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Interest Expense (Tables)
 9 Months Ended
Sep. 30, 2013
Banking and Thrift [Abstract]  
Interest Expense Net Disclosure
The following table summarizes the components of interest expense for the periods presented:
 
Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2013
 
2012
 
2013
 
2012
Interest on borrowings and related fees
$
22,754

 
$
14,156

 
$
57,239

 
$
42,462

Accretion of original issue discount
—

 
351

 
431

 
1,025

Amortization of debt issuance costs
961

 
706

 
2,415

 
2,082

Capitalized interest
(3,497
)
 
(234
)
 
(3,580
)
 
(732
)
 
$
20,218

 
$
14,979

 
$
56,505

 
$
44,837