Business acquisition potential future milestone payment.

No definition available.

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- Definition

Business acquisition potential future milestone percentage.

+ References

No definition available.

+ Details

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- 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.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Convertible Security
-URI http://asc.fasb.org/extlink&oid=6509036

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Publisher FASB
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- Definition

The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

+ References

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- Definition

The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

+ References

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- Definition

Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations.

+ References

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Fair Value Measurements (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	Feb. 11, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Purchase order received from former stockholders		$ 4,800
Leasehold improvement impairment			$ 900	$ 2,200
Impairment charge, intangible assets				10,700
Contingent Consideration Liabilities [Member]
Business Acquisition [Line Items]
Additions to contingent consideration liabilities with acquisitions		61,200
Contingent consideration liability recorded upon acquisition		67,501		$ 644
LessRay Software Technology [Member] \| Contingent Consideration Liabilities [Member]
Business Acquisition [Line Items]
Additions to contingent consideration liabilities with acquisitions		33,800
Ellipse Technologies Inc [Member]
Business Acquisition [Line Items]
Payments To Acquire Businesses Gross	$ 380,000	380,000
Business merger, potential future milestone payment	$ 30,000	$ 30,000
Business merger, potential future milestone percentage		3.00%
Ellipse Technologies Inc [Member] \| Contingent Consideration Liabilities [Member]
Business Acquisition [Line Items]
Additions to contingent consideration liabilities with acquisitions		$ 18,800
Convertible Notes due 2017 [Member] \| Quoted Price in Active Market (Level 1) [Member]
Business Acquisition [Line Items]
Debt instrument, fair value disclosure		102,700	$ 551,400
Principal amount of debt instruments offering to repurchase		339,100
Convertible Notes due 2021 [Member] \| Quoted Price in Active Market (Level 1) [Member]
Business Acquisition [Line Items]
Debt instrument, fair value disclosure		$ 827,600