XML 61 R48.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 5 - Goodwill and Intangible Assets - Change in the Carrying Amount of Goodwill (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Goodwill |  | $ 72,156,000 | $ 66,137,000 |
Effect of foreign currency translation |  | 1,258,000 | (471,000) |
Acquisitions |  | 5,948,000 | 6,490,000 |
Impairment |  | (13,819,000) |  |
Goodwill |  | 65,543,000 | 72,156,000 | 66,137,000
Biological Indicators [Member] |  |  |  |
Goodwill |  | 24,019,000 | 20,898,000 |
Effect of foreign currency translation |  | 536,000 | (97,000) |
Acquisitions |  | 5,948,000 | 3,218,000 |
Impairment |  |  |  |
Goodwill |  | 30,503,000 | 24,019,000 | 20,898,000
Instruments [Member] |  |  |  |
Goodwill |  | 18,235,000 | 18,235,000 |
Effect of foreign currency translation |  |  |  |
Acquisitions |  |  |  |
Impairment |  |  |  |
Goodwill |  | 18,235,000 | 18,235,000 | 18,235,000
Cold Chain Monitoring [Member] |  |  |  |
Goodwill |  | 15,404,000 | 13,647,000 |
Effect of foreign currency translation |  |  |  |
Acquisitions |  |  | 1,757,000 |
Impairment |  |  |  |
Goodwill |  | 15,404,000 | 15,404,000 | 13,647,000
Cold Chain Packaging [Member] |  |  |  |
Goodwill |  | 14,498,000 | 13,357,000 |
Effect of foreign currency translation |  | 722,000 | (374,000) |
Acquisitions |  |  | 1,515,000 |
Impairment | $ (13,819,000) | (13,819,000) |  |
Goodwill |  | $ 1,401,000 | $ 14,498,000 | $ 13,357,000

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 Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits 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 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the 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 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mlab_BiologicalIndicatorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mlab_InstrumentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mlab_ColdChainMonitoringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mlab_ColdChainPackagingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |