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Stockholder's Equity (Tables)
 9 Months Ended
Sep. 30, 2019
Share-based Payment Arrangement, Noncash Expense [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, 2019 and 2018 were as follows:
 
 
 
 
 
Nine Months Ended
September 30,
 
2019
 
2018
Risk-free interest rate
1.91
%
 
2.81
%
Expected volatility
36.94
%
 
36.60
%
Expected life (in years)
4.27

 
4.29

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, 2019 and 2018:
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2019
 
2018
 
2019
 
2018
Cost of product sales
$
69

 
$
40

 
$
171

 
$
122

Research and development
221

 
177

 
589

 
496

Sales, marketing and support
226

 
138

 
620

 
485

General and administrative
596

 
505

 
1,639

 
1,349

 
$
1,112

 
$
860

 
$
3,019

 
$
2,452
Schedule of accumulated other comprehensive income (loss)
The balances for the three months ended September 30, 2019 and 2018 are as follows:
 
Foreign Currency Translation
 
Unrealized Gain (Loss) on Available for Sale Marketable Securities
 
Interest Rate Swaps
 
Total Accumulated Other Comprehensive Loss
Balance, June 30, 2019
$
(3,489
)
 
$
—

 
$
—

 
$
(3,489
)
Other comprehensive loss before reclassifications
(1,109
)
 
—

 
—

 
(1,109
)
Reclassified from AOCI
—

 
—

 
—

 
—

Net other comprehensive loss, September 30, 2019
(1,109
)
 
—

 
—

 
(1,109
)
Balance, September 30, 2019
$
(4,598
)
 
$
—

 
$
—

 
$
(4,598
)

 
Foreign Currency Translation
 
Unrealized Gain (Loss) on Available for Sale Marketable Securities
 
Interest Rate Swaps
 
Total Accumulated Other Comprehensive Loss
Balance, June 30, 2018
$
(12,669
)
 
$
—

 
$
(32
)
 
$
(12,701
)
Other comprehensive loss before reclassifications
(763
)
 
—

 
—

 
(763
)
Reclassified from AOCI
—

 
—

 
12

 
12

Net other comprehensive (loss) income, September 30, 2018
(763
)
 
—

 
12

 
(751
)
Balance, September 30, 2018
$
(13,432
)
 
$
—

 
$
(20
)
 
$
(13,452
)

The balances for the nine months ended September 30, 2019 and 2018 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, 2018
$
(14,720
)
 
$
—

 
$
(11
)
 
$
(14,731
)
Other comprehensive (loss) income before reclassifications
(1,361
)
 
—

 
3

 
(1,358
)
Reclassified from AOCI
11,483

 
—

 
8

 
11,491

Net other comprehensive income, September 30, 2019
10,122

 
—

 
11

 
10,133

Balance, September 30, 2019
$
(4,598
)
 
$
—

 
$
—

 
$
(4,598
)
 
 
Foreign Currency Translation
 
Unrealized (Loss) Gain on Available for Sale Marketable Securities
 
Interest Rate Swaps
 
Total Accumulated Other Comprehensive Loss
Balance, December 31, 2017
$
(11,247
)
 
$
(1
)
 
$
(69
)
 
$
(11,317
)
Other comprehensive (loss) income before reclassifications
(2,185
)
 
1

 
11

 
(2,173
)
Reclassified from AOCI
—

 
—

 
38

 
38

Net other comprehensive (loss) income, September 30, 2018
(2,185
)
 
1

 
49

 
(2,135
)
Balance, September 30, 2018
$
(13,432
)
 
$
—

 
$
(20
)
 
$
(13,452
)