Segment Reporting - Schedule of Business Segment Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 38,211	$ 42,854
Product Sales and Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	29,215	26,041
Technology Licensing [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	499	523
Technology Development [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	363	1,629
Shared Services [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	597	836
Unallocated Assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 7,537	$ 13,825