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Fair Value of Financial Assets and Liabilities (Tables) | 9 Months Ended
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Oct. 27, 2017
Fair Value Disclosures [Abstract] |
Schedule of other financial assets and liabilities measured at fair value | Carrying values and fair values of long-term debt, including the short-term portion, in the Condensed Consolidated Balance Sheets are as follows:
|  | October 27, 2017 |  | October 28, 2016 |  | January 27, 2017
(in thousands) |  | Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Long-term debt, including short-term portion |  | $ | 496,975 |  |  | $ | 414,353 |  |  | $ | 502,125 |  |  | $ | 386,636 |  |  | $ | 500,838 |  |  | $ | 379,385 |
Condensed Consolidated Balance Sheets at fair value. The fair value of restricted cash was $1.6 million, $3.3 million and $3.3 million as of October 27, 2017, October 28, 2016 and January 27, 2017, respectively based on Level 1 inputs. Restricted cash amounts are valued based upon statements received from financial institutions.

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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