Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Patient receivables, allowances, current (in Dollars)	$ 774	$ 719
Patient receivables, allowances, noncurrent (in Dollars)	$ 490	$ 423
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares issued	25,291,637	25,291,637
Common stock, shares outstanding	19,347,554	19,254,175
Common stock in treasury, shares	5,944,083	6,037,462