Note 11 - Losses and Loss Adjustment Expense - Reserve for Losses and LAE by Segment - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	$ 825,792	$ 404,765
Mortgage insurance loss reserves
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	821,708	401,273
Title insurance loss reserves
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	4,084	3,492
First Lien Mortgage Insurance Products | Primary Case Reserves | Mortgage insurance loss reserves
Liability for Claims and Claims Adjustment Expense [Line Items]
Reserve for losses and loss adjustment expense	$ 744,600	$ 339,800