FAIR VALUE MEASUREMENTS - Additional Information (Detail)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2011 Level 1 Inputs USD ($)	Dec. 31, 2010 Level 1 Inputs USD ($)	Dec. 31, 2010 Level 1 Inputs Japan JPY (¥)	Dec. 31, 2011 Level 3 Inputs USD ($)	Dec. 31, 2010 Level 3 Inputs USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalent	$ 22,511,000	$ 79,276,000	$ 22,511,000	$ 79,276,000		$ 0	$ 0
Certificates of deposit				15,800,000
Money market account			400,000	400,000
Borrowing to finance acquisitions					1,200,000,000
Contingent consideration	9,921,000	16,450,000	0	0		9,921,000	16,450,000
Debt obligation, fair value	1,410,000,000	1,108,000,000
Debt obligation, carrying value	$ 1,384,639,000	$ 1,105,628,000