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Note 7 - Reinsurance (Tables) | 6 Months Ended
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Jun. 30, 2018
Reinsurance Disclosures [Abstract] |
Reinsurance, Premiums Written And Earned [Table Text Block] | The effect of reinsurance on our mortgage insurance net premiums written and earned is as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In thousands) | 2018 |  | 2017 |  | 2018 |  | 2017
Net premiums written—insurance: |  |  |  |  |  |  |
Direct | $ | 283,783 |  |  | $ | 260,647 |  |  | $ | 541,694 |  |  | $ | 500,292 |
Ceded (1) | (31,825 | ) |  | (19,340 | ) |  | (51,756 | ) |  | (34,320 | )
Net premiums written—insurance | $ | 251,958 |  |  | $ | 241,307 |  |  | $ | 489,938 |  |  | $ | 465,972 |
Net premiums earned—insurance: |  |  |  |  |  |  |
Direct | $ | 265,581 |  |  | $ | 243,229 |  |  | $ | 524,324 |  |  | $ | 479,291 |
Assumed | 7 |  |  | 7 |  |  | 13 |  |  | 14 |
Ceded (1) | (16,620 | ) |  | (14,140 | ) |  | (32,819 | ) |  | (28,409 | )
Net premiums earned—insurance | $ | 248,968 |  |  | $ | 229,096 |  |  | $ | 491,518 |  |  | $ | 450,896 |
______________________
(1) | Net of profit commission.
Reinsurance Transaction Details [Table Text Block] | The following tables show the amounts related to the Single Premium QSR Program and the QSR Program for the periods indicated:
| Single Premium QSR Program
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In thousands) | 2018 |  | 2017 |  | 2018 |  | 2017
Ceded premiums written (1) | $ | 28,107 |  |  | $ | 13,856 |  |  | $ | 43,898 |  |  | $ | 22,816 |
Ceded premiums earned (1) | 11,160 |  |  | 6,311 |  |  | 21,537 |  |  | 12,170 |
Ceding commissions written | 9,880 |  |  | 5,134 |  |  | 16,501 |  |  | 8,846 |
Ceding commissions earned (2) | 5,643 |  |  | 3,248 |  |  | 10,911 |  |  | 6,185 |
Ceded losses | 1,013 |  |  | 464 |  |  | 1,913 |  |  | 1,037 |
| QSR Program
| Three Months Ended June 30, |  | Six Months Ended June 30,
(In thousands) | 2018 |  | 2017 |  | 2018 |  | 2017
Ceded premiums written (1) | $ | 3,516 |  |  | $ | 5,059 |  |  | $ | 7,447 |  |  | $ | 10,516 |
Ceded premiums earned (1) | 5,258 |  |  | 7,404 |  |  | 10,870 |  |  | 15,238 |
Ceding commissions written | 1,012 |  |  | 1,446 |  |  | 2,140 |  |  | 3,005 |
Ceding commissions earned (2) | 2,896 |  |  | 3,379 |  |  | 6,444 |  |  | 7,273 |
Ceded losses | 6 |  |  | (310 | ) |  | 252 |  |  | 260 |
______________________
(1) | Net of profit commission.
(2) | Includes amounts reported in policy acquisition costs and other operating expenses.

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- Definition Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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- Definition Tabular disclosure of reinsurer or group of reinsurers for whom the entity has a concentration of credit risk. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 825 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75027451&loc=SL29635902-196195 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611 + Details
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