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Basis of Presentation, Summary of Significant Accounting Policies and Change in Accounting Principle (Tables)
12 Months Ended
Dec. 31, 2019
Accounting Policies [Abstract]  
Schedule of restricted cash and cash equivalents
Restricted cash and restricted investments include cash and investments used to collateralize various contractual obligations (in thousands) as follows:

 
As of December 31,
 
2019
 
2018
Collateral for letters of credit for facility leases (1)
$
3,610

 
$
3,710

Collateral with financial institutions (2)
5,742

 
34,142

Claims processing services (3)
18,171

 
122,439

Other
817

 
532

Total restricted cash and restricted investments
$
28,340

 
$
160,823

 
 
 
 
Current restricted investments
$
704

 
$
211

Current restricted cash
19,376

 
154,507

Total current restricted cash and restricted investments
$
20,080

 
$
154,718

 
 
 
 
Non-current restricted investments
$
113

 
$
607

Non-current restricted cash
8,147

 
5,498

Total non-current restricted cash and restricted investments
$
8,260

 
$
6,105


(1) Represents restricted cash related to collateral for letters of credit required in conjunction with lease agreements. See Note 10 for further discussion of our lease commitments.
(2) Represents collateral held with financial institutions for risk-sharing and other arrangements. As of December 31, 2019 and 2018, approximately $1.0 million and $31.2 million of the collateral amount was held in a trust account and invested in money market funds related to risk-sharing arrangements. The amounts invested in money market funds are considered restricted cash and are carried at fair value, which approximates cost. See Note 17 for discussion of fair value measurement and Note 9 for discussion of our risk-sharing arrangements. As of December 31, 2019 and 2018, approximately $4.7 million and $2.9 million, of the collateral amounts were held in a FDIC participating bank account.
(3) Represents cash held by the Company related to claims processing services on behalf of partners. These are pass-through amounts and can fluctuate materially from period to period depending on the timing of when the claims are processed.

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same amounts shown in the statements of cash flows.
 
As of December 31,
 
2019
 
2018
Cash and cash equivalents
$
101,008

 
$
228,320

Restricted cash and restricted investments
28,340

 
160,823

Restricted investments included in restricted cash and restricted investments
(817
)
 
(818
)
Total cash and cash equivalents and restricted cash shown in the consolidated statements of cash flows
$
128,531

 
$
388,325


Summary of property and equipment The following summarizes the estimated useful lives by asset classification:

Computer hardware
3 years
Computer software
1 year
Furniture and equipment
3-7 years
Internal-use software development costs
5 years
Leasehold improvements
Shorter of useful life or remaining lease term


The following summarizes our property and equipment (in thousands):

 
As of December 31,
  
2019
 
2018
Computer hardware
$
11,604

 
$
10,421

Furniture and equipment
3,649

 
3,187

Internal-use software development costs
112,501

 
81,640

Leasehold improvements
12,415

 
10,118

Total property and equipment
140,169

 
105,366

Accumulated depreciation and amortization expenses
(55,014
)
 
(31,738
)
Total property and equipment, net
$
85,155

 
$
73,628



Schedule of intangible assets
The following summarizes the estimated useful lives by asset classification:

Corporate trade name
10-20 years
Customer relationships
10-25 years
Technology
5 years
Provider network contracts
5 years

Details of our intangible assets (in thousands) are presented below:

 
As of December 31, 2019
 
As of December 31, 2018
  
Weighted- Average Remaining Useful Life
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Value
 
Weighted- Average Remaining Useful Life
 
Gross Carrying Amount
 
Accumulated Amortization
 
Net Carrying Value
Corporate trade name
14.2
 
$
23,300

 
$
4,891

 
$
18,409

 
15.2
 
$
23,300

 
$
3,511

 
$
19,789

Customer relationships
16.8
 
291,519

 
44,750

 
246,769

 
18.1
 
281,219

 
29,184

 
252,035

Technology
2.0
 
82,922

 
49,760

 
33,162

 
3.0
 
82,922

 
31,764

 
51,158

Below market lease, net
2.2
 
2,048

 
1,334

 
714

 
4.0
 
4,097

 
3,003

 
1,094

Provider network contracts
3.7
 
12,725

 
3,320

 
9,405

 
4.6
 
11,900

 
940

 
10,960

Total intangible assets, net
 
 
$
412,514

 
$
104,055

 
$
308,459

 
 
 
$
403,438

 
$
68,402

 
$
335,036