Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 31, 2017	Apr. 30, 2017	Oct. 31, 2016
ASSETS
Cash and cash equivalents	$ 180,997	$ 1,011,331	$ 232,510
Cash and cash equivalents - restricted	100,665	106,208	109,538
Receivables, less allowance for doubtful accounts of $55,265, $56,062 and $55,296	77,750	162,775	104,764
Prepaid expenses and other current assets	85,204	65,725	73,555
Total current assets	444,616	1,346,039	703,474
Property and equipment, at cost, less accumulated depreciation and amortization of $728,811, $647,689 and $678,161	262,226	263,827	293,060
Intangible assets, net	406,440	409,364	433,135
Goodwill	493,059	491,207	477,360
Deferred tax assets and income taxes receivable	9,205	83,728	81,755
Other noncurrent assets	101,015	99,943	93,394
Total assets	1,716,561	2,694,108	2,082,178
LIABILITIES:
Accounts payable and accrued expenses	114,875	217,028	139,808
Accrued salaries, wages and payroll taxes	42,897	183,856	40,754
Accrued income taxes and reserves for uncertain tax positions	43,879	348,199	68,832
Current portion of long-term debt	1,004	981	903
Deferred revenue and other current liabilities	190,522	189,216	184,560
Total current liabilities	393,177	939,280	434,857
Long-term debt	1,493,828	1,493,017	1,967,206
Reserves for uncertain tax positions	138,024	159,085	117,553
Deferred revenue and other noncurrent liabilities	104,305	163,609	120,033
Total liabilities	2,129,334	2,754,991	2,639,649
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY:
Common stock, no par, stated value $.01 per share, 800,000,000 shares authorized, shares issued of 246,198,878, 250,578,382 and 246,198,878	2,462	2,462	2,506
Additional paid-in capital	753,423	754,912	751,229
Accumulated other comprehensive loss	(14,222)	(15,299)	(17,122)
Retained deficit	(433,556)	(48,206)	(538,242)
Less treasury shares, at cost, of 37,130,454, 39,085,220 and 39,027,573	(720,880)	(754,752)	(755,842)
Total stockholders' equity (deficiency)	(412,773)	(60,883)	(557,471)
Total liabilities and stockholders' equity	1,716,561	2,694,108	2,082,178
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Mortgage	$ 0	$ 0	$ 183,107

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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- 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.