Annual report pursuant to Section 13 and 15(d)

Uncategorized Items - prph-20221231.htm

v3.23.1
Label Element Value
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01  
Revenue, Remaining Performance Obligation, Amount us-gaap_RevenueRemainingPerformanceObligation $ 375,000
Revenue, Remaining Performance Obligation, Amount us-gaap_RevenueRemainingPerformanceObligation 376,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01  
Revenue, Remaining Performance Obligation, Amount us-gaap_RevenueRemainingPerformanceObligation 2,034,000
Revenue, Remaining Performance Obligation, Amount us-gaap_RevenueRemainingPerformanceObligation 2,499,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01  
Revenue, Remaining Performance Obligation, Amount us-gaap_RevenueRemainingPerformanceObligation 530,000
Revenue, Remaining Performance Obligation, Amount us-gaap_RevenueRemainingPerformanceObligation $ 683,000