Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	AFS Investments			Interest Rate Swaps			Total
Fair value at December 31, 2012	$	59,145		$	(7,968	)	$	51,177
Investment accretion included in interest income	830			—			830
Unrealized losses included in interest expense	—			(12		)	(12		)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	—			420			420
Unrealized (losses) gains included in equity and partners’ capital	(1,708		)	176			(1,532		)
Fair value at March 31, 2013	$	58,267		$	(7,384	)	$	50,883
Fair value at December 31, 2013	58,408			(4,604		)	53,804
Investment accretion included in interest income	920			—			920
Unrealized losses included in interest expense	—			(12		)	(12		)
Losses on interest rate swaps reclassified into interest expense from accumulated other comprehensive loss	—			426			426
Unrealized gains (losses) included in equity and partners’ capital	467			(761		)	(294		)
Fair value at March 31, 2014	$	59,795		$	(4,951	)	$	54,844