Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2012

Derivative Instruments (Tables) [Abstract]

Impact of derivative instruments on the statement of operations and OCI

			Three Months Ended
			March 31,
		Location		2012		2011
Gain (loss) on interest rate swap recognized in
	OCI (effective portion)	n/a	$	739	$	892
Gain (loss) on interest rate swaps reclassified from
	AOCI into income (effective portion)	Interest expense		461		410
Gain (loss) on interest rate swap recognized in income
	(ineffective portion and amount excluded from
	effectiveness testing)	Realized loss		n/a		n/a
Gain (loss) on forward exchange contracts recognized
	in income (ineffective portion and amount excluded
	from effectiveness testing)	Unrealized loss		(555)		0