CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 259,219	$ 252,415
Receivables	333,467	326,543
Inventories	64,335	56,217
Deferred income taxes, net	51,413	24,348
Other current assets	46,965	18,111
Total current assets	755,399	677,634
Investments	8,500	8,600
Property, plant and equipment, net	259,972	232,706
Goodwill	75,261	74,747
Deferred income taxes, net	2,731	47,806
Other non-current assets	28,937	21,043
Total assets	1,130,800	1,062,536
Current liabilities:
Accounts payable	13,444	19,928
Accrued expenses	220,935	228,907
Deferred revenues and customer advances	104,970	112,182
Total current liabilities	339,349	361,017
Long-term obligations	131,182	125,535
Other non-current liabilities	16,990	7,367
Total liabilities	487,521	493,919
Commitments and contingencies
Stockholders' equity:
Preferred Stock, par value $.01; 10,000,000 shares authorized, none outstanding
Common Stock, par value $.01;200,000,000 shares authorized, 58,914,802 and 58,239,875 shares outstanding, respectively	589	582
Additional paid-in capital	566,624	558,015
Accumulated other comprehensive loss	(3,359)	(2,011)
Retained earnings	79,425	12,031
Total stockholders' equity	643,279	568,617
Total liabilities and stockholders' equity	$ 1,130,800	$ 1,062,536