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Employee Benefit Plans - Narrative (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Mar. 31, 2019 USD ($) hour plan | Mar. 31, 2018 USD ($) | Jun. 30, 2012 USD ($) quarter | Jan. 09, 2019 USD ($) | Jan. 08, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jan. 05, 2015 USD ($) | Nov. 18, 2014 USD ($)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Pension settlement charge | $ 0 | $ 0 | $ 10,948,000 | $ 0 |  |  |  |  |  |
Multiemployer plans, number of plans | plan |  |  | 2 |  |  |  |  |  |  |
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits |  |  | $ 24,400,000 |  |  |  |  |  |  |
Multiemployer Plans, Withdrawal Obligation, Assessment | 500,000 |  | 500,000 |  |  | $ 500,000 | $ 500,000 |  |  |
Other Commitment, Due after Fifth Year | $ 200,000 |  | $ 200,000 |  |  |  |  |  |  |
Defined contribution plan, hours threshold for eligibility | hour |  |  | 1,000 |  |  |  |  |  |  |
Defined contribution plan, employer matching contribution percent | 100.00% |  | 50.00% |  |  |  |  |  |  |
Defined contribution plan, employer matching contribution, percent of eligible income | 4.00% |  | 6.00% |  |  |  |  |  |  |
Defined contribution plan, employer matching contribution, annual vesting percent |  |  | 20.00% |  |  |  |  |  |  |
Defined contribution plan, vesting period |  |  | 5 years |  |  |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Amount | $ 700,000 | 500,000 | $ 1,600,000 | 1,500,000 |  |  |  |  |  |
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan |  |  | 6,700,000 |  |  |  |  |  |  |
Compensation Expense | 700,000 | 600,000 | $ 900,000 | 1,800,000 |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Investment horizon for long-term capital market assumptions |  |  | 20 years |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Investment horizon for long-term capital market assumptions |  |  | 30 years |  |  |  |  |  |  |
Brewmatic Plan [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation | 114,100,000 |  | $ 114,100,000 |  |  |  |  |  |  |
Defined Benefit Plan, Fair Value of Plan Assets | 67,400,000 |  | 67,400,000 |  |  |  |  |  |  |
Defined Benefit Plan, Funded (Unfunded) Status of Plan | 46,700,000 |  | 46,700,000 |  |  |  |  |  |  |
WCTPP [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Multiemployer Plans, Withdrawal Obligation, Assessment | 3,400,000 |  | 3,400,000 |  |  |  |  |  |  |
Withdrawal obligation | 2,100,000 |  | 2,100,000 |  |  |  |  |  |  |
Labor Management Pension Fund |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Withdrawal obligation |  |  |  |  | $ 4,300,000 |  |  | $ 3,800,000 | $ 4,900,000 | $ 4,400,000
Multiemployer plan, quarterly installments for withdrawal liability |  |  |  |  | $ 100,000 |  |  |  |  |
Multiemployer plan, quarterly installments for withdrawal liability, number of quarters | quarter |  |  |  |  | 80 |  |  |  |  |
Local 807 Pension Plan [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, Payment for Settlement |  |  | 3,000,000 |  |  |  |  |  |  |
Multiemployer plan, quarterly installments for withdrawal liability |  |  | $ 91,000 |  |  |  |  |  |  |
Other Postretirement Benefit Plan |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Multiemployer plans, number of plans | plan |  |  | 9 |  |  |  |  |  |  |
Pension Plan |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Pension settlement charge | $ 0 | $ 0 | $ 10,948,000 | $ 0 |  |  |  |  |  |
Multiemployer Plans, Pension | Multiemployer Plans, Defined Benefit Pension Plans [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Multiemployer plans, number of plans | plan |  |  | 2 |  |  |  |  |  |  |
Multiemployer Plans, Pension | Multiemployer Plans, Defined Contribution Pension Plan [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Multiemployer plans, number of plans | plan |  |  | 1 |  |  |  |  |  |  |
Employee-related | WCTPP [Member] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |  |  |  |  |  |  |
Defined Benefit Plan, Benefit Obligation, Payment for Settlement |  |  | $ 153,822 |  |  |  |  |  |  |
Multiemployer plan, quarterly installments for withdrawal liability |  |  | $ 190,507 |  |  |  |  |  |  |

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- Definition Amount of payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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