Acquisitions - Purchase Price Allocation for Acquisition (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 11, 2014
Euroscan Holdings B.V. [Member]
Business Acquisition [Line Items]
Cash		$ 280
Accounts receivable		2,613
Inventory		1,394
Other current assets		502
Property, plant and equipment		324
Intangible assets		17,400
Other noncurrent assets		171
Total identifiable assets acquired		22,684
Accounts payable and accrued expenses		(2,503)
Deferred revenues		(44)
Deferred tax liabilities		(4,558)
Total liabilities assumed		(7,105)
Net identifiable assets acquired		15,579
Goodwill		20,626
Total preliminary purchase price	36,205	36,205
SENS [Member]
Business Acquisition [Line Items]
Inventory	485
Intangible assets	1,270
Total identifiable assets acquired	1,755
Accounts payable and accrued expenses	(8)
Net identifiable assets acquired	1,747
Goodwill	231
Total preliminary purchase price	$ 1,978