CASH AND CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2011

CASH AND CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

Schedule of cash and cash equivalents

	December 31,
	2010		2011
Cash and cash equivalents:
Russian ruble bank accounts	$	51,192	$	6,434
US dollar bank accounts	$	7,286	$	4,479
Other	$	1,087	$	1,418
Total cash and cash equivalents	$	59,565	$	12,331

Schedule of short-term investments

	December 31,
	2010			2011
	Annual interest rate	Amount		Annual interest rate	Amount
Short-term investments:
Ruble-denominated deposits	3.7%—6.5%	$	79,879	4.1%—8.7%	$	102,068
US dollar-denominated deposits	1.9%—3.0%		37,578	2.1%—2.2%		15,165
Total Short-term investments		$	117,457		$	117,233