Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 521,375	$ 905,561
Short-term investments	44,491	44,148
Accounts receivable, less reserve of $5,721 in 2017 and $2,696 in 2016	477,074	375,169
Inventories	137,204	124,325
Prepaid expenses and other	55,120	78,067
Assets held for sale		45,352
Current assets of discontinued operations	3	64
Total current assets	1,235,267	1,572,686
INVESTMENTS	84,026	84,955
PROPERTY, PLANT AND EQUIPMENT, at cost:
Contract drilling equipment	8,197,572	7,881,544
Construction in progress	169,326	98,313
Real estate properties	66,005	62,929
Other	450,031	444,843
Property, Plant and Equipment, gross	8,882,934	8,487,629
Less-Accumulated depreciation	3,881,883	3,342,896
Net property, plant and equipment	5,001,051	5,144,733
NONCURRENT ASSETS:
Goodwill	51,705	4,718
Intangible assets, net of amortization	50,785	919
Other assets	17,154	24,008
Total noncurrent assets	119,644	29,645
TOTAL ASSETS	6,439,988	6,832,019
CURRENT LIABILITIES:
Accounts payable	135,628	95,422
Accrued liabilities	208,683	234,639
Current liabilities of discontinued operations	74	59
Total current liabilities	344,385	330,120
NONCURRENT LIABILITIES:
Long-term debt	492,902	491,847
Deferred income taxes	1,332,689	1,342,456
Other	101,409	102,781
Noncurrent liabilities of discontinued operations	4,012	3,890
Total noncurrent liabilities	1,931,012	1,940,974
SHAREHOLDERS' EQUITY:
Common stock, $.10 par value, 160,000,000 shares authorized, 111,956,875 and 111,400,339 shares issued as of September 30, 2017 and 2016, respectively, and 108,604,047 and 108,077,916 shares outstanding as of September 30, 2017 and 2016, respectively	11,196	11,140
Preferred stock, no par value, 1,000,000 shares authorized, no shares issued
Additional paid-in capital	487,248	448,452
Retained earnings	3,855,686	4,289,807
Accumulated other comprehensive income (loss)	2,300	(204)
Total shareholders' equity before treasury stock	4,356,430	4,749,195
Treasury stock, at cost	(191,839)	(188,270)
Total shareholders' equity	4,164,591	4,560,925
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 6,439,988	$ 6,832,019

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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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).