Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities
Net loss	$ (1,365,000)	$ (1,418,000)
Loss from discontinued operations	(236,000)	(444,000)
Loss from continuing operations	(1,129,000)	(974,000)
Adjustment to reconcile net loss from continuing operations to net cash provided by (used in) operating activities:
Depreciation and amortization	4,104,000	4,548,000
Disposal of assets	5,000
Stock compensation expense	3,000	24,000
Gain on debt extinguishment	(60,000)	(8,796,000)
Change in warrant liabilities	(4,041,000)	3,655,000
Changes in operating assets and liabilities:
Receivables	149,000	858,000
Inventories	407,000	1,977,000
Prepaids and other assets	555,000	(484,000)
Accounts payable and accrued liabilities	(111,000)	(1,077,000)
Deferred pension liability and other	441,000	(83,000)
Net cash provided by (used in) operating activities of continuing operations	323,000	(352,000)
Cash flows from investing activities
Equipment manufactured for rental	(484,000)	(408,000)
Purchases of property, plant and equipment	(72,000)	(64,000)
Net cash used in investing activities of continuing operations	(556,000)	(472,000)
Cash flows from financing activities
Payments of long-term debt	(66,000)	(6,724,000)
Proceeds from long-term debt	500,000
Net proceeds from issuance of preferred stock and warrants		7,850,000
Net cash provided by financing activities of continuing operations	434,000	1,126,000
Cash flows from discontinued operations
Cash provided by (used in) operating activities of discontinued operations	532,000	(181,000)
Cash (used in) provided by financing activities of discontinued operations	(678,000)	590,000
Net cash (used in) provided by discontinued operations	(146,000)	409,000
Net increase in cash and cash equivalents	55,000	711,000
Cash and cash equivalents at beginning of year	1,109,000	398,000
Cash and cash equivalents at end of year	1,164,000	1,109,000
Supplemental disclosure of cash flow information:
Interest paid	219,000	460,000
Supplemental non-cash financing activities:
Exchange of 8¼% Notes for Common Stock		$ 561,000