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Revenue from Contracts with Customers - Contract Liabilities (Details) $ in Thousands | 6 Months Ended
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Jun. 30, 2019 USD ($)
Rebates and Incentives |
Allowance categories |
Balance at beginning of the period | $ 129,318
Provision related to current period sales | 128,509
Changes in estimate related to prior period sales | (3,017)
Credits/payments made | (119,659)
Balance at end of the period | 135,151
Product Returns |
Allowance categories |
Balance at beginning of the period | 15,465
Provision related to current period sales | 9,150
Credits/payments made | (1,502)
Balance at end of the period | 23,113
Trade Allowances and Chargebacks |
Allowance categories |
Balance at beginning of the period | 14,841
Provision related to current period sales | 31,988
Credits/payments made | (32,673)
Balance at end of the period | $ 14,156

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- Definition Amount of increase (decrease) in contract liability due to change in estimation of prior period sales. + References No definition available. + Details
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Namespace Prefix: | coll_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of decrease in contract liability due to payments made. + References No definition available. + Details
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Namespace Prefix: | coll_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of increase (decrease) in contract liability due to change in provision for current period sales. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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- Details
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