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
		July 31,																October 31,
		2019																2018
		Gross												Net				Gross								Net
		Carrying				Accumulated								Carrying				Carrying				Accumulated				Carrying
(in thousands)		Value				Amortization				CTA				Amount				Value				Amortization				Amount
Customer relationship		$	191,918			$	(21,871	)		$	144			$	170,191			$	47,641			$	(23,093	)		$	24,548
Trade name			5,133				(352	)			17				4,798				15,412				(3,540	)			11,872
Trade name (indefinite life)			55,500				-				-				55,500				-				-				-
Non-compete agreements			200				(12	)			-				188				495				(486	)			9
Balance at period end		$	252,751			$	(22,235	)		$	161			$	230,677			$	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 July 31, 2019)		$	9,907
2020			33,312
2021			27,233
2022			21,852
2023			17,283
Thereafter			65,590
Total		$	175,177

 

The changes in the carrying value of goodwill by reportable segment for the quarter ended are as follows:

 

(in thousands)		U.S. Concrete Pumping				U.K. Concrete Pumping				Eco-Pan				Corporate				Total
Balance at April 30, 2019		$	165,919			$	22,804			$	46,258			$	2,459			$	237,440
Measurement-period adjustments			(1,887	)			18,158				2,875				-				16,687
Prior period adjustment of sales tax accrual			(3,400	)			-				-				-				(3,400	)
Acquired goodwill			27,733				-				-				(2,459	)			27,733
Foreign currency translation			-				(1,409	)			-				-				(1,409	)
Balance at July 31, 2019		$	188,365			$	39,553			$	49,133			$	-			$	277,051

 

As discussed in Note – Business Combinations, the Company recorded an out of period adjustment related to the reduction of sales tax accrual of million that resulted in changes to goodwill and liabilities assumed in the transaction. The impact of the adjustment was considered material to previously issued financial statements. A significant decline in the Company's price per share as of triggered a step goodwill impairment analysis for the quarter ended The results of this test indicated that impairment was required.