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Defined Benefit Plan, Annual Vesting Percentage

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Defined Benefit Plan, Benefit Obligation, Percent Of Average Executive Base Salary

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Defined Benefit Plan, Benefit Obligation, Percent Of Average Executive Base Salary, Adjustment Thereafter

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- Definition

Defined Benefit Plan, Number of Annual Payments After Separation

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Defined Benefit Plan, Payment Term After Separation

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- Definition

Interest paid on deferred fees

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Options Exercised Forfeited Or Expired Number

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- Definition

Share Based Compensation Arrangement By ShareBased Payment Award Award Expiration Period

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- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them.

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- Definition

Commitment made to pay deferred cash remuneration expressed as a percentage of the individual's base salary.

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- Definition

Amount of distribution made to individual in accordance with deferred compensation arrangement.

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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- Definition

Face value (death benefits) of the life insurance policies underlying the life settlement contracts accounted for under the fair value method.

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- Definition

Period expense related to postemployment benefits.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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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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- Definition

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

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- Definition

Percentage of vesting of share-based compensation awards.

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Employee Benefit Plans - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
Employee Benefit Plans - Narrative (Details) $ in Thousands	Jun. 30, 2019 USD ($) shares	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) installment shares	Jun. 30, 2018 USD ($)	Apr. 25, 2019 shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, outstanding (in shares) \| shares	581,411		581,411			584,178
Defined contribution plan employer discretionary contribution amount	$ 193	$ 176	$ 339	$ 312
Deferred fees	21	9	332	260
Interest paid on deferred fees	27	17	50	32
Distributions paid	2	3	6	7
Defined benefit plans future payments	$ 3,029	$ 1,424	$ 3,029	$ 1,424		$ 2,747	$ 1,187
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement guaranteed award percentage			100.00%
Executive Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement guaranteed award percentage			100.00%
Supplemental Employee Retirement Plan \| President And Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Retirement benefit payable as percent of average Executive's base salary for 36 months preceding separation from service	60.00%		60.00%
Payment term after separation			36 months
Retirement benefit payable as percent of average Executive's base salary for 36 months preceding separation from service, adjustment thereafter	2.00%		2.00%
Number of annual payments after separation \| installment			15
Discount rate used to calculate the present value of the benefit obligation	4.00%		4.00%
Vesting percentage			3.00%
Award vesting rights, percentage			100.00%
Other Postretirement Benefit Plan \| Executive Management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement guaranteed award percentage			7.50%
Award vesting rights, percentage			100.00%
Accrued expense under the plan	$ 55		$ 55
Life insurance plan with a post retirement death benefit	250		250
Life insurance plan aggregate expenses	$ 1		$ 2
Other Postretirement Benefit Plan \| Executive Management \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement guaranteed award percentage			15.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Options, award expiration period			10 years
Number of shares authorized \| shares	2,831,019		2,831,019
Options, outstanding (in shares) \| shares	581,411		581,411
Options, exercised forfeited or expired (shares) \| shares			1,749,608
Number of shares available for grant \| shares	500,000		500,000
Compensation cost not yet recognized	$ 1,100		$ 1,100
Compensation cost recognition weighted average period			2 years 2 months 12 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Number of shares authorized \| shares	1,018,157		1,018,157
Number of shares available for grant \| shares	500,000		500,000
Compensation cost recognition weighted average period			2 years 9 months 18 days
Nonvested awards, compensation not yet recognized, awards other than options	$ 1,600		$ 1,600
2019 Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant \| shares					500,000