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Stock Repurchases (Narrative) (Details) (USD $) | Dec. 31, 2014
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Equity, Class of Treasury Stock [Line Items] |
Amount authorized for share repurchases | $ 75,998,000 us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

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- Details
Name: | us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant