Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Long-term investments and other assets, fair value	$ 3,366	$ 2,970
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	8,145,833	8,071,674
Common stock, shares outstanding	7,820,833	7,826,674
Treasury stock, shares	325,000	245,000