Equity-Based Compensation - Summary of Equity-Based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 27,034	$ 23,889	$ 6,411
Unrecognized equity-based compensation	28,909	40,215	10,420
Parent company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	23,443	23,054	5,712
Unrecognized equity-based compensation	20,039	38,316	8,928
Subsidiaries
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 3,591	835	699
Weighted average years remaining of equity-based compensation	2 years 10 months 2 days
Unrecognized equity-based compensation	$ 8,870	1,899	1,492
DSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 234	444	377
Weighted average years remaining of equity-based compensation	2 years 11 months 12 days
Unrecognized equity-based compensation	$ 968	17	64
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 22,811	21,818	2,958
Weighted average years remaining of equity-based compensation	2 years 15 days
Unrecognized equity-based compensation	$ 18,946	37,780	7,526
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 398	792	2,377
Weighted average years remaining of equity-based compensation	11 months 19 days
Unrecognized equity-based compensation	$ 125	519	1,338
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	157	76	63
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	428	160	156
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	25,967	23,509	6,081
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 482	$ 144	$ 111

Unrecognized cost of unvested share-based compensation awards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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