SEGMENT INFORMATION - By industry segment (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Operations and identifiable assets by industry segment
Total revenues	$ 1,089,286	$ 960,951	$ 829,660
Income (loss) from operations	55,908	33,292	38,374
Segments assets	1,255,691	1,230,087	991,723
Capital expenditures	43,198	17,096	17,688
Depreciation and amortization	69,754	68,235	57,922
Security Division
Operations and identifiable assets by industry segment
Total revenues	690,001	555,197	411,212
Capital expenditures	14,479	10,436	8,910
Depreciation and amortization	55,630	53,924	43,257
Healthcare Division
Operations and identifiable assets by industry segment
Total revenues	189,387	200,034	211,458
Capital expenditures	1,540	1,797	2,395
Depreciation and amortization	4,910	6,495	7,401
Optoelectronics and Manufacturing division
Operations and identifiable assets by industry segment
Total revenues	209,898	205,720	206,990
Capital expenditures	3,286	2,856	4,539
Depreciation and amortization	7,766	6,561	5,842
Corporate
Operations and identifiable assets by industry segment
Income (loss) from operations	(35,030)	(29,359)	(27,199)
Segments assets	66,453	64,959	64,970
Capital expenditures	23,893	2,007	1,844
Depreciation and amortization	1,448	1,255	1,422
Operating Segments \| Security Division
Operations and identifiable assets by industry segment
Total revenues	690,001	555,197	411,212
Income (loss) from operations	84,106	35,256	37,845
Segments assets	804,527	785,230	519,068
Operating Segments \| Healthcare Division
Operations and identifiable assets by industry segment
Total revenues	189,387	200,034	211,458
Income (loss) from operations	(14,609)	2,624	8,351
Segments assets	167,611	186,021	200,067
Operating Segments \| Optoelectronics and Manufacturing division
Operations and identifiable assets by industry segment
Total revenues	254,485	236,100	247,502
Income (loss) from operations	22,024	23,792	19,654
Segments assets	220,373	196,567	211,337
Intersegment Eliminations
Operations and identifiable assets by industry segment
Total revenues	(44,587)	(30,380)	(40,512)
Income (loss) from operations	(583)	979	(277)
Segments assets	(3,273)	(2,690)	(3,719)
Intersegment Eliminations \| Optoelectronics and Manufacturing division
Operations and identifiable assets by industry segment
Total revenues	$ 44,587	$ 30,380	$ 40,512

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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