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Stock Awards - Stock Option Activity (Details) - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of period (in shares)	377,950	318,000
Granted (in shares)	68,150	62,150
Exercised (in shares)	719	500
Forfeited (in shares)	26,300	1,700
Options outstanding, end of period (in shares)	419,081	377,950
Options exercisable, end of period (in shares)	304,748	249,467
Outstanding, beginning of period, average exercise price (in dollars per share)	$ 9.80	$ 9.43
Granted, average exercise price (in dollars per share)	9.99	11.71
Exercised, average exercise price (in dollars per share)	8.30	8.12
Forfeited, average exercise price (in dollars per share)	11.96	11.15
Options outstanding, end of period, average exercise price (in dollars per share)	9.70	9.80
Options exercisable, end of period, average exercise price (in dollars per share)	$ 9.14	$ 8.72

X

- Definition

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.

+ References

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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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- Definition

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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- Definition

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

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

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