Section of debt instrument that was raised to cover the cost of new shares in an Employee Stock Ownership Plan (ESOP).

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Defined Benefit Plan, Distribution Amount

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No definition available.

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Defined Benefit Plan, Distribution Period

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The percent of each eligible employee's compensation which the employer contributes to the profit sharing plan, before any matching component.

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No definition available.

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Number of shares converted into the employee stock ownership plan.

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The total number of shares to be converted against the ratio established by the company.

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Employee Stock Ownership Plan Conversion Rate

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The minimum length of employment required of employees before they become eligible for the Employee Stock Ownership Plan.

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No definition available.

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Employee Stock Ownership Plan (ESOP), Minimum Service Hour Requirement

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The number of shares of company stock that were purchased and will be placed in the employee stock ownership plan.

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Employee Stock Ownership Plan (ESOP), Term Loan Principal Payable, Installments

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The minimum age required of employees before they become eligible for the Employee Stock Ownership Plan.

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Represents number of shares allocated per month under employee stock ownership plan.

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Number of shares purchased for the employee stock ownership plan.

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The total amount of shares that will become a part of the employee stock ownership plan.

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Represents employer loan to employee stock ownership plan.

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Represents employer Loan To employee stock ownership plan interest rate.

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

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Amount of cost for defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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Percentage employer matches of the employee's percentage contribution matched.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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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 nonvested award under share-based payment arrangement. Excludes share and unit options.

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

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The amount of plan compensation cost recognized during the period.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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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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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.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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

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

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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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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 grant-date fair value of options vested.

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Benefit Plans - Narrative (Details) $ / shares in Units, $ in Thousands			1 Months Ended	12 Months Ended
	Sep. 01, 2016	Jul. 16, 2015 USD ($) installments $ / shares shares	Jan. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) installments hour $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2016 shares	Dec. 31, 2017 $ / shares	Jun. 02, 2016 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESOP, eligibility, minimum employment period				1 year
ESOP, eligibility, minimum age				21 years
ESOP, minimum service hour requirement \| hour				1,000
Employer loan to ESOP \| $		$ 2,300		$ 2,000
ESOP, shares purchased (in shares)				202,342
ESOP, number of principal payment installments \| installments		80		48
ESOP employer loan, interest rate		3.25%		8.25%
ESOP, purchase of shares (in shares)		150,663
ESOP, conversion of stock (in shares)		202,342
ESOP, conversion rate (in shares)		1.1397
ESOP, conversion of stock shares issued (in shares)		230,609
ESOP, total shares for plan (in shares)		381,272
Additional funds to cover cost of purchasing shares \| $		$ 1,500
ESOP, number of shares allocated per month (in shares)					910
ESOP, compensation expense \| $				$ 181	$ 210
Exercise price per share, after conversion (in usd per share) \| $ / shares		$ 9.4323
Deferred Profit Sharing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual contributions per employee				80.00%
Employer matching contribution				50.00%
Employer matching contribution, percent of employees' gross pay				6.00%
Employer contribution percent				3.00%
Cost of The Plan \| $				$ 87	$ 88
Directors Retirement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined benefit plan, distribution amount \| $			$ 1,400
Directors Retirement Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined benefit plan, distribution period	12 years
Directors Retirement Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined benefit plan, distribution period	24 months
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price per share, after conversion (in usd per share) \| $ / shares				$ 13.56	$ 13.56		$ 13.27
Granted (in shares)				0	10,556
Granted (in usd per share) \| $ / shares				$ 0.00	$ 17.6500
Fair value of options granted (in dollars per share) \| $ / shares					$ 4.24
Total amount of compensation cost remaining to be recognized, unvested option grants \| $				$ 147	$ 233
Intrinsic value of options exercisable \| $				494	322
Intrinsic value, options outstanding \| $				821	472
Stock-based compensation expense \| $				$ 327	$ 328
2016 Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized for purchase				112,600				112,600
Shares remaining for future option grants (in shares)				13,597
Vesting period, options granted						5 years
Shares of restricted stock, awarded (in shares)						107,403
Restricted shares unvested and outstanding (in shares)				36,963
Fair value of restricted shares, unvested and outstanding \| $ / shares				$ 13.04
Compensation cost to be recognized, non-vested restricted stock \| $				$ 345
2016 Plan \| Share-based Payment Arrangement, Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized for purchase				281,499
Shares remaining for future option grants (in shares)				85,985
Risk-free interest rate					2.49%
Expected option life					6 years 182 days
Expected stock price volatility					16.53%
Dividend yield					0.00%
Weighted-average period for recognition					1 year 6 months
2016 Plan \| Share-based Payment Arrangement, Option \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period for options					10 years
2016 Plan \| Share-based Payment Arrangement, Option \| Annual Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, options granted					5 years
Vesting percentage, options granted					20.00%