Equity (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract]
Balance - beginning of period				$ 7,531					$ 7,531
Net income	214	232	(43)	(50)	187	(37)	(67)	(43)	353	40	1,923
Distributions									(71,820)	(6,649)	(6,000)
Change in other comprehensive income (loss)									(13)	6	(5)
Balance - end of period	7,436				7,531				7,436	7,531
Redeemable Noncontrolling Interest [Member]
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract]
Balance - beginning of period				7,531				7,700	7,531	7,700	7,546
Redemption value adjustment									0	840	(455)
Net income									353	40	1,923
Distributions									(435)	(1,055)	(1,309)
Change in other comprehensive income (loss)									(13)	6	(5)
Balance - end of period	$ 7,436				$ 7,531				$ 7,436	$ 7,531	$ 7,700