XML 38 R20.htm IDEA: XBRL DOCUMENT

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In October 2018, ProAssurance entered into an agreement with a company to provide data analytics services for certain product lines within the Company's HCPL book of business. The agreement contains a minimum two year commitment with optional extension features for an annual fee of approximately $5 million per year with additional variable quarterly incentive fees based on service utilization metrics prescribed in the contract.