Share-Based Payment Arrangements (Narrative) (Details) (USD $) | 3 Months Ended | | 3 Months Ended | | 3 Months Ended | | 3 Months Ended | | 3 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended |
In Thousands, except Share data, unless otherwise specified | Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | 26-May-05 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2009 | 30-May-13 | Apr. 10, 2013 | Jul. 27, 2012 | Mar. 31, 2014 |
| Minimum [Member] | Maximum [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Incentive Stock Options 2010 [Member] | Incentive Stock Options 2011 [Member] | Incentive Stock Options 2011 [Member] | Incentive Stock Options 2011 [Member] | Non Qualified Stock Options [Member] | Restricted Stock Units (RSUs) [Member] | Restricted Stock Units (RSUs) [Member] | Restricted Stock Units (RSUs) [Member] | Restricted Stock Units (RSUs) [Member] |
| | | | | Minimum [Member] | Maximum [Member] | First Anniversary [Member] | Second Anniversary [Member] | Third Anniversary [Member] | Fourth Anniversary [Member] | Long Term Incentive Plan 2005 [Member] | 5,000 Grant [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] | Long Term Incentive Plan 2005 [Member] |
| | | | | Option Issued Prior to 2009 [Member] | Option Issued Prior to 2009 [Member] | Option Issued Prior to 2009 [Member] | Option Issued Prior to 2009 [Member] | Option Issued Prior to 2009 [Member] | Option Issued Prior to 2009 [Member] | | | 5,000 Grant [Member] | 10,000 Grant [Member] | | | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Stock compensation plan, number of shares authorized | ' | ' | ' | ' | ' | 2,000,000 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of incentive stock options to purchase shares of common stock outstanding | ' | ' | ' | ' | 1,083,332 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of non-qualified stock options to purchase shares of common stock outstanding | ' | ' | ' | ' | 304,157 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 200,000 | ' | ' | ' | ' |
Number of restricted stock units to receive shares of common stock | ' | ' | ' | ' | 355,277 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Share-based compensation by share based payment award, remaining available shares for issuance | ' | ' | ' | ' | 241,401 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Share-based payment award vesting rights | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | '3 years | ' | ' | ' | '7 years | ' | ' | ' | ' |
Percentage of restricted stock units granted as result of meeting growth rates | ' | ' | 50.00% | 150.00% | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Number of options vested or expected to vest | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 25,000 | 5,000 | ' | ' | ' | ' | ' | ' | ' |
Share-based payment, award vesting period | ' | ' | ' | ' | '6 months | ' | ' | ' | ' | ' | ' | ' | ' | ' | '7 years | ' | ' | ' | ' | ' | ' |
Incentive stock options termination period | ' | ' | ' | ' | ' | ' | '5 years | '10 years | ' | ' | ' | ' | '10 years | ' | '10 years | '10 years | ' | ' | ' | ' | ' |
Non Qualified Stock Options termination period | ' | ' | ' | ' | '10 years | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | '10 years | ' | ' | ' | ' |
Percentage of options vested or expected to vest | ' | ' | ' | ' | 100.00% | ' | ' | ' | 10.00% | 20.00% | 30.00% | 40.00% | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Total unrecognized compensation cost related to non-vested share-based compensation arrangements | $412 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | $444 |
Compensation costs expected to be recognized during remainder of 2014 | 153 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 186 |
Compensation costs expected to be recognized during year two | 203 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 209 |
Compensation costs expected to be recognized during year three | 53 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 49 |
Compensation costs expected to be recognized during year four | 3 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Stock Options, Granted | ' | 0 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Other than options, granted | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 122,823 | 129,463 | ' |
Other than options, grant date fair value | $9.20 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |
Other than options, forfeited | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | 9,280 | ' | ' | ' |
Allocated share-based compensation expense | $62 | $0 | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' | ' |