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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2017
Share-based Compensation [Abstract]  
Schedule of share-based payment award, stock options, valuation assumptions
The weighted average assumptions utilized to determine the fair value of options granted during the nine months ended September 30, 2017 and 2016 were as follows:

 
 
 
 
 
Nine Months Ended
September 30,
 
2017
 
2016
Risk-free interest rate
1.96
%
 
1.43
%
Expected volatility
35.53
%
 
38.22
%
Expected life (in years)
4.22

 
4.17

Dividend yield
0
%
 
0
%
Schedule of Share-based Compensation, Activity
The following table presents stock-based compensation expense, including expense for the ESPP, in the Company's consolidated statements of operations for the three and nine months ended September 30, 2017 and 2016:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2017
 
2016
 
2017
 
2016
Cost of product sales
$
68

 
$
77

 
$
222

 
$
242

Cost of service sales
—

 
—

 
1

 
1

Research and development
155

 
168

 
514

 
520

Sales, marketing and support
190

 
263

 
679

 
787

General and administrative
396

 
403

 
1,205

 
1,242

 
$
809

 
$
911

 
$
2,621

 
$
2,792
Schedule of Accumulated Other Comprehensive Income (Loss)

 
Foreign Currency Translation
 
Unrealized Gain (Loss) on Available for Sale Marketable Securities
 
Interest Rate Swaps
 
Total Accumulated Other Comprehensive Loss
Balance, June 30, 2016
$
(12,511
)
 
$
1

 
$
(249
)
 
$
(12,759
)
Other comprehensive (loss) income before reclassifications
(2,238
)
 
—

 
11

 
(2,227
)
Amounts reclassified from AOCI to Other income, net
—

 
—

 
26

 
26

Net other comprehensive (loss) income, September 30, 2016
(2,238
)
 
—

 
37

 
(2,201
)
Balance, September 30, 2016
$
(14,749
)
 
$
1

 
$
(212
)
 
$
(14,960
)
For additional information, see Note 4, "Marketable Securities." and Note 17, "Derivative Instruments and Hedging Activities."

The balances for the nine months ended September 30, 2017 and 2016 are as follows:

 
Foreign Currency Translation
 
Unrealized Gain (Loss) on Available for Sale Marketable Securities
 
Interest Rate Swaps
 
Total Accumulated Other Comprehensive Loss
Balance, December 31, 2016
$
(16,651
)
 
$
—

 
$
(158
)
 
$
(16,809
)
Other comprehensive income (loss) before reclassifications
4,997

 
(1
)
 
5

 
5,001

Amounts reclassified from AOCI to Other income, net 
—

 
—

 
59

 
59

Net other comprehensive income (loss), September 30, 2017
4,997

 
(1
)
 
64

 
5,060

Balance, September 30, 2017
$
(11,654
)
 
$
(1
)
 
$
(94
)
 
$
(11,749
)
 
 
Foreign Currency Translation
 
Unrealized Gain (Loss) on Available for Sale Marketable Securities
 
Interest Rate Swaps
 
Total Accumulated Other Comprehensive Loss
Balance, December 31, 2015
$
(7,363
)
 
$
1

 
$
(238
)
 
$
(7,600
)
Other comprehensive loss before reclassifications
(7,386
)
 
—

 
(50
)
 
(7,436
)
Amounts reclassified from AOCI to Other income, net 
—

 
—

 
76

 
76

Net other comprehensive (loss) income, September 30, 2016
(7,386
)
 
—

 
26

 
(7,360
)
Balance, September 30, 2016
$
(14,749
)
 
$
1

 
$
(212
)
 
$
(14,960
)
For additional information, see Note 4, "Marketable Securities."