Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flow from operating activities:
Net income (loss)	$ 656	$ (745)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation	2,521	2,888
Provision for loss on doubtful accounts	518	316
Loss (gain) on sale of investments	8	(5)
Impairment charges	37
Gain on sale of assets	(188)	(400)
Stock-based compensation	1,082	827
Insurance reserve	100	(271)
Changes in operating assets and liabilities:
Patient accounts receivable	(1,624)	(620)
Other accounts receivable	(135)	30
Prepaid expenses and other	520	485
Accounts payable	(163)	(753)
Deferred revenue, net of professional fees	(1,338)	(2,165)
Accrued liabilities and other	(1,548)	1,053
Net cash provided by operations	446	640
Cash flow from investing activities:
Purchases of property and equipment	(589)	(763)
Proceeds from sale of assets	207	1,027
Purchases of investment securities	(36,855)	(94,173)
Proceeds from sale of investment securities	59,264	95,637
Net cash provided by investing activities	22,027	1,728
Cash flow from financing activities:
Principal payments of loan	(4,004)	(1,697)
Shares repurchased for treasury stock	(357)	(288)
Proceeds from exercise of stock options	57	23
Net cash used in financing activities	(4,304)	(1,962)
Net effect of exchange rate changes on cash and cash equivalents	(22)	111
Increase in cash and cash equivalents	18,147	517
Cash and cash equivalents at beginning of period	18,568	19,350
Cash and cash equivalents at end of period	$ 36,715	$ 19,867