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Summary of Operating Loss Carryforwards (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	$ 86,593
Foreign Operating Loss Carryforwards	6,529
2017
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	10,245
2018
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	8,562
2019
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	983
2020
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	1,248
2021
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	3,549
2022-2026
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	18,044
2027-2031
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	38,498
Beyond 2031
Operating Loss Carryforwards [Line Items]
State Operating Loss Carryforwards	5,464
Foreign Operating Loss Carryforwards	129
Non-Expiring
Operating Loss Carryforwards [Line Items]
Foreign Operating Loss Carryforwards	$ 6,400

X

- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 25
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Section 25
-Paragraph 20
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