Marketable securities and fair value measurements.

No definition available.

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- Definition

This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

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- Definition

Amount of gain (loss) recognized on the income statement for 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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- Definition

Balance held at close of period in number of shares.

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- Definition

Number of shares of affiliates held for management investment companies.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

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-Publisher FASB
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- Definition

Number of non-option equity instruments exercised by participants.

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Marketable Securities and Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jun. 30, 2015
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Carryover basis					$ 0	$ 0
Stock warrants exercised (shares)	284,091	0		0
Proceeds from warrant exercises	$ 902,000		$ 902,000
Decrease attributable to change in fair value of common stock warrants	$ 229,000	$ 423,000	$ 361,000	$ 227,000
Using Quoted Prices in Active Markets for Identical Assets (Level 1)
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Number of shares held in an affiliated entity (shares)	1,644,155		1,644,155
Using Quoted Prices in Active Markets for Identical Assets (Level 1) \| Common Stock
Marketable Securities and Fair Value Measurements (Textual) [Abstract]
Investment owned (shares)	395,758		395,758