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Pledged Investments	3 Months Ended
Pledged Investments	Mar. 31, 2019
Pledged Investments [Abstract]
Pledged Investments	5. Pledged Investments We have pledged certain of our securities for the benefit of various state insurance departments and reinsurers. These securities are included with our available-for-sale debt securities because we have the ability to trade these securities. We retain the interest earned on these securities. These securities had a carrying value of $29.4 million and $29.5 million at March 31, 2019 and December 31, 2018, respectively.