Note 13 - Commitments and Contingencies Legal Proceedings (Details) - matter	1 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2016
Loss Contingencies [Line Items]
Minimum Number of Pending or Threatened Matters That Could Effect Our Results		1
Settlement Agreement, Number of Years Entity Has Agreed Not to Enter Into Captive Insurance Arrangements	10 years
Insurance Claims [Member] | Total Primary Insurance Mortgage Insurance Products [Member] | Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Legal Actions Commencement, Period		2 years
Insurance Claims [Member] | Pool Insurance Mortgage Insurance Product [Member] | Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Legal Actions Commencement, Period		3 years