Debt (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011
Debt (Textuals) [Abstract]
Repurchase facility Maximum loan borrowing capacity	$ 100,000
Repurchase facility maximum commitments	125,000
Repurchase facility outstanding amount	89,600
Average pricing rate of outstanding amount	4.10%
Repurchase agreement with reduced available purchase limit	$ 25,000