Annual report pursuant to Section 13 and 15(d)

PARENT COMPANY FINANCIAL INFORMATION (Financial Information for the Parent Company - Statements of Cash Flows) (Details)

v3.3.1.900
PARENT COMPANY FINANCIAL INFORMATION (Financial Information for the Parent Company - Statements of Cash Flows) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Operating activities:      
Net income $ 67,079,000 $ 52,164,000 $ 34,366,000
Adjustments to reconcile net income to net cash and cash equivalents provided by (used in) operating activities      
Depreciation of premises and equipment 10,776,000 10,742,000 6,024,000
Amortization (accretion) related to acquisition, net 1,823,000 (255,000) 1,585,000
Losses (gains) on securities transactions, net (1,486,000) (1,695,000) (21,000)
Tax benefit from exercise of equity-based awards 178,000 187,000 54,000
Issuance of common stock for services 564,000 713,000 477,000
Decrease (increase) in other assets (1,901,000) 5,248,000 (27,377,000)
Net (decrease) increase in other liabilities (3,029,000) 4,315,000 6,348,000
Net cash and cash equivalents provided by (used in) operating activities 108,843,000 125,184,000 157,029,000
Investing activities:      
Sale of securities available for sale 101,154,000 289,389,000 43,354,000
Net decrease (increase) in premises and equipment (3,870,000) (7,124,000) (4,759,000)
Payments for equity method investment (355,000) (60,000) (2,000,000)
Cash received in acquisitions   49,989,000  
Net cash and cash equivalents provided by (used in) investing activities (375,286,000) 6,303,000 (218,690,000)
Financing activities:      
Advances (repayments) of short-term borrowings 1,584,000 74,211,000 131,685,000
Payments on long-term borrowings (7,920,000) 2,036,000 2,234,000
Cash dividends paid (29,082,000) (25,494,000) (12,535,000)
Net cash and cash equivalents provided by (used in) financing activities 275,843,000 (71,250,000) 51,782,000
Increase (decrease) in cash and cash equivalents 9,400,000 60,237,000 (9,879,000)
Cash and cash equivalents at beginning of the period 133,260,000 73,023,000 82,902,000
Cash and cash equivalents at end of the period 142,660,000 133,260,000 73,023,000
Supplemental schedule of noncash investing and financing activities      
Issuance of common stock in exchange for net assets in acquisition   549,523,000  
Transactions Related to Bank Acquisitions      
Assets acquired   2,957,521,000  
Liabilities assumed   2,642,120,000  
Parent Company [Member]      
Operating activities:      
Net income 67,079,000 52,164,000 34,366,000
Adjustments to reconcile net income to net cash and cash equivalents provided by (used in) operating activities      
Equity in distributed (undistributed) net income of subsidiaries (20,800,000) 15,909,000 (7,555,000)
Depreciation of premises and equipment 435,000 464,000 468,000
Amortization (accretion) related to acquisition, net 235,000 224,000  
Issuance of common stock for services 564,000 713,000 477,000
Decrease (increase) in other assets 902,000 2,964,000 (2,069,000)
Net (decrease) increase in other liabilities 6,124,000 (7,286,000) 1,737,000
Net cash and cash equivalents provided by (used in) operating activities 54,539,000 65,152,000 27,424,000
Investing activities:      
Net decrease (increase) in premises and equipment (35,000) 863,000  
Payments for equity method investment (355,000) (60,000) (2,000,000)
Cash received in acquisitions   4,735,000  
Net cash and cash equivalents provided by (used in) investing activities (390,000) 5,538,000 (2,000,000)
Financing activities:      
Advances (repayments) of short-term borrowings (8,000,000) 8,000,000  
Payments on long-term borrowings (625,000) (625,000) (625,000)
Cash dividends paid (29,082,000) (25,494,000) (12,535,000)
Net issuance (repurchase) common stock (15,748,000) (52,971,000) (8,677,000)
Net cash and cash equivalents provided by (used in) financing activities (53,455,000) (71,090,000) (21,837,000)
Increase (decrease) in cash and cash equivalents 694,000 (400,000) 3,587,000
Cash and cash equivalents at beginning of the period 9,692,000 10,092,000 6,505,000
Cash and cash equivalents at end of the period $ 10,386,000 9,692,000 $ 10,092,000
Supplemental schedule of noncash investing and financing activities      
Issuance of common stock in exchange for net assets in acquisition   549,523,000  
Transactions Related to Bank Acquisitions      
Assets acquired   2,957,521,000  
Liabilities assumed   $ 2,642,120,000