Borrowings (Narrative) (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended
	Sep. 30, 2013	Dec. 31, 2012 Secured Debt acre sqft	Dec. 31, 2012 London Interbank Offered Rate (LIBOR) Secured Debt
Debt Instrument [Line Items]
Debt Instrument, Description of Variable Rate Basis			LIBOR
Short-term lines of credit borrowing capacity	$ 22.5
Loans Payable to Bank		4.9
Purchase Of Property Plant And Equipment		$ 6.5
Number Of Acres Of Land Purchased		2.85
Area of Real Estate Property		55,612
Debt Instrument, Basis Spread on Variable Rate			1.00%