Fixed Assets and Leasehold Improvements (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of Fixed Assets and Leasehold Improvements

Fixed assets and leasehold improvements comprise the following (in thousands):

	Depreciation	December 31, 2016			December 31, 2015
	Period
Computer hardware and software	3 years	$	260,647		$	253,113
Leasehold improvements	*	153,899			108,173
Telephone systems and equipment	5 years	4,158			3,651
Furniture and fixtures	7 years	17,036			12,216
		435,740			377,153
Less - Accumulated depreciation and amortization		(284,095		)	(282,295		)
		$	151,645		$	94,858

*Shorter of life of lease or useful life of assets