CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 28, 2018	Apr. 30, 2018	Jul. 29, 2017	Apr. 30, 2017
Current assets:
Cash and cash equivalents	$ 170,788	$ 143,517	$ 117,473	$ 79,904
Short-term investments	118,303	113,649
Accounts receivable, net of allowance for doubtful accounts of $1,033 at July 28, 2018 and $1,080 at April 30, 2018	13,802	56,813
Unbilled receivables and retentions (inclusive of related party unbilled receivables of $9,504 at July 28, 2018 and $3,145 at April 30, 2018)	59,870	16,872
Inventories, net	42,244	37,425
Prepaid expenses and other current assets	5,196	5,103
Current assets of discontinued operations		25,668
Total current assets	410,203	399,047
Long-term investments	36,712	40,656
Property and equipment, net	19,347	19,219
Deferred income taxes	11,800	11,494
Other assets	2,299	3,002
Total assets	480,361	473,418
Current liabilities:
Accounts payable	12,939	21,340
Wages and related accruals	10,624	16,851
Income taxes payable	8,898	4,085
Customer advances	1,627	3,564
Other current liabilities	6,664	6,954
Current liabilities of discontinued operations		9,294
Total current liabilities	40,752	62,088
Deferred rent	1,476	1,536
Other non-current liabilities	958	622
Deferred tax liability	67	67
Liability for uncertain tax positions	49	49
Commitments and contingencies
Stockholders' equity:
Authorized shares—10,000,000; none issued or outstanding at July 28, 2018 and April 30, 2018
Issued and outstanding shares—23,923,342 shares at July 28, 2018 and 23,908,736 at April 30, 2018	2	2
Additional paid-in capital	170,789	170,139
Accumulated other comprehensive income (loss)	16	(21)
Retained earnings	266,243	238,913
Total AeroVironment stockholders' equity	437,050	409,033
Noncontrolling interest	9	23
Total equity	437,059	409,056
Total liabilities and stockholders' equity	$ 480,361	$ 473,418

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.