Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flow from operating activities:
Net loss	$ (745)	$ (4,852)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	2,888	4,996
Provision for loss on doubtful accounts	316	1,136
Gain on sale of investments	(5)	(994)
Impairment charges		87
Gain on sale of property and equipment	(400)	(1,311)
Deferred income taxes		368
Stock-based compensation	827	602
Insurance reserve	(271)	(1,052)
Changes in operating assets and liabilities:
Patient accounts receivable	(620)	831
Other accounts receivable	30	320
Prepaid expenses and other	485	12,280
Accounts payable	(753)	(1,762)
Deferred revenue, net of professional fees	(2,165)	(2,966)
Accrued liabilities and other	1,053	(424)
Net cash provided by operations	640	7,259
Cash flow from investing activities:
Purchases of property and equipment	(763)	(144)
Proceeds from sale of assets	1,027	1,234
Purchases of investment securities	(94,173)	(203,256)
Proceeds from sale of investment securities	95,637	200,313
Net cash provided by (used in) investing activities	1,728	(1,853)
Cash flow from financing activities:
Principal payments of capital lease obligations and loan	(1,697)	(3,094)
Shares repurchased for treasury stock	(288)	(192)
Proceeds from exercise of stock options	23	13
Net cash used in financing activities	(1,962)	(3,273)
Net effect of exchange rate changes on cash and cash equivalents	111	(56)
Increase in cash and cash equivalents	517	2,077
Cash and cash equivalents at beginning of period	19,350	24,529
Cash and cash equivalents at end of period	$ 19,867	$ 26,606