Stock-Based Compensation (Vesting Schedule of Outstanding Unvested Restricted Stock Unit Awards) (Details) (Restricted Stock Units [Member])	Dec. 31, 2014
Restricted Stock Units [Member]
Vesting schedule of outstanding unvested restricted stock awards
2015 (in shares)	390,500
2016 (in shares)	202,500
2017 (in shares)	857,597
2018 (in shares)	196,000
2019 (in shares)	159,000
Total (in shares)	1,805,597

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The number of non-vested equity-based payment instruments awarded, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date, including awards that have been approved for grant but have not yet been granted for accounting purposes (i.e. a grant date fair value cannot be determined currently because the related performance targets for future years have not yet been established by the Compensation Committee).

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- Definition

Unvested awards expected to vest in the fifth fiscal year following the most recent fiscal year end from the balance sheet date.

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- Definition

Unvested awards expected to vest in the fourth fiscal year following the most recent fiscal year end from the balance sheet date.

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- Definition

Unvested awards expected to vest in the first fiscal year following the most recent fiscal year end from the balance sheet date.

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- Definition

Unvested awards expected to vest in the third fiscal year following the most recent fiscal year end from the balance sheet date.

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- Definition

Unvested awards expected to vest in the second fiscal year following the most recent fiscal year end from the balance sheet date.

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