Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Estimated Fair Values and Carrying Amounts of Financial Instruments

The carrying amount and estimated fair values, as well as the level within the fair value hierarchy, of the Company’s financial instruments are included in the tables below. See Note 1, Summary of Significant Accounting Policies, for a description of how fair value measurements are determined.

	December 31, 2015
(Dollars in thousands)	Carrying  Amount		Fair Value		Level 1		Level 2		Level 3
Financial Assets
Cash and cash equivalents	$	510,267	$	510,267	$	510,267	$	—	$	—
Investment securities	2,899,214		2,901,247		—		2,901,247		—
Loans and loans held for sale, net of unearned income and allowance for loan losses	14,355,297		14,674,749		—		166,247		14,508,502
FDIC loss share receivables	39,878		9,163		—		—		9,163
Derivative instruments	30,486		30,486		—		30,486		—
Financial Liabilities
Deposits	$	16,178,748	$	15,696,245	$	—	$	—	$	15,696,245
Short-term borrowings	326,617		326,617		326,617		—		—
Long-term debt	340,447		309,847		—		—		309,847
Derivative instruments	24,939		24,939		—		24,939		—
	December 31, 2014
(Dollars in thousands)	Carrying Amount		Fair Value		Level 1		Level 2		Level 3
Financial Assets
Cash and cash equivalents	$	548,095	$	548,095	$	548,095	$	—	$	—
Investment securities	2,275,813		2,278,334		—		2,278,334		—
Loans and loans held for sale, net of unearned income and allowance for loan losses	11,450,985		11,475,315		—		139,950		11,335,365
FDIC loss share receivables	69,627		19,606		—		—		19,606
Derivative instruments	32,903		32,903		—		32,903		—
Financial Liabilities
Deposits	$	12,520,525	$	12,298,017	$	—	$	—	$	12,298,017
Short-term borrowings	845,742		845,742		845,742		—		—
Long-term debt	403,254		376,139		—		—		376,139
Derivative instruments	31,354		31,354		—		31,354		—