Quarterly report pursuant to Section 13 or 15(d)

Uncategorized Items - pirs-20190630.xml

v3.19.2
Label Element Value
Cumulative Effect of New Accounting Principle in Period of Adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption $ (1,641,000)
Retained Earnings [Member]  
Cumulative Effect of New Accounting Principle in Period of Adoption us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption $ (1,641,000)