Financial Derivative Instruments, Part 2 (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain/loss on derivatives	$ (71)	$ (345)	$ (99)	$ (141)
Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain/proceeds recognized in income on derivative			$ 0	$ 0