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Debt (Narrative) (Details) - USD ($) $ in Thousands |  |  |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 09, 2017 | Apr. 04, 2016 | Oct. 31, 2013 | Mar. 31, 2018 | Jun. 30, 2017 | Jan. 08, 2017 | Apr. 03, 2016
Debt Instrument [Line Items] |  |  |  |  |  |  |
Outstanding under the revolving credit facility |  |  |  | $ 810,000 | $ 1,078,611 |  |
Union Bank, N.A. and HSBC Bank USA [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity | $ 1,300,000 |  | $ 700,000 |  |  | $ 1,000,000 | $ 700,000
Uncommitted option to increase credit facility | $ 300,000 |  | $ 300,000 |  |  |  |
Credit facility termination date |  |  |  | Oct. 31, 2018 |  |  |
Interest rate on outstanding principal amount |  |  |  | 3.00% |  |  |
Union Bank, N.A. and HSBC Bank USA [Member] | Letters Of Credit [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  | $ 25,000 |  |  |
Minimum [Member] | Union Bank, N.A. and HSBC Bank USA [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Commitment fees percentage rate on unused portion of credit facility |  |  |  | 0.15% |  |  |
Minimum [Member] | Union Bank, N.A. and HSBC Bank USA [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest rate equal to reference rate plus |  |  |  | 1.00% |  |  |
Maximum [Member] | Union Bank, N.A. and HSBC Bank USA [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Commitment fees percentage rate on unused portion of credit facility |  |  |  | 0.25% |  |  |
Maximum [Member] | Union Bank, N.A. and HSBC Bank USA [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Credit facility interest rate equal to reference rate plus |  |  |  | 2.00% |  |  |
Brightree LLC [Member] | Union Bank, N.A. and HSBC Bank USA [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum borrowing capacity |  | $ 1,000,000 |  |  |  |  |
Uncommitted option to increase credit facility |  | $ 300,000 |  |  |  |  |

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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