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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 |  |  |  |  |  |  |  |  |  |  |

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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(v) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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