Note 7 - Revenues (Details) - Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01 T in Millions	Jun. 30, 2019 T
Fixed Priced Contracts
REVENUES
Revenue, Remaining Performance Obligation, Mass	0.8
Contracts with Indexed Based Pricing Mechanisms
REVENUES
Revenue, Remaining Performance Obligation, Mass	0.1

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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