Supplemental Balance Sheet Information

12 Months Ended

Dec. 31, 2017

Disclosure Text Block Supplement [Abstract]

Supplemental Balance Sheet Information

Supplemental Balance Sheet Information

The following table shows selected balance sheet information at December 31, 2017 and 2016:

	December 31,
	2017		2016
Other assets:
Long-term investments	$	435,612	$	425,732
Other	105,184		99,041
Total	$	540,796	$	524,773
Accounts payable and accrued liabilities:
Accounts payable	$	302,101	$	293,538
Customer deposits	693,004		688,772
Employee related liabilities	260,116		205,901
Other	231,520		190,611
Total	$	1,486,741	$	1,378,822