ACCRUED LIABILITIES

12 Months Ended

Dec. 31, 2013

ACCRUED LIABILITIES

ACCRUED LIABILITIES

12.   ACCRUED LIABILITIES

        As of December 31, 2012 and 2013, the Company's accrued liabilities comprised the following:

	December 31,
	2012		2013
Accrued liabilities consist of:
Bonuses and accrued unused vacation	$	6,928	$	6,066
Accrued equity-based awards		3,876		3,652
Accrued lease payments		1,740		2,801
Tax contingencies and accruals for unrecognized income tax benefits		2,588		2,349
Auditing and consulting services		2,531		1,066
Other accrued liabilities		5,782		4,515
Total accrued liabilities	$	23,445	$	20,449