CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]
Preferred stock, liquidation preference per share	$ 50	$ 50
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	1,565	2,000
Preferred stock, shares outstanding	1,565	2,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	499,816	498,799
Common stock, shares outstanding	499,816	498,799