CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Current Assets:
Accounts Receivable, Allowance for Doubtful Accounts	$ 88	$ 100
Other Assets:
Deferred Charges, Accumulated Amortization	$ 15,060	$ 15,821
Stockholders' Equity:
9.50% Series A Cumulative Perpetual Preferred Stock, par value (in dollars per share)	$ 1.00	$ 1.00
9.50% Series A Cumulative Perpetual Preferred Stock, coupon rate (in hundredths)	9.50%	9.50%
9.50% Series A Cumulative Perpetual Preferred Stock, shares authorized (in shares)	650,000	650,000
9.50% Series A Cumulative Perpetual Preferred Stock, shares issued (in shares)	250,000	250,000
9.50% Series A Cumulative Perpetual Preferred Stock, shares outstanding (in shares)	250,000	250,000
Common Stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common Stock, shares authorized (in shares)	20,000,000	20,000,000
Common Stock, shares issued (in shares)	7,248,350	7,203,935
Common Stock, shares outstanding (in shares)	7,248,350	7,203,935
Treasury Stock, (in shares)	1,388,066	1,388,066