CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands	Jul. 03, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 396,106	$ 367,827
Short-term investments, at cost which approximates market	16,763	16,707
Accounts receivable, net	200,700	181,128
Inventories	97,731	86,464
Prepaid expenses and other current assets	28,260	23,446
Total current assets	739,560	675,572
Property, plant and equipment, less accumulated depreciation and depletion - July 3, 2011 - $943,336; December 31, 2010 - $905,625	329,813	332,797
Goodwill	67,348	67,156
Other assets and deferred charges	38,542	40,580
Total assets	1,175,263	1,116,105
Current liabilities:
Short-term debt	4,517	4,611
Current maturities of long-term debt	543	0
Accounts payable	107,206	80,728
Restructuring liabilities	1,985	3,484
Other current liabilities	58,593	66,414
Total current liabilities	172,844	155,237
Long-term debt	93,710	92,621
Other non-current liabilities	87,060	85,552
Total liabilities	353,614	333,410
Shareholders' equity:
Common stock	2,911	2,897
Additional paid-in capital	330,500	323,235
Retained earnings	929,580	899,211
Accumulated other comprehensive income (loss)	18,871	(3,590)
Less common stock held in treasury	(489,867)	(466,230)
Total MTI shareholders' equity	791,995	755,523
Non-controlling interest	29,654	27,172
Total shareholders' equity	821,649	782,695
Total liabilities and shareholders' equity	$ 1,175,263	$ 1,116,105