Public Offering of Units and Certain Provisions of the Partnership Agreement (Details Textuals) (USD $)	3 Months Ended	12 Months Ended			0 Months Ended		12 Months Ended		0 Months Ended		12 Months Ended	0 Months Ended		12 Months Ended		1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 14, 2013 Public Placement [Member]	Jan. 14, 2013 Public Placement [Member]	Dec. 31, 2012 Public Placement [Member] May 15, 2012 [Member]	May 15, 2012 Public Placement [Member] May 15, 2012 [Member]	Jan. 14, 2013 Public Placement [Member] January 14, 2013 [Member]	Jun. 14, 2013 Greenshoe Units Sold [Member]	Dec. 31, 2013 Private Placement [Member] September 14, 2012 [Member]	Jan. 14, 2013 Private Placement [Member] January 14, 2013 [Member]	Jun. 14, 2013 June Issuance [Member]	Dec. 31, 2010 Preferred Stock [Member]	Jan. 19, 2010 Preferred Stock [Member]	Feb. 12, 2014 Preferred Unit [Member]	Dec. 31, 2013 Preferred Unit [Member]	Dec. 31, 2012 Preferred Unit [Member]	Dec. 31, 2013 Preferred Unit [Member]	Dec. 31, 2013 March EDA [Member] Equity Distribution [Member]	Dec. 31, 2013 May EDA [Member] Equity Distribution [Member]
Subsidiary, Sale of Stock [Line Items]
Preferred Stock Paid in kind																452,186		366,260	1,570,806
Preferred Stock Dividend Rate Per Dollar Amount Paid In Kind																	$ 0.36
LP units issuance date							May 15, 2012		Jan. 14, 2013		Sep. 14, 2012		Jun. 14, 2013
Partners' Capital Account, Units, Sale of Units																				1,181,628	3,348,213
Limited Partners Unit Price Per Unit					$ 20.33		$ 16.28		$ 15.15		$ 13.25	$ 14.55
General Partners' Contributed Capital								$ 3,400,000							$ 2,600,000
EDA commencement date		Mar. 01, 2013
Partners' Capital Account, Units, Sold in Private Placement											5,660,378	2,700,000		14,705,882
Partners' Capital Account, Units, Sold in Public Offering					8,280,000	8,625,000	10,120,000			1,080,000
Proceeds from Issuance of Common Stock					162,000,000		158,000,000		125,500,000
Aggregate Amount Of Equity Securities Allowed Under Equity Distribution Agreement																				75,000,000.0	75,000,000.0
Replacement EDA commencement date		May 01, 2013
Proceeds from Issuance of Private Placement											74,800,000	39,300,000
Proceeds from Issuance of Common Limited Partners Units		419,498,000	232,791,000	0																20,900,000	72,300,000
Sales Agent Commissions																				300,000	900,000
EDA exhaustion date	Jan. 03, 2014
Minority Interest Decrease From Stock Issuance		35,100,000	15,900,000
Deferred Tax Liabilities Investments Decrease		$ 7,200,000	$ 11,100,000