Quarterly report pursuant to Section 13 or 15(d)

Fair Value, Option, Quantitative Disclosures - changes included in net income (Details)

v3.2.0.727
Fair Value, Option, Quantitative Disclosures - changes included in net income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ (4,409) $ 33,335 $ 13,539 $ 38,011
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 272 1,036 30 1,069
Loans Held-for-sale, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 4,499 10,337 17,836 12,159
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 272 1,036 30 1,069
Loans Held-for-investment, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (27,313) 44,392 (9,027) 54,260
Fair Value, Option, Credit Risk, Gains (Losses) on Assets 0 0 0 0
Borrowings [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 18,405 (21,394) 4,730 (28,408)
Fair Value, Option, Credit Risk, Gains (Losses) on Liabilities 0 0 0 0
Interest Income [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 16,217 4,868 28,017 11,994
Interest Income [Member] | Loans Held-for-sale, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 7,518 2,699 11,789 7,285
Interest Income [Member] | Loans Held-for-investment, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 21,830 7,761 40,067 15,654
Interest Expense [Member] | Borrowings [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (13,131) (5,592) (23,839) (10,945)
Gain (Loss) on Mortgage Loans [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (3,019) 7,638 6,047 4,874
Gain (Loss) on Mortgage Loans [Member] | Loans Held-for-sale, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (3,019) 7,638 6,047 4,874
Gain (Loss) on Mortgage Loans [Member] | Loans Held-for-investment, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 0 0 0 0
Gain (Loss) on Mortgage Loans [Member] | Borrowings [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 0 0 0 0
Other Income [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (17,607) 20,829 (20,525) 21,143
Other Income [Member] | Loans Held-for-sale, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) 0 0 0 0
Other Income [Member] | Loans Held-for-investment, Mortgages [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) (49,143) 36,631 (49,094) 38,606
Other Income [Member] | Borrowings [Member]        
Fair Value, Option, Quantitative Disclosures [Line Items]        
Fair Value, Option, Changes in Fair Value, Gain (Loss) $ 31,536 $ (15,802) $ 28,569 $ (17,463)