Restructuring - Summary of Restructuring Activities (Detail) - USD ($) $ in Thousands	3 Months Ended	8 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring in February, 2016	$ 198	$ 1,217	$ 2,361
Accruals for retention bonus		1,126
Payments		(1,299)
Ending balance	1,044	1,044	1,044
Severance Accrual [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring in February, 2016		1,217
Payments		(766)
Ending balance	451	451	451
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Accruals for retention bonus		1,126
Payments		(533)
Ending balance	$ 593	$ 593	$ 593

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (SAB TOPIC 5.P.4(b))
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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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