Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 27,822	$ 26,689
Investments	1,984	1,984
Patient receivables, net of allowances of $774 and $719, respectively	3,148	3,026
Other accounts receivable, net	692	950
Prepaid expenses and other	2,168	1,820
Total current assets	35,814	34,469
Property and equipment, net	6,629	7,037
Patient receivables, net of allowances of $490 and $423	1,294	1,186
Other assets	223	223
Total assets	43,960	42,915
Liabilities and Stockholders' Investment
Accounts payable	7,760	7,218
Accrued liabilities and other	8,240	6,868
Debt obligations maturing within one year	784	777
Total current liabilities	16,784	14,863
Long-term insurance reserves, less current portion	5,521	5,714
Long-term debt obligations, less current portion	881	1,080
Other long-term liabilities	1,917	2,127
Stockholders' investment
Common stock ($.001 par value; 25,291,637 shares issued and 19,347,554 and 19,254,175 shares outstanding, respectively)	25	25
Contributed capital	181,084	180,790
Common stock in treasury, at cost (5,944,083 shares and 6,037,462 shares, respectively)	(109,674)	(110,034)
Accumulated deficit	(52,796)	(52,013)
Accumulated other comprehensive income	218	363
Total stockholders' investment	18,857	19,131
Total liabilities and stockholders' investment	$ 43,960	$ 42,915