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ACQUISITIONS (Detail Textual 1) - USD ($) $ in Thousands	3 Months Ended								5 Months Ended	12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Business Acquisition [Line Items]
Revenue	$ 1,137,389	$ 1,086,418	$ 1,057,530	$ 1,073,280	$ 1,113,900	$ 977,274	$ 830,437	$ 822,442		$ 4,354,617	$ 3,744,053	$ 3,313,452
Net income	$ 44,231	$ 40,357	$ 42,420	$ 36,663	$ 43,599	$ 34,116	$ 30,452	$ 34,632		163,671	142,799	126,195
Amortization expense										$ 40,700	38,000	$ 39,500
NSS Acquisition
Business Acquisition [Line Items]
Revenue									$ 427,200
Net income									18,800
Acquisition-related expenses											$ 7,300
Integration and restructuring costs									3,900
NSS Acquisition | Customer contracts and related customer relationships
Business Acquisition [Line Items]
Amortization expense									$ 4,200

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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-SubTopic 10
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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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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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