Derivatives (Tables)

3 Months Ended

Mar. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Derivatives Outstanding Included in Other Assets and Liabilities

The following tables summarize the Company’s derivatives outstanding included in other assets and other liabilities in the accompanying Consolidated Balance Sheets:

March 31, 2018	Derivative Assets				Derivative Liabilities
	Notional		Fair Value		Notional		Fair Value
	(Dollars in thousands)
Derivatives designated as cash flow hedges:
Interest rate contracts - pay fixed, receive floating	$	—	$	—	$	250,000	$	1,483
Total cash flow hedges	—		—		250,000		1,483
Derivatives not designated as hedges:
Interest rate contracts - pay floating, receive fixed	352,736		7,232		904,363		15,009
Interest rate contracts - pay fixed, receive floating	904,363		7,777		352,736		—
Interest rate caps purchased	94,765		343		—		—
Interest rate caps sold	—		—		94,765		343
Risk participation agreements	32,319		—		2,450		4
Total derivatives not designated as hedges	1,384,183		15,352		1,354,314		15,356
Total derivatives	$	1,384,183	$	15,352	$	1,604,314	$	16,839

December 31, 2017	Derivative Assets				Derivative Liabilities
	Notional		Fair Value		Notional		Fair Value
	(Dollars in thousands)
Derivatives not designated as hedges:
Interest rate contracts - pay floating, receive fixed	$	757,887	$	11,678	$	380,233	$	4,180
Interest rate contracts - pay fixed, receive floating	380,233		—		757,887		7,498
Interest rate caps - purchased	94,884		155		—		—
Interest rate caps - sold	—		—		94,884		155
Total derivatives	$	1,233,004	$	11,833	$	1,233,004	$	11,833

Derivative Instruments, Gain (Loss) [Table Text Block]

The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the Consolidated Statements of Income relating to the cash flow derivative instruments for the following periods:

March 31, 2018	Amount of Gain (Loss) Recognized in AOCI		Amount of Gain (Loss) Reclassified from AOCI to Interest Expense	Location of Gain (Loss) Reclassified from AOCI into Income
	(Dollars in thousands)
Derivatives designated as cash flow hedges:
Interest rate contracts - pay fixed, receive floating	(1,113	)	—	Interest on borrowings

Summary of Gross and Net Fair Values of Derivatives Outstanding Included in Other Liabilities

The following table summarizes the gross and net fair values of the Company’s derivatives outstanding with this counterparty included in other liabilities in the accompanying Consolidated Balance Sheets:

March 31, 2018	Gross amounts of recognized liabilities		Gross amounts offset in the consolidated balance sheets			Net amounts in the consolidated balance sheets
	(Dollars in thousands)
Offsetting derivative liabilities:
Counterparty A - Interest rate contracts	$	15,009	$	(7,232	)	$	7,777

December 31, 2017	Gross amounts of recognized liabilities		Gross amounts offset in the consolidated balance sheets			Net amounts in the consolidated balance sheets
	(Dollars in thousands)
Offsetting derivative liabilities:
Counterparty A - Interest rate contracts	$	11,833	$	(4,491	)	$	7,342