Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Preferred stock, shares authorized	600,000	600,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common Class A
Common stock, par value	0.01	0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	73,117.000	67,991.000
Common stock, shares outstanding	73,117	67,991
Common Class B
Common stock, par value	0.01	0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	357,882.000	357,882.000
Common stock, shares outstanding	357,882	357,882
Common Class C
Common stock, par value	0.01	0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	209,882.000	209,882.000
Common stock, shares outstanding	209,882	209,882
Common Class D
Common stock, par value	0.01	0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	279,999.000	279,999.000
Common stock, shares outstanding	279,999	279,999
Common Class E
Common stock, par value	0.01	0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	504,276.000	504,276.000
Common stock, shares outstanding	504,276	504,276
Common Class F
Common stock, par value	0.01	0.01
Common stock, shares authorized	1	1
Common stock, shares issued	1.000	1.000
Common stock, shares outstanding	1	1
Common Class G
Common stock, par value	0.01	0.01
Common stock, shares authorized	3	3
Common stock, shares issued	3.000	3.000
Common stock, shares outstanding	3	3