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Debt Warehouse Facilities (Tables)
3 Months Ended
Mar. 31, 2018
Warehouse Facilities [Abstract]  
Schedule of Warehouse Facilities
 
March 31, 2018
 
December 31, 2017
($ in millions)
Outstanding Balance
Maximum Capacity
 
Outstanding Balance
Maximum Capacity
Warehouse Facilities:
 
 
 
 
 
LIBOR plus 1.4%, expires September 24, 2018
$
231.2

375.0

 
156.4

375.0

LIBOR plus 1.35%, expires September 29, 2018
80.5

375.0

 
74.8

375.0

LIBOR plus 1.5%, expires August 31, 2018

100.0

 

100.0

Fannie Mae ASAP program, LIBOR plus 1.30% to 1.45%
95.5

n/a

 
79.2

n/a

Gross warehouse facilities
$
407.2

850.0

 
310.4

850.0

Debt issuance costs
(0.8
)
n/a

 
(1.2
)
n/a

Total warehouse facilities
$
406.4

850.0

 
309.2

850.0