Number of active stock based compensation plans.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Duration of Performance Period

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Number of Shares

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Offering Period

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No definition available.

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- Definition

Stock plans.

+ References

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.

+ 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

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- Definition

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.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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).

+ 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 (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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).

+ 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 (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

No definition available.

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- Definition

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

+ 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 (d)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

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

+ References

No definition available.

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Stock Plans (Details Textual)	3 Months Ended		6 Months Ended
Stock Plans (Details Textual)	Jun. 30, 2016 USD ($) share_based_compensation_plan $ / shares shares	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2016 USD ($) share_based_compensation_plan shares $ / shares	Jun. 30, 2015 USD ($) $ / shares shares
Stock Plans (Textual) [Abstract]
Stock-based compensation plans \| share_based_compensation_plan	2		2
Stock options granted during the period \| shares		33,546	0	263,203
Average grant date fair value per share \| $ / shares		$ 2.74		$ 3.56
Stock-based compensation expense	$ 1,459,000	$ 1,011,000	$ 2,662,000	$ 1,850,000
Stock options
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	4,000	57,000	85,000	80,000
Restricted stock awards
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	300,000	500,000	$ 9,000	1,000,000
Director restricted stock unit awards
Stock Plans (Textual) [Abstract]
Restricted stock unit vesting period (in years)			1 year
Restricted stock unit awards
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	$ 745,000	$ 370,000	$ 1,481,000	$ 674,000
Restricted stock unit vesting period (in years)			4 years
Number of unrestricted share of common stock to be received upon vesting \| shares			1
Restricted stock units, granted \| shares	152,417	98,149	1,187,631	768,095
Restricted stock unit awards \| Service-based
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	$ 536,000	$ 363,000	$ 1,069,000	$ 575,000
Restricted stock units, granted \| shares	122,085	74,275	854,912	553,264
Weighted average grant date fair value per share \| $ / shares	$ 5.10	$ 6.00	$ 5.59	$ 7.14
Performance restricted stock unit awards
Stock Plans (Textual) [Abstract]
Restricted stock units, granted \| shares	30,332	23,874	332,719	214,831
Weighted average grant date fair value per share \| $ / shares	$ 7.08	$ 6.03	$ 7.50	$ 7.19
Performance restricted stock unit awards \| Market-condition
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	$ 180,000	$ 34,000	$ 371,000	$ 67,000
Restricted stock units, granted \| shares	30,332		286,495
Performance restricted stock unit awards \| Performance Period 1
Stock Plans (Textual) [Abstract]
Performance periods			1 year
Performance restricted stock unit awards \| Performance Period 2
Stock Plans (Textual) [Abstract]
Performance periods			2 years
Performance restricted stock unit awards \| Performance Period 3
Stock Plans (Textual) [Abstract]
Performance periods			3 years
Employee stock purchase plan
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	$ 54,000	$ 57,000	$ 135,000	$ 140,000
Weighted average grant date fair value per share \| $ / shares			$ 2.27	$ 5.97
Discount rate from market value on offering date			85.00%
Offering period			6 months
Bonus stock award
Stock Plans (Textual) [Abstract]
Stock-based compensation expense	$ 300,000		$ 900,000
Maximum \| Performance restricted stock unit awards \| Market-condition
Stock Plans (Textual) [Abstract]
Potential vesting percentages			200.00%
Minimum \| Performance restricted stock unit awards \| Market-condition
Stock Plans (Textual) [Abstract]
Potential vesting percentages			0.00%