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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Statement of Comprehensive Income [Abstract] |  |  |  |
Net income (loss) | $ 943 | $ (10,378) | $ (7,021) | $ (23,988)
Other comprehensive income, net of tax: |  |  |  |
Unrealized gain (loss) resulting from changes in fair value of marketable securities | 3 | 6 | (31) | 3
Other comprehensive income (loss), net of tax | 3 | 6 | (31) | 3
Comprehensive income (loss) | 946 | (10,372) | (7,052) | (23,985)
Less: Comprehensive (loss) income attributable to noncontrolling interests | (82) | (3,723) | 1,226 | (3,910)
Comprehensive income (loss) attributable to common stockholders | $ 1,028 | $ (6,649) | $ (8,278) | $ (20,075)

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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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