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Commitments and Contingencies - Litigation (Details) - USD ($)	Sep. 27, 2016	Dec. 31, 2017	Dec. 31, 2016
Loss Contingencies [Line Items]
Loss contingency accrual		$ 0	$ 2,355,000
DePinto vs John S Stafford Litigation Case
Loss Contingencies [Line Items]
Paid legal award	$ 2,375,000
Amount paid not covered by insurance	$ 0

X

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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- Definition

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+ References

No definition available.

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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- Definition

The amount paid relating to a litigation settlement that is not covered by insurance.

+ References

No definition available.

+ Details

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