CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES
Net (loss)	$ (576,000)	$ (562,000)	$ (113,000)
Adjustments to reconcile net (loss) to net cash from operating activities:
Depreciation and amortization	6,190,000	6,383,000	6,410,000
(Gain) loss on disposal of assets	0	(1,000)	20,000
Loss on write down investment in equity securities	2,140,000	0	0
Loss on sale of subsidiary	0	572,000	0
Deferred income tax	298,000	76,000	59,000
(Gain) loss on foreign currency transactions	0	(161,000)	1,174,000
Stock-based compensation expense	226,000	138,000	88,000
Other non-cash items	(31,000)	107,000	0
Changes in operating assets and liabilities:
Receivables	178,000	1,069,000	(643,000)
Prepaid expenses and other assets	(52,000)	11,000	58,000
Accounts payable and accrued liabilities	175,000	(859,000)	1,023,000
Net cash from operating activities	8,548,000	6,773,000	8,076,000
INVESTING ACTIVITIES
Payment for purchase of property and equipment	(1,916,000)	(5,212,000)	(1,710,000)
Investment in equity securities	(10,000)	(8,000)	(14,000)
Proceeds from sale of subsidiary	0	768,000	0
Net cash used in investing activities	(1,926,000)	(4,452,000)	(1,724,000)
FINANCING ACTIVITIES
Principal payments on long-term debt	(2,058,000)	(3,263,000)	(3,523,000)
Principal payments on capital leases	(4,026,000)	(4,429,000)	(3,476,000)
Proceeds from long-term debt financing on property and equipment	1,016,000	2,625,000	1,298,000
Proceeds from certificate of deposit	9,000,000	0	0
Advances on line of credit	0	1,140,000	369,000
Payments on line of credit	(8,780,000)	(1,200,000)	(79,000)
Capital contributions from non-controlling interests	46,000	117,000	184,000
Distributions to non-controlling interests	(670,000)	(951,000)	(792,000)
Private placements of common stock	0	1,800,000	0
Common stock repurchase	0	(2,000)	0
Proceeds from promissory notes	0	1,000,000	0
Net cash used in financing activities	(5,472,000)	(3,163,000)	(6,019,000)
Net change in cash and cash equivalents	1,150,000	(842,000)	333,000
Effect of changes in foreign exchange rates on cash	0	(8,000)	12,000
CASH AND CASH EQUIVALENTS, beginning of year	1,059,000	1,909,000	1,564,000
CASH AND CASH EQUIVALENTS, end of year	2,209,000	1,059,000	1,909,000
SUPPLEMENTAL CASH FLOW DISCLOSURE
Cash paid for interest	1,670,000	2,070,000	2,116,000
Cash paid for income taxes	25,000	41,000	44,000
SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES
Acquisition of equipment with capital lease financing	1,343,000	3,709,000	3,478,000
Warrants issued with promissory notes	0	145,000	0
Nonmonetary equipment trade-in	0	700,000	0
Equipment relieved in sale of subsidiary	0	(4,921,000)	0
Other assets relieved in sale of subsidiary	0	(826,000)	0
Debt relieved in sale of subsidiary	0	5,181,000	0
Other liabilities relieved in sale of subsidiary	0	14,000	0
Net equity relieved in sale of subsidiary	0	1,351,000	0
OCI released to net income in sale of subsidiary	0	(779,000)	0
Investment released to net income in sale of subsidiary	$ 0	$ (1,360,000)	$ 0