v2.4.0.6
Short-Term Borrowings (Details Textual) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Line of Credit, Current $ 25
Debt Instrument, Interest Rate at Period End 1.20%
Revolving Credit Facility [Member] | BMO Harris Bank [Member]
 
Line of Credit Facility, Amount, Total 60
Line of Credit Facility, Expiration Date Apr. 30, 2014
Revolving Credit Facility [Member] | PNC Bank [Member] | Subsequent Event [Member]
 
Line of Credit Facility, Amount, Total $ 60
Line of Credit Facility, Description The new line of credit bears interest at LIBOR plus 0.75% and expires on November 5, 2014.