Stock Repurchase Program (Details Textual) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2014	Feb. 13, 2007	Jul. 24, 2002
Program2002 [Member]
Option Indexed to Issuers Equity [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount			$ 300
Common Stock [Member] | Program2002 [Member]
Option Indexed to Issuers Equity [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 72
Common Stock [Member] | Program2007 [Member]
Option Indexed to Issuers Equity [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	100	100