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Convertible Senior Notes | 6 Months Ended
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Jun. 30, 2016
Debt Disclosure [Abstract] |
Convertible Senior Notes | Convertible Senior Notes In May 2005, we issued $250.0 million aggregate principal amount of 3.625% convertible senior notes due 2025 (“3.625% convertible senior notes”), and in November 2005, we issued $300.0 million aggregate principal amount of 5.875% convertible senior notes due 2035 ("5.875% convertible senior notes"). The 5.875% convertible senior notes are (and, prior to redemption, the 3.625% convertible senior notes were) unsecured, subordinate to existing and future secured obligations and structurally subordinate to existing and future claims of our subsidiaries' creditors. These notes (net of repurchases since the issuance dates) are reflected within convertible senior notes on our consolidated balance sheets. No put rights exist under our 5.875% convertible senior notes. In June 2016 we repurchased $4.5 million aggregate principal amount of outstanding 5.875% convertible senior notes for $2.0 million plus accrued interest from unrelated third parties. The purchase resulted in a gain of $1.0 million (net of the notes' applicable share of deferred costs, which were written off in connection with the repurchases). Upon acquisition, the notes were retired. In May 2015 we redeemed the remainder of the outstanding 3.625% convertible senior notes. Subsequent to this redemption, only our 5.875% convertible senior notes remain outstanding. The following summarizes (in thousands) components of our consolidated balance sheets associated with our convertible senior notes:
| As of
| June 30, 2016 |  | December 31, 2015
Face amount of 5.875% convertible senior notes | 88,780 |  |  | 93,280 |
Discount | (26,877 | ) |  | (28,497 | )
Net carrying value | $ | 61,903 |  |  | $ | 64,783 |
Carrying amount of equity component included in additional paid-in capital | $ | 108,714 |  |  | $ | 108,714 |
Excess of instruments’ if-converted values over face principal amounts | $ | — |  |  | $ | — |

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- Definition The entire disclosure for long-term debt. + 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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