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Shareholders' Equity | 12 Months Ended
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Dec. 31, 2014
Stockholders' Equity |
Shareholders' Equity | NOTE 13 — Shareholders' Equity Share count and par value data related to shareholders' equity are as follows:
|  | As of |
|  | December 31, 2014 |  | December 31, 2013 |
Preferred Stock |  |  |  |  |  |  |
Par value per share |  | $ | No par value |  | $ | No par value |
Shares authorized |  |  | 25,000,000 |  |  | 25,000,000 |
Shares outstanding |  |  | — |  |  | — |
Common Stock |  |  |  |  |  |  |
Par value per share |  | $ | No par value |  | $ | No par value |
Shares authorized |  |  | 75,000,000 |  |  | 75,000,000 |
Shares issued |  |  | 56,101,700 |  |  | 55,808,008 |
Shares outstanding |  |  | 33,392,060 |  |  | 33,558,864 |
Treasury stock |  |  |  |  |  |  |
Shares held |  |  | 22,709,640 |  |  | 22,249,144 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
CTS uses the cost method to account for its common stock purchases. During the year ended December 31, 2014, CTS purchased 460,496 shares of common stock for $8,002,000 under a board-authorized share repurchase plan. For the year ended December 31, 2013, CTS purchased 419,190 shares of common stock for $6,208,000. Approximately 8,891,040 shares are available for future issuances. A roll forward of common shares outstanding is as follows:
|  | As of |
|  | December 31, 2014 |  | December 31, 2013 |
Balance at the beginning of the year |  |  | 33,558,864 |  |  | 33,433,128 |
Repurchases |  |  | (460,496 | ) |  | (419,190 | )
Stock option issuances |  |  | 101,350 |  |  | 266,043 |
Restricted share issuances |  |  | 192,342 |  |  | 278,883 |
Restricted share forfeitures |  |  | — |  |  | — |
Shares withheld for tax obligations |  |  | — |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at the end of the period |  |  | 33,392,060 |  |  | 33,558,864 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The following table shows the potentially dilutive securities which have been excluded from the dilutive earnings per share calculation because they are either anti-dilutive, or the exercise price exceeds the average market price.
|  | For the Year Ended December 31, |
|  | 2014 |  | 2013 |  | 2012 |
Potentially dilutive securities |  |  | — |  |  | 634 |  |  | — |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d),(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 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 210.5-02.29-31) -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 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Article 4 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Preferred Stock -URI http://asc.fasb.org/extlink&oid=6521494 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 12: 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 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 + Details
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