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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Treasury Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Income (Loss) | Retained Earnings
--- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2013 | $ 666,090 | $ 410 | $ (367,121) | $ 750,918 | $ 927 | $ 280,956
Beginning Balance, shares (in shares) at Dec. 31, 2013 |  | 41,042,000 |  |  |  |
Beginning Balance, Treasury Stock, shares (in shares) at Dec. 31, 2013 |  |  | (17,814,000) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Adjustment for two-for-one stock split, effective December 21, 2016 |  | $ 410 |  | (410) |  |
Adjustment for two-for-one stock split, effective December 21, 2016 (in shares) |  | 41,042,000 |  |  |  |
Net income (loss) | 34,004 |  |  |  |  | 34,004
Other comprehensive income (loss), net of tax | (24,415) |  |  |  | (24,415) |
Issuance of common stock through employee stock purchase plan | 286 | $ 1 |  | 285 |  |
Issuance of common stock through employee stock purchase plan (in shares) |  | 12,000 |  |  |  |
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes | 13,803 | $ 12 |  | 13,791 |  |
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes (in shares) |  | 1,192,000 |  |  |  |
Share-based compensation | 14,554 |  |  | 14,554 |  |
Ending Balance at Dec. 31, 2014 | 704,322 | $ 833 | $ (367,121) | 779,138 | (23,488) | 314,960
Ending Balance, shares (in shares) at Dec. 31, 2014 |  | 83,288,000 |  |  |  |
Ending Balance, Treasury Stock, shares (in shares) at Dec. 31, 2014 |  |  | (17,814,000) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | (3,519) |  |  |  |  | (3,519)
Other comprehensive income (loss), net of tax | (24,414) |  |  |  |  |
Separation of SeaSpine | (167,229) |  |  |  | (1,667) | (165,562)
Other comprehensive income (loss), net of tax and SeaSpine | $ (22,747) |  |  |  | (22,747) |
Treasury Share purchases (in shares) | 0 |  | (16,000) |  |  |
Issuance of common stock | $ 219,680 | $ 80 |  | 219,600 |  |
Issuance of common stock, shares (in shares) |  | 8,006,000 |  |  |  |
Issuance of common stock through employee stock purchase plan | 231 |  |  | 231 |  |
Issuance of common stock through employee stock purchase plan (in shares) |  | 8,000 |  |  |  |
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes | 5,255 | $ 4 |  | 5,251 |  |
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes (in shares) |  | 412,000 |  |  |  |
Share-based compensation | 15,450 |  |  | 15,450 |  |
Ending Balance at Dec. 31, 2015 | $ 751,443 | $ 917 | $ (367,121) | 1,019,670 | (47,902) | 145,879
Ending Balance, shares (in shares) at Dec. 31, 2015 |  | 91,714,000 |  |  |  |
Ending Balance, Treasury Stock, shares (in shares) at Dec. 31, 2015 | (17,830,000) |  | (17,830,000) |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net income (loss) | $ 74,564 |  |  |  |  | 74,564
Other comprehensive income (loss), net of tax | $ (9,252) |  |  |  | (9,252) |
Treasury Share purchases (in shares) | 0 |  |  |  |  |
Treasury shares retirement | $ 0 | $ (178) | $ 367,121 | (366,943) |  |
Treasury shares retirement (in shares) |  | (17,830,000) | (17,830,000) |  |  |
Issuance of common stock through employee stock purchase plan | 391 | $ 1 |  | 390 |  |
Issuance of common stock through employee stock purchase plan (in shares) |  | 12,000 |  |  |  |
Settlement of convertible notes |  | $ 29 |  | (29) |  |
Settlement of convertible notes (in shares) |  | 2,946,000 |  |  |  |
Exercise of convertible note hedge | $ (123,100) |  | $ (123,051) | 123,051 |  |
Exercise of convertible note hedge (in shares) | (2,946,000) |  | (2,946,000) |  |  |
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes | $ 5,211 | $ 8 |  | 5,203 |  |
Issuance of common stock for vesting of share based awards, net of shares withheld for taxes (in shares) |  | 824,000 |  |  |  |
Share-based compensation | 17,310 |  |  | 17,310 |  |
Ending Balance at Dec. 31, 2016 | $ 839,667 | $ 777 | $ (123,051) | $ 798,652 | $ (57,154) | $ 220,443
Ending Balance, shares (in shares) at Dec. 31, 2016 |  | 77,666,000 |  |  |  |
Ending Balance, Treasury Stock, shares (in shares) at Dec. 31, 2016 | (2,946,000) |  | (2,946,000) |  |  |

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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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- Definition The change in equity as a result of a spin-off transaction (a regular or reverse spin-off) which is based on the recorded amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Spinoff -URI http://asc.fasb.org/extlink&oid=6749415 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 60 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6406278&loc=d3e26268-112671 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reverse Spinoff -URI http://asc.fasb.org/extlink&oid=6524171 + Details
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- Definition Amount of decrease of par value, additional paid in capital (APIC) and retained earnings of common and preferred stock retired from treasury when treasury stock is accounted for under the cost method. + 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(29)) -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 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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