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SUBSEQUENT EVENTS (Details) (Non Employee Director [Member], Subsequent Event [Member], USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended
	Apr. 25, 2013
Non Employee Director [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Treasury stock issued to each nonemployee director (shares)	9,411
Annual cash retainer fees	$ 128

X

- Definition

Annual cash retainer fee paid to each non-employee member of the Board of Directors.

+ References

No definition available.

+ Details

Name:	synl_AnnualCashRetainerFees
Namespace Prefix:	synl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Treasury stock issued to each non-employee director (in shares)

+ References

No definition available.

+ Details

Name:	synl_TreasuryStockIssuedToEachNonemployeeDirector
Namespace Prefix:	synl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration