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Capital Transactions (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Sep. 19, 2014 | Aug. 29, 2013 | Jan. 31, 2015 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Special one-time cash dividend paid per common share (in dollars per share) | $ 1.50 | $ 1.50 |  |  |  |  |  |
Stock options |  |  |  |  |  |  |  |
Number of shares |  |  |  |  |  |  |  |
Options outstanding at the beginning of the period (in shares) |  |  | 2,037 |  |  | 2,037 |  |
Granted (in shares) |  |  |  |  |  | 310 |  |
Forfeited or cancelled (in shares) |  |  |  |  |  | (268) |  |
Exercised (in shares) |  |  |  |  |  | (399) |  |
Options outstanding at the end of the period (in shares) |  |  |  | 1,680 |  | 1,680 |  |
Weighted Average Exercise Price Per Share |  |  |  |  |  |  |  |
Options outstanding at the beginning of the period (in dollars per share) |  |  | $ 11.69 |  |  | $ 11.69 |  |
Granted (in dollars per share) |  |  |  |  |  | 14.27 |  |
Forfeited or canceled (in dollars per share) |  |  |  |  |  | 14.30 |  |
Exercised (in dollars per share) |  |  |  |  |  | 9.79 |  |
Options outstanding at the end of the period (in dollars per share) |  |  |  | $ 12.20 |  | $ 12.20 |  |
Weighted-average assumptions used to calculate fair value of options granted |  |  |  |  |  |  |  |
Risk-free interest rate (as a percent) |  |  |  |  |  | 1.50% |  |
Dividend yield (as a percent) |  |  |  |  |  | 2.80% |  |
Stock options | Minimum |  |  |  |  |  |  |  |
Weighted-average assumptions used to calculate fair value of options granted |  |  |  |  |  |  |  |
Expected life |  |  |  |  |  | 5 years |  |
Expected volatility (as a percent) |  |  |  |  |  | 46.30% |  |
Stock options | Maximum |  |  |  |  |  |  |  |
Weighted-average assumptions used to calculate fair value of options granted |  |  |  |  |  |  |  |
Expected life |  |  |  |  |  | 6 years |  |
Expected volatility (as a percent) |  |  |  |  |  | 52.30% |  |
Time-based stock options |  |  |  |  |  |  |  |
Share-based compensation, related information |  |  |  |  |  |  |  |
Share-based compensation expense |  |  |  | $ 424 | $ 691 | $ 1,164 | $ 2,307 |
Related tax benefit |  |  |  | 165 | $ 273 | 457 | $ 911 |
Unrecognized share-based compensation expense |  |  |  | 1,451 |  | $ 1,451 |  | $ 2,018
Weighted-average period over which the remaining compensation cost is expected to be recognized |  |  |  |  |  | 1 year 7 months 6 days |  |
Time-based stock options | Maximum |  |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 48 months |  |
Performance based stock options operating income margins |  |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Operating income margin, one (as a percent) |  |  |  |  |  | 6.00% |  |
Operating income margin, two (as a percent) |  |  |  |  |  | 8.00% |  |
Operating income margin, three (as a percent) |  |  |  |  |  | 10.00% |  |
Period of time during which operating income margins must be achieved in order to vest in performance based stock options |  |  |  |  |  | 12 months |  |
Consecutive period of time used to assess operating income margins which determine vesting |  |  |  |  |  | 15 months |  |
Performance based stock options sales and operating income margins |  |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 2 years |  |
Performance based stock options sales and operating income margins | Minimum |  |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Operating income margin, two (as a percent) |  |  |  |  |  | 8.00% |  |
Performance based stock options sales |  |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Vesting period based on achieving annual net sales targets |  |  |  |  |  | 1 year |  |
Performance based stock options sales | Maximum |  |  |  |  |  |  |  |
Share-based compensation, related information |  |  |  |  |  |  |  |
Potential compensation expense |  |  |  | $ 757 |  | $ 757 |  |
2012 Stock Incentive Plan |  |  |  |  |  |  |  |
Share Based Compensation |  |  |  |  |  |  |  |
Number of shares authorized under the plan |  |  |  |  |  |  |  | 1,500
Additional number of shares authorized under the plan |  |  | 1,500 |  |  |  |  |
2012 Stock Incentive Plan | Time-based stock options |  |  |  |  |  |  |  |
Number of shares |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 310 |  |
Weighted Average Exercise Price Per Share |  |  |  |  |  |  |  |
Granted (in dollars per share) |  |  |  |  |  | $ 14.27 |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |  |
Expiration period |  |  |  |  |  | 10 years |  |
Weighted-average assumptions used to calculate fair value of options granted |  |  |  |  |  |  |  |
Weighted-average grant date fair value (in dollars per share) |  |  |  |  |  | $ 4.92 |  |
2009 Incentive Plan | Maximum |  |  |  |  |  |  |  |
Share Based Compensation |  |  |  |  |  |  |  |
Number of shares authorized under the plan |  |  |  | 400 |  | 400 |  |

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