v3.5.0.2

Summary of Significant Accounting Policies - Concentration Risk (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) item	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) item
Concentration of Credit Risk
Revenue	$ 51,960	$ 37,092	$ 148,514	$ 106,942
Accounts receivable, net	20,974		20,974		$ 975
Client A
Concentration of Credit Risk
Revenue	18,400	15,900	53,900	49,200
Accounts receivable, net	8,200		8,200		200
Client B
Concentration of Credit Risk
Revenue	8,700	5,700	25,500	16,000
Accounts receivable, net	5,100		5,100		$ 100
Client C
Concentration of Credit Risk
Revenue	5,500	$ 4,300	15,800	12,700
Accounts receivable, net	2,600		2,600
Client D
Concentration of Credit Risk
Revenue				$ 10,100
Accounts receivable, net	$ 2,500		$ 2,500
Revenue | Customer concentration risk | Client A
Concentration of Credit Risk
Percentage of concentration of credit risk	35.00%	43.00%	36.00%	46.00%
Revenue | Customer concentration risk | Client B
Concentration of Credit Risk
Percentage of concentration of credit risk	17.00%	15.00%	17.00%	15.00%
Revenue | Customer concentration risk | Client C
Concentration of Credit Risk
Percentage of concentration of credit risk	11.00%	12.00%	11.00%	12.00%
Revenue | Customer concentration risk | Client D
Concentration of Credit Risk
Percentage of concentration of credit risk				10.00%
Accounts receivable | Customer concentration risk | Client A
Concentration of Credit Risk
Percentage of concentration of credit risk			39.00%		18.00%
Accounts receivable | Customer concentration risk | Client B
Concentration of Credit Risk
Percentage of concentration of credit risk			24.00%		7.00%
Accounts receivable | Customer concentration risk | Client C
Concentration of Credit Risk
Percentage of concentration of credit risk			12.00%
Accounts receivable | Customer concentration risk | Client D
Concentration of Credit Risk
Percentage of concentration of credit risk			12.00%
Accounts receivable | Credit concentration risk
Concentration of Credit Risk
Number of additional clients who accounted for more than 10% | item			4		2

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Represents information pertaining to number of additional clients who accounted for more than 10% during the period.

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3-4)
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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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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

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Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(d))
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