XML 79 R66.htm IDEA: XBRL DOCUMENT
v3.20.2

Stockholders' Equity - Shareholder Rights Plan (Details) | Mar. 31, 2020 $ / shares shares | Jun. 30, 2020 $ / shares | Jun. 27, 2020 $ / shares | Dec. 31, 2019 $ / shares
--- | --- | --- | --- | ---
Equity [Abstract] |  |  |  |
Shareholder rights plan, ownership trigger threshold | 15.00% |  |  |
Right dividend declared, per share of common stock held | 1 |  |  |
Common stock, par value (in dollars per share) | $ 1.00 | $ 1 | $ 1.00 | $ 1
Number of securities called by each right (in shares) | shares | 0.5 |  |  |
Right, common stock purchase price (in USD per share) | $ 22.50 |  |  |
Right, common stock purchase price, full right equivalent (USD per share) | $ 45.00 |  |  |

X
- Definition Class Of Warrant Or Right, Exercise Price Of Warrants Or Rights, Equivalent Of Full Right + References No definition available. + Details
Name: | synl_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRightsEquivalentOfFullRight
Namespace Prefix: | synl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Stock, Dividends, Class Of Warrant Or Right + References No definition available. + Details
Name: | synl_CommonStockDividendsClassOfWarrantOrRight
Namespace Prefix: | synl_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shareholder Rights Plan, Ownership Trigger Threshold + References No definition available. + Details
Name: | synl_ShareholderRightsPlanOwnershipTriggerThreshold
Namespace Prefix: | synl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration