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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 718
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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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No definition available.

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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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No definition available.

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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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Stock Based Compensation (Details) - $ / shares	3 Months Ended		6 Months Ended		12 Months Ended
Stock Based Compensation (Details) - $ / shares	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Options
Exercised (in shares)	(1,000)	(1,000)	(14,442)	(11,665)
Unearned ESOP Shares
Options
Outstanding at the beginning of the year			247,781
Exercised (in shares)			(14,442)
Outstanding at the ending of the year	233,339	255,030	233,339	255,030	247,781
Exercisable (in shares)	233,339		233,339
Weighted Average Exercise Price
Outstanding at the beginning of the year (in dollars per share)			$ 17.07
Exercise price (in dollars per share)			17.90
Outstanding at the ending of the year (in dollars per share)	$ 17.02	$ 17.09	17.02	$ 17.09	$ 17.07
Exercisable (in dollars per share)	$ 17.02		$ 17.02
Weighted Average Remaining Contractual Term			2 years 1 month 6 days		2 years 5 months 19 days