Consolidated Balance Sheets (Parentheticals) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Par or Stated Value Per Share	$ 0.00	$ 0.00
Preferred Stock, Shares Authorized	100,000	100,000
Series A Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Shares Issued	8	8
Preferred Stock, Shares Outstanding	8	8
Series C Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Shares Issued	108	108
Preferred Stock, Shares Outstanding	108	108
Series D Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Shares Issued	3,280	3,280
Preferred Stock, Shares Outstanding	3,280	3,280
Series E Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Par or Stated Value Per Share	$ 0.00	$ 0.00
Preferred Stock, Shares Authorized	200	200
Preferred Stock, Shares Issued	49	49
Preferred Stock, Shares Outstanding	49	49
Series F Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred Stock, Shares Authorized	7,000	7,000
Preferred Stock, Shares Issued	7,000	7,000
Preferred Stock, Shares Outstanding	7,000	7,000
Series G Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Par or Stated Value Per Share	$ 0	$ 0
Preferred Stock, Shares Authorized	9,439	9,439
Preferred Stock, Shares Issued	9,439	9,439
Preferred Stock, Shares Outstanding	9,439	9,439
Common Stock [Member]
Stockholders' equity:
Common stock, par value	$ 10	$ 10
Common stock, shares authorized	400,000	400,000
Common stock, shares issued	134,530	134,530
Common stock, shares outstanding	131,326	131,290
Treasury Stock [Member]
Stockholders' equity:
Treasury Stock, Shares	3,204	3,240