Note 11 - Losses and LAE - Reserve for Losses and LAE by Segment - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	$ 893,155	$ 848,413
Mortgage insurance loss reserves
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	888,021	844,107
Title insurance loss reserves
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	5,134	4,306
First Lien Mortgage Insurance Products | Mortgage insurance loss reserves | Primary Case Reserves
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	$ 851,200	$ 799,500