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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The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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INVESTMENTS - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended				6 Months Ended
	Oct. 01, 2015	Jan. 03, 2014	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Jan. 02, 2014	Dec. 31, 2008
Investment [Line Items]
Percentage ownership by parent									50.01%
Investment in unconsolidated affiliates			$ 22,788				$ 22,788		$ 21,566
Cash received from partial sale of equity method investment							0	$ 9,128
Gain on partial sale of equity method investment			0		$ 0		0	8,849
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	16.70%	15.00%
Potential percentage of equity investment		20.00%
Additional investments in equity method investee	$ 2,369	$ 6,500
Dividends received			1,235		835
Investment in unconsolidated affiliates			20,700		$ 19,082		20,700	$ 19,082
kununu US, LLC
Investment [Line Items]
Percentage of equity investment				50.00%
Additional investments in equity method investee				$ 3,000
Investment in unconsolidated affiliates			2,088				2,088
Annual fee							$ 1,500
Consulting fee			$ 500
CareerOne Pty Limited \| Australia
Investment [Line Items]
Percentage of equity investment						50.00%					50.00%
Additional investments in equity method investee						$ 451
Ownership percentage						10.00%
Cash received from partial sale of equity method investment						$ 9,128
Gain on partial sale of equity method investment						$ 8,849
Alma Media Corporation
Investment [Line Items]
Percentage ownership by parent										75.00%