Derivatives (Derivatives Other Than Cash Flow Hedges Table) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Derivative [Line Items]
Derivative Assets (Liabilities), at Fair Value, Net	$ 2,727	$ 1,924
Non Designated as Hedging Instrument [Member]
Derivative [Line Items]
Less than one year	1,548
One to two years	0
More than two years	0
Derivative Assets (Liabilities), at Fair Value, Net	$ 1,548