No definition available.

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

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) more than one year from the balance sheet date. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References

+ Details

Name:	us-gaap_NotesAndLoansReceivableGrossNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_NotesPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

+ References

+ Details

Name:	us-gaap_NotesReceivableFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair Value Measurements (Schedule of Fair Value of Assets and Liabilities not Subject to Fair Value Recognition) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets
Notes receivable, Fair Value	$ 107,400	$ 109,200
Assets, Fair Value Disclosure	497,387	499,260
Liabilities:
Notes Payable, Carrying Value	232,443	253,828	$ 444,771
Series 2012 Notes [Member]
Liabilities:
Notes Payable, Carrying Value	0	0	22,261
May 2015 Notes [Member]
Liabilities:
Notes Payable, Carrying Value	0	0	153,235
February 2018 Notes [Member]
Liabilities:
Notes Payable, Carrying Value	121,595	228,862	269,275
December 2021 Notes [Member]
Liabilities:
Notes Payable, Carrying Value	110,848	0	$ 0
Term Loan [Member]
Liabilities:
Notes Payable, Carrying Value	0	24,966
Wellstat Note Receivable [Member]
Assets
Notes receivable, Carrying Value	50,191	50,191
Hyperion [Member]
Assets
Notes receivable, Carrying Value	1,200	1,200
LENSAR Note Receivable [Member]
Assets
Notes receivable, Carrying Value	43,909	42,271
Direct Flow Medical Note Receivable [Member]
Assets
Notes receivable, Carrying Value	10,000	51,852
Paradigm Spine [Member]
Assets
Notes receivable, Carrying Value	0	53,973
Kaleo [Member]
Assets
Notes receivable, Carrying Value	146,685	146,778
CareView [Member]
Assets
Notes receivable, Carrying Value	18,965	18,640
Fair Value Level 2 [Member]
Assets
Assets, Fair Value Disclosure	95,065	5,255
Liabilities:
Notes payable, Fair Value	245,981	197,946
Fair Value Level 2 [Member] \| February 2018 Notes [Member]
Liabilities:
Notes payable, Fair Value	123,918	197,946
Fair Value Level 2 [Member] \| December 2021 Notes [Member]
Liabilities:
Notes payable, Fair Value	122,063	0
Fair Value Level 2 [Member] \| Term Loan [Member]
Liabilities:
Notes payable, Fair Value	0	0
Fair Value Level 2 [Member] \| Wellstat Note Receivable [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 2 [Member] \| Hyperion [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 2 [Member] \| LENSAR Note Receivable [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 2 [Member] \| Direct Flow Medical Note Receivable [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 2 [Member] \| Paradigm Spine [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 2 [Member] \| Kaleo [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 2 [Member] \| CareView [Member]
Assets
Notes receivable, Fair Value	0	0
Fair Value Level 3 [Member]
Assets
Notes receivable, Fair Value	269,099	372,314
Assets, Fair Value Disclosure	402,318	399,204
Liabilities:
Notes payable, Fair Value	0	25,000
Fair Value Level 3 [Member] \| February 2018 Notes [Member]
Liabilities:
Notes payable, Fair Value	0	0
Fair Value Level 3 [Member] \| December 2021 Notes [Member]
Liabilities:
Notes payable, Fair Value	0	0
Fair Value Level 3 [Member] \| Term Loan [Member]
Liabilities:
Notes payable, Fair Value	0	25,000
Fair Value Level 3 [Member] \| Wellstat Note Receivable [Member]
Assets
Notes receivable, Fair Value	52,260	55,970
Fair Value Level 3 [Member] \| Hyperion [Member]
Assets
Notes receivable, Fair Value	1,200	1,200
Fair Value Level 3 [Member] \| LENSAR Note Receivable [Member]
Assets
Notes receivable, Fair Value	43,900	42,618
Fair Value Level 3 [Member] \| Direct Flow Medical Note Receivable [Member]
Assets
Notes receivable, Fair Value	10,000	51,992
Fair Value Level 3 [Member] \| Paradigm Spine [Member]
Assets
Notes receivable, Fair Value	0	54,250
Fair Value Level 3 [Member] \| Kaleo [Member]
Assets
Notes receivable, Fair Value	142,539	146,789
Fair Value Level 3 [Member] \| CareView [Member]
Assets
Notes receivable, Fair Value	19,200	19,495
Assets [Member]
Assets
Assets, Fair Value Disclosure	270,950	364,905
Assets [Member] \| Fair Value Level 2 [Member]
Assets
Notes receivable, Fair Value	$ 0	$ 0