Stock-Based Compensation and Equity (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract]
Balance - beginning of period	$ 7,436
Net income	262	(50)
Distributions	(6,045)		(71,820)
Change in other comprehensive income (loss)	(6)	(23)
Balance - end of period	7,303		7,436
Redeemable Noncontrolling Interest
Redeemable Noncontrolling Interest, Equity, Carrying Amount [Abstract]
Balance - beginning of period	7,436	7,531	7,531
Redemption value adjustment	(306)	0
Net income	262	(50)
Distributions	(83)	(54)
Change in other comprehensive income (loss)	(6)	(23)
Balance - end of period	$ 7,303	$ 7,404