XML 94 R79.htm IDEA: XBRL DOCUMENT v3.3.1.900
Parent Company Financial Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Assets [Abstract]              
Cash and cash equivalents $ 146,636 $ 146,636 $ 158,926 $ 140,297 $ 146,636 $ 158,926 $ 163,668
Securities available for sale, at estimated fair value       1,174,544 1,013,171    
Trading securities       8,377 7,793    
Other assets       122,517 136,381    
Total assets       8,262,646 7,807,340    
Liabilities and Stockholders' Equity [Abstract]              
Total liabilities       7,380,642 6,943,159    
Stockholders' equity       882,004 864,181 816,569 582,273
Total liabilities and stockholders' equity       8,262,646 7,807,340    
Condensed Income Statements [Abstract]              
Securities gains 3,087 92 1,426        
Interest, dividend and other income 273,224 275,081 268,723        
Income before income tax benefit and equity in undistributed income of subsidiaries 116,628 112,303 89,943        
Income tax benefit (expense) (40,203) (37,229) (28,196)        
Net income 76,425 75,074 61,747        
Operating activities [Abstract]              
Net income 76,425 75,074 61,747        
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]              
Stock-based compensation 4,086 3,521 4,305        
Gains (losses) on sales of available-for-sale securities (3,034) (49) (1,283)        
Net change in other liabilities 5,236 5,286 (5,219)        
Net change in other assets 15,386 (19,601) 22,807        
Net cash provided by operating activities 124,543 87,811 119,298        
Investing activities [Abstract]              
Purchases of available-for-sale securities (481,262) (197,652) (353,714)        
Sales and maturities of available-for-sale securities 299,302 236,133 376,509        
Purchases of premises and equipment (8,193) (9,003) (5,766)        
Net cash used in investing activities (504,004) (143,741) (183,754)        
Financing activities [Abstract]              
Payments on long-term debt (498) (315,831) (163,595)        
Purchases of treasury shares (26,797) (72) (12,459)        
Cash dividends and payments for fractional shares (38,149) (36,905) (33,518)        
Net cash provided by financing activities 373,122 43,640 59,714        
Net (decrease) increase in cash and cash equivalents (6,339) (12,290) (4,742)        
Cash and cash equivalents at beginning of year 146,636 158,926 163,668        
Cash and cash equivalents at end of year 140,297 146,636 158,926        
NBT Bancorp Inc [Member]              
Assets [Abstract]              
Cash and cash equivalents 28,682 3,586 3,741 28,682 3,586 $ 3,741 $ 23,095
Securities available for sale, at estimated fair value       12,711 11,649    
Trading securities       8,042 6,761    
Investment in subsidiaries, on equity basis       941,731 947,880    
Other assets       65,133 61,829    
Total assets       1,056,299 1,031,705    
Liabilities and Stockholders' Equity [Abstract]              
Total liabilities       174,295 167,524    
Stockholders' equity       882,004 864,181    
Total liabilities and stockholders' equity       $ 1,056,299 $ 1,031,705    
Condensed Income Statements [Abstract]              
Dividends from subsidiaries 78,200 35,400 13,500        
Management fee from subsidiaries 92,629 87,116 84,778        
Securities gains 3,034 49 1,273        
Interest, dividend and other income 693 800 636        
Total revenue 174,556 123,365 100,187        
Operating expense 94,332 89,834 83,679        
Income before income tax benefit and equity in undistributed income of subsidiaries 80,224 33,531 16,508        
Income tax benefit (expense) (515) 631 (1,046)        
Dividends in excess of income (equity in undistributed income) of subsidiaries (3,284) 40,912 46,285        
Net income 76,425 75,074 61,747        
Operating activities [Abstract]              
Net income 76,425 75,074 61,747        
Adjustments to reconcile net income to net cash provided by operating activities [Abstract]              
Stock-based compensation 4,086 3,521 4,305        
Gains (losses) on sales of available-for-sale securities (3,034) 49 1,273        
Equity in undistributed income of subsidiaries 2,967 (75,824) (59,785)        
Cash dividend from subsidiaries 0 35,400 13,500        
Net change in other liabilities 6,770 18,594 (18,077)        
Net change in other assets (6,627) (25,151) 14,928        
Net cash provided by operating activities 80,587 31,663 17,891        
Investing activities [Abstract]              
Purchases of available-for-sale securities (3,083) (597) 0        
Sales and maturities of available-for-sale securities 5,297 140 1,948        
Net cash provided by acquisitions 0 0 2,232        
Purchases of premises and equipment (408) (640) (782)        
Net cash used in investing activities 1,806 (1,097) 3,398        
Financing activities [Abstract]              
Proceeds from the issuance of shares to employee benefit plans and other stock plans 7,692 5,943 5,512        
Purchases of treasury shares (26,797) (72) (12,459)        
Cash dividends and payments for fractional shares (38,149) (36,905) (33,518)        
Excess tax benefit from exercise of stock options (43) 313 (178)        
Net cash provided by financing activities (57,297) (30,721) (40,643)        
Net (decrease) increase in cash and cash equivalents 25,096 (155) (19,354)        
Cash and cash equivalents at beginning of year 3,586 3,741 23,095        
Cash and cash equivalents at end of year $ 28,682 $ 3,586 $ 3,741