XML 37 R25.htm IDEA: XBRL DOCUMENT

Summary of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

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):

	2019			2018		2017
Balance at January 1,
Allowance for doubtful accounts	$	533		$	265	$	78
Charges to expense		459			268		192
Write-offs of uncollectible accounts, net of recoveries		(104	)		—		(5	)
Balance at December 31,
Allowance for doubtful accounts	$	888		$	533	$	265

Property Plant And Equipment Estimated Useful Life Table Text Block

Depreciation of property, equipment and 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 and software		3-10
Leasehold improvements		Shorter of lease term or estimated useful life

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,
	2019		2018		2017
Cash and cash equivalents	$	44,570	$	35,371	$	59,835
Restricted cash, included in restricted cash and investments		228,771		105,331		60,370
Total cash, cash equivalents and restricted cash shown in the statement of cash flows	$	273,341	$	140,702	$	120,205

Summary of Basic and Diluted Common Shares Outstanding

Basic and diluted shares outstanding are summarized as follows (in thousands):

	Year Ended
	December 31,
	2019		2018		2017
Weighted average number of basic shares outstanding		7,451		7,342		7,275
Effect of dilutive securities		248		305		276
Weighted average number of diluted shares outstanding		7,699		7,647		7,551