CASH AND CASH EQUIVALENTS AND SHORTTERM INVESTMENTS; RECEIVABLE FROM UTH AND OTHER NONCURRENT ASSETS (Tables)

12 Months Ended

Dec. 31, 2015

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

Schedule of cash and cash equivalents

	December 31,
	2014		2015
Cash and cash equivalents:
Russian ruble bank accounts	$	1,065	$	97
US dollar bank accounts		5,061		209,690
Other		10		—
Total cash and cash equivalents	$	6,136	$	209,787

Schedule of short-term investments

Short-term investments:
Ruble-denominated deposits	$	—	$	—
U.S. dollar-denominated deposits	$	26,000	$	—
Total short-term investments	$	26,000	$	—