Note 7 - Estimated Liability for Appeals and Estimated Allowance for Appeals (Details Textual) - USD ($)	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Estimated Liability for Appeals and Estimated Allowance for Appeals [Member] | Portion Associated with Medicare RAC Contract [Member]
Allowance for Appeals Related to Uncollected Accounts Receivable	$ 5,348,000	$ 6,614,000	$ 5,473,000	$ 4,824,000
Estimated Liability for Appeals and Estimated Allowance for Appeals [Member]
Estimated Liability for Appeals	0		$ 0
Estimated Liability for Appeals	30,613,000	33,078,000
Allowance for Appeals Related to Uncollected Accounts Receivable	$ 5,348,000	$ 6,614,000