Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reconciling basic to diluted weighted average stock outstanding to diluted weighted average stock outstanding
Basic weighted average stock outstanding	38,264	37,920	38,149	37,827
Dilutive weighted average stock outstanding	39,471	39,380	39,446	39,268
Warrant [Member]
Reconciling basic to diluted weighted average stock outstanding to diluted weighted average stock outstanding
Warrants	1,089	1,239	1,150	1,226
Employee Stock Option [Member]
Reconciling basic to diluted weighted average stock outstanding to diluted weighted average stock outstanding
Employee stock options	70	158	96	187
Restricted Stock Units (RSUs) [Member]
Reconciling basic to diluted weighted average stock outstanding to diluted weighted average stock outstanding
Employee stock options	48	63	51	28

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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