Intangible Assets

Intangible assets consisted of the following:



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
June 30, 2017
Customer relationships	$	117,630	$	(31,533	)	$	86,097	10.0 years
Licensing agreements and patents	1,131		(277		)	854		3.7 years
Completed technologies	44,503		(6,079		)	38,424		7.9 years
Backlog	5,430		(1,768		)	3,662		2.0 years
	$	168,694	$	(39,657	)	$	129,037
June 30, 2016
Customer relationships	$	105,370	$	(23,824	)	$	81,546	9.9 years
Licensing agreements and patents	756		(38		)	718		4.0 years
Completed technologies	35,840		(3,545		)	32,295		7.6 years
Backlog	2,330		(216		)	2,114		2.0 years
	$	144,296	$	(27,623	)	$	116,673

Estimated future amortization expense for intangible assets remaining at June 30, 2017 is as follows:



	Year Ending June 30,
2018	$	21,722
2019	17,542
2020	14,767
2021	14,165
2022	14,165
Thereafter	46,676
Total future amortization expense	$	129,037

The following table summarizes the preliminary estimated fair value of acquired intangible assets arising as a result of the Delta acquisition. These assets are included in the Company's gross and net carrying amounts as of June 30, 2017.



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	8,000	$	(225	)	$	7,775	9.1 years
Completed technologies	5,900		(148		)	5,752		10.0 years
Backlog	3,100		(388		)	2,712		2.0 years
	$	17,000	$	(761	)	$	16,239

The following table summarizes the preliminary estimated fair value of acquired intangible assets arising as a result of the CES acquisition. These assets are included in the Company's gross and net carrying amounts as of June 30, 2017.



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	9,060	$	(681	)	$	8,379	9.0 years
Completed technologies	5,662		(547		)	5,115		7.0 years
	$	14,722	$	(1,228	)	$	13,494

The following table summarizes the fair value of acquired intangible assets arising as a result of the Carve-Out Business acquisition. These assets are included in the Company's gross and net carrying amounts as of June 30, 2017.



	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Useful Life
Customer relationships	$	70,900	$	(7,856	)	$	63,044	11.5 years
Completed technologies	29,700		(4,690		)	25,010		7.8 years
Backlog	2,200		(1,283		)	917		2.0 years
	$	102,800	$	(13,829	)	$	88,971