Segment and Enterprise Wide Disclosures - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended						3 Months Ended
	Jun. 30, 2014 Segment	Mar. 31, 2014	Jun. 30, 2014 United States	Mar. 31, 2014 United States	Jun. 30, 2014 Europe	Mar. 31, 2014 Europe	Jun. 30, 2014 International	Jun. 30, 2013 International
Segment Reporting Information [Line Items]
Number of business segments	1
Percentage of total consolidated assets			65.00%	74.00%
Goodwill	$ 37,694	$ 37,990			$ 37,700	$ 35,400
Percentage of total consolidated assets, excluding goodwill					17.00%	8.00%
Percentage of total product revenue							11.00%	8.00%