CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities
Net income	$ 55,168	$ 44,627	$ 21,705
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	3,296	596	941
Provision for loan losses	10,642	6,245	3,413
Accretion of acquisition discount on purchased loans	(28,242)	(21,078)	(27,888)
Depreciation	8,756	6,155	4,683
Amortization of core deposit intangible	5,939	3,098	2,157
Amortization of acquisition premium on time deposits	(1,600)	(3,109)	(3,381)
Net accretion of acquisition discount on borrowings	396	557	704
Gains on sales of branches	0	(88)	(415)
Gain (loss) on mortgage loan commitments	(20)	(66)	13
Gain on sales of loans held for sale	(23,233)	(17,906)	(12,335)
Originations of loans held for sale	(540,898)	(401,808)	(320,448)
Proceeds from sales of loans held for sale	590,550	392,632	336,937
Increase in cash surrender value of bank-owned life insurance	5,726	(1,873)	(1,536)
Deferred income taxes	24,635	20,706	9,905
Change in deferred tax asset valuation allowance	(296)	(126)	(4,797)
Gain (loss) on sales of available for sale securities	564	0	(126)
Net amortization of premiums on available for sale securities	7,737	5,170	4,260
Net gain on disposal of foreclosed assets	414	(146)	(28)
Valuation adjustments on foreclosed assets	(1,285)	605	497
Change in assets and liabilities:
(Increase) decrease in accrued interest receivable	310	(652)	(820)
Increase in other assets	(5,085)	(13,811)	(7,120)
Increase (decrease) in accrued interest payable	(328)	(138)	139
Increase (decrease) in other liabilities	(12,752)	(1,235)	7,709
Net cash provided by operating activities	100,394	18,355	14,169
Cash flows from investing activities
Purchases of investment securities available for sale	(307,551)	(214,369)	(210,340)
Purchases of investment securities held to maturity	0	0	(18,713)
Proceeds from maturities and repayments of investment securities available for sale	247,919	102,155	55,661
Proceeds from call of investment securities held to maturity	0	0	500
Proceeds from sales of investment securities available for sale	182,037	87,123	128,162
Loan originations and principal collections, net	(63,967)	(160,260)	(121,090)
Proceeds from sales of loans	7,308	5,294	2,076
Purchases of loans	0	(24,807)	0
Net cash received in business combinations	45,143	0	36,116
Net cash paid in branch sale	0	(21,235)	(10,837)
Purchases of interest rate caps	0	0	(1,278)
Purchases of trade accounts receivable, net	47,708	(7,867)	(26,096)
Purchases of premises and equipment	(2,774)	(4,615)	(7,004)
Disposals of premises and equipment	5,391	4,394	3,954
Proceeds from disposal of foreclosed assets	7,887	6,327	6,458
Purchases of Federal Home Loan Bank stock	5,196	(5,345)	(6,792)
Purchase of bank-owned life insurance	0	0	(15,000)
Investment in tax credit fund	0	(6,778)	0
Net cash provided by (used in) investing activities	174,297	(239,983)	(184,223)
Cash flows from financing activities
Net increase (decrease) in deposits	(79,336)	97,138	79,780
Proceeds from (repayments of) short-term borrowings, net	(196,235)	34,500	33,621
Proceeds from issuance of long-term debt, net	45,337	104,746	101,308
Proceeds from exercise of stock options	2,451	346	143
Proceeds from issuance of subsidiary common stock, net of issuance costs	0	0	44,466
Repurchase of subsidiary preferred stock	0	0	(42,849)
Repurchase of subsidiary common stock warrants	0	0	(2,552)
Distribution to legacy shareholders of Piedmont Community Bank Holdings, Inc.	0	0	(9,809)
Cancellation of restricted stock for tax withholding	0	0	(872)
Cancellation and payout of fractional shares issued in merger	0	0	(14)
Repurchase of preferred stock	0	(28,405)	0
Dividends paid on subsidiary preferred stock	0	0	(314)
Dividends paid on preferred and common stock	0	(822)	(1,269)
Dividends paid on common stock	(34,413)	(6,322)	0
Net cash provided by (used in) financing activities	(262,196)	201,181	201,639
Net change in cash and cash equivalents	12,495	(20,447)	31,585
Cash and cash equivalents, beginning of period	111,918	132,365	100,780
Cash and cash equivalents, end of period	124,413	111,918	132,365
Cash payments for:
Interest	32,467	22,243	15,785
Income taxes	10,600	2,925	240
Noncash investing activities:
Transfers of loans to foreclosed assets	14,403	9,193	9,300
Change in fair value of securities available for sale, net of tax	(6,836)	(2,253)	5,369
Change in fair value of cash flow hedge, net of tax	354	(3,020)	(3,439)
Change pension obligation, net of tax	326	0	0
Acquisition:
Assets acquired (excluding goodwill)	2,778,780	0	1,803,903
Liabilities assumed	2,534,830	0	1,621,565
Other equity interests acquired	0	0	29,122
Purchase price	431,336	0	279,115
Goodwill recorded	$ 187,386	$ 0	$ 125,899