The Company recognized goodwill and certain intangible assets in connection with business combinations (see Note - Business Combinations). The following table summarizes the composition of intangible assets at for the Successor and at for the Predecessor:

 

		Successor												Predecessor
		April 30,												October 31,
		2019												2018
		Gross								Net				Gross								Net
		Carrying				Accumulated				Carrying				Carrying				Accumulated				Carrying
(in thousands)		Value				Amortization				Amount				Value				Amortization				Amount
Customer relationship		$	170,312			$	(11,627	)		$	158,685			$	47,641			$	(23,093	)		$	24,548
Trade name			5,241				(211	)			5,030				15,412				(3,540	)			11,872
Trade name (indefinite life)			46,900				-				46,900				-				-				-
Noncompete agreements			-				-				-				495				(486	)			9
		$	222,453			$	(11,838	)		$	210,615			$	63,548			$	(27,119	)		$	36,429

 

Amortization expense for the Successor for the -month period ended and the period from to was  million and million, respectively. Amortization expense for the Predecessor from to and for the and -month periods ended was million, million, and million, respectively. The estimated aggregate amortization expense for intangible assets over the next fiscal years ending and thereafter is as follows:

 

(in thousands)
2019 (excluding the period from December 6, 2018 to April 30, 2019)		$	17,566
2020			26,650
2021			21,657
2022			17,531
2023			14,019
Thereafter			66,292
		$	163,715