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Summary of Operations and Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]  
Summary of Allowance for Doubtful Accounts

Our allowance for doubtful accounts activity is summarized as follows (in thousands):

 

 

 

2021

 

 

2020

 

 

2019

 

Balance at January 1,

 

 

 

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts

 

$

757

 

 

$

888

 

 

$

533

 

Charges to expense

 

 

193

 

 

 

125

 

 

 

459

 

Write-offs of uncollectible accounts, net

   of recoveries

 

 

(490

)

 

 

(256

)

 

 

(104

)

Balance at December 31,

 

 

 

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts

 

$

460

 

 

$

757

 

 

$

888

 

Summary of Property, Equipment and Software Over Estimated Useful Life

Depreciation of property and equipment and amortization of software is calculated using the straight-line method over estimated useful lives of the related assets or lease terms, as follows:

 

 

 

Years

Buildings

 

39

Office furniture and fixtures

 

7

Computer hardware, software and software development costs

 

3 - 10

Leasehold improvements

 

1 - 7

Schedule of Reconciles of Cash, Cash Equivalents and Restricted Cash Balances The table below reconciles the cash, cash equivalents and restricted cash balances from our consolidated balance sheets to the amounts reported on the consolidated statements of cash flows (in thousands):

 

 

 

December 31,

 

 

December 31,

 

 

December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

Cash and cash equivalents

 

$

69,405

 

 

$

68,688

 

 

$

44,570

 

Restricted cash, included in restricted cash and investments

 

 

9,224

 

 

 

165,149

 

 

 

228,771

 

Total cash, cash equivalents and restricted cash shown in the

   statement of cash flows

 

$

78,629

 

 

$

233,837

 

 

$

273,341

 

 

Summary of Basic and Diluted Common Shares Outstanding Basic and diluted shares outstanding are summarized as follows (in thousands):

 

 

 

Year Ended

 

 

 

December 31,

 

 

 

2021

 

 

2020

 

 

2019

 

Weighted average number of basic shares outstanding

 

 

7,540

 

 

 

7,577

 

 

 

7,451

 

Effect of dilutive securities

 

 

81

 

 

 

111

 

 

 

248

 

Weighted average number of diluted shares outstanding

 

 

7,621

 

 

 

7,688

 

 

 

7,699