XML 110 R99.htm IDEA: XBRL DOCUMENT v3.8.0.1
Borrowings (Repurchase Agreements) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Borrowing Balance $ 419,254 $ 795,354
Securities Sold under Agreements to Repurchase [Member]    
Debt Instrument [Line Items]    
Borrowing Balance $ 282,500 $ 652,229
Weighted Average Coupon 1.56%  
Securities Sold under Agreements to Repurchase [Member] | Due Date: 04 29 2018 [Member]    
Debt Instrument [Line Items]    
Borrowing Balance $ 172,500  
Weighted Average Coupon 1.42%  
Settlement Date Dec. 10, 2012  
Investment Repurchase Agreement, Repurchase Date Apr. 29, 2018  
Securities Sold under Agreements to Repurchase [Member] | Due date: 09 03 2019 [Member]    
Debt Instrument [Line Items]    
Borrowing Balance $ 50,000  
Weighted Average Coupon 1.72%  
Settlement Date Mar. 02, 2017  
Investment Repurchase Agreement, Repurchase Date Sep. 03, 2019  
Securities Sold under Agreements to Repurchase [Member] | Due Date: 3/2/2020 [Member]    
Debt Instrument [Line Items]    
Borrowing Balance $ 60,000  
Weighted Average Coupon 1.85%  
Settlement Date Mar. 02, 2017  
Investment Repurchase Agreement, Repurchase Date Mar. 02, 2020