Business combination recognized identifiable assets acquired and liabilities assumed restricted cash.

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- Definition

Indefinite lived intangible asset useful life.

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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.

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Amount of assets acquired at the acquisition date.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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- Definition

Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Amount, after allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date, classified as noncurrent.

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

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- Definition

The amount of inventory recognized as of the acquisition date.

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- Definition

Amount of liabilities assumed at the acquisition date.

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- Definition

Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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- Definition

Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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- Definition

Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

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- Definition

Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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- 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.

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No definition available.

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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.

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Acquisitions - Summary of Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Jan. 31, 2019	Apr. 30, 2018	Jun. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill			$ 71,177	$ 72,401
Spinal Kinetics [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		$ 6,785
Restricted cash		30
Accounts receivable		1,705
Inventories		8,175
Prepaid expenses and other current assets		315
Property, plant and equipment		2,285
Other long-term assets		320
Deferred income taxes		3,594
Total identifiable assets acquired		62,509
Accounts payable		351
Other current liabilities		2,869
Other long-term liabilities		301
Total liabilities assumed		3,521
Goodwill		17,612
Total fair value of consideration transferred		76,600
Spinal Kinetics [Member] \| Previously Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents		6,785
Restricted cash		30
Accounts receivable		1,705
Inventories		8,175
Prepaid expenses and other current assets		315
Property, plant and equipment		2,285
Other long-term assets		320
Deferred income taxes		2,374
Total identifiable assets acquired		61,289
Accounts payable		351
Other current liabilities		2,873
Other long-term liabilities		301
Total liabilities assumed		3,525
Goodwill		18,836
Total fair value of consideration transferred		76,600
Spinal Kinetics [Member] \| Adjustments [Member]
Business Acquisition [Line Items]
Deferred income taxes		1,220
Total identifiable assets acquired		1,220
Other current liabilities		(4)
Total liabilities assumed		(4)
Goodwill		(1,224)
Options Medical [Member]
Business Acquisition [Line Items]
Total identifiable assets acquired	$ 6,575
Total liabilities assumed	175
Total fair value of consideration transferred	6,400
Options Medical [Member] \| Operating Lease Liability - Short-term [Member]
Business Acquisition [Line Items]
Other current liabilities	69
Options Medical [Member] \| Operating Lease Liability - Long-term [Member]
Business Acquisition [Line Items]
Other long-term liabilities	106
Options Medical [Member] \| Operating Lease Assets [Member]
Business Acquisition [Line Items]
Other long-term assets	175
Developed Technology [Member] \| Spinal Kinetics [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired		$ 12,400
Assigned Useful Life		10 years
Developed Technology [Member] \| Spinal Kinetics [Member] \| Previously Reported [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired		$ 12,400
In-process Research and Development ("IPR&D") [Member] \| Spinal Kinetics [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired		$ 26,800
Assigned Useful Life		10 years
In-process Research and Development ("IPR&D") [Member] \| Spinal Kinetics [Member] \| Previously Reported [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired		$ 26,800
Tradename [Member] \| Spinal Kinetics [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired		$ 100
Assigned Useful Life		2 years
Tradename [Member] \| Spinal Kinetics [Member] \| Previously Reported [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired		$ 100
Customer Relationships [Member] \| Options Medical [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired	$ 5,832
Assigned Useful Life	10 years
Assembled Workforce [Member] \| Options Medical [Member]
Business Acquisition [Line Items]
Finite lived intangible assets, net acquired	$ 568
Assigned Useful Life	5 years