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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Operating activities:    
Net income $ 229,000 $ 219,000
Adjustments to reconcile net income to net cash from operating activities:    
Depreciation and amortization 1,548,000 1,453,000
Stock based compensation expense 32,000 38,000
Changes in operating assets and liabilities:    
Receivables 211,000 (544,000)
Prepaid expenses and other assets (678,000) (168,000)
Customer deposits/deferred revenue (12,000) 1,922,000
Accounts payable and accrued liabilities 63,000 477,000
Net cash from operating activities 1,393,000 3,397,000
Investing activities:    
Payment for purchase of property and equipment (3,143,000) (1,335,000)
Investment in subsidiaries by non-controlling interests 55,000 397,000
Net cash from investing activities (3,088,000) (938,000)
Financing activities:    
Principal payments on long-term debt (1,068,000) (844,000)
Principal payments on capital leases (832,000) (689,000)
Long term debt financing on property and equipment 3,525,000 0
Advances on line of credit 250,000 0
Payments on line of credit (600,000) (600,000)
Distributions to non-controlling interests (372,000) (380,000)
Net cash from financing activities 903,000 (2,513,000)
Net change in cash and cash equivalents (792,000) (54,000)
Cash and cash equivalents at beginning of period 2,580,000 1,438,000
Cash and cash equivalents at end of period 1,788,000 1,384,000
Supplemental cash flow disclosure:    
Interest 620,000 622,000
Income taxes 28,000 11,000
Schedule of non-cash investing and financing activities    
Acquisition of equipment with capital lease financing $ 264,000 $ 352,000