Text Block Comparison: Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward [Table Text Block] (us-gaap:ScheduleOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForwardTableTextBlock)

Documentation: Tabular disclosure of the change in unrecognized tax benefits, excluding amounts pertaining to examined tax returns.

(For last 10-K submitted to SEC as of March 31, 2018)