Fair Value Measurements (Schedule of Fair Value of Assets and Liabilities not Subject to Fair Value Recognition) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Notes Receivable, Fair Value Disclosure	$ 57,300	$ 70,000
Assets, Fair Value Disclosure	493,879	603,291
Liabilities:
Notes Payable, Carrying Value	27,250	124,644
December 2021 Notes [Member]
Liabilities:
Notes Payable, Carrying Value	16,950	124,644
Wellstat Note Receivable [Member]
Assets
Notes receivable, Carrying Value	50,191	50,191
Hyperion [Member]
Assets
Notes receivable, Carrying Value	1,200	1,200
CareView [Member]
Assets
Notes receivable, Carrying Value	690	11,458
Fair Value Level 2 [Member]
Assets
Assets, Fair Value Disclosure	14,152	62
Liabilities:
Notes payable, Fair Value	33,931	151,356
Fair Value Level 2 [Member] \| December 2021 Notes [Member]
Liabilities:
Notes payable, Fair Value	20,978	151,356
Fair Value Level 2 [Member] \| Wellstat Note Receivable [Member]
Assets
Notes Receivable, Fair Value Disclosure	0	0
Fair Value Level 2 [Member] \| Hyperion [Member]
Assets
Notes Receivable, Fair Value Disclosure	0	0
Fair Value Level 2 [Member] \| CareView [Member]
Assets
Notes Receivable, Fair Value Disclosure	0	0
Fair Value Level 3 [Member]
Assets
Notes Receivable, Fair Value Disclosure	57,279	69,980
Assets, Fair Value Disclosure	266,196	376,510
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] \| Wellstat Note Receivable [Member]
Assets
Notes Receivable, Fair Value Disclosure	55,389	57,322
Fair Value Level 3 [Member] \| Hyperion [Member]
Assets
Notes Receivable, Fair Value Disclosure	1,200	1,200
Fair Value Level 3 [Member] \| CareView [Member]
Assets
Notes Receivable, Fair Value Disclosure	690	11,458
Assets [Member]
Assets
Assets, Fair Value Disclosure	52,081	62,849
Assets [Member] \| Fair Value Level 2 [Member]
Assets
Notes Receivable, Fair Value Disclosure	$ 0	$ 0

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- Definition

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

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- 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.

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Amount, before allowance for credit loss, of financing receivable, classified as noncurrent.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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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.

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- 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.

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