The following tables provide information on non-PCI impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogeneous group, including interest income recognized in the period during which the loans and leases were considered impaired.



	December 31, 2017
(Dollars in thousands)	With a recorded allowance		With no recorded allowance		Total		Unpaid principal balance		Related allowance recorded
Non-PCI impaired loans and leases
Construction and land development - commercial	$	788	$	—	$	788	$	1,110	$	185
Commercial mortgage	39,135		34,520		73,655		78,936		3,648
Other commercial real estate	1,351		506		1,857		2,267		209
Commercial and industrial	6,326		1,648		7,974		10,475		665
Lease financing	1,890		24		1,914		2,571		397
Other	—		521		521		521		—
Residential mortgage	19,135		18,707		37,842		39,946		2,733
Revolving mortgage	5,875		17,895		23,770		25,941		1,085
Construction and land development - noncommercial	592		3,959		4,551		5,224		68
Consumer	2,107		667		2,774		3,043		738
Total non-PCI impaired loans and leases	$	77,199	$	78,447	$	155,646	$	170,034	$	9,728

	December 31, 2016
(Dollars in thousands)	With a recorded allowance		With no recorded allowance		Total		Unpaid principal balance		Related allowance recorded
Non-PCI impaired loans and leases
Construction and land development - commercial	$	1,002	$	43	$	1,045	$	1,172	$	151
Commercial mortgage	42,875		33,486		76,361		82,658		3,488
Other commercial real estate	1,279		284		1,563		1,880		152
Commercial and industrial	8,920		3,680		12,600		16,637		1,732
Lease financing	1,002		72		1,074		1,074		75
Other	142		—		142		233		23
Residential mortgage	20,269		11,207		31,476		32,588		2,447
Revolving mortgage	1,825		5,788		7,613		8,831		366
Construction and land development - noncommercial	645		1,968		2,613		3,030		109
Consumer	1,532		380		1,912		2,086		667
Total non-PCI impaired loans and leases	$	79,491	$	56,908	$	136,399	$	150,189	$	9,210

Non-PCI impaired loans less than $500,000 that are collectively evaluated were $49.1 million and $47.4 million at December 31, 2017 and 2016, respectively.

The following tables show the average non-PCI impaired loan balance and the interest income recognized by loan class for the years ended December 31, 2017, 2016 and 2015:



	Year ended December 31, 2017
(Dollars in thousands)	YTD Average Balance		YTD Interest Income Recognized
Non-PCI impaired loans and leases:
Construction and land development - commercial	$	858	$	37
Commercial mortgage	73,815		2,596
Other commercial real estate	1,642		34
Commercial and industrial	9,847		376
Lease financing	1,753		51
Other	426		22
Residential mortgage	33,818		990
Revolving mortgage	14,022		436
Construction and land development - noncommercial	3,383		145
Consumer	2,169		103
Total non-PCI impaired loans and leases	$	141,733	$	4,790

	Year ended December 31, 2016
Non-PCI impaired loans and leases:
Construction and land development - commercial	$	2,700	$	138
Commercial mortgage	82,146		2,671
Other commercial real estate	1,112		38
Commercial and industrial	11,878		417
Lease financing	1,307		63
Other	687		33
Residential mortgage	26,774		805
Revolving mortgage	6,915		171
Construction and land development - noncommercial	983		50
Consumer	1,480		80
Total non-PCI impaired loans and leases	$	135,982	$	4,466

	Year ended December 31, 2015
Non-PCI impaired loans and leases:
Construction and land development - commercial	$	3,164	$	146
Commercial mortgage	89,934		3,129
Other commercial real estate	481		12
Commercial and industrial	14,587		510
Lease financing	1,718		74
Other	1,673		37
Residential mortgage	18,524		557
Revolving mortgage	4,368		97
Construction and land development - noncommercial	829		38
Consumer	1,126		75
Total non-PCI impaired loans and leases	$	136,404	$	4,675