Share-based Payment Arrangements (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands |
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6 Months Ended |
12 Months Ended |
24 Months Ended |
May. 29, 2015 |
Apr. 02, 2015 |
Sep. 08, 2014 |
Apr. 10, 2013 |
Jul. 27, 2012 |
Jun. 30, 2013 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
Dec. 31, 2012 |
Dec. 31, 2013 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Employee Service Share-based Compensation Nonvested Awards, Total Compensation Cost Not Yet Recognized Next Twelve Months |
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$ 39
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| Stock options, Granted |
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0
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0
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0
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| Options contractual term |
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2 years 6 months
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| Other than options, granted |
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8,616
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| Long Term Incentive Plan 2005 [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation arrangement by share-based payment award, incentive stock options to purchase number of shares |
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564,956
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| Share-based compensation arrangement by share-based payment award, non-qualified stock options to purchase number of shares |
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304,157
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| Share-based compensation arrangement by share-based payment award, restricted stock options to purchase number of shares |
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289,830
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| Long Term Incentive Plan 2005 [Member] | Option Issued Prior To 2009 [Member] | First Anniversary [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Percentage |
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10.00%
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| Long Term Incentive Plan 2005 [Member] | Option Issued Prior To 2009 [Member] | Second Anniversary [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Percentage |
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20.00%
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| Long Term Incentive Plan 2005 [Member] | Option Issued Prior To 2009 [Member] | Third Anniversary [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Percentage |
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30.00%
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| Long Term Incentive Plan 2005 [Member] | Option Issued Prior To 2009 [Member] | Fourth Anniversary [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Percentage |
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40.00%
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| Long Term Incentive Plan 2015 [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation arrangement by share-based payment award, number of shares authorized |
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2,000,000
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| Share-based compensation arrangement by share-based payment award, restricted stock options to purchase number of shares |
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155,027
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| Stock options, Granted |
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0
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| Prior to 2009 Incentive Stock Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation arrangement by share-based payment award, award vesting rights |
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terminate five to ten years from the date of grant
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| Prior to 2009 Incentive Stock Options [Member] | Minimum [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock Based Compensation Incentive Stock Options Grant Under Incentive Plan Termination Period |
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5 years
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| Prior to 2009 Incentive Stock Options [Member] | Maximum [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock Based Compensation Incentive Stock Options Grant Under Incentive Plan Termination Period |
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10 years
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| 2009 Incentive Stock Options [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Stock Based Compensation Incentive Stock Options Grant Under Incentive Plan Termination Period |
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10 years
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| Share-based compensation arrangement by share-based payment award, award vesting rights |
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vest in equal annual increments on each of the first seven anniversary dates
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| Incentive Stock Options 2010 [Member] | Long Term Incentive Plan 2005 [Member] | 25,000 Grant [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation arrangement by share based payment award options vested and expected to vest number |
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25,000
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| Share-based compensation arrangement by share-based payment award, award vesting period |
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3 years
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| Stock Based Compensation Incentive Stock Options Grant Under Incentive Plan Termination Period |
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10 years
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| Non Qualified Stock Options [Member] | Long Term Incentive Plan 2005 [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation arrangement by share-based payment award, award vesting period |
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6 months
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| Non qualified stock options termination period |
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10 years
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| Non Qualified Stock Options [Member] | Long Term Incentive Plan 2005 [Member] | 200,000 Grant [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Share-based compensation arrangement by share-based payment award, non-qualified stock options to purchase number of shares |
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200,000
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| Share-based compensation arrangement by share-based payment award, award vesting period |
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7 years
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| Non qualified stock options termination period |
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10 years
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| Restricted Stock Units (RSUs) [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost |
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$ 800
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| Employee Service Share-based Compensation Nonvested Awards, Total Compensation Cost Not Yet Recognized Next Twelve Months |
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400
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| Employee Service Share-based Compensation Nonvested Awards, Total Compensation Cost Expected to Recognize During Remainder of Year Two |
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300
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| Employee Service Share-based Compensation Nonvested Awards, Total Compensation Cost Expected to Recognize During Remainder of Year Three |
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100
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| Allocated share-based compensation expense |
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226
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$ 49
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$ 145
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| Income tax benefit of share-based payments recognized in income |
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$ 79
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$ 17
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$ 51
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| Restricted Stock Units (RSUs) [Member] | Long Term Incentive Plan 2005 [Member] |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Other than options, granted |
103,351
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175,983
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122,823
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129,463
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103,351
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| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |
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8,616
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8,616
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| Other than options granted, weighted average grant date fair value |
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$ 11.10
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$ 9.66
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$ 9.20
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| Other than options, forfeited |
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9,280
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83,380
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