SEGMENT INFORMATION - By industry segment (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Operations and identifiable assets by industry segment
Total revenues	$ 1,166,044	$ 1,182,115	$ 1,089,286
Income (loss) from operations	104,887	107,774	55,908
Segments assets	1,268,541	1,264,864	1,255,691
Capital expenditures	20,388	27,412	43,198
Depreciation and amortization	49,758	56,234	69,754
Security Division
Operations and identifiable assets by industry segment
Total revenues	742,043	747,550	690,001
Capital expenditures	8,648	15,830	14,479
Depreciation and amortization	34,907	39,788	55,630
Healthcare Division
Operations and identifiable assets by industry segment
Total revenues	185,322	188,477	189,387
Capital expenditures	1,404	1,372	1,540
Depreciation and amortization	4,390	5,426	4,910
Optoelectronics and Manufacturing Division
Operations and identifiable assets by industry segment
Total revenues	238,679	246,088	209,898
Capital expenditures	6,291	4,760	3,286
Depreciation and amortization	8,785	9,269	7,766
Corporate
Operations and identifiable assets by industry segment
Income (loss) from operations	(31,630)	(30,598)	(35,030)
Segments assets	109,178	79,498	66,453
Capital expenditures	4,045	5,450	23,893
Depreciation and amortization	1,676	1,751	1,448
Operating Segments \| Security Division
Operations and identifiable assets by industry segment
Total revenues	742,043	747,550	690,001
Income (loss) from operations	90,063	97,426	84,106
Segments assets	758,054	793,810	804,527
Operating Segments \| Healthcare Division
Operations and identifiable assets by industry segment
Total revenues	185,322	188,477	189,387
Income (loss) from operations	15,766	12,277	(14,609)
Segments assets	208,857	157,639	167,611
Operating Segments \| Optoelectronics and Manufacturing Division
Operations and identifiable assets by industry segment
Total revenues	283,828	288,630	254,485
Income (loss) from operations	30,566	29,519	22,024
Segments assets	232,408	237,851	220,373
Eliminations
Operations and identifiable assets by industry segment
Total revenues	(45,149)	(42,542)	(44,587)
Income (loss) from operations	122	(850)	(583)
Segments assets	(39,956)	(3,934)	(3,273)
Eliminations \| Optoelectronics and Manufacturing Division
Operations and identifiable assets by industry segment
Total revenues	$ 45,149	$ 42,542	$ 44,587

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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