Equity-Based Compensation - Summary of Equity-Based Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 14,058	$ 25,944	$ 23,747
Unrecognized equity-based compensation	16,733	24,927	40,115
Parent company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	11,859	23,443	23,054
Unrecognized equity-based compensation	10,507	20,039	38,316
Subsidiaries
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	2,199	2,501	693
Unrecognized equity-based compensation	$ 6,226	4,888	1,799
Weighted average years remaining of equity-based compensation	2 years 10 months 3 days
DSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 341	234	444
Unrecognized equity-based compensation	$ 430	968	17
DSUs \| Parent company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average years remaining of equity-based compensation	1 year 5 months 12 days
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 11,390	22,811	21,818
Unrecognized equity-based compensation	$ 9,960	18,946	37,780
Restricted stock \| Parent company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average years remaining of equity-based compensation	1 year 3 months 1 day
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 128	398	792
Unrecognized equity-based compensation	$ 117	125	519
SARs \| Parent company
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average years remaining of equity-based compensation	3 years 3 months
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 107	140	69
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	315	330	145
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	13,174	25,009	23,395
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 462	$ 465	$ 138

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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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=66902209&loc=d3e3602-108585

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No definition available.

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