CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Accounts Receivable, Allowance for Doubtful Accounts	$ 100	$ 100
Other Assets:
Deferred Charges, Accumulated Amortization	$ 15,821	$ 17,429