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Subsidiary Guarantors - Schedule of Consolidating Statement of Comprehensive Loss (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items] |  |
Net loss | $ (7,614) | $ (7,963)
Other comprehensive loss, net of tax: |  |
Unrealized loss resulting from changes in fair value of marketable securities | (83) | (34)
Other comprehensive loss, net of tax | (83) | (34)
Comprehensive loss | (7,697) | (7,997)
Less: Comprehensive (loss) income attributable to noncontrolling interests | (6) | 1,308
Comprehensive (loss) income attributable to common stockholders | (7,691) | (9,305)
Parent [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net loss | (7,608) | (9,271)
Other comprehensive loss, net of tax: |  |
Comprehensive loss | (7,608) | (9,271)
Comprehensive (loss) income attributable to common stockholders | (7,608) | (9,271)
Guarantors [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net loss | 2,264 | 564
Other comprehensive loss, net of tax: |  |
Unrealized loss resulting from changes in fair value of marketable securities | (83) | (34)
Other comprehensive loss, net of tax | (83) | (34)
Comprehensive loss | 2,181 | 530
Comprehensive (loss) income attributable to common stockholders | 2,181 | 530
Non-Guarantors [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net loss | (12) | 2,668
Other comprehensive loss, net of tax: |  |
Comprehensive loss | (12) | 2,668
Less: Comprehensive (loss) income attributable to noncontrolling interests | (6) | 1,308
Comprehensive (loss) income attributable to common stockholders | (6) | 1,360
Elimination [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net loss | (2,258) | (1,924)
Other comprehensive loss, net of tax: |  |
Comprehensive loss | (2,258) | (1,924)
Comprehensive (loss) income attributable to common stockholders | $ (2,258) | $ (1,924)

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831223 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 + Details
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- Definition Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 + Details
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