Liquidity (Details) - USD ($)	3 Months Ended	6 Months Ended
Oct. 01, 2016	Oct. 01, 2016	Jan. 02, 2016
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 44,909,000	$ 44,909,000	$ 6,611,000
Long-term line of credit facility	223,200,000	223,200,000
Line of credit facility, remaining borrowing capacity	$ 68,900,000	68,900,000
Average share price during period (in dollars per share)	$ 8.26
Lowest share price during period (in dollars per share)	7.10
Highest share price during period (in dollars per share)	$ 9.18
Daily market capitalization minimum		50,000,000.0
Mortgages
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 42,500,000	42,500,000
Tranche A Loan
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 2,500,000	$ 2,500,000

Daily Market Capitalization Minimum

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- Definition

Share Price, Average Share Price During Period

+ References

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- Definition

Share Price, Highest Price During Period

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- Definition

Share Price, Lowest Price During Period

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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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://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))
-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 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-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

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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