Stock Based Compensation

12 Months Ended

Dec. 31, 2015

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

Compensation expense associated with common stock, RSUs and restricted stock was recognized based on the fair value of the instruments, over the instruments’ vesting period. Stock based compensation expense decreased by $2.0 million for the year ended December 31, 2015 from the same period in 2014 primarily due to a lower number of shares issued under the 2015 LTIP plan as compared to the 2011 LTIP plan, which resulted in lower stock based compensation expense. Stock based compensation expense for the year ended December 31, 2015 included a one-time charge of $0.3 million related to the departure of an executive. The increase in stock based compensation expense related to the Board of Directors for the year ended December 31, 2014 from the same period in 2013 reflects the compensation increase for Board of Director members effective in the third quarter of 2013.

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