Derivatives (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015		Dec. 31, 2014
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	$ 2,461	$ (2,869)		$ (3,185)
Derivative Assets, Notional Amount	20,377	6,323
Derivative Assets, Fair Value	1,760	300
Derivative Liabilities, Notional Amount	4,825	22,292
Derivative Liabilities, Fair Value	266	644
Foreign exchange contracts
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	1,626	(702)		95
Derivative Assets, Notional Amount	13,839	2,361
Derivative Assets, Fair Value	1,417	10
Derivative Liabilities, Notional Amount	0	14,955
Derivative Liabilities, Fair Value	0	219
Commodity contracts
Derivative [Line Items]
Derivative, Gain (Loss) on Derivative, Net	835	(2,167)		$ (3,280)
Derivative Assets, Notional Amount	6,538	3,962
Derivative Assets, Fair Value	343	290
Derivative Liabilities, Notional Amount	4,825	7,337
Derivative Liabilities, Fair Value	266	425
Due from broker
Derivative [Line Items]
Cash Collateral for Borrowed Securities		192
Trading investments pledged as collateral
Derivative [Line Items]
Securities owned and held as collateral	$ 487	$ 566	[1]

[1] Pledged as collateral attributable to the consolidated balances of Cohen & Steers Active Commodities Strategy Fund, Inc. as of December 31, 2016 and December 31, 2015, respectively.