Premises and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Premises and Equipment

Premises and Equipment

The following table presents the major components of premises and equipment at December 31, 2017 and 2016:

(in thousands)	2017			2016			Estimated useful life
Land	$	36,167		$	43,820
Buildings and improvements	214,636			229,341			7-39 years
Furniture, fixtures and equipment	147,928			142,265			4-20 years
Software	86,681			78,669			3-7 years
Construction in progress and other	33,419			23,104
Total premises and equipment	518,831			517,199
Less: Accumulated depreciation and amortization	(249,649		)	(213,317		)
Premises and equipment, net	$	269,182		$	303,882

Depreciation expense totaled $50.1 million, $51.8 million and $47.6 million for the years endedDecember 31, 2017, 2016 and 2015, respectively.

Umpqua's subsidiaries have entered into a number of non-cancelable lease agreements with respect to premises and equipment. See Note 18 for more information regarding rent expense, net of rental income, and minimum annual rental commitments under non-cancelable lease agreements.