ACQUISITION (Detail) - USD ($) $ in Thousands			3 Months Ended
	Feb. 29, 2016	Aug. 07, 2015	Mar. 31, 2016	Dec. 31, 2015
Recognized amounts of identifiable assets acquired and liabilities assumed
Goodwill			$ 38,600	$ 37,286
Experton Group AG
Business Acquisition
Contingent consideration lower range	$ 0
Contingent consideration higher range	1,200
Preliminary allocable purchase price
Cash	554
Post-completion installment payment	554
Contingent consideration	881
Total allocable purchase price	1,989
Recognized amounts of identifiable assets acquired and liabilities assumed
Cash	110
Accounts receivable	412
Other assets	57
Intangible assets	1,091
Deferred income tax liability	(323)
Accounts payable	(51)
Accrued expenses and other	(521)
Net assets acquired	775
Goodwill	$ 1,214
Purchase price assigned to intangible assets and the amortization period
Amortizable intangible assets		$ 1,091
Experton Group AG | Customer relationships
Purchase price assigned to intangible assets and the amortization period
Amortizable intangible assets		$ 1,091
Asset Life		10 years
Experton Group AG | Selling, general and administrative
Recognized amounts of identifiable assets acquired and liabilities assumed
Acquisition related cost			$ 100