Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Classes of Intangible Assets

Intangible assets as of March 31, 2018 and December 31, 2017 consisted of the following (in thousands): 

		March 31, 2018
	Amortization Period	Cost		Accumulated Amortization		Net
Customer Relationships	156 - 180 months	$	85,068	$	12,336	$	72,732
Non-Compete Agreement	36 months	26		7		19
Total		$	85,094	$	12,343	$	72,751

		December 31, 2017
	Amortization Period	Cost		Accumulated Amortization		Net
Customer Relationships	156 - 180 months	$	85,068	$	10,925	$	74,143
Non-Compete Agreement	36 months	26		4		22
Trade Name	24 months	3,000		3,000		—
Total		$	88,094	$	13,929	$	74,165

Estimated Amortization Expense

The estimated amortization expense related to amortizable intangible assets for each of the five succeeding fiscal years and thereafter as of March 31, 2018 is as follows (in thousands):

Remainder of 2018	$	4,271
2019	5,680
2020	5,671
2021	5,671
2022	5,671
Thereafter	45,787
Total	$	72,751