XML 48 R34.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 2 - Acquisitions - Preliminary Price Allocation (Details) - USD ($) $ in Thousands |  |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jan. 17, 2018 | Jul. 07, 2017 | Mar. 01, 2017 | Feb. 28, 2017 | Mar. 31, 2018 | Apr. 01, 2017 | Dec. 30, 2017
Cash, net of cash acquired |  |  |  |  | $ 306,487 | $ 14,172 |
Goodwill |  |  |  |  | 840,574 |  | $ 453,414
Goodwill |  |  |  |  | 840,574 |  | $ 453,414
Cash, net of cash acquired |  |  |  |  | $ 306,487 | $ 14,172 |
IXYS Corporation [Member] |  |  |  |  |  |  |
Cash, net of cash acquired | $ 302,865 |  |  |  |  |  |
Cash settled stock options | 3,622 |  |  |  |  |  |
Littelfuse stock | 434,192 |  |  |  |  |  |
Converted stock options | 38,109 |  |  |  |  |  |
Total purchase consideration | 778,788 |  |  |  |  |  |
Current assets, net | 154,254 |  |  |  |  |  |
Property, plant, and equipment | 76,580 |  |  |  |  |  |
Intangible assets | 211,600 |  |  |  |  |  |
Goodwill | 381,599 |  |  |  |  |  |
Other non-current assets | 31,570 |  |  |  |  |  |
Other non-current liabilities | (76,815) |  |  |  |  |  |
| 778,788 |  |  |  |  |  |
Cash | 380,500 |  |  |  |  |  |
Current assets, net | 154,254 |  |  |  |  |  |
Intangible assets, other than goodwill | 211,600 |  |  |  |  |  |
Goodwill | 381,599 |  |  |  |  |  |
| 778,788 |  |  |  |  |  |
Cash, net of cash acquired | 302,865 |  |  |  |  |  |
Property, plant, and equipment | $ 76,580 |  |  |  |  |  |
U.S. Sensor [Member] |  |  |  |  |  |  |
Current assets, net |  | $ 4,635 |  |  |  |  |
Goodwill |  | 16,075 |  |  |  |  |
|  | 24,340 |  |  |  |  |
Cash |  | 24,340 |  |  |  |  |
Current assets, net |  | 4,635 |  |  |  |  |
Goodwill |  | 16,075 |  |  |  |  |
Current liabilities |  | (540) |  |  |  |  |
|  | 24,340 |  |  |  |  |
U.S. Sensor [Member] | Patented and Unpatented Technologies [Member] |  |  |  |  |  |  |
Intangible assets |  | 1,090 |  |  |  |  |
Intangible assets, other than goodwill |  | 1,090 |  |  |  |  |
U.S. Sensor [Member] | Trademarks and Trade Names [Member] |  |  |  |  |  |  |
Intangible assets |  | 200 |  |  |  |  |
Intangible assets, other than goodwill |  | 200 |  |  |  |  |
U.S. Sensor [Member] | Noncompete Agreements [Member] |  |  |  |  |  |  |
Intangible assets |  | 50 |  |  |  |  |
Intangible assets, other than goodwill |  | 50 |  |  |  |  |
U.S. Sensor [Member] | Customer Relationships [Member] |  |  |  |  |  |  |
Intangible assets |  | 2,830 |  |  |  |  |
Intangible assets, other than goodwill |  | $ 2,830 |  |  |  |  |
Monolith [Member] |  |  |  |  |  |  |
Cash, net of cash acquired |  |  | $ 14,172 | $ 14,200 |  |  |
Current assets, net |  |  | 891 |  |  |  |
Property, plant, and equipment |  |  | 789 |  |  |  |
Goodwill |  |  | 20,641 |  |  |  |
Other non-current liabilities |  |  | (1,870) |  |  |  |
Current assets, net |  |  | 891 |  |  |  |
Goodwill |  |  | 20,641 |  |  |  |
Current liabilities |  |  | (639) |  |  |  |
Original investment |  |  | 3,500 | 3,500 |  |  |
Cash, net of cash acquired |  |  | 14,172 | 14,200 |  |  |
Non-cash, fair value of commitment to purchase non-controlling interest |  |  | 9,000 | 9,000 |  |  |
Total purchase consideration |  |  | 26,672 | $ 26,700 |  |  |
Property, plant, and equipment |  |  | 789 |  |  |  |
|  |  | 26,672 |  |  |  |
Monolith [Member] | Patented and Unpatented Technologies [Member] |  |  |  |  |  |  |
Intangible assets |  |  | 6,720 |  |  |  |
Intangible assets, other than goodwill |  |  | 6,720 |  |  |  |
Monolith [Member] | Noncompete Agreements [Member] |  |  |  |  |  |  |
Intangible assets |  |  | 140 |  |  |  |
Intangible assets, other than goodwill |  |  | $ 140 |  |  |  |

X
- Definition Amount of consideration transferred, consisting of cash settled stock options. + References No definition available. + Details
Name: | lfus_BusinessCombinationConsiderationTransferredCashSettledStockOptions
Namespace Prefix: | lfus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The fair value as of the acquisition-date of the commitment to purchase noncontrolling interest in the acquiree in a business combination. + References No definition available. + Details
Name: | lfus_BusinessCombinationConsiderationTransferredCommitmentToPurchaseNoncontrollingInterest
Namespace Prefix: | lfus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of consideration transferred, consisting of converted stock options. + References No definition available. + Details
Name: | lfus_BusinessCombinationConsiderationTransferredConvertedStockOptions
Namespace Prefix: | lfus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of consideration transferred, net of cash acquired in a business combination. + References No definition available. + Details
Name: | lfus_BusinessCombinationConsiderationTransferredNetOfCashAcquired
Namespace Prefix: | lfus_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the fair value of the noncontrolling interest in the acquiree at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value at acquisition-date of the assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interests issued by the acquirer, including but not limited to, instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeFairValue1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lfus_IXYSCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lfus_USSensorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=lfus_PatentedAndUnpatentedTechnologiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_TrademarksAndTradeNamesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_CustomerRelationshipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lfus_MonolithMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |