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Note 6 - Intangible Assets and Goodwill - Changes in Carrying Amount of Intangible Assets (Details) - USD ($) | 12 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015
Beginning balance | $ 292,839,000 | $ 108,776,000
Acquisitions | 53,500,000 | 222,710,000
Amortization expense | (29,395,000) | (26,170,000)
Currency translation | (6,420,000) | (12,777,000)
Ending balance | $ 303,124,000 | $ 292,839,000

X
- Definition Amount of decrease in assets, excluding financial assets, lacking physical substance with a definite life, resulting from amortization expense. + References No definition available. + Details
Name: | tech_IntangibleAssetsAmortizationExpense
Namespace Prefix: | tech_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References No definition available. + Details
Name: | us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration