Consolidated Balance Sheets Parenthetical (Parentheticals) - $ / shares shares in Thousands	Dec. 31, 2015	Dec. 31, 2014
Series A Preferred Stock [Member]
Preferred stock, par or stated value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	100	100
Preferred stock, shares outstanding	0	0
Preferred Stock [Member]
Preferred stock, par or stated value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares outstanding	0	0
Common Stock [Member]
Common stock, par or stated value per share	$ 0.01	$ 0.01
Common stock, shares authorized	150,000	150,000
Common stock, shares issued	82,300	81,900
Treasury stock, shares	6,200	6,100
Series Common Stock [Member]
Common stock, par or stated value per share	$ 0.01	$ 0.01
Common stock, shares authorized	40,000	40,000
Common stock, shares, outstanding	0	0