Premises and Equipment and Leases Premises and Equipment and Leases (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Premises and Equipment [Table Text Block]

Premises and equipment at December 31 are summarized as follows (in thousands):

	December 31,
	2020		2019
Land	$	69,776	$	69,960
Buildings and improvements	440,528		421,952
Software and related integration	120,444		98,487
Furniture and equipment	165,344		135,153
Construction in progress	46,949		53,498
Premises and equipment	843,041		779,050
Less accumulated depreciation	291,733		243,531
Premises and equipment, net of accumulated depreciation	$	551,308	$	535,519