CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities:
Net income	$ 332,000	$ 332,000
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	1,574,000	1,517,000
(Gain) on sale of assets	(1,000)	0
Loss on early extinguishment of debt	108,000	0
Deferred income tax	64,000	0
Stock-based compensation expense	59,000	36,000
Other non-cash items	4,000	12,000
Changes in operating assets and liabilities:
Receivables	(500,000)	(735,000)
Prepaid expenses and other assets	22,000	9,000
Customer deposits/deferred revenue	(78,000)	17,000
Accounts payable and accrued liabilities	136,000	141,000
Net cash from operating activities	1,720,000	1,329,000
Investing activities:
Payment for purchase of property and equipment	(333,000)	(188,000)
Net cash used in investing activities	(333,000)	(188,000)
Financing activities:
Principal payments on long-term debt	(1,439,000)	(401,000)
Principal payments on capital leases	(1,064,000)	(1,004,000)
Proceeds from certificate of deposit	0	9,000,000
Payments on line of credit	0	(8,780,000)
Capital contributions from non-controlling interests	7,000	0
Distributions to non-controlling interests	(97,000)	(88,000)
Proceeds from capital lease financing for reimbursement of payments for acquisition of equipment	1,137,000	0
Net cash used in financing activities	(1,456,000)	(1,273,000)
Net change in cash and cash equivalents	(69,000)	(132,000)
Cash and cash equivalents at beginning of period	2,209,000	1,059,000
Cash and cash equivalents at end of period	2,140,000	927,000
Supplemental cash flow disclosure:
Interest	515,000	438,000
Income taxes (refunds)	96,000	(5,000)
Schedule of non-cash investing and financing activities
Acquisition of equipment with capital lease financing	$ 6,870,000	$ 1,160,000