Stock Based Compensation

6 Months Ended

Jun. 30, 2015

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

Stock Based Compensation

Stock Based Compensation — Compensation expense associated with RSUs and restricted stock was recognized based on the fair value of the instruments, over the instruments’ vesting period. The following table reflects the statements of income line items for stock based compensation expense for the periods stated:

	For the Three Months Ended June 30,					For the Six Months Ended June 30,
Operating Expense Category	2015		2014			2015		2014
	(Dollars in thousands)
Cost of revenue	$	34	$	81		$	67	$	162
Service, rental and maintenance	29		(17		)	57		22
Selling and marketing	51		131			102		262
General and administrative	548		429			878		1,264
Total stock based compensation	$	662	$	624		$	1,104	$	1,710

The decrease in stock based compensation expense during the six months ended June 30, 2015, compared to the same period in 2015, was due to the 2015 LTIP as compared to the 2011 LTIP, which fully vested on December 31, 2014. Fewer RSUs were granted under the 2015 LTIP resulting in lower stock based compensation expense in 2015.