Schedule of Investments $ in Thousands		Mar. 31, 2016 USD ($) oz	Dec. 31, 2015 USD ($) oz
Schedule of Investments [Abstract]
Investment in Platinum (oz) | oz		486,664.0	463,267.0
Cost		$ 629,783	$ 614,675
Fair Value		$ 474,984	$ 403,969
% of Net Assets		100.05%	101.10%
Less liabilities		$ (240)	$ (4,412)
Less liabilities, % of Net Assets		(0.05%)	(1.10%)
Net assets	[1]	$ 474,744	$ 399,557
Net assets, % of Net Assets		100.00%	100.00%

[1] Authorized share capital is unlimited with no par value per Share. Shares issued and outstanding at March 31, 2016 and at December 31, 2015 were 5,050,000 and 4,750,000, respectively. Net asset values per Share at March 31, 2016 and December 31, 2015 were $94.01 and $84.12, respectively.