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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Statement of Comprehensive Income [Abstract] |  |  |  |
Net income for common stock | $ 47,815 | $ 48,236 | $ 135,163 | $ 122,503
Net unrealized gains (losses) on securities: |  |  |  |
Net unrealized gains (losses) on securities arising during the period, net of (taxes) tax benefits of $1,094, $1,049, ($2,249) and $7,081 for the respective periods | (1,657) | (1,589) | 3,406 | (10,724)
Less: reclassification adjustment for net realized gains included in net income, net of taxes of nil, nil, $1,132 and $488 for the respective periods | 0 | 0 | (1,715) | (738)
Derivatives qualified as cash flow hedges: |  |  |  |
Less: reclassification adjustment to net income, net of tax benefits of $37, $37, $112 and $112 for the respective periods | 59 | 59 | 177 | 177
Retirement benefit plans: |  |  |  |
Less: amortization of transition obligation, prior service credit and net losses recognized during the period in net periodic benefit cost, net of tax benefits of $1,900, $3,697, $5,438 and $11,173 for the respective periods | 2,829 | 5,789 | 8,515 | 17,490
Less: reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $1,619, $3,284, $4,858 and $9,852 for the respective periods | (2,542) | (5,156) | (7,627) | (15,468)
Other comprehensive income (loss), net of taxes | (1,311) | (897) | 2,756 | (9,263)
Comprehensive income | $ 46,504 | $ 47,339 | $ 137,919 | $ 113,240

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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=6519514 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=16317811 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=28358780&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=6518256 + Details
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