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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands | Oct. 29, 2017 | Jul. 01, 2017 | Jan. 29, 2017 | Mar. 04, 2015
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Commitments and Contingencies [Line Items] |  |  |  |
Earn-out liability booked | $ 23,247 |  | $ 6,068 |
Amount expected to be settled within twelve months | 11,486 |  |  |
Cycleo [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Potential payments under earn-out arrangements, high estimate | 16,000 |  |  |
Earn-out liability booked | 6,059 |  | 6,068 |
Amount expected to be settled within twelve months | 2,798 |  |  |
Triune Systems [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Earn-out liability booked | 0 |  | 0 |
Amount expected to be settled within twelve months | 0 |  |  |
AptoVision Technologies Inc. [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Earn-out liability booked | 17,188 |  | $ 0 |
Amount expected to be settled within twelve months | 8,688 |  |  |
Earn-out Payable Within First Three Fiscal Years Of Acquisition Date [Member] | Triune Systems [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Potential payments under earn-out arrangements, high estimate |  |  |  | $ 70,000
Additional Earn-out Payable After Third Fiscal Year From Acquisition Date [Member] | Triune Systems [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Potential payments under earn-out arrangements, high estimate |  |  |  | $ 16,000
Minimum [Member] | Environmental Issue |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Loss contingency, estimate of possible loss | 4,700 |  |  |
Maximum [Member] | AptoVision Technologies Inc. [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Potential payments under earn-out arrangements, high estimate |  | $ 47,000 |  |
Maximum [Member] | Environmental Issue |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Loss contingency, estimate of possible loss | $ 7,200 |  |  |
Maximum [Member] | Earn-out Payable Within First Three Fiscal Years Of Acquisition Date [Member] | AptoVision Technologies Inc. [Member] |  |  |  |
Commitments and Contingencies [Line Items] |  |  |  |
Potential payments under earn-out arrangements, high estimate |  | $ 47,000 |  |

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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 + Details
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