Name:	pfbi_ShareBasedCompensationArrangementFairValueAssumptionsExpectedDividendRate
Namespace Prefix:	pfbi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	pfbi_ShareBasedCompensationArrangementFairValueAssumptionsExpectedTerm
Namespace Prefix:	pfbi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

No definition available.

Name:	pfbi_ShareBasedCompensationArrangementFairValueAssumptionsExpectedVolatilityRate
Namespace Prefix:	pfbi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The risk-free interest rate assumption that is used in valuing an option on its own shares.

No definition available.

Name:	pfbi_ShareBasedCompensationArrangementFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	pfbi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

No definition available.