COMMITMENTS AND CONTINGENCIES (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum rental payments for operating leases

As of December 31, 2013, future minimum lease commitments under non-cancelable operating leases, which will be expensed as direct costs (for contractor project space) and office and general expenses, were as follows:

2014	$	21,291
2015	18,989
2016	17,069
2017	12,917
2018	11,256
Thereafter	14,150
	$	95,672

Schedule of asset retirement obligations

The Company’s asset retirement obligations that are included in the Consolidated Balance Sheets as of December 31, 2013 and 2012 were as follows:

	As of December 31,
	2013		2012
Current portion of asset retirement obligations	$	6	$	52
Non-current portion of asset retirement obligations	2,527		2,769
Total asset retirement obligations	$	2,533	$	2,821