Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Estimated Useful Lives of Property and Equipment

The estimated useful lives are typically as follows:

Computer equipment and purchased software	3 years
Machinery and equipment	3-5 years
Furniture and fixtures	5 years

Advertising Expense

Advertising expense was as follows:

	Year ended December 31,
	2015		2014		2013
	(In thousands)
Advertising expense	$	265	$	344	$	322