Note 13 - Contingencies and Commitments (Details Textual)	6 Months Ended		24 Months Ended	36 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2007 USD ($)
South Carolina Department of Health and Human Services [Member]
Loss Contingency, Receivable	$ 0
Payments for Legal Settlements		$ 6,800,000
Long-term Line of Credit [Member] | National [Member] | National Health Care [Member]
Long-term Line of Credit	0
Line of Credit Facility, Maximum Borrowing Capacity	2,000,000
Short-term Line of Credit [Member] | Third Party Operator [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 10,000,000
Written Notice, Number of Days	30 days
Short-term Debt	$ 1,892,000
Coverage Amount Per Incident [Member]
Primary Insurance Coverage Amount Per Incident	1,000,000
Primary Insurance Coverage, Amount Per Location	$ 3,000,000
Caris [Member]
Equity Method Investment, Ownership Percentage	75.10%
Self Insurance Reserve	$ 98,514,000		$ 98,508,000
Direct Business Coverage Statutory Limits	$ 1,000,000
Malpractice Loss Contingency, Number of Claims	36
Annual Excess Coverage			$ 9,000,000	$ 4,000,000	$ 9,000,000	$ 7,500,000
Number of Nursing Facilities under Medicaid Cost Report Audits	11