CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands	Oct. 02, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 382,528	$ 367,827
Short-term investments, at cost which approximates market	16,697	16,707
Accounts receivable, net	197,818	181,128
Inventories	97,525	86,464
Prepaid expenses and other current assets	23,917	23,446
Total current assets	718,485	675,572
Property, plant and equipment, less accumulated depreciation and depletion - October 2, 2011 - $930,089; December 31, 2010 - $905,625	322,574	332,797
Goodwill	65,359	67,156
Other assets and deferred charges	37,950	40,580
Total assets	1,144,368	1,116,105
Current liabilities:
Short-term debt	5,370	4,611
Current maturities of long-term debt	8,549	0
Accounts payable	105,997	80,728
Restructuring liabilities	1,616	3,484
Other current liabilities	61,650	66,414
Total current liabilities	183,182	155,237
Long-term debt	85,721	92,621
Other non-current liabilities	83,532	85,552
Total liabilities	352,435	333,410
Shareholders' equity:
Common stock	2,912	2,897
Additional paid-in capital	332,531	323,235
Retained earnings	944,374	899,211
Accumulated other comprehensive income (loss)	(4,759)	(3,590)
Less common stock held in treasury	(511,237)	(466,230)
Total MTI shareholders' equity	763,821	755,523
Non-controlling interest	28,112	27,172
Total shareholders' equity	791,933	782,695
Total liabilities and shareholders' equity	$ 1,144,368	$ 1,116,105