A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Price of a single share of a number of saleable stocks of a company.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Stock-Based Compensation, Stock Option Activity (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Assumptions used to estimate the fair values of the stock options granted [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%
Additional Disclosures [Abstract]
Proceeds from stock option exercises			$ 61,725	$ 2,133,396
Minimum
Assumptions used to estimate the fair values of the stock options granted [Abstract]
Risk-free interest rate			0.29%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			5 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			39.50%
Maximum
Assumptions used to estimate the fair values of the stock options granted [Abstract]
Risk-free interest rate			1.61%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			6 years 3 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			41.50%
Stock Options and Restricted Stock Awards \| Restructuring
Additional Disclosures [Abstract]
Stock-based compensation expense			$ 190,000
Restricted stock awards
Additional Disclosures [Abstract]
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 578,000		$ 578,000
Recognized compensation period			1 year
Restricted stock awards \| General and Administrative
Additional Disclosures [Abstract]
Stock-based compensation expense	$ 178,000	$ 146,000	$ 515,000	146,000
Stock options
Stock Options Activity [Roll Forward]
Outstanding, beginning of period (in shares)			189,187
Grants (in shares)			202,000
Exercised (in shares)			(1,500)
Cancelled (in shares)			(147,500)
Outstanding, end of period (in shares)	242,187		242,187		189,187
Exercisable, end of period (in shares)	42,687		42,687
Weighted Average Exercise Price [Roll Forward]
Outstanding, beginning of period (in dollars per share)			$ 46.79
Grants (in dollars per share)			61.92
Exercised (in dollars per share)			41.15
Cancelled (in dollars per share)			56.51
Outstanding at end of year (in dollars per share)	$ 56.49		56.49		$ 46.79
Exercisable, end of period (in dollars per share)	$ 33.45		$ 33.45
Weighted Average Remaining Contractual Term [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term			8 years 4 months 6 days		8 years 7 months 13 days
Exercisable			2 years 9 months 7 days
Aggregate Intrinsic Value [Roll Forward]
Outstanding, beginning of period			$ 1,920,684
Outstanding, end of period	$ 0		0		$ 1,920,684
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 827,256		$ 827,256
Additional Disclosures [Abstract]
Weighted average grant date fair value of stock granted (in dollars per share)			$ 61.92
Proceeds from stock option exercises			$ 100,000	2,100,000
Closing price of common stock (in dollars per share)	$ 52.83		$ 52.83
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 4,400,000		$ 4,400,000
Recognized compensation period			8 years 4 months 6 days
Stock options \| General and Administrative
Additional Disclosures [Abstract]
Stock-based compensation expense	$ 333,000	$ 114,000	$ 469,000	$ 374,000