Deferred Compensation Plan (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Compensation Liability [Abstract]
Maximum deferral % of base compensation allowed to participants of deferred compensation plan	50.00%
Maximum deferral % of bonus compensation allowed to participants of deferred compensation plan	100.00%
Our matching cash contributions represents this % of contributions made by participants of deferred compensation plan	50.00%
Maximum employer contribution match % (of total eligible compensation) to each participant of deferred compensation plan	2.00%
Our discretionary contributions	$ 300,000	$ 400,000	$ 600,000
Deferred compensation plan liability	$ 9,653,000	$ 8,339,000

Maximum deferral percentage of base compensation under deferred compensation plan.

No definition available.

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- Definition

Maximum deferral percentage of bonus compensation under deferred compensation plan.

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No definition available.

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- Definition

Maximum employer contribution match percentage of total eligible compensation to each participant of deferred compensation plan

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No definition available.

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- Definition

Our matching cash contributions represents this % of contributions made by participants of deferred compensation plan

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No definition available.

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- Definition

The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement.

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No definition available.

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- Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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No definition available.

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