Exhibit 12.1

RATIO OF EARNINGS TO FIXED CHARGES

AND PREFERRED STOCK DIVIDEND REQUIREMENT

	Years Ended December 31,
(dollars in thousands)	2014			2013			2012			2011			2010
Earnings:
Income before income taxes	$	86,216		$	75,325		$	56,172		$	38,289		$	25,755
Fixed charges, excluding preferred stock dividend requirement	13,095			12,504			14,414			20,077			19,832
Total earnings including fixed charges (a)	$	99,311		$	87,829		$	70,586		$	58,366		$	45,587
Fixed charges:
Interest on deposits	$	9,638		$	10,614		$	12,057		$	17,248		$	16,886
Interest on customer repurchase agreements and federal funds purchased	143			254			325			685			731
Interest on short-term borrowings	31			—			3			—			27
Interest on long-term borrowings deposits	3,283			1,636			2,029			2,144			2,188
Preferred stock dividend requirements (pre-tax)	976			907			901			2,356			2,009
Total fixed charges (b)	$	14,071		$	13,411		$	15,315		$	22,433		$	21,841
Ratio of earnings to fixed charges and preferred stock dividend requirement (pre-tax) (a/b)	7.06		x	6.55		x	4.61		x	2.60		x	2.09		x
Earnings, excluding interest on deposits:
Total earnings including fixed charges	$	99,311		$	87,829		$	70,586		$	58,366		$	45,587
Less interest on deposits	9,638			10,614			12,057			17,248			16,886
Total earnings excluding interest on deposits (c)	$	89,673		$	77,215		$	58,529		$	41,118		$	28,701
Fixed charges, excluding interest on deposits:
Total fixed charges	$	14,071		$	13,411		$	15,315		$	22,433		$	21,841
Less interest on deposits	9,638			10,614			12,057			17,248			16,886
Total fixed charges, excluding interest on deposits (d)	$	4,433		$	2,797		$	3,258		$	5,185		$	4,955
Ratio of earnings to fixed charges and preferred stock dividend requirement (pre-tax), excluding interest on deposits (c/d)	20.23		x	27.61		x	17.96		x	7.93		x	5.79		x