PARENT COMPANY FINANCIALS ONLY (Tables)

12 Months Ended

Dec. 31, 2017

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Schedule of Condensed Balance Sheets

BALANCE SHEETS

	December 31
	2017		2016
	(Dollars in thousands)
Assets
Cash(1)	$	48,131	$	42,596
Investments in subsidiaries(2)	1,010,125		935,778
Prepaid income taxes	786		625
Deferred tax asset	96		216
Derivative instruments(1)	1,535		1,364
Total assets	$	1,060,673	$	980,579
Liabilities and stockholders’ equity
Dividends payable	$	8,786	$	7,834
Junior subordinated debentures	73,073		73,107
Subordinated debentures	34,682		34,635
Other liabilities	323		313
Total liabilities	116,864		115,889
Stockholders’ equity	943,809		864,690
Total liabilities and stockholders’ equity	$	1,060,673	$	980,579

(1) Entire balance eliminates in consolidation.

(2) $1.0 billion and $933.6 million eliminate in consolidation at December 31, 2017 and 2016, respectively.

Schedule of Condensed Statements of Income

STATEMENTS OF INCOME

	Years Ended December 31
	2017			2016			2015
	(Dollars in thousands)
Income
Dividends received from subsidiaries(1)	$	47,006		$	44,598		$	38,153
Interest income(2)	50			98			78
Total income	47,056			44,696			38,231
Expenses
Interest expense	3,995			5,901			5,769
Other expenses	—			—			29
Total expenses	3,995			5,901			5,798
Income before income taxes and equity in undistributed income of subsidiaries	43,061			38,795			32,433
Income tax benefit	(1,523		)	(1,791		)	(2,301		)
Income of parent company	44,584			40,586			34,734
Equity in undistributed income of subsidiaries	42,620			36,062			30,226
Net income	$	87,204		$	76,648		$	64,960

(1) Income of $67,000, $62,000 and $55,000 was not eliminated in consolidation for the years ended December 31, 2017, 2016, and 2015, respectively.

(2) Entire balance eliminated in consolidation.

Schedule of Condensed Statements of Cash Flows

STATEMENTS OF CASH FLOWS

	Years Ended December 31
	2017			2016			2015
	(Dollars in thousands)
Cash flows from operating activities
Net income	$	87,204		$	76,648		$	64,960
Adjustments to reconcile net income to cash provided by operating activities
Amortization (accretion)	12			(154		)	(150		)
Deferred income tax expense	51			678			3,266
Change in other assets	(99		)	423			7,488
Change in other liabilities	(562		)	(5,532		)	(254		)
Equity in undistributed income of subsidiaries	(42,620		)	(36,062		)	(30,226		)
Net cash provided by operating activities	43,986			36,001			45,084
Cash flows used in investing activities
Cash paid for acquisitions, net of cash acquired (1)	(4,834		)	(950		)	(51,680		)
Net cash used in investing activities	(4,834		)	(950		)	(51,680		)
Cash flows used in financing activities
Restricted stock awards issued, net of awards surrendered	(1,422		)	(696		)	(657		)
Net proceeds from exercise of stock options	214			201			1,367
Proceeds from shares issued under the direct stock purchase plan	1,636			2,323			2,695
Common dividends paid	(34,045		)	(29,711		)	(26,172		)
Net cash used in financing activities	(33,617		)	(27,883		)	(22,767		)
Net increase (decrease) in cash and cash equivalents	5,535			7,168			(29,363		)
Cash and cash equivalents at the beginning of the year	42,596			35,428			64,791
Cash and cash equivalents at the end of the year	$	48,131		$	42,596		$	35,428

(1) The majority of the net assets acquired at the parent company represented each of the acquired companies' investments in their wholly owned subsidiaries, which were eliminated in consolidation at December 31, 2017, 2016, and 2015, respectively.