STOCKHOLDERS' EQUITY: - Employee Stock Purchase Plan (Details) $ / shares in Units, $ in Millions	1 Months Ended				12 Months Ended
	Nov. 30, 2018 $ / shares	Nov. 30, 2018 $ / shares	Jan. 31, 2015 $ / shares	Jan. 31, 2015 $ / shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Peruvian Operations
Non-controlling interest
Investment shareholders' interest in Peruvian Branch (as a percent)					0.71%
Employee Stock Purchase 2015 Plan
Information related to compensation cost
Purchase price for initial subscription (in dollars per share) | (per share)			$ 38.44	$ 2.63	$ 2.63
Percentage of title acquired by employee in every two years on shares paid in previous two years					50.00%
Period of plan					8 years
Ratio of bonus shares granted to participant					0.1
Stock based compensation expense | $						$ 0.2	$ 0.6
Unrecognized compensation expense | $							$ 0.2
Stock award activity, Shares
Outstanding shares at the beginning of the period | shares					44,839	845,895
Exercised (in shares) | shares					(44,839)	(801,056)
Outstanding shares at the end of the period | shares						44,839	845,895
Unit Weighted Average Grant Date Fair Value
Outstanding shares at the beginning of the period (in dollars per share) | $ / shares					$ 2.63	$ 2.63
Exercised (in dollars per share) | $ / shares					$ 2.63	2.63
Outstanding shares at the end of the period (in dollars per share) | $ / shares						$ 2.63	$ 2.63
Employee Stock Purchase 2018 Plan
Information related to compensation cost
Purchase price for initial subscription (in dollars per share) | (per share)	$ 37.89	$ 1.86
Percentage of title acquired by employee in every two years on shares paid in previous two years					50.00%
Period of plan					8 years
Ratio of bonus shares granted to participant					0.1
Stock based compensation expense | $					$ 0.7	$ 0.7	$ 0.7
Unrecognized compensation expense | $					$ 1.0	$ 1.7	$ 2.4
Stock award activity, Shares
Outstanding shares at the beginning of the period | shares					1,962,936	2,754,506
Exercised (in shares) | shares					(61,847)	(791,570)
Outstanding shares at the end of the period | shares					1,901,089	1,962,936	2,754,506
Unit Weighted Average Grant Date Fair Value
Outstanding shares at the beginning of the period (in dollars per share) | $ / shares					$ 1.86	$ 1.86
Exercised (in dollars per share) | $ / shares					1.86	1.86
Outstanding shares at the end of the period (in dollars per share) | $ / shares					$ 1.86	$ 1.86	$ 1.86