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Capital Transactions (Details 3) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 19, 2014 | Aug. 29, 2013 | 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 |  |  |  |  |  |  |
Share Based Compensation |  |  |  |  |  |  |
Outstanding options to purchase (in shares) |  |  | 1,680,000 |  | 1,680,000 |  | 2,037,000
Exercisable (in shares) |  |  | 902,000 |  | 902,000 |  | 1,069,000
Expected to vest (in shares) |  |  | 637,000 |  | 637,000 |  | 794,000
Aggregate Intrinsic value, outstanding |  |  | $ 1,383 |  | $ 1,383 |  | $ 6,801
Aggregate Intrinsic value, exercisable |  |  | 1,351 |  | 1,351 |  | 4,928
Aggregate Intrinsic value, expected to vest |  |  | 31 |  | $ 31 |  | 1,779
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% |  |
RSUs |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Share-based compensation expense |  |  | 767 | $ 261 | $ 2,106 | $ 727 |
Related tax benefits |  |  | 299 | $ 103 | 828 | $ 287 |
Unrecognized share-based compensation expense |  |  | 3,281 |  | $ 3,281 |  | $ 849
Weighted-average period over which the remaining compensation expense is expected to be recognized |  |  |  |  | 2 years |  |
Minimum statutory withholding requirement paid on behalf of employees (in shares) |  |  |  |  | 8 |  |
Performance-based RSUs |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Vesting period based on achieving operating income and earnings per share targets |  |  |  |  | 1 year |  |
Performance-based RSUs | Maximum |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Potential compensation expense |  |  | $ 2,900 |  | $ 2,900 |  |
2012 Stock Incentive Plan | RSUs |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  |
Units outstanding at the beginning of the period (in shares) |  |  |  |  | 180,000 |  |
Granted (in shares) |  |  |  |  | 675,000 |  |
Issued (in shares) |  |  |  |  | (30,000) |  |
Forfeited or canceled (in shares) |  |  |  |  | (77,000) |  |
Units outstanding at the end of the period (in shares) |  |  | 748,000 |  | 748,000 |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |
Units outstanding at the beginning of the period (in dollars per share) |  |  |  |  | $ 15.09 |  |
Granted (in dollars per share) |  |  |  |  | 12.64 |  |
Issued (in dollars per share) |  |  |  |  | 13.63 |  |
Forfeited or canceled (in dollars per share) |  |  |  |  | 12.90 |  |
Units outstanding at the end of the period (in dollars per share) |  |  | $ 12.50 |  | $ 12.50 |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |
Discount for lack of marketability ( as a percent) |  |  |  |  | 17.50% |  |
2012 Stock Incentive Plan | RSUs | Minimum |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Vesting period |  |  |  |  | 12 months |  |
Vesting period based on achieving operating income and earnings per share targets |  |  |  |  | 3 years |  |
2012 Stock Incentive Plan | RSUs | Maximum |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Vesting period |  |  |  |  | 48 months |  |
Vesting period based on achieving operating income and earnings per share targets |  |  |  |  | 6 years |  |
2012 Stock Incentive Plan | RSUs | Board of Directors |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  |
Number of shares subject to restriction period |  |  | 43,000 |  | 43,000 |  | 32,000
Restriction period |  |  |  |  | 2 years |  |
2012 Stock Incentive Plan | Performance-based RSUs |  |  |  |  |  |  |
Weighted-average assumptions used to calculate fair value of options granted |  |  |  |  |  |  |
Weighted-average grant date fair value (in dollars per share) |  |  |  |  | $ 12.13 |  |
2012 Stock Incentive Plan | Time-based RSUs |  |  |  |  |  |  |
Weighted-average assumptions used to calculate fair value of options granted |  |  |  |  |  |  |
Weighted-average grant date fair value (in dollars per share) |  |  |  |  | $ 13.11 |  |
2012 Stock Incentive Plan | SARs |  |  |  |  |  |  |
Number of Shares |  |  |  |  |  |  |
Units outstanding at the beginning of the period (in shares) |  |  |  |  | 30,000 |  |
Forfeited or canceled (in shares) |  |  |  |  | (10,000) |  |
Units outstanding at the end of the period (in shares) |  |  | 20,000 |  | 20,000 |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |
Units outstanding at the beginning of the period (in dollars per share) |  |  |  |  | $ 5.47 |  |
Forfeited or canceled (in dollars per share) |  |  |  |  | 5.86 |  |
Units outstanding at the end of the period (in dollars per share) |  |  | $ 5.27 |  | $ 5.27 |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Number of shares of common stock used for determining the fair value, or strike price, of grants |  |  | 1 |  | 1 |  |
Share-based compensation expense |  |  | $ 0 |  | $ 6 |  |
Related tax benefits |  |  | 0 |  | 3 |  |
Unrecognized share-based compensation expense |  |  | $ 47 |  | $ 47 |  | $ 150
Weighted-average period over which the remaining compensation expense is expected to be recognized |  |  |  |  | 1 year 9 months 18 days |  |
2012 Stock Incentive Plan | SARs | Minimum |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Vesting period |  |  |  |  | 12 months |  |
2012 Stock Incentive Plan | SARs | Maximum |  |  |  |  |  |  |
Share-based compensation, additional disclosures |  |  |  |  |  |  |
Vesting period |  |  |  |  | 48 months |  |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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