Acquired Intangible Assets, net

The Company evaluates the recoverability of its long-lived assets for impairment when indicators of potential impairment arise. The Company did not recognize any impairment of its acquired intangible assets during fiscal year 2016 or 2015.

As a result of the divestiture of the PowerReviews business (See Note 3), the Company evaluated the recoverability of its long-lived assets resulting from the acquisition of PowerReviews. The Company performed the first step of impairment test by comparing the undiscounted cash flows to be generated by the asset group allocated to PowerReviews (inclusive of the value of the customer relationships and developed technology) to the carrying value of the asset group as of April 30, 2014. Undiscounted cash flows included the cash flows resulting from the continued operation of the asset group plus estimated probability weighted proceeds from a potential divestiture. The undiscounted cash flows of the assets did not exceed the carrying value of the asset group as of April 30, 2014. As a result, the Company incurred a $2.5 million impairment loss, $2.4 million of which was allocated to customer relationships and $0.1 million of which was allocated to developed technology. Due to the classification of the PowerReviews business as discontinued operations, the $2.5 million impairment loss is included in the loss from discontinued operations, net of tax, in the consolidated statements of operations for fiscal year ended April 30, 2014.

Acquired intangible assets, net, as of April 30, 2016 and April 30, 2015 for continuing operations are as follows (in thousands):



	April 30, 2016							April 30, 2015
	Gross Fair Value		Accumulated Amortization			Net Book Value		Gross Fair Value		Accumulated Amortization			Net Book Value
Customer relationships	$	11,835	$	(4,158	)	$	7,677	$	11,835	$	(2,921	)	$	8,914
Developed technology	3,265		(1,335		)	1,930		3,265		(681		)	2,584
Total	$	15,100	$	(5,493	)	$	9,607	$	15,100	$	(3,602	)	$	11,498

The amortization of customer relationships is recorded as amortization expense and the amortization for developed technology is recorded in cost of revenue. For the years ended April 30, 2016 and April 30, 2015, the Company incurred amortization expense of acquired intangible assets of $1.9 million and $1.9 million, respectively.

The following table presents our estimate of future amortization expense for definite-lived intangible assets (in thousands):



Fiscal period:	Amount
Fiscal year 2017	$	1,890
Fiscal year 2018	1,890
Fiscal year 2019	1,856
Fiscal year 2020	1,130
Fiscal year 2021	1,130
Thereafter	1,711
Total	$	9,607