Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Long-term investments and other assets, fair value	$ 2,826	$ 2,340
Series B redeemable convertible preferred stock, par value	$ 0.01	$ 0.01
Series B redeemable convertible preferred stock, shares authorized	45,000	45,000
Series B redeemable convertible preferred stock, shares issued	35,217	35,217
Series B redeemable convertible preferred stock, shares outstanding	35,217	35,217
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	6,343,295	6,271,821
Common stock, shares outstanding	6,188,295	6,251,821
Treasury stock, shares	155,000	20,000