Helios Technologies Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments (Details)

Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Assets
Assets measured at fair value, Adjusted cost	$ 44,713
Asset measured at, fair value	43,353us-gaap_AvailableForSaleSecurities
Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	44,713	38,917
Assets measured at fair value, Unrealized gains	73	284
Assets measured at fair value, Unrealized losses	(1,433)	(472)
Asset measured at, fair value	43,353	38,729
Level 1 [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	5,251	5,914
Assets measured at fair value, Unrealized gains	67	156
Assets measured at fair value, Unrealized losses	(509)	(65)
Asset measured at, fair value	4,809	6,005
Liabilities
Liabilities measured at fair value, Adjusted cost		38
Liabilities measured at fair value, Unrealized gains	0	0
Liabilities measured at fair value, Unrealized losses	0	0
Liabilities measured at fair value	30	38
Convertible Debt, Fair Value Disclosures	30
Level 1 [Member] \| Phantom stock units [Member] \| Recurring [Member]
Liabilities
Liabilities measured at fair value, Adjusted cost	30	38
Liabilities measured at fair value, Unrealized gains	0	0
Liabilities measured at fair value, Unrealized losses	0	0
Liabilities measured at fair value	30	38
Level 1 [Member] \| Equity securities [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	2,145	2,049
Assets measured at fair value, Unrealized gains	65	137
Assets measured at fair value, Unrealized losses	(282)	(64)
Asset measured at, fair value	1,928	2,122
Level 1 [Member] \| Mutual funds [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	3,106	3,865
Assets measured at fair value, Unrealized gains	2	19
Assets measured at fair value, Unrealized losses	(227)	(1)
Asset measured at, fair value	2,881	3,883
Level 2 [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	39,462	33,003
Assets measured at fair value, Unrealized gains	6	128
Assets measured at fair value, Unrealized losses	(924)	(407)
Asset measured at, fair value	38,544	32,724
Level 2 [Member] \| Corporate fixed income [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	33,740	25,240
Assets measured at fair value, Unrealized gains	6	126
Assets measured at fair value, Unrealized losses	(868)	(250)
Asset measured at, fair value	32,878	25,116
Level 2 [Member] \| Municipal bonds [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	2,441	2,775
Assets measured at fair value, Unrealized gains	0	1
Assets measured at fair value, Unrealized losses	(33)	(28)
Asset measured at, fair value	2,408	2,748
Level 2 [Member] \| Certificates of deposit [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	2,439	4,014
Assets measured at fair value, Unrealized gains	0	1
Assets measured at fair value, Unrealized losses	0	0
Asset measured at, fair value	2,439	4,015
Level 2 [Member] \| Asset backed securities [Member] \| Recurring [Member]
Assets
Assets measured at fair value, Adjusted cost	842	974
Assets measured at fair value, Unrealized gains	0	0
Assets measured at fair value, Unrealized losses	(23)	(129)
Asset measured at, fair value	$ 819	$ 845