v3.10.0.1

SIGNIFICANT ACCOUNTING POLICIES - Assets Useful Lives (Details)	6 Months Ended	9 Months Ended
	Jun. 30, 2018	Sep. 30, 2018
Minimum
Property, Plant and Equipment [Line Items]
Intangible asset, useful life		3 years
Maximum
Property, Plant and Equipment [Line Items]
Intangible asset, useful life		20 years
Building and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Depreciable lives	25 years
Building and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Depreciable lives	30 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Depreciable lives	5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Depreciable lives	7 years
Computer equipment | Minimum
Property, Plant and Equipment [Line Items]
Depreciable lives	3 years
Computer equipment | Maximum
Property, Plant and Equipment [Line Items]
Depreciable lives	5 years
Business software
Property, Plant and Equipment [Line Items]
Depreciable lives	3 years
Office and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Depreciable lives	5 years
Office and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Depreciable lives	7 years
Instruments
Property, Plant and Equipment [Line Items]
Depreciable lives	5 years
Sample inventory
Property, Plant and Equipment [Line Items]
Depreciable lives	2 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_OfficeEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_TechnologyEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=kids_SampleInventoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: