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Balance Sheet Account Detail
12 Months Ended
Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]  
Balance Sheet Account Detail
Balance Sheet Account Detail
(a) Property and Equipment
Property and equipment consisted of the following:
 
December 31,
 
2019
 
2018
Production equipment, molds and office furniture
$
10,844

 
$
11,854

Computer hardware and software
7,897

 
8,235

Leasehold improvements
15,594

 
15,535

Construction in progress (software and related implementation, production equipment and leasehold improvements)
795

 
993

Property and equipment, at cost
35,130

 
36,617

Accumulated depreciation
(21,978
)
 
(20,584
)
Property and equipment, net
$
13,152

 
$
16,033


Depreciation expense for property and equipment for the years ended December 31, 2019, 2018 and 2017 was $3.3 million, $3.7 million, and $5.0 million, respectively.

(b) Inventories
Inventories consisted of the following:

December 31,

2019

2018
Raw materials
$
5,362

 
$
4,636

Work-in-process
4,132

 
6,401

Finished goods
16,911

 
19,362

Total Inventories
$
26,405

 
$
30,399


(c) Goodwill and Other Intangible Assets
The change in the carrying amount of goodwill for the year ended December 31, 2019 was as follows:
Balance at December 31, 2018
$
120,848

Foreign currency translation adjustment
(34
)
Balance at December 31, 2019
120,814


Other intangible assets consisted of the following:
 
 
 
December 31, 2019
 
December 31, 2018
 
Estimated Useful Life
(in years)
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Amount
Indefinite-lived intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Trademarks and trade names
N/A
 
$
2,708

 
N/A
 
$
2,708

 
$
2,708

 
N/A
 
$
2,708

In-process research and development
N/A
 
11,200

 
N/A
 
11,200

 
11,200

 
N/A
 
11,200

Total indefinite-lived intangible assets
 
 
13,908

 

 
13,908

 
13,908

 
 
 
13,908

Finite-lived intangible assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Developed technology
11-24
 
67,600

 
$
(13,467
)
 
54,133

 
67,600

 
$
(10,657
)
 
56,943

Customer relationships
10
 
7,500

 
(2,938
)
 
4,562

 
7,500

 
(2,188
)
 
5,312

Total finite-lived intangible assets
 
 
75,100

 
(16,405
)
 
58,695

 
75,100

 
(12,845
)
 
62,255

Other intangible assets, net
 
 
$
89,008

 
$
(16,405
)
 
$
72,603

 
$
89,008

 
$
(12,845
)
 
$
76,163


Amortization expense for intangible assets for the years ended December 31, 2019, 2018 and 2017 was $3.6 million, $4.2 million and $4.1 million, respectively.
Estimated amortization expense for the 5 succeeding years and thereafter is as follows:
2020
$
3,185

2021
3,276

2022
3,319

2023
3,378

2024
3,497

Thereafter
42,040

Total
$
58,695



(d) Fair Value Measurements
The following fair value hierarchy table presents information about each major category of the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2019 and 2018:
 
 
December 31, 2019
 
December 31, 2018
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
Financial liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Contingently issuable common stock
(a)
$

 
$

 
$
500

 
$
500

 
$

 
$

 
$
2,200

 
$
2,200

Derivative liabilities
(b)

 

 
940

 
940

 

 

 
4,012

 
4,012

Total financial liabilities
 
$

 
$

 
$
1,440

 
$
1,440

 
$

 
$

 
$
6,212

 
$
6,212


(a)
Included in other liabilities in the Consolidated Balance Sheets. See Note 9 for additional details.
(b)
See Note 6 for additional details.
Changes in the fair value of the Company’s Level 3 liabilities were as follows:
 
Contingently issuable common stock
(a)
 
Derivative liabilities
(b)
Balance at December 31, 2018
$
2,200

 
$
4,012

Additions

 
14,641

Fair value adjustment
(1,700
)
 
(17,713
)
Balance at December 31, 2019
$
500

 
$
940

(a)
See Note 9 for additional details.
(b)
See Note 6 for additional details.
There were no transfers of financial assets or liabilities into or out of Level 3 in the years ended December 31, 2018 and 2017.
Financial Instruments Not Recorded at Fair Value on a Recurring Basis
The table below summarizes the carrying and fair values of the Company’s long-term debt:
 
December 31, 2019
 
December 31, 2018
 
Carrying value
 
Fair value
 
Carrying value
 
Fair value
Term loan facility
$
141,273

 
$
131,892

 
$
117,880

 
$
116,916

Convertible notes
26,506

 
24,548

 
75,917

 
50,489

Other debt
4,281

 
1,416

 
4,281

 
1,221

 
$
172,060

 
$
157,856

 
$
198,078

 
$
168,626


The fair values of the Company’s long-term debt are determined using Level 3 inputs, with the exception of the 3.25% Senior Notes, which are determined using Level 2 inputs. See Note 6 for further details. The carrying value of the Company’s Revolving loan facility approximates fair value.