Property and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and Equipment

Property and equipment consisted of the following:

		As of December 31,
	Useful life	2017		2016
Non-communications:
Computer equipment and software	1-5 years	$	124,708	97,317
Building and building improvements	5-39 years	24,003		13,363
Office furniture and equipment	3-7 years	15,210		12,344
Leasehold improvements	5-15 years	7,759		3,579
Transportation equipment	4-10 years	3,813		3,809
Land	—	2,628		1,682
Construction in progress	—	4,127		16,346
		182,248		148,440
Accumulated depreciation - non-communications		105,017		91,285
Non-communications, net property and equipment		77,231		57,155
Communications:
Network plant and fiber	5-15 years	138,122		40,844
Customer located property	5-10 years	13,767		5,138
Central office	5-15 years	10,754		6,448
Transportation equipment	4-10 years	5,759		2,966
Computer equipment and software	1-5 years	3,790		2,026
Other	1-39 years	2,516		1,268
Land	—	70		70
Construction in progress	—	11,620		12,537
		186,398		71,297
Accumulated depreciation - communications		15,578		4,666
Communications, net property and equipment		170,820		66,631
Total property and equipment, net		$	248,051	123,786

The Company recorded depreciation expense on its property and equipment of $30.2 million, $22.4 million, and $16.5 million during the years ended December 31, 2017, 2016, and 2015, respectively.