Receivables (Narrative) (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Land Note [Member]	Dec. 31, 2013 Land Note [Member] Maturity Date, March 31, 2014 [Member]	Dec. 31, 2013 Land Note [Member] Maturity Date, March 31, 2015 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable	$ 67,333	$ 34,917		$ 67,300	$ 33,700
Interest rate on Land Note, start			1.00%
Interest rate on Land Note, end			1.50%