CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets:
Accumulated amortization on Deferred expenses	$ 24,402	$ 22,708
Liabilities:
Accretion on Deferred revenue	44,706	37,485
Equity:
Preferred shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred shares, authorized shares (in shares)	100,000,000	100,000,000
Common shares, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common shares, authorized shares (in shares)	400,000,000	400,000,000
Common shares, shares issued (in shares)	178,616,664	154,938,351
Common stock, shares, outstanding (in shares)	178,616,664	154,938,351
Series B | Cumulative Redeemable
Equity:
Preferred shares liquidation preference		68,522
Preferred shares, convertible preferred, shares issued (in shares)		2,740,874
Preferred shares, redeemable preferred, shares outstanding (in shares)		2,740,874
Series C | Cumulative Convertible
Equity:
Preferred shares liquidation preference	96,770	98,510
Preferred shares, convertible preferred, shares issued (in shares)	1,935,400	1,970,200
Preferred shares, redeemable preferred, shares outstanding (in shares)	1,935,400	1,970,200
Series D | Cumulative Redeemable
Equity:
Preferred shares liquidation preference	$ 155,000	$ 155,000
Preferred shares, convertible preferred, shares issued (in shares)	6,200,000	6,200,000
Preferred shares, redeemable preferred, shares outstanding (in shares)	6,200,000	6,200,000