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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018
Effective Income Tax Rate Reconciliation, Percent, Total | 19.10% | 1.00%
Income Tax Expense (Benefit), Discrete Tax Items | $ (1.3) | $ 4.2
Excess Tax Benefit from Share-based Compensation, Operating Activities | 3.2 | 3.4
Income Tax Expense (Benefit), Other Immaterial Discrete Tax Items, Net | $ 1.9 | $ (0.8)

X
- Definition Represents the income tax expense (benefit) related to discrete tax items. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

X
- Definition Represents information related to other net immaterial discrete income tax expense (benefit). + References No definition available. + Details
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Namespace Prefix: | tech_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118258462&loc=d3e11374-113907 + Details
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