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Commitments and Contingencies (Details) | 3 Months Ended
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Sep. 30, 2018 USD ($) letter_of_credit
Debt Instrument [Line Items] |
Total lease commitment | $ 15,000,000
Lease commitment term | 10 years
Number of letters of credit provided as collateral | letter_of_credit | 2
Standby Letters of Credit |
Debt Instrument [Line Items] |
Current borrowing capacity | $ 18,000,000
Credit Facility | Revolving Credit Facility |
Debt Instrument [Line Items] |
Maximum borrowing capacity under credit facility | 250,000,000
Unused portion of credit facility | 234,000,000
Credit Facility | Swingline Facility |
Debt Instrument [Line Items] |
Maximum borrowing capacity under credit facility | 20,000,000
Collateral for Workers' Compensation Obligation | Line of Credit |
Debt Instrument [Line Items] |
Maximum borrowing capacity under credit facility | 5,000,000
Unused portion of credit facility | $ 3,000,000

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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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