Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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:

	For the Year Ended December 31,
Operating Expense Category	2015		2014		2013
	(Dollars in thousands)
Cost of revenue	$	134	$	351	$	236
Service, rental and maintenance	115		108		131
Selling and marketing	111		544		336
General and administrative	1,508		2,835		2,342
Total stock based compensation	$	1,868	$	3,838	$	3,045