Percent of payout for performance based stock units

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- Definition

Remaining contract life of exercisable stock option.

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No definition available.

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Remaining contract life of outstanding stock options.

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- Definition

Amount of cost capitalized for award under share-based payment arrangement.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

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- References

No definition available.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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

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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).

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- Definition

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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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

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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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

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

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ References

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

+ References

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

+ References

No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

+ References

No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Share-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended		6 Months Ended
	Jun. 30, 2019	May 21, 2019	Feb. 20, 2018	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Apr. 02, 2019	Dec. 31, 2018
Share-based Compensation (Details Textual)
Stock-based compensation expenses						$ 3,339	$ 2,675
Share-based compensation (capitalized)				$ 100	$ 100	$ 300	200
Share-based Payment Arrangement, Option - Equity Exchange Award [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation								$ 1,200
Stock Option Activity
Options forfeited, shares						(201,406)
Options forfeited, weighted average share price						$ 31.14
Share-based Payment Arrangement, Option [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation	$ 2,200			2,200		$ 2,200
Stock option award outstanding aggregate intrinsic value	$ 0			$ 0		0
Remaining contract life of outstanding stock options.	6 years 6 months
Remaining contract life of exercisable stock option	5 years
Stock option award exercisable aggregate intrinsic value						$ 0
Stock Option Activity
Options outstanding, beginning of period, shares	369,985			369,985		369,985			644,575
Options outstanding, beginning of period, weighted average price	$ 27.59			$ 27.59		$ 27.59			$ 28.28
Options forfeited, shares						(4,197)
Options forfeited, weighted average share price						$ 27.00
Options canceled, shares						(68,987)
Options canceled, weighted average price						$ 23.69
Options exercisable, end of period, shares	130,601			130,601		130,601
Options exercisable, end of period, weighted average price	$ 28.42			$ 28.42		$ 28.42
Restricted Stock Units (RSUs) [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation	$ 7,100			$ 7,100		$ 7,100
Unrecognized compensation expense weighted-average period						2 years 2 months
Restricted stock activity
Restricted shares outstanding, beginning of period, shares						340,678
Restricted shares outstanding, beginning of period, weighted average price						$ 27.64
Restricted shares granted, shares						115,957
Restricted shares granted, weighted average price						$ 20.13
Restricted shares forfeited, shares						(16,342)
Restricted shares forfeited, weighted average price						$ 26.81
Restricted shares vested, shares						(80,425)
Restricted shares vested, weighted average price						$ 26.46
Restricted shares outstanding, end of period, shares	434,746			434,746		434,746
Restricted shares outstanding, end of period, weighted average price	$ 23.14			$ 23.14		$ 23.14
Restricted Stock Units (RSUs) - Equity Exchange Award [Member]
Restricted stock activity
Restricted shares granted, shares						99,500
Restricted shares granted, weighted average price						$ 16.70
Restricted shares forfeited, shares						(24,622)
Restricted shares forfeited, weighted average price						$ 31.14
Performance-based stock unit [Member]
Share-based Compensation (Details Textual)
Stock option award unrecognized compensation	$ 3,500			$ 3,500		$ 3,500
Unrecognized compensation expense weighted-average period	2 years 4 months
Restricted stock activity
Restricted shares granted, shares		99,500	30,700
Restricted shares granted, weighted average price		$ 18.86	$ 41.66
Restricted shares vested, shares						0
Percent of payout for performance based stock units	100.00%	112.90%	150.61%	100.00%		100.00%
Minimum [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation (Details Textual)
Stock option award vesting period						1 year
Minimum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation (Details Textual)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term						1 year
Minimum [Member] \| Performance-based stock unit [Member]
Restricted stock activity
Percent of payout for performance based stock units		0.00%	0.00%
Maximum [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation (Details Textual)
Stock option award vesting period						5 years
Maximum [Member] \| Restricted Stock Units (RSUs) [Member]
Share-based Compensation (Details Textual)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term						5 years
Maximum [Member] \| Performance-based stock unit [Member]
Share-based Compensation (Details Textual)
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term						3 years
Restricted stock activity
Percent of payout for performance based stock units		200.00%	200.00%
General and Administrative Expense [Member]
Share-based Compensation (Details Textual)
Stock-based compensation expenses				$ 1,600	$ 1,300	$ 3,300	$ 2,700