Claims Reserve Claims Reserve (Policies)	3 Months Ended
	Mar. 31, 2019
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract]
Liability Reserve Estimate, Policy [Policy Text Block]	Reserve for Veterinary InvoicesThe reserve for veterinary invoices is an estimate of the future amount the Company will pay for veterinary invoices that are dated as of, or prior to, its balance sheet date. The reserve also includes the Company's estimate of related internal processing costs. The reserve estimate involves actuarial projections, and is based on management's assessment of facts and circumstances currently known, and assumptions about anticipated patterns. The reserve is made for each of the Company's segments, subscription and other business, and is continually refined as the Company receives and pays veterinary invoices. Changes in management's assumptions and estimates may have a relatively large impact to the reserve and associated expense.