Cash credit entitlements as a percent of grant.

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- Definition

Restricted stock as a percent of grant.

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Installments

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans

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- Definition

The Unrecognized expense associated with the restricted stock grants and cash entitlements.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Discount rate from fair value on offering date that participants pay for shares.

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

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Percentage of vesting of share-based compensation awards.

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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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Equity Plans and Equity Based Compensation (Additional Information) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($) Plan shares	Sep. 30, 2017 USD ($) shares	Sep. 30, 2018 USD ($) installment Plan shares	Sep. 30, 2017 USD ($) shares	Dec. 31, 2017 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of plans \| Plan	3		3
Number of shares reserved for grant (in shares) \| shares	386,754		386,754
Number of options granted (in shares) \| shares	0	0	0	0
Stock compensation expense \| $	$ 167,000	$ 155,000	$ 509,000	$ 495,000
Stock granted during period percentage			60.00%
Stock cash credit entitlement percentage			40.00%
Number of equal installments \| installment			3
Stock granted during period (in shares) \| shares	180	390	35,490	38,490
Unrecognized stock expenses in restricted stock \| $			$ 2,356,000	$ 2,277,000
Installment 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period percentage			33.30%
Installment 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period percentage			33.30%
Installment 3
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period percentage			33.30%
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period percentage			100.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense \| $	$ 0	$ 0	$ 0	0
Unrecognized compensation expense \| $	$ 0	0	$ 0	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock awards (in shares) \| shares	79,981		79,981		46,306
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for grant (in shares) \| shares	557,203		557,203
Stock compensation expense \| $	$ 39,000	32,000	$ 39,000	32,000
Unrecognized compensation expense \| $	$ 0	$ 0	$ 0	$ 0
Discount from market price, offering date			95.00%
Number of shares authorized provided by the plan (in shares) \| shares	750,000		750,000