CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net income		$ 30,916	$ 21,778
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of premises and equipment		1,597	1,536
Provision for loan losses		5,600	18,900
Amortization of intangibles		728	338
Net accretion of loans		(2,450)	(806)
Accretion on bank premises		(43)	(33)
Accretion on deposits		(639)	(31)
Amortization (accretion) on borrowings		114	(82)
Stock-based compensation expense		1,470	(98)
Losses on sales of investment securities, net	[1]	1
(Gains) losses on equity securities, net		(261)	168
Gains on sales of loans held-for-sale, net		(65)	(29)
Loans originated for resale		(4,044)	(1,498)
Proceeds from sale of loans held-for-sale		4,109	1,897
Loss on extinguishment of debt		1,047
Increase in cash surrender value of bank owned life insurance		(1,655)	(964)
Amortization of premiums and accretion of discounts on investments securities, net		1,759	1,832
Amortization of subordinated debt issuance costs		164	168
Increase in accrued interest receivable		(624)	(1,284)
Net change in operating leases		1,390
Decrease (increase) in other assets		4,231	(126)
(Decrease) increase in other liabilities		(8,078)	12,633
Net cash provided by operating activities		35,267	54,299
Investment securities available-for-sale:
Purchases		(141,739)	(60,595)
Sales		150,332
Maturities, calls and principal repayments		91,028	75,506
Sales of equity securities		569
Net (purchases) redemptions of restricted investment in bank stocks		(631)	1,056
Payments on loans held-for-sale			159
Net increase in loans		(186,892)	(181,868)
Purchases of premises and equipment		(649)	(233)
Cash and cash equivalents acquired in acquisition		13,741
Cash consideration paid in acquisition		(2,530)
Net cash used in investing activities		(76,771)	(165,975)
Cash flows from financing activities
Net increase in deposits		133,580	110,313
Increase in subordinated debentures			73,525
Advances of Federal Home Loan Bank ("FHLB") borrowings		892,000	863,000
Repayments of FHLB borrowings		(960,031)	(904,000)
Repurchase of treasury stock		(5,175)
Cash dividends paid on common stock		(5,851)	(4,827)
Proceeds from exercise of stock options		265	252
Net cash provided by financing activities		54,788	138,263
Net change in cash and cash equivalents		13,284	26,587
Cash and cash equivalents at beginning of period		172,366	149,582
Cash and cash equivalents at end of period		185,650	176,169
Cash payments for:
Interest paid on deposits and borrowings		44,169	25,055
Income taxes		7,816	1,497
Supplemental disclosures of noncash investing activities
Transfer of loans to other real estate owned			538
Transfer of loans held-for-investment to loans held-for-sale			21,236
Transfer of loans held-for-sale to held-for-investment			45,552
Business combinations:
Fair value of net assets acquired, net of cash and cash equivalents		534,146
Fair value of liabilities assumed		$ 488,475

[1] Not within scope of ASC 606.