations	18,287	14,554	36,767	29,723
Segments assets	818,058		818,058		519,068
Operating Segments \| Healthcare Division
Operations and identifiable assets by industry segment
Total revenues	49,667	49,113	146,427	156,126
Income (loss) from operations	936	(188)	(1,527)	6,130
Segments assets	177,562		177,562		200,067
Operating Segments \| Optoelectronics and Manufacturing Division
Operations and identifiable assets by industry segment
Total revenues	58,309	61,306	175,864	184,414
Income (loss) from operations	5,974	5,325	16,149	14,078
Segments assets	199,320		199,320		211,337
Corporate
Operations and identifiable assets by industry segment
Income (loss) from operations	(6,067)	(6,077)	(21,882)	(19,182)
Segments assets	43,536		43,536		64,970
Eliminations
Operations and identifiable assets by industry segment
Total revenues	(7,654)	(10,165)	(21,779)	(33,027)
Income (loss) from operations	564	$ (270)	979	$ (927)
Segments assets	$ (2,739)		$ (2,739)		$ (3,719)

Number of customers that accounted for significant risk.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The net result for the period of deducting operating expenses from operating revenues.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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