Summary Of Business And Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

Restricted cash represents cash used to collateralize standby letters of credit which were issued to the benefit of a third party to secure a contract with the Company.

The following table summarizes the Company’s cash and cash equivalents at December 31, 2018 and 2017 (in thousands):

	December 31, 2018		December 31, 2017
Cash and cash equivalents, unrestricted	$	898,426	$	779,345
Cash and cash equivalents, restricted	333		332
Total unrestricted and restricted cash and cash equivalents	$	898,759	$	779,677

Restrictions on Cash and Cash Equivalents

Restricted cash represents cash used to collateralize standby letters of credit which were issued to the benefit of a third party to secure a contract with the Company.

The following table summarizes the Company’s cash and cash equivalents at December 31, 2018 and 2017 (in thousands):

	December 31, 2018		December 31, 2017
Cash and cash equivalents, unrestricted	$	898,426	$	779,345
Cash and cash equivalents, restricted	333		332
Total unrestricted and restricted cash and cash equivalents	$	898,759	$	779,677