Percentage of shares excess of combined voting power of parents and subsidiary.

No definition available.

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- Definition

Share based Compensation Arrangement by Share based Payment Award, Number of Shares Authorized and Unissued

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No definition available.

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- Definition

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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Date the declared dividend will be paid, in CCYY-MM-DD format.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Date the dividend to be paid was declared, in CCYY-MM-DD format.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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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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Unrecognized cost of unvested options awarded to employees as compensation.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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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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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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Restrictions on equity-based instruments during the vesting period, such as the inability to transfer unvested awards, are not taken into account in estimating the fair value of the award. However, restrictions that remain in effect after an award is vested, such as the inability to transfer or hedge vested options or a prohibition on the sale of outstanding vested shares (or other type of equity) for a period of time, affect the estimate of an award's fair value.

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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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No definition available.

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

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

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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Number of shares for which recognition of compensation cost was accelerated.

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No definition available.

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- Definition

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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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.

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Amount of stock repurchase plan authorized.

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No definition available.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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No definition available.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Share-Based Payments (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	6 Months Ended			12 Months Ended			31 Months Ended
	Mar. 17, 2016	Dec. 31, 1999	Jun. 30, 2005	Jun. 30, 2003	Jun. 30, 2002	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2002	Mar. 09, 2016	Dec. 12, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted						217,700	56,666	193,500
Stock options vesting description					The options granted subsequent to September 2002, all vesting schedules are based on 3 or 4-year vesting schedules, with either one-third or one-fourth vesting on the first anniversary and the remaining options vesting ratably over the remainder of the vesting term. Generally, directors and officers have 3-year vesting schedules and all other employees have 4-year vesting schedules. Additionally, in the event of a change in control or the occurrence of a corporate transaction, the Company’s Board of Directors has the authority to elect that all unvested options shall vest and become exercisable immediately prior to the event or closing of the transaction.
Share-based payment award, expiration period						10 years
Number of stock options shares outstanding						837,232	1,028,935	1,040,081				1,111,274
Weighted average per share fair value of option granted						$ 4.27	$ 5.27	$ 4.85
Total intrinsic value of options exercised						$ 2,824	$ 404	$ 1,337
Total pre-tax compensation cost related to stock options						628	552	401
Tax benefit compensation cost related to stock options						107	41	211
Unrecognized compensation cost related to stock options						$ 1,127
Unrecognized compensation cost related to stock options, recognized period						2 years 2 months 9 days
Percentage of shares excess of combined voting power of parents and subsidiary						5.00%
Number of stock options fair value purchased under the plan during the period						$ 87	$ 155
Percentage of common stock purchase of period at price equal to fair market value						85.00%
Percentage of fair value of common stock discount						15.00%
Stock repurchase program share amount								$ 2,598		$ 10,000
Stock repurchase program shares						542,259,000		272,767
Dividend per share						$ 0.05
Dividend declared date						Jan. 31, 2017
Dividend date to be paid						Mar. 01, 2017
Dividend date of record						Feb. 15, 2017
Average purchase price per share						$ 11.25
Directors And Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vested period					3 years
Other Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vested period					4 years
Board of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend declared date						Mar. 01, 2017
Dividend date to be paid						Jun. 01, 2017
Board of Directors [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend per share						$ 0.05
Board of Directors [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend per share						$ 0.07
Board of Directors [Member] \| Maximum [Member] \| March 1, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program share amount						$ 10,000
1998 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted		1,066,000							1,248,250
Stock options vested period		9 years 9 months 18 days							6 years
Stock options accelerated vesting shares			300,494	637,089
Maximum number of stock options grants						2,500,000
Number of stock options shares outstanding						150,000
Number of stock options shares authorized and unissued						0
1998 Incentive Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vested period						3 years
1998 Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vested period						4 years
2007 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of stock options grants											2,000,000
Number of stock options shares outstanding						700,232
Number of stock options shares authorized and unissued						826,268
2015 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options granted						475,893
Number of shares available for offerings						500,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options shares purchased under the plan during the period						9,140	14,982	82
Employee Stock Purchase Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options shares purchased under the plan during the period						2,500
Number of stock options fair value purchased under the plan during the period						$ 25
1998 Incentive Plan and 2007 Equity Incentive Plan [Member] \| Employees and Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program shares	225,542
Average purchase price per share	$ 7.77