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Loans Payable and Long-Term Debt (Narrative) (Details) |  |  |  | 12 Months Ended | 28 Months Ended | 60 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 29, 2017 USD ($) | Jan. 25, 2016 USD ($) | Apr. 30, 2019 USD ($) | Apr. 30, 2018 USD ($) loan | Dec. 31, 2005 loan | Apr. 30, 2015 USD ($) lease | Apr. 30, 2019 USD ($) | Feb. 12, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt, outstanding balance |  |  |  | $ 703,305,000 |  |  |  | $ 703,305,000 |
New Markets Tax Credit Investment |  |  | $ 2,300,000 |  |  |  |  |  |
New Markets Tax Credit, Recapture Period |  |  | 7 years |  |  |  |  |  |
Debt issuance costs |  |  |  | 11,814,000 |  |  |  | 11,814,000 |
Notes Payable to Banks [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
LIBOR rate |  |  | 1.20% |  |  |  |  |  |
Loan agreement amount |  |  | $ 6,600,000 |  |  |  |  |  |
Loan term |  |  | 30 years |  |  |  |  |  |
Debt issuance costs |  |  | $ 300,000 |  |  |  |  |  |
Deferred Finance Costs, Amortization Period |  |  | 30 years |  |  |  |  |  |
Other Noncurrent Assets [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Notes, Loans and Financing Receivable, Net, Noncurrent |  |  | $ 4,300,000 |  |  |  |  |  |
Long-term Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amount drawn on loan |  |  |  | 6,700,000 |  |  |  | 6,700,000 |
Initial Term Loan [Member] | Loans Payable [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  | 170,000,000 | 230,000,000 |  |  | 170,000,000 |
Loan agreement amount |  | $ 250,000,000 |  |  |  |  |  |  |
Initial Term Loan and Delayed Draw Loan [Member] | Loans Payable [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  | 340,000,000 | 460,000,000 |  |  | 340,000,000 |
Delayed Draw Term Loan [Member] | Loans Payable [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  | $ 170,000,000 | 230,000,000 |  |  | 170,000,000 |
Loan agreement amount |  | 250,000,000 |  |  |  |  |  |  |
Allegany County, Maryland Site [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Number of loan agreements | loan |  |  |  |  |  | 2 |  |  |
Principal amount forgiven | $ 2,200,000 |  |  |  |  |  |  |  |
Accrued interest forgiven | 900,000 |  |  |  |  |  |  |  |
First American Financial Bancorp [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Capital lease obligations incurred |  |  |  |  |  |  |  | 1,500,000 |
Capital lease term |  |  |  | 48 months |  |  |  |  |
Capital lease agreement |  |  |  | $ 500,000 | 900,000 |  |  | 500,000 |
e-Plus Group [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Number of capitalized lease agreements | lease |  |  |  |  |  |  | 19 |  |
Capital lease obligations incurred |  |  |  |  |  |  | $ 4,300,000 |  |
Number Of Leases 2 | lease |  |  |  |  |  |  | 1 |  |
Capital Lease Term 2 |  |  |  |  |  |  | 60 months |  |
Capital lease agreement |  |  |  | $ 2,700,000 | 2,200,000 |  |  | $ 2,700,000 |
e-Plus Group, 36-Month Leases [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Number Of Leases | lease |  |  |  |  |  |  | 8 |  |
Capital lease term |  |  |  |  |  |  | 36 months |  |
e-Plus Group, 51-Month Leases [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Number Of Leases | lease |  |  |  |  |  |  | 10 |  |
Capital lease term |  |  |  |  |  |  | 51 months |  |
West Virginia Economic Development Authority [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Fixed interest rate |  |  |  | 2.00% |  |  |  | 2.00% |
Debt, outstanding balance |  |  |  | $ 3,300,000 | $ 3,800,000 |  |  | $ 3,300,000 |
Number of loan agreements | loan |  |  |  |  | 2 |  |  |  |
Capital lease agreement |  |  |  | 10,000,000 |  |  |  | 10,000,000 |
Principal amount forgiven | 2,300,000 |  |  |  |  |  |  |  |
Accrued interest forgiven | $ 200,000 |  |  |  |  |  |  |  |
4.875% Senior Notes Due 2026 [Member] | Senior Notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loan agreement amount |  |  |  |  |  |  |  |  | $ 350,000,000
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  |  |  | 4.875%
RSI Notes [Member] | Secured Debt [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Long-term Debt, Fair Value |  |  |  | 347,000,000 |  |  |  | 347,000,000 |
Long-term Debt |  |  |  | $ 350,000,000 |  |  |  | $ 350,000,000 |
Minimum [Member] | First American Financial Bancorp [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Market interest rate |  |  |  | 3.50% |  |  |  | 3.50% |
Minimum [Member] | e-Plus Group [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Market interest rate |  |  |  | 3.50% |  |  |  | 3.50% |
Maximum [Member] | First American Financial Bancorp [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Market interest rate |  |  |  | 6.50% |  |  |  | 6.50% |
Maximum [Member] | e-Plus Group [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Market interest rate |  |  |  | 6.50% |  |  |  | 6.50% |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Amount outstanding |  |  |  | $ 0 | $ 0 |  |  | $ 0 |
Total Secured Debt To EBITDA Ratio |  |  |  | 2.50 |  |  |  |  |
Proceeds from term loan |  | 50,000,000 |  |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  |  |  | 0.20% |  |  |  |  |
Total Funded Debt To EBITDA Ratio, through January 31, 2020 |  |  |  | 3.50 |  |  |  |  |
Total Funded Debt to EBITDA Ratio, thereafter |  |  |  | 3.25 |  |  |  |  |
Total Funded Debt to EBITDA Ratio upon Qualified Acquisition |  |  |  | 3.75 |  |  |  |  |
Fixed Charge Coverage Ratio |  |  |  | 1.25 |  |  |  |  |
Total Funded Debt to EBITDA Ratio to Permit Unlimited Restricted Payments |  |  |  | 2.50 |  |  |  |  |
Debt Covenant, Permitted Restricted Payments |  |  |  | $ 50,000,000 |  |  |  |  |
Total Funded Debt to EBITDA Ratio, applicable to the exception permitting unlimited restricted payments, amended |  |  |  | 2.75 |  |  |  |  |
Revolving Credit Facility [Member] | Wells Fargo [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line Of Credit Facility, Agreement Terminated |  | 35,000,000 |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread on interest rate |  |  |  | 0.75% |  |  |  |  |
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Spread on interest rate |  |  |  | 1.75% |  |  |  |  |
RSI Home Products, Inc. [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Indebtedness assumed (including accrued interest) |  | $ 589,000,000 |  |  |  |  |  |  |
RSI Home Products, Inc. [Member] | Initial Term Loan [Member] | Loans Payable [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Loan term |  | 5 years |  |  |  |  |  |  |
RSI Home Products, Inc. [Member] | RSI Notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Indebtedness assumed (including accrued interest) |  | $ 589,000,000 |  |  |  |  |  |  |
RSI Home Products, Inc. [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from term loan |  | $ 50,000,000 |  |  |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of long-term debt and capital lease obligations including current maturities. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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