CASH AND CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS; OTHER NON-CURRENT ASSETS (Tables)

6 Months Ended

Jun. 30, 2015

CASH AND CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS; OTHER NON-CURRENT ASSETS

Schedule of cash and cash equivalents

	December 31, 2014		June 30, 2015
Cash and cash equivalents:
Russian ruble bank accounts	$	30,672	$	29,090
U.S. dollar bank accounts		5,861		21,629
Other		1,303		3,054
Total cash and cash equivalents	$	37,836	$	53,773

Schedule of short-term investments

	December 31, 2014
				June 30, 2015
	Annual interest rate
		Amount		Annual interest rate	Amount
Short-term investments:
Ruble-denominated deposits		$	—	11.48% - 15%	$	15,309
U.S. dollar-denominated deposits	0.55% - 3.9%	$	103,800	1.54% - 4.44%	$	35,390
Total short-term investments		$	103,800		$	50,699