Debt instrument maturity year.

No definition available.

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- Definition

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Balance Type:	credit
Period Type:	instant

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 944
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-Section S99
-Paragraph 1
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Balance Type:	credit
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- Definition

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

+ References

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-Topic 320
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-Paragraph 8A
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash received for fees during the current period. This element excludes cash proceeds from license fees.

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-Publisher FASB
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Balance Type:	debit
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- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

+ References

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-Name Accounting Standards Codification
-Topic 326
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Balance Type:	debit
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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.

+ Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Period Type:

Investments - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
Investments - Additional Information (Detail) - USD ($)	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Unrealized gains (losses) on equity Investments	$ (506,000)	$ (274,000)	$ (1,272,000)	$ 264,000
Impairments or adjustments equity investments under measurement alternative	0	0	0	0
Credit loss expenses	(21,000)	(275,000)	288,000	520,000
Investment in joint venture under the equity method	8,911,000		8,911,000		$ 11,448,000
Fluent [Member]
Schedule Of Available For Sale Securities [Line Items]
Investment in joint venture under the equity method	5,147,000		5,147,000		7,836,000
Fluent [Member] \| Joint Venture [Member]
Schedule Of Available For Sale Securities [Line Items]
Investment in joint venture under the equity method	2,323,000	10,090,000	2,323,000	10,090,000
Total fees charged			3,109,000	0
Fluent [Member] \| Joint Venture [Member] \| Accounts Receivable [Member]
Schedule Of Available For Sale Securities [Line Items]
Total fees charged					388,000
Fluent [Member] \| Joint Venture [Member] \| Accounts Payable [Member]
Schedule Of Available For Sale Securities [Line Items]
Total fees charged			441,000
Cannfections [Member]
Schedule Of Available For Sale Securities [Line Items]
Investment in joint venture under the equity method	3,764,000		3,764,000		3,612,000
Cannfections [Member] \| Joint Venture [Member]
Schedule Of Available For Sale Securities [Line Items]
Investment in joint venture under the equity method	0	3,600,000	0	3,600,000
Investment in Equities [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, allowance for credit loss	0		0		0
Credit loss expenses	0	$ 0	0	$ 0
Long-term Investments [Member] \| Investment in Equities [Member]
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities, Gross unrealized loss	$ 148,000		$ 148,000		$ 302,000
Convertible Debt Instrument [Member]
Schedule Of Available For Sale Securities [Line Items]
Convertible debt instruments contractual maturity			2022