Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	6,000,000	6,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	210,000,000	210,000,000
Common stock, shares issued	63,632,464	63,632,464
Treasury stock, shares	1,583,056	1,650,131
Series A Preferred Stock [Member]
Preferred stock liquidation preference value	$ 25	$ 25