Stock Based Compensation

12 Months Ended

Dec. 31, 2016

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 $1.0 million for the year ended December 31, 2016 from the same period in 2015 primarily due to a one-time reversal of $2.0 million in stock compensation expense related to the 2015 and 2016 awards issued under the 2015 LTIP partially offset by the issuance and amortization of the 2016 grants under the 2015 LTIP. As of December 31, 2016 we do not currently believe it is probable that 50% of the awards issued in 2015 and 2016 will vest based on the related performance criteria and our assessment of the anticipated future performance applied to the performance criteria. The remaining 50% of awards expected to vest will continue to be expensed accordingly over the remaining applicable service periods. 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 for the 2015 grant 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 also included a one-time charge of $0.3 million related to the departure of an executive.

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

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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