Note 11 - Losses and LAE Concentration of Risk (Details) - CALIFORNIA - Mortgage Insurance Segment - Geographic Concentration Risk	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Primary Risk In Force
Concentration Risk, Percentage	11.20%	12.30%
New Insurance Written
Concentration Risk, Percentage	10.60%	11.90%	14.10%
Minimum \| Primary Risk In Force
Concentration Risk, Percentage	10.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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