Credit Facilities (Tables)

3 Months Ended

Mar. 31, 2014

Line of Credit Facility [Line Items]

Summary Of Costs Incurred Connection With Credit Facilities

	Three Months Ended
	March 31,
(Dollars in thousands)	2014		2013
Credit facility fees incurred	$	174	$	1,129

Wells Fargo Bank Group Credit Facility [Member]

Line of Credit Facility [Line Items]

Summary Of Outstanding Letters Of Credit And/Or Borrowings

(Dollars in thousands)		At March 31, 2014					At December 31, 2013
Bank		Commitment		In Use		Date of Expiry	Commitment		In Use		Date of Expiry
Wells Fargo Bank Group Credit Facility	Tranche One	$	200,000	$	-		$	200,000	$	-
	Tranche Two		600,000		501,853	12/31/2014		600,000		502,059	12/31/2014
Total Wells Fargo Bank Group Credit Facility		$	800,000	$	501,853		$	800,000	$	502,059

Citibank Holdings Credit Facility [Member]

Line of Credit Facility [Line Items]

Summary Of Outstanding Letters Of Credit And/Or Borrowings

(Dollars in thousands)	At March 31, 2014						At December 31, 2013
Bank	Commitment		In Use		Date of Loan	Maturity/Expiry Date	Commitment		In Use		Date of Loan	Maturity/Expiry Date
Citibank Holdings Credit Facility	$	150,000	$	-			$	150,000	$	-
Total revolving credit borrowings				-						-
Total letters of credit				851		12/31/2014				851		12/31/2014
Total Citibank Holdings Credit Facility	$	150,000	$	851			$	150,000	$	851

Citibank Bilateral Agreement [Member]

Line of Credit Facility [Line Items]

Summary Of Outstanding Letters Of Credit And/Or Borrowings

(Dollars in thousands)	At March 31, 2014					At December 31, 2013
Bank	Commitment		In Use		Date of Expiry	Commitment		In Use		Date of Expiry
Citibank Bilateral Letter of Credit Agreement	$	300,000	$	3,672	11/24/2014	$	300,000	$	119	8/30/2014
				79,214	12/31/2014				3,672	11/24/2014
				80	8/30/2015				79,336	12/31/2014
				4,105	12/31/2015				1,045	12/31/2015
				107,343	3/30/2018				22,800	12/31/2017
				39,650	6/30/2018				129,147	3/30/2018
Total Citibank Bilateral Agreement	$	300,000	$	234,064		$	300,000	$	236,119