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Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Cash and cash equivalents and restricted cash and cash equivalents
Cash	$ 9,095	$ 4,560
Money Market Funds	473,781	342,832
Cash and cash equivalents	482,876	347,392	325,968	229,685
Cash and cash Equivalents, % by Institution	100.00%	100.00%
Restricted cash and cash equivalents	2,653	33,009
Restricted cash and cash equivalents, % by Institution	100.00%	100.00%
Funds held in Trust [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	53
State Deposits [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	2,600	33,009
U .S. Bank IT&C [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Money Market Funds		40,463
Cash and cash equivalents		40,463
Cash and cash Equivalents, % by Institution		11.60%
Restricted cash and cash equivalents	800	800
Restricted cash and cash equivalents, % by Institution	30.20%	2.40%
U .S. Bank IT&C [Member] | Funds held in Trust [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents
U .S. Bank IT&C [Member] | State Deposits [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	800	800
Sun Trust Bank [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Cash	4,996	773
Money Market Funds	14,292	1,055
Cash and cash equivalents	19,288	1,828
Cash and cash Equivalents, % by Institution	4.00%	0.50%
Sun Trust Bank Escrow Services [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Money Market Funds	449,928	300,843
Cash and cash equivalents	449,928	300,843
Cash and cash Equivalents, % by Institution	93.10%	86.60%
Wells Fargo Bank N.A. [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Cash	3,666	1,991
Money Market Funds		3
Cash and cash equivalents	3,666	1,994
Cash and cash Equivalents, % by Institution	0.80%	0.60%
Bank of New York Mellon Trust Co. [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	53
Restricted cash and cash equivalents, % by Institution	2.00%
Bank of New York Mellon Trust Co. [Member] | Funds held in Trust [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	53
Florida Department of Financial Services [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	1,800	32,209
Restricted cash and cash equivalents, % by Institution	67.80%	97.60%
Florida Department of Financial Services [Member] | Funds held in Trust [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents
Florida Department of Financial Services [Member] | State Deposits [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Restricted cash and cash equivalents	1,800	32,209
Deutsche Bank Securities, Inc. [Member]
Cash and cash equivalents and restricted cash and cash equivalents
Cash	433	1,796
Money Market Funds	9,561	468
Cash and cash equivalents	$ 9,994	$ 2,264
Cash and cash Equivalents, % by Institution	2.10%	0.70%

X

- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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