GOODWILL AND INTANGIBLE ASSETS: (Tables)

12 Months Ended

Dec. 31, 2015

GOODWILL AND INTANGIBLE ASSETS:

Schedule of changes in carrying amount of trademarks

	2015		2014
Original cost	$	193,767	$	193,767
Accumulated impairment losses as of January 1		(18,743)		(18,743)
Balance at January 1	$	175,024	$	175,024
Current year impairment losses		—		—
Balance at December 31	$	175,024	$	175,024
Accumulated impairment losses as of December 31	$	(18,743)	$	(18,743)