Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Based Compensation Expense

The following table reflects the statement of income line items for stock based compensation expense for the periods stated:

Operating Expense Category	For the Year Ended December 31,
(Dollars in thousands)	2016		2015		2014
Cost of revenue (LTIP)	$	56	$	134	$	351
Research and development (LTIP)	52		86		90
Service, rental and maintenance (LTIP)	13		29		18
Selling and marketing (LTIP)	67		111		544
General and administrative (LTIP)	225		1,138		2,498
General and administrative (ESPP)	23		—		—
General and administrative (Board of Directors Restricted Stock)	418		370		337
Total stock based compensation	$	854	$	1,868	$	3,838