Executive Stock Purchase Plan (Details Textual) (Executive Stock Purchase Plan [Member]) In Thousands, unless otherwise specified	Dec. 31, 2014	Jun. 16, 2014
Executive Stock Purchase Plan [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Number Of Shares Authorized To Be Repurchased	13	250

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant