Consolidated Balance Sheets Parenthetical - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Investments at Fair Value	$ 157,934	$ 163,675
Treasury Stock [Member]
Treasury Stock, Shares	154,084,335.000	128,468,165
Common Stock [Member]
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	2,010,000,000	2,010,000,000
Common Stock, Shares, Issued	0	0
Common Stock, Shares, Outstanding	0	0
Common Class A [Member]
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	2,000,000,000	2,000,000,000
Common Stock, Shares, Issued	726,864,414	717,387,446
Common Stock, Shares, Outstanding	572,780,079	588,919,281
Common Class B [Member]
Common Stock, Par Value	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	10,000,000	10,000,000
Common Stock, Shares, Issued	2,399,976	2,399,976
Common Stock, Shares, Outstanding	2,399,976	2,399,976