Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Managemen Add Info (Details Add Info)

v3.19.1
DERIVATIVE FINANCIAL INSTRUMENTS - Asset and Liability Managemen Add Info (Details Add Info) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Derivative [Line Items]    
Derivative, Notional Amount $ 9,552,000 $ 4,877,000
Derivative, Average Remaining Maturity 2 years 6 months 10 days  
Asset conversion swaps - Receive Fixed - Generic    
Derivative [Line Items]    
Derivative, Notional Amount $ 12,000 $ 12,000
Derivative, Average Remaining Maturity 11 months 20 days 1 year 2 months
Fair Value $ 0 $ (51)
Weighted-Average Rate Receive 2.20% 2.20%
Weighted-Average Rate Pay 2.48% 2.46%
Liability conversion swaps - Receive Fixed - Generic    
Derivative [Line Items]    
Derivative, Notional Amount $ 5,790,000 $ 4,865,000
Derivative, Average Remaining Maturity 2 years 6 months 10 days 2 years 7 months
Fair Value $ 53,000 $ 2,000
Weighted-Average Rate Receive 2.24% 2.24%
Weighted-Average Rate Pay 2.54% 2.54%
Interest Rate Swap [Member]    
Derivative [Line Items]    
Derivative, Notional Amount $ 5,802,000 $ 4,877,000
Fair Value $ 53,000 $ 2,000
Weighted-Average Rate Receive 2.24% 2.24%
Weighted-Average Rate Pay 2.54% 2.54%
Interest Rate Floor [Member]    
Derivative [Line Items]    
Derivative, Notional Amount $ 3,750,000  
Derivative, Average Remaining Maturity 1 year 9 months 27 days  
Fair Value $ 12,000