Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Accelerated Vesting, Percent

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=96867065&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=96867065&loc=d3e5070-113901

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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.

+ References

No definition available.

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

+ 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 (h)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Stock-Based Compensation - Operating Expense Categories (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Sep. 20, 2017	Aug. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stock-Based Compensation Expense
Stock-based compensation expense			$ 5,394	$ 3,900	$ 4,007
Incremental share-based compensation expense related to modification	$ 729	$ 45
Percentage of unvested shares with accelerated vesting due to modification	100.00%
Continuing Operations
Stock-Based Compensation Expense
Stock-based compensation expense			4,721	2,486	2,456
Continuing Operations \| Technology and development
Stock-Based Compensation Expense
Stock-based compensation expense			615	459	301
Continuing Operations \| Sales and marketing
Stock-Based Compensation Expense
Stock-based compensation expense			2,062	476	472
Continuing Operations \| General and administrative
Stock-Based Compensation Expense
Stock-based compensation expense			2,044	1,551	1,683
Discontinued Operations
Stock-Based Compensation Expense
Stock-based compensation expense			$ 673	$ 1,414	$ 1,551