Share-based Compensation - Summary of Allocated Share-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based compensation recognized
Share-based compensation expense	$ 218	$ 563	$ 432	$ 2,246
Capitalized in intangible assets	135	236	316	629
Total	353	799	748	2,875
Sales and Marketing Expenses
Share-based compensation recognized
Share-based compensation expense	54	59	95	221
General and Administrative Expenses
Share-based compensation recognized
Share-based compensation expense	$ 164	$ 504	$ 337	$ 2,025

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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Represents the compensation cost capitalized during the period arising from equity-based compensation arrangements (for example, shares of stock, units, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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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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Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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