Segment and Enterprise-Wide Disclosures (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Net Sales to Unaffiliated Customers by Geography

 Net sales to unaffiliated customers by country were as follows:

	Three months ended
	March 31,
	2014		2013
	(in thousands)
United States	$	10,001	$	9,735
Germany		1,880		1,559
Japan		556		559
Other countries		4,317		3,529
Net Sales	$	16,754	$	15,382