Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Rental Commitments under Office and Equipment Leases

Future minimum rental commitments under such office and equipment leases as at December 31, 2014 are as follows.

(Expressed in thousands)
2015	$	40,807
2016	38,318
2017	33,833
2018	31,779
2019	26,302
2020 and thereafter	130,362
	$	301,401