COMBINED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 13,178	$ 10,662	$ 11,542
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,139	4,718	4,728
Provision for bad debts	2,824	2,832	2,777
Deferred rent amortization	(98)	(206)	(155)
Net loss (gain) on sale of equipment	31	19	(143)
Changes in operating assets and liabilities
Accounts receivable	(1,056)	(1,669)	(2,783)
Prepaid expenses and other current assets	(409)	537	(69)
Due from affiliates	247	(2,718)	(1,668)
Accounts payable, accrued expenses	(646)	(459)	(84)
Net cash provided by operating activities	18,210	13,716	14,145
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property and equipment	(3,958)	(669)	(1,965)
Proceeds from sale of equipment	1	1	30
Net cash used in investing activities	(3,957)	(668)	(1,935)
CASH FLOWS FROM FINANCING ACTIVITIES
Principal payments on notes and leases payable	(692)	(835)	(1,200)
Distributions to partners	(13,564)	(12,498)	(12,500)
Net cash used in financing activities	(14,256)	(13,333)	(13,700)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(3)	(285)	(1,490)
CASH AND CASH EQUIVALENTS, beginning of period	3	288	1,778
CASH AND CASH EQUIVALENTS, end of period	0	3	288
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	$ 34	$ 60	$ 86