Line items represent reporting concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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INVESTMENTS - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended					9 Months Ended
	Jan. 03, 2014	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jan. 02, 2014	Dec. 31, 2008
Investment [Line Items]
Investment in unconsolidated affiliates		$ 18,955					$ 18,955		$ 20,700
Cash received from partial sale of equity method investment							9,128	$ 0
Gain on partial sale of equity method investment		0			$ 0		8,849	0
Finland
Investment [Line Items]
Percentage of equity investment										25.00%
Alma Career Oy \| Finland, Eastern Europe and Baltics
Investment [Line Items]
Percentage of equity investment	15.00%
Additional investments in equity method investee	$ 6,500
Investment in unconsolidated affiliates		$ 18,955			22,154		$ 18,955	22,154
Dividends received			$ 835			$ 199
CareerOne Pty Limited \| Australia
Investment [Line Items]
Percentage of equity investment											50.00%
Additional investments in equity method investee								1,331
Investment in unconsolidated affiliates					$ 536			$ 536
Ownership interest percentage				10.00%
Cash received from partial sale of equity method investment				$ 9,128
Gain on partial sale of equity method investment				$ 8,849