Employee Stock Purchase Plan Stock Options and Warrants - Long Term Incentive Plans (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
2006 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	1,100
Employee Stock Purchase Plan Qualified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	229
Share Based Compensation Arrangement Employee Stock Purchase Plan Percentage of Market Price Purchase Date	95.00%
Employee Stock Purchase Plan Non Qualified
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	60
Stock Options | 2006 Incentive Plan | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Stock Option Contractual Life	7 years
Stock Options | 2006 Incentive Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Stock Option Contractual Life	10 years
Performance Shares | 2006 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year