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Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Accumulated Other Comprehensive Income [Member] | Retained Earnings [Member]
--- | --- | --- | --- | --- | ---
Stockholders' equity at beginning of period at Dec. 31, 2015 | $ 1,944,535 | $ 81,354 | $ 630,367 | $ 201,663 | $ 1,031,151
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | (30,133) |  |  |  | (30,133)
Other comprehensive income | 691,569 |  |  | 691,569 |
Share-based compensation | 3,889 |  | 3,889 |  |
Issuance of common stock under compensation plans | 3,531 | 832 | 2,699 |  |
Issuance of common stock to settle warrants that have reached their expiration | (1) | 93 | (94) |  |
Stockholders' equity at end of period at Jun. 30, 2016 | 2,613,390 | 82,279 | 636,861 | 893,232 | 1,001,018
Stockholders' equity at beginning of period at Dec. 31, 2016 | 2,291,595 | 88,001 | 770,344 | 339,966 | 1,093,284
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | 80,885 |  |  |  | 80,885
Other comprehensive income | 270,156 |  |  | 270,156 |
Share-based compensation | 4,154 |  | 4,154 |  |
Issuance of common stock under compensation plans | 4,618 | 740 | 3,878 |  |
Stockholders' equity at end of period at Jun. 30, 2017 | $ 2,651,408 | $ 88,741 | $ 778,376 | $ 610,122 | $ 1,174,169

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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