Interim Consolidated Financial Statements (Tables)

6 Months Ended

Jun. 30, 2019

Accounting Policies [Abstract]

Summary of End-of-period Cash and Cash Equivalents and Cash, Cash Equivalents and Restricted Cash from Financial Statements

The following table summarizes the end-of-period cash and cash equivalents from the Company's Consolidated Balance Sheets and the total cash, cash equivalents and restricted cash as presented in the accompanying Consolidated Statements of Cash Flows (in thousands).

	Six Months Ended June 30,
	2019		2018
Cash and cash equivalents	$	69,762	$	92,997
Restricted cash classified in (1):
Prepaid expenses and other current assets		203		—
Other assets		1,147		—
Cash, cash equivalents and restricted cash shown in statement of cash flows	$	71,112	$	92,997

(1) Restricted cash consists of collateral required primarily for letters of credit. The short-term or long-term classification is determined in accordance with the expiration of the underlying lease as the letters of credit are non-cancellable while the leases are in effect.

Summary of Components of Lease Expense

The components of lease expense were as follows (in thousands):

	Three Months Ended		Six Months Ended
	June 30, 2019		June 30, 2019
Operating lease cost	$	3,727	$	7,296
Short-term lease cost		85		340
Variable lease cost		1,335		2,569
Total lease cost	$	5,147	$	10,205

Summary of Additional Lease Information

Additional lease information is summarized in the following table (in thousands, except lease term and discount rate):

	Six Months Ended
	June 30, 2019
Cash paid for amounts included in the measurement    of operating lease liabilities	$	7,762
Operating right-of-use assets obtained in exchange for lease    obligations	$	16,626
Weighted-average remaining lease term - operating leases (years)		6.7
Weighted-average discount rate - operating leases		5.1	%

Summary of Future Minimum Lease Payments Under Non-Cancellable Leases

Future minimum lease payments under non-cancellable leases as of June 30, 2019 are as follows (in thousands):

2019	$	6,155
2020		16,410
2021		13,995
2022		13,049
2023		12,728
Thereafter		35,580
Total lease payments		97,917
Less imputed interest		(15,773	)
Present value of lease liabilities	$	82,144

Summary of Lease Balances

Lease balances as of June 30, 2019 are as follows (in thousands):

Operating lease right-of-use assets	$	73,167
Short-term operating lease liabilities (1)	$	17,326
Non-current operating lease liabilities		64,818
Total operating lease liabilities	$	82,144

(1) Included in accrued expenses and other current liabilities

Future Contractual Obligations for Operating Leases

Under prior GAAP, as of December 31, 2018, the Company’s future contractual obligations for operating leases were as follows (in thousands):

2019	$	12,498
2020		11,762
2021		10,145
2022		8,552
2023		7,856
Thereafter		22,222
Total minimum lease payments	$	73,035