Derivative Financial Instruments (Narrative) (Details) (USD $)		0 Months Ended					0 Months Ended
	Mar. 03, 2008 Loans [Member] Interest rate swap agreements [Member]	Oct. 04, 2011 Bank Of America [Member] Interest rate swap agreements [Member]	Mar. 03, 2008 Bank Of America [Member] Interest rate swap agreements [Member]	Oct. 04, 2011 Union Bank [Member] Interest rate swap agreements [Member]	Aug. 09, 2013 2013 Swap [Member]	Sep. 30, 2014 2013 Swap [Member]	Feb. 14, 2014 2014 Swap [Member]	Sep. 30, 2014 2014 Swap [Member]	Sep. 30, 2014 LIBOR [Member] 2013 Swap [Member]	Sep. 30, 2014 LIBOR [Member] 2014 Swap [Member]
Derivative Financial Instruments [Line Items]
Term of swap agreement					3 years		3 years
Notional amount						$ 148,000,000		$ 113,000,000
Basis spread on variable rate									1.20%	1.40%
Swap agreement collateral						40,000,000		30,000,000
Secured notes	18,000,000
Fixed rate	4.25%
Loan maximum borrowing capacity		$ 18,000,000		$ 20,000,000
Floating rate, LIBOR plus basis points (as a percentage)			0.50%	0.40%
Loan mature date		Mar. 01, 2013		Jan. 02, 2015